User`s manual

5-5
5
Connection and Installation Methods
There is a relationships as shown on page 5-7 to page 5-9, among the camera installation distance, the
field of view (in the vertical/horizontal direction), the lens focal length f, the aperture setting, the focal
length, and the resolution.
[Example]
When the IV-S30C1/C3 camera is used, the camera installation distance is 500 mm, and the field of
view (in the horizontal direction) is 110 mm, the optimum lens can be selected as described in the
following procedure. The required information is taken from the table on page 5-7.
1
3
2
Lens focal length f=16mm
Camera
installa-
tion
distance
View
(mm)
Hori-
zontal
Vertical
Focal
length
Reso-
lution

450
500
600
96.3
107.4
129.6
102.8
114.6
138.3
16.6
16.5
16.4
200.7
223.9
270.1
(mm)
(mm)
(µm)
Notes
- The values shown in the tables on page 5-7 to 5-9 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.
- When the IV-S30C1/C3 camera is used.
• 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.
- When the IV-S30C2/C4 camera is used
• Use a commercially available ø17 mm lens.
• When a wide-angle lens is used, the distortion at the edges will be larger.
1 Selecting the lens focal length f
Follow the line for a camera installation distance of 500 mm for the view (in the horizontal
direction) that is closest to 110 mm, which is 114.6 mm. A 114.6 mm field of view is shown in the
column for a lens focal length f, of 16 mm. Therefore, a lens with focal length of 16 mm is
considered to be optimum.
2 Considering the focal length
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 controller 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 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.
See "Glossary" for the diefinition of resolution.
114.6mm
512(pixelcount)
223.9 µm