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INTERNATIONAL
STANDARD
ISO/IEC
21118
First edition
2005-08-15
Information to be included in
specification sheets — Data projectors
Information à inclure dans les feuilles de spécifications — Projecteurs
de données
Reference number
ISO/IEC 21118:2005(E)
© ISO/IEC 2005
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ISO/IEC 21118:2005(E)
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ii
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ISO/IEC 21118:2005(E)
Contents
Page
Foreword............................................................................................................................................................ iv
1
Scope ..................................................................................................................................................... 1
2
Terms and definitions........................................................................................................................... 1
3
Measuring methods and conditions ................................................................................................... 2
4
Items in specification sheets............................................................................................................... 2
Annex A (normative) Specification sheets ...................................................................................................... 6
Annex B (informative) Measuring methods and conditions ........................................................................ 10
Bibliography ..................................................................................................................................................... 15
© ISO/IEC 2005 – All rights reserved
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ISO/IEC 21118:2005(E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are members of
ISO or IEC participate in the development of International Standards through technical committees
established by the respective organization to deal with particular fields of technical activity. ISO and IEC
technical committees collaborate in fields of mutual interest. Other international organizations, governmental
and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information
technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of the joint technical committee is to prepare International Standards. Draft International
Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as
an International Standard requires approval by at least 75 % of the national bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
ISO/IEC 21118 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 28, Office equipment.
iv
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INTERNATIONAL STANDARD
ISO/IEC 21118:2005(E)
Information to be included in specification sheets — Data
projectors
1
Scope
This International Standard is applicable for information to be included in specification sheets about front
projection type, fixed resolution and light valve system, and data projectors having a computer signal input
port capable of projecting the image outputs from a computer, VCR or other devices.
NOTE 1
It also covers Data projectors that have a video signal input port as well as a computer signal input port.
NOTE 2
It is not applicable to units with a rear projection system or with a video input terminal alone.
2
Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1
light valve
a system which creates an optical image by electrical means using light from a separate source
2.2
telephoto end
the maximum focal length position of the zoom lens
2.3
wide-angle end
the minimum focal length position of the zoom lens
2.4
resize
process which converts an input image signal from one resolution and dot number to an image with a different
resolution or dot number
2.5
lens shift
a specific function which enables changing the location of the image on the projection screen by moving the
lens vertically (up/down) and/or horizontally (left/right) without moving the projector itself
2.6
image position(a measure of the affect of lens shift)
the reference point is defined as the point on the projection screen that is intersected by the physical axis of
the projection lens
up image position = (Distance between top edge and reference point)
down image position = (Distance between bottom edge and reference point)
left image position = (Distance between left edge and reference point)
right image position = (Distance between right edge and reference point)
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ISO/IEC 21118:2005(E)
when image position is variable by lens shift feature, maximum and minimum positions should be
specified
example specification of image positions for a data projector with lens shift:
up/down 1:10 to 10:1, right /left 1:3 to 3:1
this means that the up image position with maximum lens shift upward is 10 times the up image position
with no lens shift
similarly the down image position with maximum lens shift downward is 10 times the down image position
with no lens shift
likewise, the right image position with maximum lens shift right is 3 times the right image position with no
lens shift
likewise, the left image position with maximum lens shift is 3 times the left image position with no lens
shift
note that if there is no lens shift in the horizontal direction right/left 1:1 would be the value given for
right/left image position.
2.7
front projection system
a projection system (of a projector) focuses an image onto a screen by projected light. The image from a lightreflecting screen is viewed from the projector side of the screen
2.8
rear projection system
a projection system (of a projector) focuses an image onto a screen by projected light
NOTE
3
The image is viewed from the opposite side of the light transmitting screen.
Measuring methods and conditions
Annex B (informative) shows measuring methods and conditions for the performance specification items in
Table 1.
4
Items in specification sheets
Item, item specification and specification examples are shown in Table 1. They are fundamental properties,
which must be included in the specification sheets.
The lower-limit values of the projector must maintain 80% of the values in specification sheets for the
brightness, contrast ratio and light output uniformity.
The specification sheets must have a statement, which says that they are made in accordance with this
standard.
They must use the same number as Table 1 exactly.
Items may be omitted if the projector has no function for it. When an item is omitted, numbers of the following
items may not be changed.
An example specification sheet is shown in Annex A (normative).
NOTE
When items and values are extracted from specification sheets, they can be listed in any order and their
number may not be specified.
2
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ISO/IEC 21118:2005(E)
Table 1 — Performance specification item
No.
Item
Item specification
1
Product number, type
The product name, type name, model
name, or model number numbers, or product numbers must be
entered.
2
Display system
3
Optical system
The light valve type must be indicated.
The optics for colour separation and
convergence must be indicated.
Specification example
a)
LCD, micro mirror, other
b)
transmitting, reflecting
c)
single panel, 3 panel, other
a)
Dichroic mirror separation-prism
convergence system
b)
Time sharing separation/
convergence system
c)
other
4
Display device
4.1
Size of effective display
area
Size, number of panels and aspect ratio must 1,3” × 3, aspect ratio 4:3
be indicated.
4.2
Number of pixels
The numbers of pixels per sheet, numbers of 480 000 pixels (800 × 600) × 3 sheets,
sheets, and total numbers of pixels must be
1 440 000 pixels in total
indicated.
4.3
Other
Features of display device must be indicated. without micro lens
5
Projection lens
5.1
Zoom
Zoom magnifications must be indicated.
Power zoom (1× to 1,4×)
5.2
Focus
Method of focus adjustment must be
indicated.
Manual, or powered
5.3
Lens shift
Image position for maximum and minimum
lens shift (if any) must be specified
Up/down 1:10 to 10:1, right /left 1:3 to
3:1 (in case of variable lens shift in
both horizontal and vertical directions)
Up/down 10:1 right/left 1:1 (in case of
no right/left lens shift)
5.4
Focal length (mm)
Focal length and Aperture must be indicated. f = 52 mm – 73 mm
Aperture
f/2,5 –2,9
6
Light source
The light source lamp type (name), wattage,
and quantity must be indicated. Lamp
number can be omitted if only one lamp is
used.
300 W metal halide lamp
7
Screen size
[Projection distance]
The minimum and maximum sizes of the
projected image must be indicated. The
associated projection distance must also be
indicated. Telephoto end is for minimum size
and wide-angle end for maximum size must
be given for a zoom lens.
Image size 0,4 m × 0,3 m minimum to
2 m × 1,5 m maximum for projection
distance 0,8 m minimum to 4 m
maximum
8
Number of colours
The maximum number of reproducible
colours must be indicated.
Full-colour reproduction (16 700 000
colours)
9
Light output
The light output on a projected screen must
be measured and indicated.
Average value of production units must
be indicated.
800 lm (see Annex B, B.2.2)
10
Contrast ratio
(full white/full black)
The ratio of illuminance between the white
Average value of production units must
and black areas of images must be indicated. be indicated.
200:1 (full white/full black)
(see Annex B, B.2.3)
11
Light output uniformity
The ratio between the center luminance and
4-peripheral-point average luminance of a
full-white image must be indicated.
© ISO/IEC 2005 – All rights reserved
Average value of production units must
be indicated.
85 % (see Annex B, B.2.4)
3
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ISO/IEC 21118:2005(E)
Table 1 (continued)
No.
Item
Item specification
Specification example
12
Audio output
The output power must be indicated. Either
10 W + 10 W stereo
stereo or monaural must be indicated as well. (see Annex B, B.3)
13
Speaker
The diameter and quantity must be indicated. ∅5 cm × 2
14
Displayable scanning
frequency
14.1
Horizontal
The range of displayable horizontal
frequencies must be indicated.
14.2
Vertical
The range of displayable vertical frequencies 50 Hz to 120 Hz
must be indicated.
15
Display resolution
15.1
For computer signal
input
The maximum display resolution for
computer input must be indicated. Notational
convention method must be indicated as well.
When display resolution is beyond the panel
native resolution, it also must be indicated.
The displayable video signal type (system)
and resolution must be indicated. If there are
two or more signal types (systems), all of
them may be specified.
Maximum display resolution
1024 dots × 768 dots (resizing)
Panel display resolution
800 dots × 600 dots
15.2
For video signal input
If there are two or more signal types
(systems), all of them may be specified.
NTSC: 550 TV lines,
(S-video input)
PAL/SECAM: 350 TV lines
(see Annex B, B.4)
16
Computer signal
input/output
The signal type, connector type and number
of connectors must be indicated. Any order of
entries and contents are acceptable. If the
terminal has several functions, this may be
entered as a remark.
RGB input: 2 lines
RGB output: 1 line
RGB input port (mini-D-sub 15-pin)
RGB output port (mini-D-sub 15-pin)
Audio input port (RCA pin L/R)
17
Video signal
input/output
The signal type, connector type, and number
of connectors must be indicated. Any order of
entries and contents are acceptable. If the
terminal has several functions, this may be
entered as a remark.
Video/S-video input: 1 line Video
input port (RCA pin) S-video port
(mini-DIN 4-pin) Audio input port
(RCA pin L/R)
18
Control signal
input/output
The control signal input/output port and other RS-232C and mouse input ports
relevant descriptions must be given. Any
order of entries and contents are acceptable.
19
Acoustic Noise
If the noise values other than the maximum
value is entered, its working condition must
be indicated.
20
Operating temperature
(operating humidity)
The temperatures (relative humidity) at which 5 °C to 35 °C (20 % to 70 %)
the product normally operates must be
indicated. The humidity need not always be
indicated.
21
Power requirements
The rated voltage and frequency must be
indicated.
AC100V, 50/60Hz
22
Power consumption
The maximum power consumption must be
indicated in watts. Information about standby
and power-saving modes can optionally be
entered.
380 W (see Annex B, B.6)
4
15 kHz to 100 kHz
Noise measurements must be made by
ISO 9296 [1].
35dB(A weighted)
At eco mode, 30dB(A weighted)
(see Annex B, B.5.2)
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