NED
XCM8060SA_8040SA_6040SA
UME-0034-03
46
4.10
Setting Offset
In the figure below, the horizontal axis indicates the amount of incident light and
the vertical axis indicates the output.
Fs shows the output at saturation. Dd shows the output at darkness. (Both Fs and
Dd are digital.) Se shows the saturation current, or the amount of exposure when
the output saturates.
Figure 4-10-1 Saturation Exposure and Dark Current Output
By setting the offset, you can set the Y-intercept arbitrarily. DF shows the digital
offset value. The gradient of the line does not change.
Figure 4-10-2 Offset Adjustment
Adjust amount of offset in accordance with the requirements of your camera
system.
Dd
Fs
Se
Amount of Incident
Light (lx
・
s)
Output
Fs : Saturation Output
Dd : Dark Current
Se : Saturation Exposure
Output
DF : Offset Value
DF
Amount of
Incident Light
(lx
・
s)