Line Scan Camera SK6288GKOC-L Manual (06.2015) • shar
ed_CameraContr
ol(2)_Adjustments-1.indd (06.2015)
14
3 Camera Control and Performing a Scan
SK6288GKOC-L
Instruction Manual
(06.2015)
© 2015
Schäfter + Kirchhoff GmbH
•
Hamburg
3.2 Adjustments for Optimum Scan Results
•
Lens focussing
•
Sensor alignment
•
Gain/Offset
•
Shading correction
•
Integration time
•
Synchronization of the sensor exposure and
the object surface velocity, trigger mode
options
Prior to a scan, the following adjustments and parameter settings should be considered for optimum scan
signals:
Start with the signal window / oscilloscope display. Any changes in the optical system or camera parameters
are displayed in real-time when using an open dialog box.
Lens Focussing
To focus a line scan camera, the variations in edge steepness at dark/bright transitions and the modulation of the
line scan signal are desisive.
•
Adjust the focus using a fully opened aperture to restrict the depth of field and to amplify the effects of focus
adjustments.
•
A fully open aperture might cause a too high a signal amplitude, in which case the integration time should be
shortened, as described in
Integration Time, p. 18
.
Out of focus: edges are indistinct, signal peaks
blurred with low density modulation
Optimum focus: dark-bright transitions are
sharp edged, highly modulated signal peaks
with high frequency density variations
3 Camera Contr
ol and Performing a Scan
