User`s manual

Genie HM-HC Series-GigE Vision Camera Technical Specifications  115
9.60
12.80
1
6
.
0
0
m
m
(1 inch)
6.60
8.80
1
1
.
0
0
(2/3 inch)
5.40
7.20
9
.
0
0
(1/1.8 inch)
4.80
6.40
8
.
0
0
(1/2 inch)
3.60
4.80
6
.
0
0
(1/3 inch)
Comparison of Standard Sensor Sizes (dimensions in mm)
The following figure graphically shows the use of two different lenses with the Genie HM 1400 which has a sensor
of 10.40mm by 7.60mm (a diagonal of 12.88mm).
 The outer circle shows the illumination coverage of a 1 inch lens where a sensor of up to 16mm diagonal is
evenly exposed.
 The inner circle shows the illumination coverage of a 2/3 inch lens where a sensor of up to 11mm diagonal is
evenly exposed.
The obvious conclusion is that a 2/3 inch lens will produce image vignetting at the sensor edges, while a 1 inch lens
will evenly expose the sensor but at a greater cost in optics. The choice in lens is therefore a trade off of cost verses
application requirements.