IDS uEye series User Manual

© 2009 IDS Imaging Development Systems GmbH174
User Manual uEye Cameras V3.32
9.2.6 Flange Back Distance
Calculating the Flange Back Distance
To correctly determine the flange back distance of a uEye camera, you need to consider the
distance between the lens flange and the active area of the sensor and, additionally, the type and
thickness of any materials inserted into the optical path.
The distance in air between the threaded flange and the active area is 17.526 mm with C-mount
lenses and 12.526 mm with CS-mount lenses.
This mechanical distance can change due to the material-specific refractive index of the inserted
materials. The glass cover of the sensor and all filters inserted into the optical path must be taken
into account in the calculation.
Figure 153: Calculating the flange back distance (schematic
illustration)
Designation
Description
a
Distance from threaded flange to active sensor area (flange back distance)
17.526 mm
*1)
for C-mount
12.526 mm
*1)
for CS-mount
x
Distance from threaded flange to PCB
e
Distance from active sensor area to PCB
d
Thickness of the glass cover of the sensor
f
Filter thickness (optional)
n
Refractive index
h
Maximum sensor height above the PCB
*1)
This distance describes the equivalent in air (see introduction above)

IDS uEye series Specifications

General

Brand	IDS
Model	uEye series
Category	Digital Camera
Language	English