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CCTV Lenses Section 3-1
3-1 CCTV Lenses
When using a Camera without a light (F150-S1A or F160-S1), refer to the following graph to select the appropriate Lens and Extension Tube. The lens will differ depending on the size of the measurement object and the distance from the Camera.
3-1-1 Optical Chart
The values in the following chart are approximations, and the Camera must be adjusted after it is mounted.
Lens model: 3Z4S-LE
5,000
3,000
2,000
1,000
500
300
200 t: Extension Tube length
100
50
4 5 10 20 30 50 100 200 300 500
Field of vision L (mm)
The X axis of the graph shows field of vision L (mm), and the Y axis shows the camera distance A (mm). The curves on the graph show the relationship between the field of vision and camera distance for each CCTV lens. The values are significantly different for each lens, so double-check the model of the lens before using the graph. The “t” values indicate the lengths of the Extension Tubes. The value “t0” shows the case where an Extension Tube is not needed and the value “t5.0” shows the case where a 5-mm Extension Tube is used.
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CCTV Lenses Section 3-1
Example
When a 3Z4S-LE C1614A CCTV Lens is being used and a field of vision of
40 mm is needed at the measurement object, a camera distance of 200 mm and 1-mm Extension Tube are required.
Camera
Extension Tube t @ (mm)
Lens
Camera distance A (mm)
Measurement object
Field of vision L (mm)
3-1-2 Lenses and Lens Diameters
Max. outer dia.
Unit: mm
1"-32UN
-2A
30 dia.
Lens
3Z4S-LE C418DX
3Z4S-LE B618CX-2
3Z4S-LE C815B
3Z4S-LE B1214D-2
3Z4S-LE C1614A
3Z4S-LE B2514D
3Z4S-LE B5014A
3Z4S-LE B7514C
Total length
4.8 mm
6.5 mm
8.5 mm
12.5 mm
16.0 mm
25.0 mm
50.0 mm
75.0 mm
Focal length
F1.4
F1.4
F1.4
F1.4
F1.4
Brightness
F1.8
F1.8
F1.5
Maximum outer diameter
40.5 mm dia.
48 mm dia.
42 mm dia.
42 mm dia.
30 mm dia.
30 mm dia.
48 mm dia.
62 mm dia.
Total length
35.5 mm
42 mm
40 mm
50 mm
33 mm
37.3 mm
48 mm
79 mm
---
Filter size
M40.5
P0.5
M27
P0.5
M46
P0.75
M58
P0.75
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CCTV Lenses Section 3-1
3-1-3 Extension Tubes
One or more Extension Tubes can be inserted between the lens and the Camera to focus the Camera image. Use a combination of one or more of the six tubes to achieve the required length.
Extension Tube
Model Maximum outer diameter
3Z4S-LE EX-C6 31 dia.
Length
Set of 6 tubes
0.5 mm, 1 mm, 5 mm, 10 mm, 20 mm, and
40 mm
Length: 40 mm 20 mm 10 mm 5 mm 1.0 mm 0.5 mm
Precaution • Do not use the 0.5-mm and 1.0-mm Extension Tubes attached to each other. Since these Extension Tubes are placed over the threaded section of the Lens or other Extension Tube, the connection may loosen when more than one 0.5-mm or 1.0-mm Extension Tube are used together.
• Reinforcement may be required for combinations of Extension Tubes exceeding 30 mm if the Camera is subject to vibration.
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