INSTRUCTION MANUAL ALM-Zero

INSTRUCTION MANUAL

AUTO LENSMETER

ALM-Zero

Read this manual thoroughly before using the instrument to ensure proper and safe operation.

Contact your dealer if you have any questions or you find any problems during operation.

Always follow the operation procedures described in this manual.

Keep this manual in a readily accessible place while operating this instrument.

Contact your dealer if you lose this manual.

D041-E

i. Important Safety Information

Do not install this instrument in a location where explosives or inflammable substances are used or stored. Otherwise, fires or explosion may occur.

Do not remove the cover of the instrument. You may be directly exposed to high voltage sections.

Do not disassemble or modify the instrument. You may be directly exposed to high voltage sections.

Disconnect the power cord from the instrument before servicing the instrument. Otherwise, you may get an electric shock.

Do not place water or chemicals on the instrument. Any water or chemicals entering the instrument may cause an electric shock or failure.

Only use the specified terminal for connection of the instrument.

Using another type of terminal may result in failure of the instrument.

This instrument is a measuring device used in optical glasses shops and ophthalmology. Do not use this instrument for any purpose other than measurement of optical glasses or contact lenses.

A serrated blade is attached to the top of the printer cover to cut the printer paper. Do not touch this blade directly.

The external output terminal is not isolated from the internal circuit.

Inappropriate wiring may damage the internal circuit. Be sure to contact your dealer before using the external output terminal.

Light emitted by the instrument’s built-in lamp includes light in the

UV wavelength range. This lamp may affect eyes and/or human bodies. Observe the following precautions during use.

-

Do not look directly at the measurement luminous flux while operating the instrument.

-

The measurement luminous flux is irradiated from the projector

(upper section of the instrument) toward the nose piece.

Do not insert a mirror, etc. between the projector and nose piece.

The mirror may reflect the measurement luminous flux and the flux may be irradiated directly into the eyes.

i-1 ■

Caution labels on the main unit

Never mark or damage caution labels provided on the instrument. A warning label is provided on the printer cover (right side of the main unit) and on the right side of the lower section.

Contact your dealer when a label is damaged or becomes illegible.

■ i-2

ii. How to Read This Manual

Outline

This manual is structured as follows.

1. PRIOR TO USE

Describes safety precautions and important information to be understood before installing and using the instrument.

2. NAMES AND FUNCTIONS OF PARTS AND

COMPONENTS

Describes names and functions of each section of the instrument.

3. OPERATION PROCEDURES

Describes information required for installing and using the instrument.

4. TECHNICAL INFORMATION

Describes useful technical information about the instrument.

5. INSPECTION AND MAINTENANCE

Describes procedures for replacing consumable parts, etc. that the user of the instrument should normally conduct.

6. TROUBLESHOOTING

Describes how to solve problems.

7. CONSUMABLES AND OPTIONAL EQUIPMENT

Describes consumable parts and optional equipment.

8. SPECIFICATIONS

Describes the specifications of the instrument.

9. INDEX

Refer to the index when needed. ii-1 ■

Symbols used in this manual

The symbols below indicate the following:

This is a precaution that, if unheeded, will result in a hazardous situation where there is an imminent danger of serious injury or death.

This is a precaution that, if unheeded, could result in a hazardous situation where there is a possibility of serious injury or death.

This is a precaution that, if unheeded, may result in a situation where there is a possibility of minor or moderate injury or damage to property.

This is an additional instruction which may contain a special precaution on company policy related, either directly or indirectly, to the safety of personnel or to the protection of property.

■ ii-2

iii. Contents

i.

Important Safety Information ....................................................................................... i-1

Caution labels on the main unit ....................................................................................... i-2 ii.

How to Read This Manual .......................................................................................... ii-1

Outline ............................................................................................................................ ii-1 iii.

Symbols used in this manual .......................................................................................... ii-2

Contents .................................................................................................................... iii-1

1.

PRIOR TO USE .......................................................................................................... 1-1

1.1 Precautions for operation ......................................................................................... 1-1

1.2 Checking package contents ..................................................................................... 1-5

1.3 Glossary ................................................................................................................... 1-6

2.

1.4 Outline of operation .................................................................................................. 1-8

NAMES AND FUNCTIONS OF PARTS AND COMPONENTS ................................... 2-1

2.1 Front of the main unit ............................................................................................... 2-1

2.1.1 Front view .......................................................................................................... 2-1

2.1.2 Right perspective view ....................................................................................... 2-2

2.2 Sides of the instrument............................................................................................. 2-3

2.2.1 Right .................................................................................................................. 2-3

2.2.2 Left ..................................................................................................................... 2-4

2.3 Rear and bottom of the instrument ........................................................................... 2-5

2.4 Measurement screen ............................................................................................... 2-6

2.4.1 RL measurement screen.................................................................................... 2-6

2.4.2 Single lens measurement screen ...................................................................... 2-8

2.5 Operation buttons ................................................................................................... 2-10

2.5.1 Operation button menu 1 (default) ................................................................... 2-10

2.5.2 Operation button menu 2 (default) ................................................................... 2-12

2.6 Measurement mode selection screen .................................................................... 2-13

2.7 Measurement result display screen (Reading screen) ........................................... 2-14

2.7.1 Measurement in RL mode ................................................................................ 2-14

2.7.2 Measurement in S mode .................................................................................. 2-16

2.8 UV transmissivity display screen ............................................................................ 2-18

3.

2.9 Layout screen ......................................................................................................... 2-19

OPERATION PROCEDURES .................................................................................... 3-1

3.1 Installation ................................................................................................................ 3-1

3.1.1 Precautions for installing the instrument ............................................................ 3-1

3.1.2 Precautions for connecting the power cord ........................................................ 3-2

3.2 Preparation before use ............................................................................................. 3-2 iii-1 ■

3.2.1 Connecting the power cord ................................................................................ 3-2

3.2.2 Connection to external device (serial communication cable) ............................. 3-3

3.2.3 Turning the power on ......................................................................................... 3-5

3.2.4 Contrast adjustment of display .......................................................................... 3-6

3.2.5 Screensaver / All off function ............................................................................. 3-7

3.2.6 Point marker ...................................................................................................... 3-8

3.2.7 Lens table .......................................................................................................... 3-9

3.2.8 How to avoid the nose block .............................................................................. 3-9

3.2.9 Replacing the nose piece ................................................................................ 3-10

3.2.10 Calibrating the touch panel ............................................................................ 3-10

3.3 Measurement procedures ...................................................................................... 3-12

3.3.1 Selecting the measurement mode ................................................................... 3-13

3.3.2 Measuring mono-focal lens (Normal mode) ..................................................... 3-14

3.3.3 Automatic detection of progressive power lens ................................................ 3-16

3.3.4 Measuring progressive power lens (PROG mode) .......................................... 3-16

3.3.5 Measuring progressive power lens exclusively for reading (PROG [near] mode) ... 3-21

3.3.6 Measuring bifocal lens ..................................................................................... 3-26

3.3.7 Measuring trifocal lens ..................................................................................... 3-29

3.3.8 Measuring high refractive index lens ............................................................... 3-32

3.3.9 Function for measuring UV transmissivity ........................................................ 3-33

3.3.10 Measuring contact lens (CL mode; CL Holder mode) .................................... 3-34

3.3.11 Measuring the pupil distance (PD) ................................................................. 3-36

3.3.12 Measuring the prism ...................................................................................... 3-37

3.3.13 Measuring lens on the single lens measurement screen ............................... 3-41

3.4 Calculating refractive index of lens ......................................................................... 3-42

3.4.1 Refractive index calculation function................................................................ 3-42

3.5 Setting measurement conditions ............................................................................ 3-44

3.5.1 Setup screen ................................................................................................... 3-44

3.5.2 MODE setting screen ....................................................................................... 3-45

3.5.3 FUNCTION setting screen ............................................................................... 3-46

3.5.4 AUTO setting screen ........................................................................................ 3-48

3.5.5 PRINT setting screen ....................................................................................... 3-50

3.5.6 DISPLAY setting screen................................................................................... 3-51

3.5.7 OUTPUT setting screen ................................................................................... 3-52

3.5.8 COM setting screen ......................................................................................... 3-53

3.6 Printout ................................................................................................................... 3-54

3.6.1 Printing ............................................................................................................ 3-54

3.6.2 Printout details ................................................................................................. 3-54

■ iii-2

3.7 Communication format ........................................................................................... 3-55

3.7.1 RS-232C Communication format ..................................................................... 3-55

4.

TECHNICAL INFORMATION ...................................................................................... 4-1

4.1 Prism ........................................................................................................................ 4-1

4.1.1 Prism and refraction ........................................................................................... 4-1

4.1.2 Example of prism displayed using the auto lens meter ...................................... 4-2

4.2 How to improve accuracy of marking ....................................................................... 4-3

4.3 How to measure PD more precisely ......................................................................... 4-4

5.

INSPECTION AND MAINTENANCE .......................................................................... 5-1

5.1 Inspection ................................................................................................................. 5-1

5.2 Routine maintenance ............................................................................................... 5-2

5.2.1 Maintenance of main unit ................................................................................... 5-2

5.2.2 Cleaning protective glass ................................................................................... 5-3

5.2.3 Cleaning the collimeter lens ............................................................................... 5-4

5.3 Replacing consumables ........................................................................................... 5-5

5.3.1 Fuses ................................................................................................................. 5-5

5.3.2 Ink cartridge ....................................................................................................... 5-6

5.3.3 Printer paper ...................................................................................................... 5-7

5.3.4 Nose piece ......................................................................................................... 5-8

5.4 Storing ...................................................................................................................... 5-8

6.

5.5 Disposal ................................................................................................................... 5-9

TROUBLESHOOTING................................................................................................ 6-1

6.1 General operation .................................................................................................... 6-1

6.2 General operation for measuring lenses .................................................................. 6-6

6.3 Measuring progressive power lens ........................................................................... 6-8

6.4 Measures to prevent flaws on lenses ..................................................................... 6-12

6.5 Error messages ...................................................................................................... 6-13

6.5.1 Startup screen ................................................................................................. 6-13

6.5.2 Measurement screen ....................................................................................... 6-13

6.5.3 Measurement result screen ............................................................................. 6-14

7.

6.5.4 Refractive index measurement screen ............................................................ 6-15

SPARE PARTS AND ACCESSORIES ........................................................................ 7-1

7.1 Spare parts ............................................................................................................... 7-1

8.

SPECIFICATIONS ...................................................................................................... 8-1

8.1 Specifications ........................................................................................................... 8-1

8.1.1 Measurement ..................................................................................................... 8-1

8.1.2 Data control ....................................................................................................... 8-1

8.1.3 Dimensions and Power Source ......................................................................... 8-2 iii-3 ■

9.

8.2 Noises ...................................................................................................................... 8-2

8.3 Operating environment ............................................................................................. 8-2

INDEX......................................................................................................................... 9-1

■ iii-4

1. PRIOR TO USE

Read this manual thoroughly before using the instrument to ensure proper and safe operation.

Always follow the operation procedures described in this manual.

Check that there are no devices that generate strong magnetic field near the instrument. A strong magnetic field may cause noise and affect measurement.

1.1 Precautions for operation

Only allow qualified operators to use the instrument.

Precautions when installing the instrument

-

Install the instrument in a location free of water or chemicals. Any water or chemicals entering the instrument may cause an electric shock or failure.

-

Do not install the instrument in a location where chemicals are stored or gases may occur. Spilt chemicals or vapor may enter the instrument and result in fire.

-

Check that the frequency, voltage, and allowable current (or power consumption) of the power source are appropriate. Otherwise, fire or electric shock may occur.

-

Connect the power plug to a grounded 3-pin outlet. Otherwise, a short circuit due to failure of the instrument may result in electric shock. Do not place any heavy object on the power cord or squash the power cord. Fire or electric shock may occur.

-

Fully insert the power plug into the outlet. Faulty contact, allowing any metal to contact the exposed terminal of the plug, or dust accumulated on the exposed terminal of the plug may result in fire or electric shock.

-

Do not connect a device with data transmission specifications that are not compatible. Fire or electric shock may occur. Be sure to contact your dealer before connecting the instrument with a communication connector.

-

Conduct grounding work correctly. Otherwise you may get an electric shock.

1-1 ■

-

Do not hold the display when transporting the instrument. The display may be disconnected and the instrument may drop, resulting in injuries.

-

Install the instrument in a location not subject to direct sunlight, high temperature and humidity, or air containing dust, salt, and/or sulfur.

Otherwise, failure or malfunction may occur.

-

Install the instrument in a leveled stable location free of vibration or mechanical impact. Otherwise, measurement cannot be conducted correctly.

Also, the instrument may topple over or fall down, resulting in fire or a serious accident.

-

Check the power source (discharge condition, polarity, etc.).

-

Check that the date set in the instrument conforms to the actual operation date and time.

Precautions before using the instrument

-

Check the electrical contact of switches and that the instrument works correctly.

-

Check that all cables are connected correctly.

-

-

Check the power source (discharge condition, polarity, etc.).

Check that the instrument is correctly grounded.

-

Check that the date set in the instrument conforms to the actual operation date and time.

-

Always keep the nose piece tip clean. If the nose piece tip has dust on it, the lens may be damaged.

Precautions during operation

-

Do not place any container with liquid in it on the instrument. Any liquid entering the instrument may cause electric shock or failure.

■ 1-2

-

Do not lean on the instrument or press the instrument from the top. The instrument may topple over, resulting in mechanical failure or injuries.

-

If any problem is found with the instrument, take appropriate action such as stopping operation.

-

If problems such as smoke, offensive odor, or abnormal sound occur, immediately turn off the instrument, disconnect the power plug from the outlet, and contact your dealer.

-

When cutting the printer paper, pull the paper downward to apply it to the cutter blade and then draw the paper sidewise. If the paper is not applied to the blade appropriately, the paper may become jammed or the printer may be damaged.

Precautions after operation

-

Do not place any container with liquid in it on the instrument. Any liquid entering the instrument may cause electric shock or failure.

-

Do not use organic solvents such as thinner, benzene, or acetone to clean the instrument. Fire or electric shock may occur. (They may also corrode the

-

resin or coating on the cover of the instrument.)

Follow the specified procedures to return the instrument to its original condition and turn it off.

Precautions after operation

-

Do not place any container with liquid in it on the instrument. Any liquid entering the instrument may cause electric shock or failure.

1-3 ■

-

Do not use organic solvents such as thinner, benzene, or acetone to clean the instrument. Fire or electric shock may occur. (They may also corrode the resin or coating on the cover of the instrument.)

-

Follow the specified procedures to return the instrument to its original condition and turn it off.

-

Hold the plug when disconnecting the power cord from the outlet to avoid placing excessive force on the cord. Pulling the cord may damage the inner core wires, resulting in electric shock or fire.

-

-

Refer to "5.4 Storing" for instructions on the storage of the instrument.

Clean and neatly arrange the accessories and cables.

-

Clean the instrument appropriately at the end of operation to be ready for the next operation.

-

Do not cover the instrument with the dust cover while the instrument is turned on.

If any failure occurs in the instrument, immediately stop operation, indicate the failure in the instrument, and contact your dealer for repairs.

-

Do not modify the instrument. Doing so may cause electric shock or failure of the instrument. There is a high-voltage section in the instrument. Touching this section will result in death or serious injuries.

-

Disconnect the power cord from the outlet when replacing fuses. Otherwise, you may get an electric shock, resulting in death or serious injuries.

-

Use the power cord and fuses provided with the instrument or specified by

Righton to ensure safety. Also, do not use the accessories provided with the instrument for other equipment.

-

When any failure occurs in the instrument, indicate the failure in the instrument and contact your dealer for inspection and repairs. Do not attempt to repair the instrument yourself.

-

Conduct regular inspections of the instrument and components.

-

When the instrument is not used for 1 month or longer, check that the instrument is operating correctly and safely before starting operation. Refer to

"5.1 Inspection" in this manual for the checking procedures.

■ 1-4

1.2 Checking package contents

Open the package and check that the required quantity of the following items is included, and check that they are not damaged.

If any item is missing or damaged, contact your dealer as soon as possible.

Keep the box and packing materials for use when moving or transporting the instrument.

Never lift the instrument by the display when taking the instrument out of the packing box.

The instrument may be damaged.

Ink may leak from the ink cartridge of the point marker due to vibration during transportation or environmental changes during storage. Check the marker tip when opening the package. If the tip is smeared with ink or ink has leaked, wipe off the ink with paper or similar and mark dummy points two or three times before using the marker for actual operation.

● Auto Lensmeter ALM-Zero main unit

● Power cord ······················································· 1

● Nosepiece for measuring glasses ·························· 1

(Preinstalled on the main unit.)

● Nosepiece for measuring contact lenses ················· 1

● Hard contact lens holder ····································· 1

● Fuse ······························································· 4

(Two of these are preinstalled on the main unit.)

● Printer paper ····················································· 3

(1 roll is set in the main unit.)

● Dust cover ························································ 1

● INSTRUCTION MANUAL (this manual) ·················· 1

1-5 ■

1.3 Glossary

[ADD]

[AUTO HOLD]

[AUTO TABLE LOCK]

[AXIS (A)]

[BAS]

:

Main terms used in this manual are described below.

Addition of multifocal lens (including progressive power lens)

: Function to automatically read the following measurements

- Optical center of a mono-focal lens

- Optical center of a contact lens

- Distance point and reading point of a progressive power lens

Distance point and reading point of a bifocal lens

- Distance point, middle point, and reading point of a trifocal lens

: Function to automatically lock the lens table at the following positions

- Optical center in mono-focal lens measurement mode

: Axis angle that represents the direction of astigmatism

(Unit: deg)

: Direction (angle) of the base of the prism displayed in polar coordinates (Unit: deg).

[CYL (C)]

[D]

[DCX]

[DCY]

■ 1-6

: Cylindrical dioptry (Unit: D)

: Diopter Unit for expressing the dioptry of a lens. This is the inverse of the focal length (Unit: m)

: Distance (eccentricity) in the horizontal direction (DCX) from the measurement position to the optical center (Unit: mm)

: Distance (eccentricity) in the vertical direction (DCY) from the measurement position to the optical center (Unit: mm)

[D1]

[D2]

[LPD]

[n]

[ne]

[PD]

[PSM]

[PX, PY]

[RPD]

[SPH (S)]

【 △ 】

[ABBE number]

: Refractive power of the front of lens (Unit: D)

: Refractive power of the rear of lens (Unit: D)

: Distance from the center of an optical frame to the optical center of the left lens

: Refractive index of inspected lens

: Refractive index of spherometer

(The default setting of the instrument is 1.523.)

: Pupil distance (Unit: mm)

: Absolute value of prismatic power displayed in polar coordinates (Unit:

)

: Prismatic power in horizontal direction (PX) and vertical direction (PY) displayed in orthogonal coordinates (Unit:

)

: Distance from the center of an optical frame to the optical center of the right lens

: Spherical dioptry (Unit: D)

: Prism diopter. Unit for expressing prismatic power

: Number that represents the dispersion level of the refractive index according to wavelength

The Abbe number of a normal lens is approximately 60 and that of a high-refractive index lens is 30 - 45.

1-7 ■

1.4 Outline of operation

This instrument is designed to measure the dioptry and prismatic power of optical lenses and contact lenses.

● This instrument consists of the optical system, electrical system, and mechanical system.

● When an optical lens or contact lens is placed on the nose piece, the instrument automatically measures the dioptry and prismatic power and shows the result on the LCD. The measured data is saved in the internal memory and can be printed out using the built-in printer.

■ 1-8

2. NAMES AND FUNCTIONS OF PARTS AND

COMPONENTS

2.1 Front of the main unit

2.1.1 Front view

(Fig. 1)

(1) Display/Touch panel

Displays information for centering of lenses, measurement conditions, measurement results, etc.; used to operate various buttons.

(2) Nose piece (for measuring optical glasses or contact lenses)

Use to position the lens.

(3) Nose block

Applied to pad of optical frame when measuring PD (pupil distance).

(1) HOLD button

Retains and saves the measured data.

(5) Lens table

Used as reference for astigmatism axis of optical glasses.

(6) Power lamp

Stays lit green when the instrument is turned on.

2-1 ■

2.1.2 Right perspective view

(Fig. 1)

(1) Point marker

Marks points on the center and axis direction of the lens.

(2) Lens guide lever

Moves the lens guide up and down.

(3) Lens guide

Secures the lens when marking points.

(4) Contrast adjustment knob

Adjusts contrast of the display.

■ 2-2

2.2 Sides of the instrument

2.2.1 Right

(Fig. 1)

(1) Printer

Prints the measurement data.

(2) External output terminal (RS-232C)

Used when sending/receiving various types of data.

(3) Table lock button

Locks and unlocks the lens table.

(4) External output terminal (USB)

This function cannot be used in this instrument.

2-3 ■

2.2.2 Left

(1) Power switch

Turns power on and off.

(Fig. 1)

■ 2-4

2.3 Rear and bottom of the instrument

(Fig. 1)

(Fig. 2)

(1) Accessory case

Stores the nose piece for measuring contact lenses, contact lens holder, etc.

(2) Power socket

Insert the power cord here.

(3) Fuse holder

Holds 2 fuses

(4) Service switch

Used when conducting maintenance.

2-5 ■

2.4 Measurement screen

2.4.1 RL measurement screen

(Fig. 1)

(1) AUTO HOLD

Displayed when the AUTO HOLD function is activated.

(2) AUTO TABLE LOCK

Displayed when the AUTO TABLE LOCK function is activated. "LOCK" is displayed while the lens table is locked when the AUTO TABLE LOCK setting is either "AUTO" or "MANUAL."

(3) UV bar graph

Indicates the transmissivity of ultraviolet rays.

(4) Operation buttons

Displays the operation buttons.

(5) Error display

Displays an error message if any error occurs.

(6) Target area

Area for centering the lens to be inspected using the target (cross mark)

(7) Power graph

Indicates the power distribution around the target in different colors.

■ 2-6

(8) ABBE number

Displays the ABBE number when measuring the high refractive power lens.

(9) Data display

Displays the measurement data.

(10) AUTO RL

Displays the setting of the AUTO RL function to automatically switch the measurement side between left and right.

"RL: A": The AUTO RL function is activated. (Left or right is selected according to the measurement order.)

"RL: PD": The AUTO RL function is deactivated.

"RL: PD": Right or left is selected according to the position of the nose block for measuring PD.

(11) PD

Displays the PD measurement status.

"PD:": The PD is measured. (The nose block is suspended at the left end position.)

"PD: ON": The PD is measured. (During PD measurement)

(No indication): The PD is not measured.

(12) L (length)

Displays the distance from the lower edge of the optical frame to the optical center of the lens.

(13) RL tab

Touching the “R” and “L” tab displays the right lens measurement screen and left lens measurement screen respectively. The screen corresponding to the colored tab can be measured. Whether or not the measurement data has been saved is also displayed. The symbol is highlighted when the data has been saved on the RL measurement screen.

2-7 ■

2.4.2 Single lens measurement screen

(Fig. 1)

(1) AUTO HOLD

Displayed when the AUTO HOLD function is activated.

(2) AUTO TABLE LOCK

Displayed when the AUTO TABLE LOCK function is activated. "LOCK" is displayed while the lens table is locked when the AUTO TABLE LOCK setting is either "AUTO" or "MANUAL."

(3) UV bar graph

Indicates the transmissivity of ultraviolet rays.

(4) Operation buttons

Displays the operation buttons.

(5) Error display

Displays an error message if any error occurs.

(6) Target area

Area for centering the lens to be inspected using the target (cross mark)

(7) Power graph

Indicates the power distribution around the target in different colors.

(8) ABBE number

Displays the ABBE number when measuring the high refractive power lens.

■ 2-8

(9) Data display

Displays the measurement data.

(10) Total number of data sets

Displays the total number of data sets.

2-9 ■

2.5 Operation buttons

2.5.1 Operation button menu 1 (default)

(Fig. 1)

(1) AUTO HOLD button

Turns the AUTO HOLD function ON and OFF.

(2) AUTO TABLE LOCK button

Turns the AUTO TABLE LOCK function ON and OFF.

(3) CYL button

Switches the symbol for the astigmatism value.

- / ± / +

(4) Increment button

Switches the increment of the value to be displayed.

0.25 / 0.12 / 0.01

(5) Page button

Switches the button menu (1 and 2).

(6) Setup button

Displays the various setting screens.

(7) Lens button

Displays the measurement mode selection screen. Also displays an illustration of the selected lens type.

(8) Reading button

Displays the measurement result display screen (Reading screen).

■ 2-10

(9) Clear button

Deletes the measurement data.

(10) UV CAL button

Calibrates the UV bar graph. Touch this button to calibrate the value on the UV bar graph to 100% when the UV bar graph does not indicate 100% although no lens is set.

This button does not appear while measuring the lens to prevent incorrect operation.

2-11 ■

2.5.2 Operation button menu 2 (default)

(Fig. 1)

(1) PRISM button

Switches the display of prismatic power (5). (Includes "No display”.)

No display / PXY / r θ / DXY

(2) PD button

Turns the PD (pupil distance) function ON and OFF.

(3) ABBE number

Sets whether or not to correct the measured value of the high refractive index lens.

The measured value is corrected when the ABBE number is displayed in the upper right corner of the target area. Refer to “3.5 Setting measurement conditions” for how to change the ABBE number.

(4) S/RL button

Switches the single lens measurement screen and RL measurement screen alternately.

■ 2-12

2.6 Measurement mode selection screen

(Fig. 1)

(1) Normal mode

Measures a mono-focal lens.

(2) Prog mode

Measures a progressive power lens (mainly for distance and reading and for middle distance and reading).

(3) Prog (near) mode

Measures a progressive power lens exclusively for reading.

(4) Bi-focal mode

Measures a bifocal lens.

(5) Tri-focal mode

Measures a trifocal lens.

(6) CL mode

Measures a contact lens. (When measuring a contact lens placed directly on the nose piece for measuring contact lenses)

(7) CL-Holder mode

Measures a contact lens. (When using the hard CL holder)

(8) Exit button

Returns to the measurement screen without changing the measurement mode.

2-13 ■

2.7 Measurement result display screen (Reading screen)

Touch the “Exit” button to delete measurement data.

2.7.1 Measurement in RL mode

(Fig. 1)

(1) Measurement results

Displays the measurement results.

ADD

PX

PY

RPD

(LPD)

L

: Addition of multifocal lens

: Prismatic power in horizontal direction OUT/IN

: Prismatic power in vertical direction UP/DOWN

: Distance from the center of an optical frame to the optical center of the right/left lens

: Distance from the lower edge of the optical frame to the optical center

(2) CAL button

Displays the refractive index calculation screen to calculate the refractive index using a spherometer. (Refer to “3.4.1 Refractive index calculation function.”)

■ 2-14

(3) CYL button

Switches the CYL symbol for the measurement data.

- / + / ±

(4) Increment button

Switches the increment of the value to be displayed.

0.01 / 0.12 / 0.25

(5) Exit button

Deletes the measurement data and returns to the measurement screen.

(6) Retake button

Touching the “Re” button (6) under the R tab returns to the right lens measurement screen, while touching the “Re” button (6) under the L tab returns to the left lens measurement screen.

(7) UV button

Displays the UV transmissivity display screen.

(8) Layout button

Displays the Layout screen.

(9) TOTAL

Displays the PD and total prism value.

(10) Data transfer button: Com / Link

Com : Outputs the data to the external device via RS-232C.

Link : This function is cannot be used in this instrument.

Refer to “3.5 Setting measurement conditions” for various settings.

(11) Print button

Prints the data displayed on the screen.

2-15 ■

2.7.2 Measurement in S mode

(Fig. 1)

(1) Measurement results

Displays the measurement results

ADD

PX

PY

: Addition of multifocal lens

: Prismatic power in horizontal direction OUT/IN

: Prismatic power in vertical direction UP/DOWN

(2) CAL button

Displays the refractive index calculation screen to calculate the refractive index using a spherometer. (Refer to “3.4.1 Refractive index calculation function.”)

■ 2-16

(3) CYL button

Switches the CYL symbol for the measurement data.

- / + / ±

(4) Increment button

Switches the increment of the value to be displayed.

0.01 / 0.12 / 0.25

(5) Exit button

Returns to the measurement screen with the measured data retained.

(6) Retake button

Measures the measurement data currently displayed on the screen again. The current measurement result will be overwritten with the new data and the measurement result display screen appears.

(7) Data No.

Displays the displayed data number and the total number of measured data sets.

(8) Arrow button

Used to select the data to be displayed.

(9) Keypad

Enter a data number and press the Enter key to display the selected data.

(10) ALL Print button

Prints all of the measured data.

(11) ALL Clear button

Deletes all of the measured data.

(12) Data transfer button: Com

Outputs the data to the external device via RS-232C.

(13) PRINT button

Prints the data displayed on the screen.

2-17 ■

2.8 UV transmissivity display screen

The transmissivity at a wavelength of 385 nm is measured. The value displayed on this screen is not the transmissivity for the entire UV range.

(Fig. 1)

(1) UV transmissivity

Displays the UV transmissivity of the measured optical lens as a percentage. A transmissivity of 0% is displayed when the lens is UV-cut coated.

(2) Scale

Displays a color scale that classifies the UV transmissivity in 5 levels.

(3) Color display of UV transmissivity

Shows the UV transmissivity using different colors.

(4) Back button

Returns to the measurement result display screen.

■ 2-18

2.9 Layout screen

(Fig. 1)

(1) PD

Displays the PD (pupil distance).

(2) RPD/LPD

RPD: Displays the distance from the center of the optical frame to the optical center of the right lens.

LPD: Displays the distance from the center of the optical frame to the optical center of the left lens.

(3) L Value

Displays the distance from the lower edge of the optical frame to the optical center when L Value is activated. (Refer to “3.5 Setting measurement conditions.")

(4) Back button

Returns to the measurement result display screen.

2-19 ■

This page is intentionally left blank.

■ 2-20

3. OPERATION PROCEDURES

3.1 Installation

3.1.1 Precautions for installing the instrument

Install the instrument in a location free of water or chemicals. Any water or chemicals entering the instrument may cause an electric shock or failure.

Do not install the instrument in a location where chemicals are stored or gases may occur. Spilt chemicals or vapor may enter the instrument and result in fire.

Do not hold the display when transporting the instrument. The display may be disconnected and the instrument may drop, resulting in injuries.

Install the instrument in a location not subject to direct sunlight, high temperature and humidity, or air containing dust, salt, and/or sulfur.

Otherwise, failure or malfunction may occur.

Install the instrument in a leveled stable location free of vibration or mechanical impact.

Otherwise, images cannot be captured correctly.

Also, the instrument may topple over or fall down, resulting in fire or a serious accident.

3-1 ■

3.1.2 Precautions for connecting the power cord

Connect the power plug to a grounded 3-pin outlet. Otherwise, a short circuit due to failure of the instrument may result in electric shock.

Do not place any heavy object on the power cord or squash the power cord. Fire or electric shock may occur.

Fully insert the power plug into the outlet. Faulty contact, allowing any metal to contact the exposed terminal of the plug, or dust accumulated on the exposed terminal of the plug may result in fire or electric shock.

Check the frequency, voltage, and allowable current (or power consumption) of the power source. Otherwise, fire or electric shock may occur.

3.2 Preparation before use

3.2.1 Connecting the power cord

The connector must be inserted in the correct direction. Check the direction and firmly insert the connector.

(Fig. 1)

Insert the connector (1) of the power cord into the power socket at the bottom of the main unit in the correct direction.

Connect all three pins of the plug. (Fig. 1)

■ 3-2

3.2.2 Connection to external device (serial communication cable)

The external output terminal is not isolated from the internal circuit. Inappropriate wiring may damage the internal circuit.

Be sure to contact your dealer prior to using the external output terminal.

The connector must be inserted in the correct direction. Check the direction and firmly insert the connector.

Refer to “3.7. Communication format” for the communication format.

a) Connecting the RS-232C terminal

The RS-232C terminal on this instrument is a female terminal. When connecting to a personal computer, attach a male-male adapter to the female-female interlink cable.

Appropriate settings are required to connect the

RS-232C terminal on this instrument. (Refer to

“3.5.7 OUTPUT setting screen” and “3.5.8 COM setting screen.”)

The cable is not included with this instrument.

Prepare a cable separately.

(Fig. 1)

An external device can be connected to send the measurement data.

Connect the male-male adapter to the RS-232C terminal (1).

Also connect the female-female interlink cable and secure the connector with screws.

(Fig. 1)

3-3 ■

(Fig. 2)

[D-sub9 pin layout]

Pin number

1

2

3

4

Signal name

R x D

T x D

D T R

5

S G

6

D S R

7

RTS

8

CTS

9

Pin 4 and pin 6 are short-circuited in the instrument. b) Connecting the USB cable

This function cannot be used in this instrument.

■ 3-4

3.2.3 Turning the power on

Place the lens on the nose piece after the measurement screen appears. “INITIAL ERROR” occurs when power is turned on with a lens on the nose piece.

When turning power on while the nose piece for measuring contact lenses is set, a buzzer may go off after the startup screen appears and the error message may appear. (Refer to “6.

TROUBLESHOOTING.”)

When starting the instrument in contact lens measurement mode, turn power on with the nose piece for measuring contact lenses set.

1) Connect the power cord to the power terminal and insert the power plug into the outlet.

2) Check the following before turning power on.

- The nose piece is firmly secured.

- The protective glass under the nose piece is clean.

- There is no lens set on the nose piece.

3) When the power switch (1) is set to “

,” the startup screen appears for approximately 5 seconds and then the measurement screen appears.

(Fig. 1)

3-5 ■

3.2.4 Contrast adjustment of display

Turn the contrast adjustment knob (1) to adjust the contrast.

(Fig. 1)

■ 3-6

3.2.5 Screensaver / All off function

When the instrument is not used for a while, turn the main unit off and cover it with the dust cover.

When

OFF

is chosen on AUTO POWER OFF setting, screensaver and

all off

function become invalid. In this case, the instrument keeps itself being ready for measurement.

By AUTO POWER OFF setting, when no button is used for 5 minutes or 10 minutes while the instrument is turned on, the screensaver or “all off” function is activated accordingly.

When no button is used for 10 minutes while the instrument is turned on, the screensaver or “all off” function is activated.

1) Call the SETUP > FUNCTION 2 screen.

2) Turn SCREEN SAVER on or off.

ON: Activates the screensaver function.

OFF: Deactivates the screensaver function.

The screensaver shows various sizes of Landolt’s ring repeatedly in the specified cycle. The contents set by CONTENT are shown on the final screen.

(Refer to "3.5.3 FUNCTION setting screen.”) When the screensaver is set to OFF, the “all off” function is activated. The LCD backlight, internal motor, and measurement light source are turned off to prevent unnecessary wear. This function is appropriate when the instrument is installed in a processing room or inspection room.

3) Touch any part of the LCD to resume measurement.

The screen returns to the same condition as when the screensaver or “all off” function was activated.

3-7 ■

3.2.6 Point marker

(Fig. 1)

(Fig. 2)

The point marker is a device with three ink markers used to mark the optical center of the lens and the axis direction (in the case of astigmatism lens). Mark points while the lens is secured with the lens guide.

Slowly lower the lens guide. If the lens guide is lowered rapidly, the lens may be damaged.

Use the lens guide only when marking points.

When measuring a coated lens, do not move the lens while secured by the lens guide; otherwise the coating may be damaged.

Do not touch the marker tip of the point marker.

Otherwise the marker tip may be deformed and the marker may become unusable.

Replace the ink cartridge when dots become too light. (Refer to “5.3.2 Ink cartridge.”)

1) Lift the lens guide lever (1) slightly to unlock it.

2) Place the center of the lens to be measured on the nose piece for measuring optical glasses and gently lower the lens guide to secure the lens.

3) Lift the lens guide slightly, adjust the lens position, and secure the lens again with the lens guide.

4) Turn the lever (2) of the point marker to turn the marker tip downward and press the lever. The marker tip lowers and marks points on the lens surface.

5) Gently release the lever to return it to its original position.

■ 3-8

3.2.7 Lens table

The lens table is automatically unlocked after 3 minutes.

The lens table is used as a reference for the astigmatism axis of glasses.

(Fig. 1)

1) When the lens table is locked, press the table lock button (1) on the right of the lens table to unlock it.

2) Pull out the lens table so that it contacts the lower edges on both sides of the optical frame.

3) Press the table lock button (1) to lock the table at an optional position. Press the button again to unlock the table. Activate the AUTO TABLE LOCK function to lock the lens table automatically upon measurement, referring to “2.5.1 Operation button menu 1” or “3.5 Setting measurement conditions.”

When the AUTO TABLE LOCK function is activated,

is displayed in the upper right corner of the measurement screen.

3.2.8 How to avoid the nose block

The nose block may hinder measurement when not used.

Therefore, the nose block can be avoided to enable easier measurement.

Do not move the lens table when the nose block is not completely avoided. Also, do not move or push the nose block while moving the lens table.

Otherwise, these devices may be damaged.

(Fig. 1)

1) Unlock the nose block and slowly lower it to the bottom as shown in Figure 1.

2) Slide the nose block to the left end and check that the status of "PD" on the screen is not “ON.” (Fig. 2)

(Fig. 2)

3-9 ■

3.2.9 Replacing the nose piece

(Fig. 1)

1) Attach the nose piece for measuring contact lenses in contact lens measurement mode, and the nose piece for measuring optical glasses in optical glass measurement mode. When the nose piece type does not conform to the measurement mode, the error message “NOSE PIECE ERROR!” appears.

2) When the nose piece is changed to that for measuring contact lenses in Normal mode, the measurement mode is automatically switched from

“Normal” to “CL” or “CL Holder” if the AUTO CL function is active. Refer to “3.3.1 Selecting the measurement mode” for selection of the measurement mode and to “3.5 Setting measurement conditions” for the AUTO CL function.

3.2.10 Calibrating the touch panel

Do not use any tool with a sharp tip to press the touch panel. The surface of the panel will be damaged, resulting in failure.

Check calibration of the touch panel and correct it if required.

1) Turn power on while pressing the upper right point of the touch panel to display the touch panel check screen.

2) Letters "A" to "I" are displayed on the upper right of the screen. Touch "E" in the center. Touch "E" in the center repeatedly until "(E) Switch" in the center of the screen changes to "OK."

3) After "(E) Switch" changes to "OK," letters "J" to "R" are displayed on the lower left of the screen. Touch

"N" in the center. Touch “N” repeatedly until “(N)

Switch” in the center of the screen changes to “OK.”

The screen returns to the measurement screen when both (E) and (N) have changed to OK.

4) If "E" or "N" does not change to "OK" even when touched repeatedly, press the HOLD button. The touch panel calibration screen appears.

■ 3-10

5) Touch the center of the target on the lower left of the screen with a pointed tool (be careful not to damage the display). When another target appears on the upper right of the screen, touch the center in the same manner.

6) The screen returns to the touch panel check screen.

Touch "E" and “N” again. When both “E” and “N” have changed to OK, the measurement screen appears. If these do not change to "OK" on the touch panel check screen even after calibration, contact your dealer.

3-11 ■

3.3 Measurement procedures

Lenses may be damaged if forced against the nose piece or moved rapidly.

Because a cylindrical lens and non-prescription lens do not have an optical center, the target may not be aligned with the center.

Touch the “Clear” button to delete all measurement data saved in the memory.

Generally, measure the right lens and then the left lens. If measurements are always taken from the left lens and then the right lens, refer to “3.5

Setting measurement conditions” to change the setting appropriately.

When measurement cannot be completed correctly, refer to "6. TROUBLESHOOTING.”

When PD is not measured, place the nose block on the left end, and lock it or bend it downward.

The target may not come to the center of the target area for some types of lens. Refer to “6.

TROUBLESHOOTING” for further information.

The measured value may not be identical to the value indicated on the lens. Refer to “6.

TROUBLESHOOTING” for further information.

■ 3-12

3.3.1 Selecting the measurement mode

Check that the nose piece corresponding to the measurement mode is set before selecting the mode. If the nose piece type is not correct, the measurement mode may not be selected.

(Fig. 1)

(Fig. 2)

1) Touch the Lens button (1) on the measurement screen (Fig. 1) to display the measurement mode selection screen (Fig. 2).

2) Select the measurement mode according to the lens to be measured

3) Touch the “Exit” button (2) to return to the measurement screen without making any change.

Normal mode

Prog mode

Prog [near] mode

Bi-focal mode

Tri-focal mode

CL mode

CL-Holder mode

:

:

:

:

:

:

:

Mode for measuring a mono-focal lens

Mode for measuring a progressive power lens

Mode for measuring a progressive power lens exclusively for reading

Mode for measuring a bifocal lens

Mode for measuring a trifocal lens

Mode for measuring a contact lens

Mode for measuring a contact lens by using the hard contact lens holder

3-13 ■

3.3.2 Measuring mono-focal lens (Normal mode)

When the AUTO PROG function is activated, the measurement mode may be switched to PROG mode if the lens is tilted when placed. If the mode is switched by mistake, select the mono-focal lens measurement screen again to change the mode. When the AUTO PROG function is deactivated, the instrument does not automatically detect the lens type or change the mode to PROG. Refer to “3.5 Setting measurement conditions” for setting the AUTO

PROG function.

(Fig. 1)

(Fig. 2)

1) Measure the lens on the RL measurement screen.

(Refer to “2.5 Operation buttons.”)

2) Select “Normal” on the measurement mode selection screen. (Refer to “3.3.1 Selecting the measurement mode.”)

3) Place the lens on the nose piece for measuring optical glasses (1) so that the front faces up, move the lens table (2), and measure the lens while the lower edges of both sides of the optical frame contact the lens table (2).

4) Slowly move the lens so that the target (3) comes to the center of the target area. The measurement data is shown in real time in the data display section (4).

5) When the optical center of the lens is aligned with the center of the target area, the target (5) becomes larger as shown in Figure 3. When the AUTO HOLD function is ON, the measured value is automatically read. If the AUTO HOLD function is OFF, press the

HOLD button (6) to manually read the measured data. Refer to “3.5 Setting measurement conditions” for setting the AUTO HOLD function.

6) When the AUTO TABLE LOCK function is set to ON, the lens table is automatically locked when the optical center of the lens is aligned with the center of the target area. Press the table lock button (7) to lock the lens table when the AUTO TABLE LOCK function is OFF. While the lens table is locked, pressing the table lock button (7) unlocks the table.

■ 3-14

(Fig. 3)

Refer to “3.5 Setting measurement conditions” for setting the AUTO TABLE LOCK function.

7) When the lens is removed from the nose piece for measuring optical glasses, the target disappears; if the AUTO R/L function is set to ON, the instrument starts to measure the other lens when the lens is set again. When the AUTO R/L is OFF, the R/L screen does not change automatically. Touch the RL tab (8) to change the measurement screen. When the PD measurement function is set to ON (9), moving the nose block (10) to the right and left switches the screen.

8) Touching the “Clear” button (11) deletes the measurement data and returns to the measurement screen for the first lens.

9) When both lenses have been measured, the measurement result display screen (Reading screen) (Fig. 4) automatically appears and the lens table is unlocked. When AUTO VIEW is set to OFF, touch the “Reading” button (12) to display the measurement result display screen (Reading screen) (Fig. 4).

10) Touching the “Exit” button (13) deletes all the measurement data and returns to the measurement screen for the first lens.

(Fig. 4)

3-15 ■

3.3.3 Automatic detection of progressive power lens

Place the approximate center of the lens on the nose piece for measuring optical glasses to detect the progressive area. The instrument may not be able to correctly detect a progressive lens from a peripheral section of the lens even when set.

When the addition (ADD value) is 1D or lower, automatic judgment may not be possible.

(Fig. 1)

When the AUTO PROG function is ON and a progressive power lens is placed on the nose piece for optical glasses in Normal mode, the instrument automatically detects the lens as a progressive power lens, displays “PROG” in the target area, and switches the measurement mode to PROG. Refer to “3.5 Setting measurement conditions” for setting the AUTO PROG function.

3.3.4 Measuring progressive power lens (PROG mode)

a) Measurement procedures

(Back)

(Front)

Lens table

When removing the lens while reading the distance point or reading point, the screen automatically returns to the progressive area detection screen.

(3) Reading point

(1) Progressive area

(2) Distance point

Measurement is conducted according to the steps below.

(Fig. 1)

(1) Detecting the progressive area

(2) Measuring the distance point

(3) Measuring the reading point

■ 3-16

(Back)

(Front)

(Fig. 1)

Lens table b) Detecting the progressive area

Detect the progressive area first.

Progressive area

1) Measure the lens on the RL measurement screen.

(Refer to “2.5 Operation buttons.”)

2) Select “Prog” on the measurement mode selection screen. (Refer to “3.3.1 Selecting the measurement mode.”)

3) Place the lens on the nose piece for measuring optical glasses (1) so that the front faces up and the distance point is nearest to you, move the lens table

(2), and measure the lens while the lower edges of both sides of the optical frame contact the lens table

(2).

4) Slowly move the lens to align the target (3) with the center of the target area. Bring the progressive area onto the nose piece for measuring optical glasses

(1). When the progressive area is detected, a buzzer goes off and the screen changes to measure the distance point.

(Fig. 2)

When the addition is small, the target may not come to the center of the target area. In this case, align the approximate center of the lens with the nose piece for measuring optical glasses and press the HOLD button (4).

(Fig. 3)

3-17 ■

(Fig. 2)

(Fig. 3)

(Back)

(Front)

(Fig. 1) c) Measuring the distance point

Lens table

Measure the distance point next.

1) The distance point is nearest to you. Move the lens to the back to bring the target (1) to the center.When

Distance point the AUTO HOLD function is ON, the distance point value is automatically read when the target (1) is aligned with the optical center. When the AUTO

HOLD function is OFF, press the HOLD button (2) to read the value. Refer to “3.5 Setting measurement conditions” for setting the AUTO HOLD function.

3) When the distance point value has been read, the screen changes to measure the reading point.

■ 3-18

(Back)

(Front)

(Fig. 1)

(Fig. 2)

(Fig. 3)

(Fig. 4)

Lens table d) Measuring the reading point

Reading point

Measure the reading point last.

1) When the screen changes to measure the reading point, the addition (ADD value) (1) appears.

2) Move the lens toward you so that the target (2) is always in the progressive area on the screen. The target moves downward according to the addition.

3) The target shape changes from “+” to “

” as it approaches the reading point. Move the lens toward you slightly, or to the left or right.

4) The target changes to “

” when the reading point is detected.

5) When the AUTO HOLD function is ON, a buzzer goes off and the addition is automatically read.

When the AUTO HOLD function is OFF, press the

HOLD button (3) to read the value. Refer to “3.5

Setting measurement conditions” for setting the

AUTO HOLD function.

6) When the lens is removed from the nose piece for measuring optical glasses, the target disappears; if the AUTO R/L function is set to ON, the instrument starts to measure the other lens when the lens is set again. When the AUTO R/L is OFF, the R/L screen does not change automatically. Touch the “R” or “L” tab (4) to change the measurement screen. When the PD measurement function is set to ON (5), moving the nose block (6) to the right and left switches the screen.

7) Touching the “Clear” button (7) deletes the measurement data and returns to the measurement screen for the first lens.

8) When both lenses have been measured, the measurement result display screen (Reading screen) (Fig. 5) appears automatically. When AUTO

VIEW is set to OFF, touch the “Reading” button (8) to display the measurement result display screen

(Reading screen) (Fig. 5).

3-19 ■

(Fig. 5)

9) Touching the “Exit” button (9) deletes all the measurement data and returns to the measurement screen for the first lens.

■ 3-20

3.3.5 Measuring progressive power lens exclusively for reading (PROG [near] mode)

a) procedures

(Back)

(Front)

(Fig. 1)

When removing the lens while reading the distance point or reading point, the screen automatically returns to the progressive area detection screen.

Lens table

(2) Reading point

Measurement is conducted according to the steps below.

(1) Progressive area

(3) Distance point

(1) Detecting the progressive area

(2) Measuring the reading point

(3) Measuring the distance point

(Back)

(Front)

(Fig. 2)

(Fig. 3)

Lens table b) Detecting the progressive area

Detect the progressive area first.

Progressive area

1) Measure the lens on the RL measurement screen.

(Refer to “2.5 Operation buttons.”)

2) Select “Prog [near]” on the measurement mode selection screen. (Refer to “3.3.1 Selecting the measurement mode.”)

3) Place the lens on the nose piece for measuring optical glasses (1) so that the front faces up and the distance point is nearest to you, move the lens table

(2), and measure the lens while the lower edges of both sides of the optical frame contact the lens table

(2).

4) Slowly move the lens to align the target with the center of the target area. Bring the progressive area onto the nose piece for measuring optical glasses.

When the progressive area is detected, a buzzer goes off and the screen changes to measure the reading point.

3-21 ■

(Fig. 4)

When the addition is small, the target may not come to the center of the target area. In this case, align the approximate center of the lens with the nose piece for measuring optical glasses and press the HOLD button (3).

■ 3-22

(Back)

(Front)

(Fig. 1) c) Measuring the reading point

Lens table

Reading point

Measure the reading point next.

1) Move the lens to align the target (1) with the center of the target area. Because the reading point is on the far side, move the lens toward you.

2) When the AUTO HOLD function is ON, the reading point value is automatically read when the target (1) is aligned with the optical center. When the AUTO

HOLD function is OFF, press the HOLD button (2) to read the value. Refer to “3.5 Setting measurement conditions” for setting the AUTO HOLD function.

3) When the reading point value has been read, the screen changes to measure the distance point.

(Fig. 2)

(Fig. 3)

3-23 ■

(Back)

(Front)

(Fig. 1)

(Fig. 2)

(Fig. 3)

(Fig. 4)

■ 3-24

Lens table d) Measuring the distance point

Measure the distance point last.

1) When the screen changes to measure the reading point, the addition (ADD value) (2) appears.

Distance point

2) Move the lens to the back so that the target (1) is always in the progressive area on the screen. The target (1) moves according to the addition.

3) The target (1) shape changes from “+” to “

” as it approaches the distance point. Move the lens to the back slightly, or to the left or right.

4) The target changes to “ ◎ ” when the distance point is detected.

5) When the AUTO HOLD function is ON, a buzzer goes off and the addition is automatically read.

When the AUTO HOLD function is OFF, press the

HOLD button (3) to read the value. Refer to “3.5

Setting measurement conditions” for setting the

AUTO HOLD function.

6) When the lens is removed from the nose piece for measuring optical glasses, the target disappears; if the AUTO R/L function is set to ON, the instrument starts to measure the other lens when the lens is set again. When the AUTO R/L is OFF, the R/L screen does not change automatically. Touch the “R” or “L” tab (4) to change the measurement screen. When the PD measurement function is set to ON, moving the nose block (5) to the left and right switches the screen.

7) Touching the “Clear” button (6) deletes the measurement data and returns to the measurement screen for the first lens.

8) When both lenses have been measured, the measurement result display screen (Reading screen) (Fig. 5) appears automatically. When AUTO

VIEW is set to OFF, touch the “Reading” button (7) to display the measurement result display screen

(Reading screen) (Fig. 5).

9) Touching the “Exit” button (8) deletes all the measurement data and returns to the measurement screen for the first lens.

The target shape does not change to “

” or

” for some types of lens. In this case, regard the position where the negative addition is largest to be the distance point and press the

HOLD button while the target is in the progressive area.

(Fig. 5)

3-25 ■

3.3.6 Measuring bifocal lens

a) procedures

(Back)

(Front)

(Fig. 1)

Lens table

(2) Reading point

When removing the lens while reading the distance point or reading point, the screen automatically returns to the distance point measurement screen.

(1) Distance point

Measurement is conducted according to the steps below.

(1) Measuring the distance point

(2) Measuring the reading point

(Back)

(Front)

(Fig. 1)

(Fig. 2)

Lens table b) Measuring the distance point

Measure the distance point first

1) Measure the lens on the RL measurement screen.

(Refer to “2.5 Operation buttons.”)

Distance point

2) Select “Bi-focal” on the measurement mode selection screen. (Refer to “3.3.1 Selecting the measurement mode.”)

3) Place the lens on the nose piece for measuring optical glasses (1) so that the front faces up and the distance point is nearest to you, move the lens table

(2), and measure the lens while the rim of the optical frame contacts the lens table (2).

4) The distance point is nearest to you. Move the lens to the back to bring the target (3) to the center.

5) When the AUTO HOLD function is ON, the distance point value is automatically read when the target (3) is aligned with the optical center. When the AUTO

HOLD function is OFF, press the HOLD button (4) to read the value. Refer to “3.5 Setting measurement conditions” for setting the AUTO HOLD function.

6) When the distance point value has been read, the screen changes to measure the reading point.

(Fig. 3)

■ 3-26

(Back)

(Front)

(Fig. 1)

(Fig. 2)

(Fig. 3)

(Fig. 4)

Lens table c) Measuring the reading point

Measure the reading point last.

Reading point

1) When the screen changes to measure the reading point, the addition (ADD value) (1) appears.

2) Move the lens toward you to align the reading lens with the nose piece for measuring optical glasses.

3) The target mark changes to “

” when aligned with the optical center of the reading point.

4) When the AUTO HOLD function is ON, a buzzer goes off and the addition is automatically read.

When the AUTO HOLD function is OFF, press the

HOLD button (2) to read the value. Refer to “3.5

Setting measurement conditions” for setting the

AUTO HOLD function.

5) When the lens is removed from the nose piece for measuring optical glasses, the target disappears; if the AUTO R/L function is set to ON, the instrument starts to measure the other lens when the lens is set again. When the AUTO R/L is OFF, the R/L screen does not change automatically. Touch the “R” or “L” tab (3) to change the measurement screen. When the PD measurement function is set to ON, moving the nose block (4) to the left and right switches the screen.

6) Touching the “Clear” button (5) deletes the measurement data and returns to the measurement screen for the first lens.

7) When both lenses have been measured, the measurement result display screen (Reading screen) (Fig. 5) appears automatically. When AUTO

VIEW is set to OFF, touch the “Reading” button (6) to display the measurement result display screen

(Reading screen) (Fig. 5).

8) Touching the “Exit” button (7) deletes all the measurement data and returns to the measurement screen for the first lens.

3-27 ■

(Fig. 5)

■ 3-28

3.3.7 Measuring trifocal lens

a) procedures

(Back)

(Front)

(Fig. 1)

Lens table

When removing the lens while reading the distance point, middle point, or reading point, the screen automatically returns to the distance point measurement screen.

(3) Reading point

(2) Middle point

Measurement is conducted according to the steps below.

(1) Distance point

(1) Measuring the distance point

(2) Measuring the middle point

(3) Measuring the reading point

(Back) b) Measuring the distance point

Lens table

Measure the distance point first

1) Measure the lens on the RL measurement screen.

(Refer to “2.5 Operation buttons.”)

Distance point selection screen. (Refer to “3.3.1 Selecting the measurement mode.”)

(Front)

(Fig. 1)

3) Place the lens on the nose piece for measuring optical glasses (1) so that the front faces up and the distance point is nearest to you, move the lens table

(2), and measure the lens while the lower edges of both sides of the optical frame contact the lens table

(2).

4) The distance point is nearest to you. Move the lens to the back to bring the target (3) to the center.

(Fig. 2)

5) When the AUTO HOLD function is ON, the distance point value is automatically read when the target (3) is aligned with the optical center. When the AUTO

HOLD function is OFF, press the HOLD button (4) to read the value. Refer to “3.5 Setting measurement conditions” for setting the AUTO HOLD function.

6) When the distance point value has been read, the screen changes to measure the middle point.

(Fig. 3)

3-29 ■

(Back)

(Front)

(Fig. 1)

(Fig. 1) c) Measuring the middle point

Measure the middle point next.

Lens table

Middle point

1) When the screen changes to the middle point measurement screen, the addition (ADD value) appears.

2) Move the lens toward you to align the middle-point lens with the nose piece for measuring optical glasses.

3) The target (2) changes to “ ◎ ” when aligned with the optical center of the middle point.

4) When the AUTO HOLD function is ON, the distance point value is automatically read when the target (2) is aligned with the optical center. When the AUTO

HOLD function is OFF, press the HOLD button (3) to read the value. Refer to “3.5 Setting measurement conditions” for setting the AUTO HOLD function.

(Fig. 2)

5) After the middle point value has been read, the screen changes to the reading point measurement screen.

(Fig. 3)

(Fig. 4)

■ 3-30

(Back)

(Front)

(Fig. 1)

(Fig. 2)

(Fig. 3)

(Fig. 4)

Lens table d) Measuring the reading point

Reading point

Measure the reading point last.

1) When the screen changes to measure the reading point, the addition (ADD value) appears.

2) Move the lens toward you to align the reading lens with the nose piece.

3) The target mark changes to “ ◎ ” when aligned with the optical center of the reading point.

4) When the AUTO HOLD function is ON, the reading point value is automatically read when the target (2) is aligned with the optical center. When the AUTO

HOLD function is OFF, press the HOLD button (3) to read the value. Refer to “3.5 Setting measurement conditions” for setting the AUTO HOLD function.

5) When the lens is removed from the nose piece for measuring optical glasses, the target disappears; if the AUTO R/L function is set to ON, the instrument starts to measure the other lens when the lens is set again. When the AUTO R/L is OFF, the R/L screen does not change automatically. Touch the “R” or “L” tab (4) to change the measurement screen. When the PD measurement function is set to ON, moving the nose block (5) to the left and right switches the screen.

6) Touching the “Clear” button (6) deletes the measurement data and returns to the measurement screen for the first lens.

7) When both lenses have been measured, the measurement result display screen (Reading screen) (Fig. 5) appears automatically. When AUTO

VIEW is set to OFF, touch the “Reading” button (7) to display the measurement result display screen

(Reading screen) (Fig. 5).

8) Touching the “Exit” button (8) deletes all the measurement data and returns to the measurement screen for the first lens.

3-31 ■

(Fig. 5)

3.3.8 Measuring high refractive index lens

It is recommended to use high refractive index lens mode when measuring a high refractive index lens.

Refer to “3.3.2 Measuring a mono-focal lens” and other relevant sections for details of measuring procedures.

Because the reference wavelength of the lens is different from the wavelength of the LED that this instrument uses as the measurement light source, errors may occur in the value measured for a high refractive index lens.

When not using high refractive index lens measurement mode, the ABBE number is always set to 60.

(Fig. 1)

1) Set the ABBE number. Refer to “3.5 Setting measurement conditions” for the setting procedures.

2) Touch the “ABBE” button (1) in operation button menu 2 to change the measurement mode to high refractive index lens mode. The ABBE number (2) appears in the upper right corner of the target area.

In this case, the measured value is automatically corrected based on the set ABBE number.

■ 3-32

3.3.9 Function for measuring UV transmissivity

The UV transmissivity of a lens can be displayed using a bar graph to check whether the lens is UV-cut coated.

The transmissivity at a wavelength of 385 nm is measured. The value displayed on this screen is not the transmissivity for the entire UV range.

When measuring the UV transmissivity, align the lens with the optical center. (Align the target with the center. The UV transmissivity cannot be measured correctly at a point away from the optical center. The UV transmissivity may be 0% at a point significantly far from the optical center even though the lens is not UV-cut coated.

(Fig. 1)

(Fig. 2)

(Fig. 3)

1) Set “UV” to ON. (Refer to “3.5 Setting measurement conditions.")

2) The UV transmissivity bar graph (1) is displayed to the left of the target area when measuring the right lens and to the right when measuring the left lens.

3) When the bar graph (1) does not indicate 100% with no lens on the nose piece for measuring optical glasses, touch the “UV CAL” button (2) to calibrate the bar graph to 100%.

4) The UV transmissivity is measured simultaneously when measuring the dioptry of the lens. A larger value in the bar graph (1) means a higher UV transmissivity. When the bar graph (1) indicates 0%, the lens is UV-cut coated.

5) The measured UV transmissivity is recorded simultaneously with the measured refractive index and can be checked on the measurement result display screen (Fig. 2). The UV transmissivity can also be printed.

6) Touching the “UV” button (3) on the measurement result display screen (Fig. 2) displays the UV transmissivity display screen (Fig. 3).

3-33 ■

3.3.10 Measuring contact lens (CL mode; CL Holder mode)

Always measure contact lenses in CL mode or

CL Holder mode with the nose piece for measuring contact lenses attached. Errors occur in measured values in Normal (optical lens measurement) mode. (Refer to “3.2.9

Replacing the nose piece.”)

The cylindrical dioptry (“C” value) may be measured for a contact lens used for a long period because the lens has deformed.

a) Measuring a hard contact lens (using the hard CL holder)

The following types of contact lenses can be measured using the hard CL holder. When measuring lenses other than those listed below, place the lens directly on the nose piece for measuring contact lenses without using the holder and conduct measurement in CL mode; otherwise large measurement errors may be introduced.

(Fig. 1)

Back

- Base curve : 7.35 mm to 8.25 mm

- Diameter: 8.0 mm to 9.6 mm

(Fig. 2)

(Fig. 3)

Front

1) Select “CL Holder” on the measurement mode selection screen. (Refer to “3.3.1 Selecting the measurement mode.”)

2) Place a hard contact lens on the hard CL holder with the outer surface of the lens facing up. (Place the right lens on the “R” holder and left lens on the “L” holder.)

3) Place the contact lens on the nose piece for measuring contact lenses so that the character ("R” or “L”) on the hard CL holder is at the back, and secure the lens with the lens guide.

4) Move the holder to center the lens. Follow the measurement procedures for a mono-focal lens.

(Refer to “3.3.2 Measuring mono-focal lens.”)

■ 3-34

b) Measuring a hard contact lens (without using the hard CL holder)

1) Select “CL” on the measurement mode selection screen. (Refer to “3.3.1 Selecting the measurement mode.”)

2) Place a contact lens on the nose piece for measuring contact lenses with the outer surface of the lens facing up.

3) Move the lens to center it. Follow the measurement procedures for a mono-focal lens. (Refer to “3.3.2

Measuring mono-focal lens.”)

(Fig. 1)

(Fig. 1) c) Measuring a soft contact lens

Because it is difficult to maintain the proper shape of the lens due to the nature of the lens, precise measurement is difficult.

1) Select “CL” on the measurement mode selection screen. (Refer to “3.3.1 Selecting the measurement mode.”)

2) Wipe any moisture from the contact lens.

3) Place a soft contact lens on the nose piece for measuring contact lenses with the outer surface of the lens facing up.

4) Move the lens to center it. Follow the measurement procedures for a mono-focal lens. (Refer to “3.3.2

Measuring mono-focal lens.”)

3-35 ■

3.3.11 Measuring the pupil distance (PD)

The PD cannot be measured on the single lens measurement screen.

Firmly apply the PD measurement nose block to the pad of the optical frame to ensure correct measurement.

Always take measurements while the bottom edges of both sides of the optical frame contact the lens table to ensure correct measurement.

(Fig. 1)

(Fig. 2)

(Fig. 3)

1) Measure the lens on the RL measurement screen.

(Refer to “2.5 Operation buttons.”)

2) Touch the “PD” button (1) in operation button menu

2 to activate the PD measurement function.

Touching the “PD” button (1) changes the indication for "PD (2)”: ON, OFF, or NA.

"PD: NA": PD measurement is deactivated.

"PD: OFF": PD measurement is activated.

"PD: ON": When PD measurement is activated and the nose block is used

3) Unlock the nose block (3), tilt it toward you, and move it slightly to the right. The PD value (4) is displayed on the screen. When the RPD or LPD value is not displayed while measuring the PD, move the nose block to the left end and then again to the right.

4) Press the pad to the PD measurement nose block, holding the top of the optical frame toward you.

5) Place the lens to be measured on the nose piece for measuring optical glasses, with the front facing up.

The instrument automatically switches right or left

(R/L) according to the position of the nose block.

6) Unlock the lens table and measure the lens while the bottom edges of both sides of the optical frame contact the lens table (Fig. 3). Refer to the measurement procedures for the appropriate lens type.

■ 3-36

3.3.12 Measuring the prism

(Fig. 1)

When there is a prism, the target is not aligned with the center of the target area because of the prismatic power, and the AUTO HOLD function is not available.

Refer to “4. TECHNICAL INFORMATION” for the prism and refraction.

The prism can be indicated in the following three ways.

Touch the “PRISM” button (1) in operation button menu 2 to select how to display the prism. Touching the “PRISM” button (1) alters the prism (2) display. Set TOTAL PRISM display to show the total prismatic power of right and left lenses. (Refer to “3.5 Setting measurement conditions.")

● Orthogonal coordinates: PX, PY (

)

Prism symbols represent the base direction as follows.

O (base out): Outward

I (base in): Inward

U (base up): Upward

D (base down): Downward

● Polar coordinates: PSM, BAS (

, deg.)

PSM : Absolute prismatic power (

)

BAS : Base direction (angle in degrees)

● Eccentricity: DCX, DCY (mm)

The distance from the current measurement position of the lens to the optical center is indicated in the X

(horizontal) and Y (vertical) directions.

DCX: Eccentricity in the X (horizontal) direction

(mm)

DCY: Eccentricity in the Y (vertical) direction

(mm)

When Total PRISM is set to ON, the total prismatic power of the right and left is displayed.

P-H: Prismatic power in the horizontal direction

P-V: Prismatic power in the vertical direction

* The prismatic power in the vertical direction indicates the value based on the right eye.

3-37 ■

(Fig. 1)

(Fig. 2) a) Measuring the prism of a mono-focal lens

1) The examiner and the patient face each other, approximately 40 cm apart.

2) The examiner covers their right eye and instructs the patient to look at the examiner's left eye.

3) Mark a small dot (1-mm diameter or smaller) on the right lens to indicate the center of the pupil.

4) The examiner covers their left eye and instructs the patient to look at the examiner's right eye.

5) Similar to the right lens, mark a small dot (1-mm diameter or smaller) on the left lens to indicate the center of the pupil.

6) Set the position of the marked dot and press the

HOLD button (1) to measure the prismatic power.

The target appears at a point outside the center of the target area according to the measured prismatic power.

7) Repeat these steps to measure the left lens.

8) When both lenses have been measured, the measurement result display screen (Fig. 3) automatically appears to show the prismatic power of the left and right lenses (2). When TOTAL PRISM display is set to ON, the total prismatic power of both lenses appears in the TOTAL column (3).

(Fig. 3)

■ 3-38 b) Measuring the upper/lower prism of a mono-focal lens

1) Measure the optical center (position where both the upper and lower prism is 0.0

) of the right lens.

Measure the lens while the bottom edges of both sides of the optical frame contact the lens table.

2) Press the table lock button to lock the lens table at the position where the right lens was measured.

3) Measure the left lens. While the bottom edges of both sides of the optical frame contact the lens table, place the left lens on the nose piece and align the target in the horizontal direction only.

4) If the target appears at a point above or below the center of the target area, the lens has prisms. When the target is aligned with the center of the target area, there is no upper or lower prism.

5) Press the HOLD button to measure the prismatic power of the left lens. When the TOTAL PRISM function is ON, the total upper/lower prismatic power of the examined glasses is shown. c) Measuring the prism of a progressive power lens

1) Mark a dot at the position for measuring the distance point. Hold the lens to be examined up toward a light to find the two hidden marks, and mark these two marks and the center between them with a marker.

Hidden mark

(Fig. 1)

Can be easily found when holding the lens over your head at a slight angle.

Reading point measurement position

5 – 10 mm

Hidden mark

Hidden mark

Middle point

(Fig. 2)

2) Then mark a dot at a position approximately 5 - 10 mm above the marked center dot as the point for measuring the distance point.

3-39 ■

3) Set the marked position for measuring the distance point on the nose piece for measuring optical glasses and press the HOLD button to take the measurement. The target appears at a point outside the center of the target area according to the measured prismatic power. (* The prismatic degree and power of the distance point vary depending on the position of the measured point. When measuring the prism in this manner, consider possible errors beforehand.)

When measuring the reading point, locate the position where the target cursor changes to " ◎ " and measure the addition.

■ 3-40

3.3.13 Measuring lens on the single lens measurement screen

When AUTO SEND function is activated (Refer to

3.5.4 AUTO setting screen)the instrument doesn’t save new measurement data.

(Fig. 1)

(Fig. 2)

1) Open the single lens measurement screen (Fig. 1).

(Refer to “2.5 Operation buttons.”)

2) Select the measurement mode appropriate for the lens to be measured on the measurement mode selection screen. (Refer to “3.3.1 Selecting the measurement mode.”)

3) Measure the lens. The procedures vary depending on the lens type. Refer to the pages describing the corresponding measurement procedures.

4) Replace the lens with another and measure it. Data for up to 99 measurements can be saved.

5) The latest measurement data is deleted every time the “Clear” button (1) is touched.

6) Touch the “Reading” button (2) to display the measurement result display screen (Fig. 2).

7) Select optional data using the arrow button (3) or keypad (4) and touch the “Retake” button (5) to measure the selected data again.

8) Touch the “Print” button (6) to print the displayed data and the “ALL (All Print)” button (7) to print all measurement data. The “ALL (All Print)” button (7) changes to “Cancel” while printing the measurement data. Touch the “Cancel” button to stop printing the data.

9) Touch the “ALL (All Clear)” button (8) to delete all data.

10) Touch the “Exit” button (9) to return to the measurement screen (Fig. 1) with the measurement data retained.

3-41 ■

3.4 Calculating refractive index of lens

3.4.1 Refractive index calculation function

Use the spherometer to obtain the dioptry of the lens to be inspected.

(Fig. 1)

The dioptry of the spherometer here (D1 and D2) is the value obtained when the refractive index of the lens is 1.523. If the refractive index of the lens measured by your spherometer is not 1.523, set the appropriate refractive index for your spherometer. The refractive index of the spherometer may be changed within the range of 1.400 < ne < 1.900. The new values are saved in the memory and are retained even after turning power off.

(Fig. 2)

When measuring an aspherical lens, errors of

0.03 - 0.05 may occur in the calculated refractive index.

When measuring a progressive power lens or progressive power lens for reading, enter the value read by the spherometer at the measured distance point or the reading point (for progressive power lens for reading). However, if a progressive area exists in the measured distance point or reading point, measurement cannot be completed correctly by the spherometer and errors may occur in the refractive index obtained.

(Fig. 3)

1) Set AUTO HOLD to OFF. (Refer to “3.5 Setting measurement conditions.")

2) Secure the lens with the lens guide when the target is aligned with the center.

3) Press the HOLD button (1) to read the measurement data and then mark points on the lens.

Refer to "3.2.6 Point marker” for details on the point marker.

■ 3-42

(Fig. 4)

Measuring the front dioptry (D1)

(Fig. 5)

(Fig. 6)

(Fig. 7)

4) Touch the “Reading” button (2) to display the measurement result display screen (Fig. 3), and then the “CAL” button (3) to display the refractive index calculation screen (Fig. 4).

5) Touch the refractive index field (4) to activate it and enter a value using the keypad when you need to change the refractive index. Touch the “Default” button (5) to reset the value to the default (1.523).

6) Remove the lens from the nose piece for measuring glasses and measure the dioptry of the lens with points marked using the spherometer.

7) Place the lens on the leveled table as shown in

Figure 5 and apply the spherometer in the direction of the marked points. Read the value of the spherometer (D1: front dioptry). Repeat to measure the dioptry of the opposite side (reverse side) (D2: rear dioptry).

8) Touch the D1 or D2 entry field (6) to select an item and enter a value using the keypad to display the refractive index (7). Enter values from +25D to -25D for D1 and D2. Otherwise an error occurs and

"ERROR!" appears in the calculation result. An error also occurs when the sum of D1 and D2 is 0.

9) Touch the “Exit" button (3) to return to the measurement result display screen (Fig. 3).

3-43 ■

3.5 Setting measurement conditions

3.5.1 Setup screen

Set operation conditions on this screen. Settings made on this screen are effective unless otherwise changed.

Settings made using the operation buttons on the measurement screen are not reflected in the settings on the Setup screen. The settings on the Setup screen are applied when power is turned on.

(Fig. 1)

(Fig. 2)

1) Touch the “Setup" button (1) on the measurement screen to display the Setup screen (Fig. 2).

2) Select a setting item and change the settings as needed on the corresponding screen.

3) Touch the “Exit" button (2) to return to the measurement screen (Fig. 1).

MODE

FUNCTION

AUTO

PRINT

DISPLAY

OUTPUT

: Items related to measurement

(Refer to “3.5.2 MODE setting screen.”)

: Items related to extensions

(Refer to “3.5.3 FUNCTION setting screen.”)

: Items related to AUTO functions

(Refer to “3.5.4 AUTO setting screen.”)

: Items related to printing

(Refer to “3.5.5 PRINT setting screen.”)

: Items related to screen display

(Refer to “3.5.6 DISPLAY setting screen.”)

: Items related to external communication

(Refer to “3.5.7 OUTPUT setting screen.”)

■ 3-44

3.5.2 MODE setting screen

(Fig. 1)

When the sum of the spherical dioptry (“S” value) and cylindrical dioptry ("C" value) is “0” or larger, the cylindrical dioptry (“C” value) for mixed reading is automatically displayed as a positive reading; if the sum is less than “0,” the

“C” value is displayed as a negative reading.

The ABBE number set here is the value when measuring a lens with a high refractive index.

When measuring a lens in HI mode, the measured value is corrected with the ABBE number set here. The ABBE number in Normal mode is set to “60.”

When a button is touched, the button appears as if it has been is pressed to indicate that it is selected. Touch the

“Setup” button (1) to return to the Setup screen and the

“Exit” button (2) to return to the measurement screen.

PRISM (setting of prism display)

NON : No prism displayed

PXY : PX and PY (display in orthogonal coordinates) r/ θ : PSM and BAS (display in polar coordinates)

DXY : DCX and DCY (eccentricity)

CYL (setting of CYL display)

: Negative

STEP (sets increment to indicate measured value)

0.25

0.12

0.01

: In increments of 0.25D (

: In increments of 0.12D (

)

: In increments of 0.01D (

)

)

: Positive

3-45 ■

R/L (R/L switching order)

R : Measure lenses in an optical frame from

L the right lens.

: Measure lenses in an optical frame from the left lens.

Measure (setting on the measurement screen)

RL : RL measurement screen

S : Single lens measurement screen

ABBE (setting of ABBE number)

Set the ABBE number in HI mode. Values from 20 to

65 can be set in increments of 5 (10 steps in total).

(“35” is the initial setting).

3.5.3 FUNCTION setting screen

When the instrument is started with CL MODE set to ON, the accuracy check at startup is only conducted for CL measurement, and no functions for measuring optical glasses are available. Start the instrument with CL MODE set to OFF when measuring optical lenses.

FUNCTION 1

When a button is touched, the button appears as if it has been is pressed to indicate that it is selected. Touch the

“Setup” button to return to the Setup screen and the

“Exit” button to return to the measurement screen.

Touching the FUNCTION1 and FUNCTION2 tabs switches the setting screens.

(Fig. 1)

UV (UV transmissivity)

ON : Displays a bar graph of UV transmissivity

OFF on the measurement screen.

: A bar graph of UV transmissivity is not displayed on the measurement screen.

PD (function for measuring distance between pupils)

OFF : Deactivates the PD measurement function.

■ 3-46

(Fig. 2)

BEEP (buzzer)

ON : A buzzer goes off.

OFF : A buzzer does not go off.

L VALUE (sets whether to display "L” value)

Sets whether to display the distance from the lower edge of the optical frame to the optical center (“L” value) on the measurement screen.

ON

OFF

: Displays the “L” value.

: The “L” value is not displayed.

TOTAL PRISM (sets whether to display the total prism)

Sets whether to display the total prismatic power of both eyes when measuring the prism.

ON : Displays the total prismatic power.

OFF : The total prismatic power is not displayed.

CL MODE (selects CL measurement mode)

Starts the instrument in CL mode or CL Holder mode.

When starting the instrument in CL mode or CL

Holder mode, the nose piece for measuring contact lenses needs to be set. When the nose piece for measuring contact lenses is not set, the error message “NOSEPIECE ERR!” appears.

Holder

CL

OFF

: Starts the instrument in CL Holder mode.

: Starts the instrument in CL mode.

: Starts the instrument in Normal mode.

SCREEN SAVER (screensaver/all off setting)

OFF : Deactivates the screensaver function.

(Refer to “3.2.5 Screensaver / All off function.”)

CONTENT

Allows you to set CONTENT.

(Refer to “3.5.5 PRINT setting screen.”)

3-47 ■

3.5.4 AUTO setting screen

AUTO 1

When a button is touched, the button appears as if it has been is pressed to indicate that it is selected. Touch the

“Setup” button to return to the Setup screen and the

“Exit” button to return to the measurement screen.

By pressing the “AUTO1”, “AUTO2” button, screen can be switched.

AUTO HOLD (automatic reading of measurement value)

Sets whether to read measurements automatically.

(Fig. 1)

OFF : Measurement values are not automatically read.

AUTO R/L (automatic switching of right and left lenses)

Sets whether to automatically switch the right and left lenses to be measured.

OFF : The lens is not automatically switched.

AUTO VIEW (automatic display of measurement results)

Sets whether to automatically jump to the measurement result display screen after measurement is completed on the RL measurement screen.

OFF result display screen.

: The measurement result display screen does not appear automatically. Touch the

“Reading” button to display the measurement result display screen.

AUTO PROG (automatic switching to PROG mode)

Sets whether to automatically switch to PROG mode when the instrument detects the lens type as a progressive lens.

OFF : Only the result of progressive lens detection is displayed; the instrument does not automatically switch to PROG mode.

AUTO CL (automatic switching to CL mode)

Sets whether to automatically switch to the contact lens measurement mode when the nose piece for measuring contact lenses is set.

OFF : Does not automatically switch to CL mode.

HOLDER : Automatically switches to CL Holder mode.

■ 3-48

(Fig. 2)

AUTO 2

AUTO TABLE LOCK (automatic lock of the lens table)

Sets whether to automatically lock the table when reading the measurement data in Normal mode.

ON : Automatically locks the lens table.

OFF : Lock the table manually by pressing the table lock button.

AUTO PRINT(automatic print after measurement)

When the instrument measures,it prints automatically and simultaneously.

OFF : Deactivates auto send function

AUTO SEND (automatic export after measurement)

When the instrument measures, it exports data automatically and simultaneously.

OFF : Deactivates auto send function

AUTO POWER OFF (time set for auto power off)

.

OFF : Deactivates auto power off function

10min mode when no button is used for 5 minutes

Switchs to ‘Screeensaver / All off function’ mode when no button is used for 10minutes

3-49 ■

3.5.5 PRINT setting screen

(Fig. 1)

(Fig. 2)

When a button is touched, the button appears as if it has been is pressed to indicate that it is selected. Touch the

“Setup” button to return to the Setup screen and the

“Exit” button to return to the measurement screen.

PRINT

ON

OFF

: Activates the print function.

: Deactivates the print function.

PRINT CONTENT

Sets whether to print the characters set on the

CONTENT edit screen in the last line of the printout.

ON : Prints the description set on the CONTENT

OFF edit screen.

: The description set on the CONTENT edit screen is not printed.

CONTENT (Refer to “3.5.3 FUNCTION setting screen.”)

Displays the description to be printed on the last line of the printout. Touch “Edit" to display the

CONTENT edit screen (Fig. 2) and enter up to 72 characters (24 characters x 3 lines) to be printed.

The description entered is displayed at the top of the screen. Follow the procedures below to edit

CONTENT.

1) Touch a character key on the screen to enter it.

Touch any tab (1) at the bottom to switch to upper case, lower case, numbers, or symbols.

2) Use the up/down/right/left arrow keys to move the cursor. Touch the keyboard to insert the character at the position of the cursor.

3) Touch the “Clear” button to delete the entire line.

Touch the “BS (backspace)” button to delete the character before the cursor.

4) Touch the “Setup” button (2) to return to the Print setting screen. The entered description is displayed in the CONTENT field. Touch the “Exit" button (3) to return to the measurement screen.

■ 3-50

PRINT LAYOUT (sets the print layout)

The printing layout can be set.

Vertical printing

: Prints S, C, and A in one vertical line.

Horizontal printing

: Prints S, C, and A in one horizontal line. The data can be printed on shorter print paper in this mode.

3.5.6 DISPLAY setting screen

When a button is touched, the button appears as if it has been is pressed to indicate that it is selected. Touch the

“Setup” button to return to the Setup screen and the

“Exit” button to return to the measurement screen.

COLOR Arrangement (sets screen color)

Sets the color of the screen.

(Fig. 1)

(Fig. 2)

(Fig. 3)

Fresh : French color base screen

Custom : Settings on the COLOR Customize screen

(Fig. 2)

COLOR Customize (color edit)

The screen color can be changed as desired. Touch the “Edit” button (1) to go to the COLOR Customize screen (Fig. 2). Select the section of color to be changed using the position selection button (2) and select a color from the pallet (3).

There are three types of pallets: Bright, Soft, and

Dark. Set optional colors for the background of the

RL tab on the RL measurement screen or the background in S mode. When color settings are changed here, the color of (4) on the DISPLAY setting screen (Fig. 1) will also be changed.

KEY Arrangement

The layout of operation button menus 1 and 2 in the upper section of the measurement screen can be changed. Touch the “Edit” button (5) to go to the

BUTTON setting screen (Fig. 3).

The button layout for the measurement screen is displayed in two lines at the top of the setting screen.

(position selection button)

Specify the button to be customized using the position selection button (6) and then select a

3-51 ■

function from the function list (7) shown in the lower half of the setting screen. Touch the “ENTER” button

(8) to cancel the selection. Touch the “Default” button (9) to reset the layout to the default settings.

3.5.7 OUTPUT setting screen

When a button is touched, the button appears as if it has been is pressed to indicate that it is selected. Touch the

“Setup” button to return to the Setup screen and the

“Exit” button to return to the measurement screen.

By pressing the “OUTPUT1”, “OUTPUT2” button, screen can be switched.

Link

This function cannot be used in this instrument.

(Fig. 1)

COM

Enables data communication with external devices via RS-232C.

The current settings are displayed in the white frame.

Touch the "Edit” button (1) to change the communication settings. (Refer to “3.5.8 COM setting screen.”)

FORMAT

Communication specification can be switched.

Refer to “3.7.1 RS-232C Communication format” for the communication format

* Default settin g

(Fig. 2)

1*

2

: PRISM x 1,Unsigred ADD

Only orthogonal coordinate is included in the export data format for prism measurement.

There is no sign for addition (ADD value)

: PRISM x 3,Signed ADD

Orthogonal coordinate, polar coordinates, eccentricity are included in the export data format for prism measurement.

Sign is added to addition (ADD value)

■ 3-52

3.5.8 COM setting screen

(Fig. 1)

When a button is touched, the button appears as if it has been is pressed to indicate that it is selected. Touch the

“Setup” button to apply changes and return to the

OUTPUT screen. Touch the “Exit” button to return to the measurement screen.

Values specified with an asterisk (*) are the default setting.

BAUD RATE

Sets the baud rate.

2400 / 4800 /9600 / 19200 / 38400* bps

DATA LENGTH [bit]

Sets the data length.

7 bit / 8 bit*

STOP BIT [bit]

Sets the stop bit length.

1 bit* / 2 bit

PARITY

Sets the parity.

NON* / EVEN / ODD

FLOW CONTROL

Sets the flow control.

NON / XON XOFF / RTS CTS*

3-53 ■

3.6 Printout

3.6.1 Printing

(Fig. 1)

3.6.2 Printout details

Check that the paper roll is set in the built-in printer. (Refer to "5.3.3 Printer paper.")

No data is printed if “PRINT” is set to “OFF” on the Setup screen. Set “PRINT” to “ON” to activate the printout function. (Refer to “3.5

Setting measurement conditions.")

The printer in this instrument is thermosensitive.

This means the measurements printed on the paper will fade over time. Make a copy when storing the measurement data for long periods.

1) After measuring the lens, the measurement result display screen (Fig. 1) appears.

2) Touch the "Print" button to print out the data. Blank paper is fed when the "Print" button is touched with no data measured (no measurement data is saved in the internal memory).

3) Even when printing measurement data once, touching the "Print" button prints out the same measurement data repeatedly until the "Exit" button is touched.

Refer to “3.5 Setting measurement conditions” for setting the descriptions on the printout.

(1) R/L

(2) SPH (spherical dioptry)

(3) CYL (cylindrical dioptry)

(4) AXS (axis angle that specifies astigmatism direction)

(5) ADD (addition)

(6) L (Distance from the lower edge of the optical frame to the optical center)

(7) UV (UV transmissivity)

(8) CONTENT

(Fig. 1)

■ 3-54

3.7 Communication format

3.7.1

RS-232C Communication format a) FORMAT1

3-55 ■

b) FORMAT2

■ 3-56

4. TECHNICAL INFORMATION

4.1 Prism

4.1.1 Prism and refraction

1) Two non-parallel refracting surfaces generate prismatic power. The incident light is refracted toward the base.

(Fig. 1)

(Fig. 2)

(Fig. 3)

Base

2) A lens can be regarded as a group of prisms. A convex lens is a group of prisms with the base in the center, so light rays are refracted toward the center and concentrated.

Light converges toward the center.

Base

3) The point where light is not refracted by the prism is called the optical center and the prismatic degree at this point is 0

. The prismatic degree becomes larger at points farther from the optical center.

4) Because a concave lens is a group of prisms with the base around the outside, light rays are refracted outwards and radiated.

Base

Light is refracted outwards.

Base

5) Also for a concave lens, the point where light is not refracted by the prism is called the optical center and the prismatic degree at this point is 0

. The prismatic degree becomes larger at points farther from the optical center.

4-1 ■

4.1.2 Example of prism displayed using the auto lens meter

Optical center =

Measurement light

Optical center Measurement light

Lens

Nose piece

When the measurement light is placed at the optical center, the target cursor appears at the center and the prismatic degree becomes 0 △ .

As the measurement light moves away from the optical center, the target cursor also moves away from the center and the prismatic degree increases.

(Fig. 1) (Fig. 2) (Fig. 3)

■ 4-2

4.2 How to improve accuracy of marking

Deactivate the AUTO HOLD function and conduct measurement manually. Set "PRISM" to "DCX/DCY" and mark points.

Roughly align the center and angle, referring to

"DCX/DCY" (distance from the optical center) and axis angle.

When lenses are set in an optical frame, push the frame firmly against the lens table and roughly align the optical center.

Use the lens guide to finely adjust the lens position.

Lift the lens guide slightly to avoid damaging the lens while adjusting the position.

Align the optical center and axis angle, and then mark points.

The precision of marking will be improved when

"DCX/DCY" is closer to 0.0.

It is more difficult to improve the marking accuracy when the spherical dioptry (“S" value) of the lens is lower, for example 0.25D, 0.50D, etc.

4-3 ■

4.3 How to measure PD more precisely

Deactivate the AUTO HOLD function and conduct measurement manually. Set "PRISM" to "DCX/DCY" and measure the PD.

Push the frame firmly against the lens table and the nose block against the pad, and roughly align the optical center. Use the lens guide to finely adjust the lens position. Lift the lens guide slightly to avoid damaging the lens while adjusting the position. After the optical center is aligned, press the HOLD button. The PD can be measured more precisely when "DCX/DCY" is closer to 0.0.

It is more difficult to improve the accuracy of PD when the spherical dioptry (“S" value) of the lens is lower, for example 0.25D, 0.50D, etc.

■ 4-4

5. INSPECTION AND MAINTENANCE

5.1 Inspection

The instrument cannot be started correctly if the protective glass is damaged or contaminated. Check that the protective glass is free of damage or contamination.

(Refer to “5.2.2 Cleaning protective glass.”)

Check that the UV bar graph on the measurement screen indicates 100% without a lens placed on the nose piece after the instrument is started. If the graph does not indicate 100%, refer to “2.5.1 Operation button menu

1” and calibrate the graph.

5-1 ■

5.2 Routine maintenance

Hold the plug when disconnecting the power cord from the outlet to avoid placing excessive force on the cord. Pulling the cord may damage the inner core wires, resulting in electric shock or fire.

Turn power off and disconnect the power plug from the outlet before starting maintenance.

Do not use organic solvents such as thinner, benzene, or acetone to clean the instrument.

Solvents such as these may corrode the surface of the instrument.

Disconnect the power plug from the outlet and place the dust cover over the main unit when not used for 1 month or longer.

Do not touch the optical parts of the measurement window, etc. and keep these parts free from dust. Fingerprints and dust affect measurement accuracy.

5.2.1 Maintenance of main unit

Place the dust cover over the main unit when not being used.

● Wipe the main unit's case, LCD, and operation panel with a dry cloth if dirty. When very dirty, clean the surface using a cloth dampened with diluted neutral detergent.

■ 5-2

(Fig. 1)

5.2.2 Cleaning protective glass

Do not damage the protective glass. Otherwise, the reliability of the measurement data lowers significantly.

Periodically clean the protective glass under the nose piece with soft cloth or equivalent.

Remove the nose piece and blow dust from the protective glass using a commercial blower or similar. If dust or dirt is stuck to it, lightly wipe the glass with lens cleaning paper, etc.

(Fig. 2)

5-3 ■

(Fig. 1)

5.2.3 Cleaning the collimeter lens

Do not touch the collimeter lens directly.

Otherwise, the lens is contaminated or damaged, and the reliability of the measurement data lowers significantly.

Check the collimeter lens periodically. If it is contaminated, clean it with soft cloth or the like.

1) Lift the lens guide lever slightly to unlock and lower it.

2) Use a commercial blower or similar to remove dust from the collimeter lens (2). If dust or dirt is stuck to it, lightly wipe the glass with lens cleaning paper, etc.

■ 5-4

5.3 Replacing consumables

5.3.1 Fuses

Disconnect the power cord from the outlet when replacing fuses. Otherwise you may get an electric shock, resulting in death or serious injuries.

Use fuses specifically designed for this instrument.

When the instrument does not work correctly after fuses have been replaced, there may be other causes of the problem. Turn off the instrument immediately and contact your dealer.

1) Turn power off and disconnect the power plug from the outlet.

2) Disconnect the power cord from the power terminal.

3) Insert the tip of a flat screwdriver into the groove on the top of the fuse holder under the power terminal, release the lock, and remove the holder case.

4) Remove the blown fuse from the fuse holder case and install a new fuse.

5) Return the holder case to the fuse holder in the reverse order of removal.

(Fig. 1)

5-5 ■

5.3.2 Ink cartridge

Ink cartridge

Spring

Securing screw

(Fig. 1)

(Fig. 2)

Replace the ink cartridge when dots become light.

Replacement ink cartridges are optional parts.

Cartridges are available from your dealer.

Always use dedicated genuine ink cartridges.

Do not touch the marker tip of the ink cartridge.

Otherwise the marker tip may be deformed and the cartridge may become unusable.

Do not tighten the securing screw of the ink cartridge too tightly. The ink cartridge may be broken.

Be very careful not to drop the spring or screw while replacing the ink cartridge. It is recommended to take appropriate precautions so that the spring or screw can be easily found if dropped.

Only use the provided securing screw and spring. If you lose the screw and/or spring while replacing the ink cartridge, contact your dealer.

1) Lift the lens guide.

2) Lower the point marker without turning the marker lever.

3) Hold the ink cartridge with one hand and remove the securing screw using a Phillips screwdriver.

4) Remove the ink cartridge and spring together from the point marker.

5) Attach the spring to a new ink cartridge, install it to the point marker, and secure it with the screw.

■ 5-6

5.3.3 Printer paper

(Fig. 1)

(Fig. 2)

Replace the roll of printer paper when red lines appear on the sides of the printout.

Never touch the cutter in the printer. Otherwise, you may be injured.

Always use the specified paper for the printer.

Using other types of paper may cause printer failure.

Do not start printing without paper set in the printer. The printer head may be damaged.

Do not pull paper forcibly. Trying to pull the paper out may cause printer failure.

1) Press the button (1) to open the printer cover.

2) Take out the old roll of printer paper.

3) Install a new roll of printer paper. If the roll is installed in the wrong direction, nothing will be printed.

4) Close the printer cover with the end of the paper slightly protruding from the outlet. Press the cover firmly until you hear a click.

5) Cut off any unnecessary paper.

(Fig. 3)

5-7 ■

5.3.4 Nose piece

5.4 Storing

Do not use a damaged nose piece. The lens being measured may be damaged.

The tip of the nose piece for measuring optical glasses may be damaged due to rubbing by lenses, so it is recommended to keep a spare nose piece for measuring glasses.

Install the instrument in a location free of water or chemicals. Any water or chemicals entering the instrument may cause an electric shock or failure.

Do not store the instrument in a location where chemicals are stored or gases may occur. Spilt chemicals or vapor may enter the instrument and result in fire.

Disconnect the power cord from the outlet to ensure safety when the instrument is not operated for 1 month or longer.

Install the instrument in a location not influenced by direct sunlight, high temperature and humidity, and air containing dust, salt, and/or sulfur.

Store the instrument in a leveled stable place free of vibration or mechanical impact.

Otherwise, measurement cannot be conducted correctly. The instrument may also topple over or fall down, resulting in fire or a fatal accident.

Place the dust cover over the main unit when not being used. The measurement accuracy will deteriorate if the optical section in the instrument becomes dirty.

■ 5-8

5.5 Disposal

Keep the box and packing materials for use when moving or transporting the instrument.

Keep the packing materials and box together.

When disposing of the main unit and/or packing materials, sort them by material type and abide by local government rules and regulations.

5-9 ■

This page is intentionally left blank.

■ 5-10

6. TROUBLESHOOTING

Check the following first when you find any problem with the instrument.

If the problem is not solved even after checking the applicable item listed below, contact your dealer to request inspection and/or repair.

Do not remove the cover of the instrument. You may be directly exposed to high voltage sections.

Do not take any actions other than those specified below.

If the problem is not solved even after checking the applicable item listed below, contact your dealer to request inspection and/or repair.

6.1 General operation

● Nothing appears on the display when the power switch is turned on.

Faulty connection of the power cord

Firmly connect the power cord to the power terminal.

Blown fuse

Check for blown fuses, and replace fuses as needed (refer to “5.3.1 Fuses”). If the replaced fuse blows again, there may be other problems. Contact your dealer for repair.Faulty adjustment of the LCD contrast

Adjust the contrast of the LCD using the contrast adjustment knob. Refer to "3.2.4

Contrast adjustment of display."

6-1 ■

■ 6-2

● The instrument stops with the initial error message displayed on the initial screen.

A lens or other object is on the nose piece when starting the instrument.

Remove the lens or object from the nose piece and touch the “Retry” button on the screen.

The nose piece is tilted when set.

Set the nose piece correctly and touch the “Retry” button on the screen.

The protective glass under the nose piece is dirty.

Remove the nose piece, clean the protective glass, reset the nose piece, and touch the “Retry” button on the screen. (Refer to “5.2.2 Cleaning protective glass.”)

Condensation has formed on the internal optical parts.

When the instrument is transported from a cold place to a warm place, condensation may form and "INITIAL

ERROR!" may appear. In this case, do not use the instrument until the unit is adequately warmed and any condensation has dried. When transporting the instrument from a cold place to a warm place, load the instrument in a comparatively warm place in the truck.

The instrument was turned on with the contact lens measurement nose piece set in optical glasses measurement mode.

Replace the nose piece with the one for measuring optical glasses and touch the

“Retry” button on the screen. When it is necessary to turn on the instrument with the contact lens measurement nose piece set, change the measurement

setting to start the instrument in contact lens measurement mode. (Refer to “3.5

Setting measurement conditions.")

The ALM-Zero is designed to check measurement accuracy to ensure correct measurement when turned on

(automatically check that "0.0D (with nothing placed on the nose piece)" conforms to "0.0D" set at the time of delivery). When the measurement light is obstructed during this accuracy check, the instrument detects this as an error

(condition not 0.0D) and displays the initial error message (INITIAL ERROR!).

Reference

The measurement range of the

ALM-Zero is 5 mm in diameter when measuring glasses and 2.5 mm in diameter when measuring contact lenses, and the opening size of each nose piece varies depending on the item to be measured. Because the ALM-Zero inspects the accuracy of these two types of measurement ranges simultaneously when started, the measurement light is obstructed if the nose piece for measuring contact lenses is placed, resulting in initial error (NOSE Piece

ERROR!).

6-3 ■

● Values of "S," "C," and "A" are not "0" although there is no lens on the nose piece.

/ Measurement is conducted but the data is faulty.

The nose piece is tilted when set.

Set the nose piece appropriately and turn power on again.

The protective glass under the nose piece is dirty.

Remove the nose piece, clean the protective glass, reset the nose piece, and turn power on again. (Refer to “5.2.2

Cleaning protective glass.”)

● Nothing is printed when the "PRINT" button is touched.

”PRINT” is set to “OFF.”

Set "PRINT" to "ON." Refer to “3.5.5

Print setting screen.”

The printer paper is not set in the correct direction (reversed).

Set the printer paper correctly. Refer to

"5.3.3 Printer paper."

● The printed data is too light or dark.

The printer paper is old.

Replace the printer paper with a new roll.

(Refer to "5.3.3 Printer paper.")

The specified printer paper is not used.

Replace the printer paper with the specified type. (Refer to "5.3.3 Printer paper.")

■ 6-4

● The PD value is not displayed when the PD measurement nose block is moved.

The PD measurement nose block is not reset.

Move the PD measurement nose block to the left end (stopper position).

The PD measurement function is not available. (PD on the lower left of the screen is "PD: .")

Activate the PD measurement function to display “PD:ON” or “PD:OFF” on the lower left of the screen. (Refer to “3.5.3

FUNCTION setting screen.”)

● The AUTO R/L (function to automatically switch left and right) does not work when the next lens is set.

The AUTO R/L function is set to "OFF."

Set "AUTO R/L" to "ON." Refer to “3.5.4

AUTO setting screen.”

The instrument does not detect that the lens has been replaced.

Remove the lens from the nose piece for measuring optical glasses when measurement is complete and set another lens after the target disappears.

The PD measurement function is set to

“ON.”

Deactivate the PD measurement function, or lock the nose block at the left end and set the mode to "PD: OFF." In particular, when operating the instrument with the nose block moved downward to avoid contact, move the nose block to the left end to set the mode to "PD:OFF."

(Refer to “3.5.3 FUNCTION setting screen” or “3.2.8 How to avoid the nose block.”)

6-5 ■

Reference

The AUTO R/L (function to automatically switch right and left) is designed to detect that right and left has been switched when the next lens is placed after measurement of the first lens, and to change "R" and "L" on the measurement screen.

Reference

When the PD measurement function is activated, the instrument detects left or right of the lens according to the position of the nose block, not after replacement of the lens. The AUTO R/L function is active when the PD measurement function is "PD: OFF" or "PD: ."

● A different button to the one touched becomes active.

The touch panel is not correctly calibrated.

Check calibration of the touch panel and correct it if required. (Refer to “3.2.10

Calibrating the touch panel.”)

6.2 General operation for measuring lenses

● The target is not aligned with the center of the target area.

/ The AUTO HOLD function does not work.

A mono-focal lens with a spherical dioptry

("S" value) of 0.0D and which only has a cylindrical dioptry value ("C" value) was measured.

When a mono-focal lens only has a cylindrical dioptry ("C" value) and its spherical dioptry ("S" value) is 0.0D, the optical center is not a single point but exists as a line. Therefore, the target cannot be aligned with the center of the target area and the AUTO HOLD function does not work. In this case, press the HOLD button to read the value measured in the physical center of the lens.

■ 6-6

A progressive power lens with a spherical dioptry ("S" value) of 0.0D was measured.

No optical center exists on a progressive power lens with a spherical dioptry ("S" value) of 0.0D. Therefore, the target cannot be aligned with the center of the target area and the AUTO HOLD function does not work. In this case, move the lens slightly back, forth, to the right and left at a point approximately 10

- 15 mm above the center of the optical frame, and press the HOLD button at the position where there is least fluctuation of the SPH value to take the measurement.

● The cylindrical dioptry ("C" value) is displayed for the measurement data of a hard contact lens without astigmatism.

A hard contact lens that has been used for a long period was measured.

Recently, soft materials are used for many types of HCLs. Therefore, lenses may become deformed when used for a long period. When a deformed hard contact lens is measured, the distortion caused by deformation may be indicated as the cylindrical dioptry ("C" value).

● The frame interferes with the main unit and the lens is tilted when measured.

There are a variety of frame designs and the temple tip may contact the main unit of the instrument when measuring a lens in a large frame.

Set glasses upside down. In this case, pay extra attention to correctly identify right and left.

6-7 ■

6.3 Measuring progressive power lens

● The target is not aligned with the center of the target area when detecting the progressive area. The screen does not change to the distance point measurement screen.

The progressive power is small for a progressive lens with an addition (ADD) of

1D or lower, or for other progressive lenses mainly for reading point or for middle distance and reading, so the target may not be aligned with the center of the target area when detecting the progressive area.

The progressive area is located at the center of the lens (or the center of the lens frame in the case of lenses set in an optical frame). Set the lens at these approximate positions and press the

HOLD button to display the distance point measurement screen.

● The target is not aligned with the center of the target area when measuring the distance point.

The target may not be aligned with the center of the target area for a progressive lens with a large reading point or a progressive lens for reading and middle distance.

Set the lens at a point approximately 10 -

15 mm above the center of the lens, move the lens slightly back, forth, to the right and left, and press the HOLD button at the position where there is least fluctuation of the SPH value to take the measurement.

■ 6-8

● The reading point cannot be detected. / The target shape does not change to "

" or "

."

This instrument cannot automatically detect the reading point when the addition

(ADD) is less than 1D. (This is because the progressive degree of a lens with an addition (ADD) of less than 1D is small, and the reading point is often detected incorrectly.)

Place the target in the progressive area.

Press the HOLD button to take the measurement when the addition (ADD) is the largest.

When lenses have a long progressive area or are to be set in a short optical frame, the reading point is too close to the frame or out of the frame, and may not be detected.

Place the target in the progressive area.

Press the HOLD button to measure the reading point when the addition (ADD) is the largest. Note that the measured addition is smaller than the actual value.

● Measurement values vary.

The lens is not set correctly.

Push the lens firmly against the nose piece for measuring optical glasses. The lens must not be tilted or separated from the nose piece for measuring optical glasses. To improve the measurement accuracy, set "AUTO HOLD" to "OFF" and press the HOLD button to take the measurement after checking that the lens firmly contacts the nose piece for measuring optical glasses.

6-9 ■

■ 6-10

● The degree specified by the lens maker is different to the value measured by the lens meter.

The lens is not set correctly.

Push the lens firmly against the nose piece for measuring optical glasses. The lens must not be tilted or separated from the nose piece for measuring optical glasses. To improve the measurement accuracy, set "AUTO HOLD" to "OFF" and press the HOLD button to take the measurement after checking that the lens firmly contacts the nose piece for measuring optical glasses.

An optical design for ensuring "natural viewing" was recently introduced for some progressive power lenses. When measuring these lenses with the lens meter, the cylindrical dioptry ("C" value) may be larger or the addition (ADD) may be smaller.

Check the lens brand and determine whether the error is because of the characteristics of the lens. However, because the largest error is approximately +/-0.25D, it is more realistic to treat the error as measurement tolerance.

The measurement point specified by the lens maker is different to the measurement point detected by the lens meter.

Set "AUTO HOLD" to "OFF." Set the lens at the measurement point specified by the lens maker and press the HOLD button to measure the distance point and reading point. The measurement point specified by the lens maker can be checked by attaching the test sticker supplied by the lens maker or referring to the fitting manual. However, because the largest error is approximately +/-0.25D, it is more realistic to treat the error as measurement tolerance.

Reference

Definition of measurement point for distance/reading points of the progressive power lens on this instrument

[Distance]

(1) The prism in both left and right directions is approximately 0.0

.

(2) The progressive power is approximately 0.

(3) The power reaches the maximum on the negative side.

[Reading]

(1) The prism in both left and right directions is approximately 0.0

.

(2) The progressive power is approximately 0.

(3) The addition reaches the maximum.

● When measuring the distance point, the target is aligned with the center when the lens is significantly offset to the nose or ear side within the optical frame.

A progressive power lens with a prism was measured.

Refer to “3.3.12 Measuring prism."

A lens prescribed for oblique astigmatism of approximately 45° or 135° was measured.

Set the lens at a position approximately

10 - 15 mm above the center of the optical frame and press the HOLD button to take the measurement.

Reference

Definition of target mark for distance point of progressive power lens

- The target mark indicates the point where the prism in the right and left directions becomes 0.0

.

6-11 ■

- The target is centered at a position where the prism in the right and left directions becomes 0.0

and the dioptry reaches the maximum on the negative side.

6.4 Measures to prevent flaws on lenses

1) The lens may be damaged during examination when handled as follows.

The lens is forced against the nose piece or moved rapidly.

Move the lens slowly.

(Fig. 1)

(Fig. 2)

The lens is moved too far using the lens guide.

Do not move the lens too far using the lens guide.

The nose piece or lens guide has dust on it.

Clean the nose piece and lens guide frequently to always keep them clean.

The lens has dust on it.

Wipe any dust off the lens before starting measurement.

The nose piece tip is damaged.

Replace the damaged nose piece with a new one.

(Fig. 3)

(Fig. 4)

■ 6-12

6.5 Error messages

6.5.1 Startup screen

● INITIAL ERROR!

Initial error

Refer to “6.1 General operation.”

6.5.2 Measurement screen

● LT ERROR!

Insufficient light

Clean the lens or the protective glass under the nose piece.

Check that no part of the optical frame is on the nose piece.

High-density lenses or lenses with excessive flaws cannot be measured.

● NOSEPIECE ERR!!

The measurement mode does not match the nose piece type.

Change the nose piece to the appropriate one for the measurement mode. Change the nose piece to the type appropriate for the measurement mode (contact lens measurement mode or optical glasses measurement mode).

● OVER FLOW!

Over/under flow

The lens is outside of the measurement range and cannot be measured.

6-13 ■

● DATA OVER FLOW (only for the single lens measurement screen)

A measurement was taken after the number of retained data sets has exceeded the maximum level (99).

Print or transfer the saved data, and delete it.

● MT ERROR!

Failure of DC motor

Contact your dealer.

6.5.3 Measurement result screen

● Print OFF!

”PRINT” is set to “OFF.”

Set "PRINT" to "ON." (Refer to “3.5

Setting measurement conditions.")

● PRT ERROR!

Paper is jammed in the printer.

Remove jammed paper. (Refer to "5.3.3

Printer paper.")

● RS ERROR!

Communication with the external device is not available. (Communication cable is not connected.)

Connect the communication cable to the external output terminal. (Refer to “3.2.2

Connection to external device.”)

■ 6-14

6.5.4 Refractive index measurement screen

● D*ERROR!

The value of “D1 + D2” is “0.”

Enter values so that “D1 + D2" is not “0.”

D1 or D2 is outside the range of +25D -

-25D.

Enter values within the range +25D -

-25D.

● ne ERROR!

The refractive index "ne" of the spherometer is outside of the effective range.

Enter a value within the effective range

(1.400 < ne < 1.900) of the refractive index of the spherometer.

6-15 ■

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■ 6-16

(Fig. 2)

(Fig. 3)

(Fig. 4)

7. SPARE PARTS AND ACCESSORIES

7.1 Spare parts

(Fig. 1)

The following spare parts and accessories are available from your dealer of this instrument. Contact your dealer to order them.

● Nose piece for measuring glasses (Fig. 1)

Specify the part type as "ALM-Zero nose piece for measuring glasses."

It is recommended to keep a spare nose piece.

● Printer paper (Fig. 2)

Specify the paper type as "ALM-Zero printer paper."

● Point marker ink cartridge (Fig. 3)

Specify the part type as "ALM-Zero ink cartridge."

● Fuse (Fig. 4)

Specify the part type as “ALM-Zero fuse.”

7-1 ■

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■ 7-2

8. SPECIFICATIONS

8.1 Specifications

8.1.1 Measurement

● Range

Spherical Power (SPH)

Cylindrical Power (CYL)

Axial angle (Axis)

Additional Power (ADD)

Prism Power

● Increment

Diopter

Prism

● Mode

Cylinder

Prism

±25D

±10D

0 to 180 ゜

-2 to 10D

0 to 10 △

0.01/0.12/0.25D

+ / ± / -

Rectangular / Polar Coordinates /

Displacement

● Measurement

● Wavelength

● LED Power

● Diameter of the beam

● Diameter of the lens

● Interpupillary Distance

● Measurement Object

● Abbe Numbers

● Transmittance of UV

660nm

Class I LED Product

φ 2.5mm, φ 5.0mm

φ 20 to 120mm (more than φ 5mm for CL)

50 to 86mm (step: 0.5mm)

Spectacle lens / Contact lens / Optical lens

20, 25, 30, 35, 40, 45, 50, 55, 60, 65

The peak of the wavelength is 385nm.

8.1.2 Data control

● Display

● Alignment

● Printer

● External Communication Port

5.7 inch TFT LCD (320×240dot) with touch panel

Cross Cursor

Thermal Printer (384 dots / line)

RS-232C, USB (USB1.1)

8-1 ■

8.1.3 Dimensions and Power Source

● Dimensions 205(W)×249(D)×445(H) mm

● Weight

● Voltage

Approx. 6kg (13.2 lbs.)

AC100 - 240V

● Frequency

● Power Consumption

50/60 Hz

35 - 55VA

8.2 Noises

This instrument generates machine noise when:

● Measurement (rotation sound of the motor)

● Locked the Lens Table

● Unlocked the Lens Table

8.3 Operating environment

● Installation Indoor

● Operating Temperature +5

to +40

(Less than 80% relative humidity, No dew condensation)

● Power fluctuation

● Installation Category

Less than ±10% of nominal voltage

● Pollution Degree

● Storage Temperature

● Storage Humidity

2 (as per IEC 664)

-20

to +60

10 to 95%RH

■ 8-2

9. INDEX

A

ABBE number ......................................... 1-7, 2-7

ADD .................................................... 2-14, 2-16

ADD value .................................................... 3-24

AUTO CL ..................................................... 3-10

AUTO HOLD ......................................... 2-6, 3-14

AUTO HOLD button ..................................... 2-10

AUTO PROG ............................................... 3-14

AUTO R/L .................................................... 3-15

AUTO RL ....................................................... 2-7

AUTO TABLE LOCK ............................. 3-9, 3-15

AUTO VIEW ................................................. 3-15

AXIS ............................................................. 2-16

C

Cartridges ...................................................... 5-6

CL holder ..................................................... 3-34

Clear button ................................................. 2-11

CL-Holder mode ........................................... 3-13

COLOR Arrangement ................................... 3-51

COLOR Customize ...................................... 3-51

COM ............................................................ 3-52

CYL .............................................................. 2-16

CYL button ................................................... 2-10

D

D*ERROR! ................................................... 6-15

D1 .................................................................. 1-7

D2 .................................................................. 1-7

E

External output terminal (RS-232C) ............... 2-3

F

Fuse ............................................................... 7-1

Fuses .............................................................. 5-5

H

HOLD button .................................................. 2-1

I

Increment button .......................................... 2-10 ink cartridge .................................................... 7-1

K

KEY Arrangement ......................................... 3-51

L

L (length) ........................................................ 2-7

L Value .......................................................... 2-19

Lens button ................................................... 2-10

Lens table ....................................................... 2-1

LT ERROR! ................................................... 6-13

M

mono-focal lens .............................................. 1-6

N

n ............................................................1-7, 2-16 ne ................................................................... 1-7 ne ERROR! .................................................. 6-15

Nose block ...................................................... 2-1

Nose piece ............................................. 2-1, 7-1

NOSE PIECE ERROR! ................................. 3-10

O

OVER FLOW! ............................................... 6-13

9-1 ■

P

Page button ................................................. 2-10

PD .................................................................. 2-7

PD button ..................................................... 2-12

PRINT LAYOUT ........................................... 3-51

Printer ............................................................ 2-3

Printer paper ........................................... 5-7, 7-1

Printout ........................................................ 3-54

PRISM button............................................... 2-12

PROG mode ................................................ 3-16 progressive .................................................. 3-39 progressive area .......................................... 3-21

PRT ERROR! ............................................... 6-14

PSM ............................................................... 1-7

PX ................................................................ 2-16

PX, PY ........................................................... 1-7

PY ................................................................ 2-16

R

Reading button ............................................. 2-10 reading point ................................................ 3-21

Refractive index ............................................ 2-14

RL measurement .......................................... 3-29

RL tab ............................................................. 2-7

RS ERROR! ................................................. 6-14

RS-232C ......................................................... 3-3

S

S/RL button................................................... 2-12

Setup button ................................................. 2-10

SPH .............................................................. 2-16

SPH (S) .......................................................... 1-7

T

Tri-focal ........................................................ 3-29

Tri-focal mode ............................................... 3-13

U

UV ............................................... 1-7, 2-16, 3-33

UV CAL button .............................................. 2-11

UV transmissivity .......................................... 3-33

UV-cut ........................................................... 3-33

■ 9-2

RIGHT MFG.CO.,LTD.

1-47-3, Maenocho, Itabashi-ku, Tokyo, 174-8633 Japan

Tel: +81-3-3960-2275 Fax: +81-3-3960-2285

TOHOKU RIGHT MFG.CO.,LTD.

OPHTHALMIC SERVICE

45-1 Aza-yashikimae, Nakamura Ohsato-cho,

Kurokawa-gun, Miyagi 981-3521, Japan

Tel: +81-22-359-3113 Fax: +81-22-359-3213

24JQ9090-00

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