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2
2 Considering the focal length
2
2
2
The actual focal length, 16.5 mm, is longer than the lens focal length, f = 16 mm, by 0.5 mm.
However, if the camera installation distance of 500 mm is within the focal range (distance from
an object) of the actual lens (f = 16 mm), you can use it.
1. The focus range of the IV-S20L16 camera lens (f = 16 mm) built into the IV-S20 is from 50
mm to infinity. Therefore, the camera installation distance of 500 mm is within the focal
range, and the IV-S20L16 lens can be used.
2. When another lens (with a focal range of 16 mm) is used, if its focal range exceeds 500 mm,
install a commercially available C mount close-up shot ring. Use a ring that is 0.5 mm thick
(16.5 - 16 = 0.5 mm).
3
3
3
3
3 Resolution
When the displayed image fills the whole monitor screen, and the view (in the horizontal
direction) is 114.6 mm wide, the resolution is 223.9 µm.
114.6mm
512(pixelcount)
See "Glossary" for the diefinition of resolution.
Notes
- The values shown in the tables on page 6-5 and 6-6 are only reference data for installation.
These values may vary, according to the characteristics of lenses you are using. When using
any lens, check the data using the actual equipment.
- If you want to use a camera lens other than the IV-S20L16, buy a lens with a C type lens base.
(The IV-S20L16 has a C type lens base.)
- A lens with too short focal length (f = 4.2 mm or 8 mm) will distort the edges of the field of view.
The spectral sensitivity characteristics of the CCD element used in the CCD camera are listed
below.
- Spectral sensitivity characteristics of the CCD element
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
400
500
Installation Conditions and Method
223.9 µm
600
700
Wave length nm]
6-5
800
900
6
1000
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