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INSTRUCTION
MANUAL
AUTO IRIS LENS
4. NOMENCLATURE AND FUNCTIONS
Focus ring knob
Use this knob to adjust focus ring.
CT-0812GB
CT-0412GB
CT-0312GB
Please follow the instructions in this manual to obtain the
optimum results from this unit.
We also recommend that you keep this manual handy for future
reference.
1. SAFETY PRECAUTIONS
• Before installation or use, be sure to carefully read all the
instructions in this section for correct and safe operation.
• Make sure to observe the instructions in this manual as the
conventions of safety symbols and messages regarded as very
important precautions are included.
• We also recommend you keep this instruction manual handy for
future reference.
WARNING
Indicates a potentially hazardous situation which, if
mishandled, could result in death or serious personal injury.
• Don't look through the lens directly at the sunshine this could
cause blindness.
CAUTION
Indicates a potentially hazardous situation which, if
mishandled, could result in moderate or minor personal
injury, and/or property damage.
• Ensure that the lens is securely tightened. If it is not tightened
or firmly secured after installation, it could fall down, possibly
resulting in personal injury.
2. GENERAL DESCRIPTION
Each DC controlled auto iris lens is designed to correct for
aberration over the visible and infrared regions. This feature
allows the lens to maintain images in focus even in the infrared
region, being suited for the Day/Night camera that ensures
around-the-clock surveillance.
3. HANDLING PRECAUTIONS
• Because the lens features a CS mount with its flange back (the
distance between the mount surface and the focal point) of 12.5
mm long, make sure that the camera you use has the same
flange back length.
• Use the lens under only DC control.
• Do not give a great shock nor vibration to the lens.
• Avoid using the lens (camera) in dusty area or being splashed
by water.
• Do not touch directly or rub the lens surface firmly. When dust
is on the lens, blow off with a blower or brush it off. When soiled
with oil or dirt, gently wipe down the lens spirally and outwardly
from the center with a lens cleaning paper damped slightly with
a liquid cleaner sold in the market.
• Unnecessarily rotating the iris control may make the video
signal level too high or too low, causing the lens to malfunction.
CS mount
Screw the lens into the CS mount
of the camera.
Lens cable
Connects to the camera output connector for lens
after the lens is mounted to the camera.
5. MOUNTING TO CAMERA
Step 1. Screw the lens into the CS mount of the camera.
Step 2. After a few rotation, the lens is put in the slippery
condition, but keep on turning the lens clockwise till it
comes to a stop.
Step 3. At this point, as the lens can be rotated 330 °
counterclockwise, adjust the lens cable bushing to the
left position of the camera as shown above.
6. FOCUS ADJUSTMENT
Loosen the focus ring knob, then focus the camera on the object
by turning the focus ring. The object that was brought into focus
in bright locations could be out of focus in dark conditions. It is
recommended to focus the camera on the object in dark
conditions or using a commercially available ND filter. For the
camera equipped with the adjustment switch, set it to "ON"
position before focusing.
7. SPECIFICATIONS
Model Number
Focal Length
Maximum
Aperture Ratio
Image size
Angle of View
CT-0812GB
8 mm
1 : 1.2
CT-0412GB
4 mm
CT-0312GB
2.8 mm
4.8 (H) x 3.6 (V) mm
Diagonal: 43.6 ° Diagonal: 80.8 ° Diagonal: 114.6 °
Horizontal: 34.5 ° Horizontal: 65.6 ° Horizontal: 93.2 °
Vertical:
25.7 ° Vertical: 49.7 ° Vertical: 70.7 °
Aperture Range F 1.2 – F 360
Object Distance 0.2 m (7.87")
9.89 mm
8.57 mm
8.58 mm
Back Focus
Length
12.5 mm
Flange Back
Length
CS mount
Lens Mount
– 20 ° C to +50 ° C (– 4 ° F to +140 ° F)
Operating
Temperature
Black, matte
Finish
34 (W) x 41.5 (H) x 34.7 (D) mm
Dimensions
(1.34" x 1.63" x 1.37")
43 g (0.09 lb)
40 g (0.09 lb)
44 g (0.1 lb)
Weight
Note
The design and specifications are subject to change without notice for
improvement.
URL: http://www.toa.jp/
Ver.2.00
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