THORLABS WFS20-14AR, Operation Manual

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Wavefront Sensor
than the detected spot area. Otherwise, increased calculation errors may still occur during the
Zernike Fit, especially in case of high orders.
To prevent this warning
·
Reduce the pupil diameter Pupil Definitions panel and/or
·
Increase the camera resolution ( Camera Settings )
Pupil is larger than selected camera area!
The pupil diameter exceeds the camera's active area so that parts of the pupil overlap the in-
active sensor area not used to detect spots and therefore not providing wavefront measure-
ment data.
To prevent this warning
·
Reduce the pupil diameter Pupil Definitions panel and/or
·
Increase the camera resolution ( Camera Settings ) in case the pupil diameter is close to
the image size.
Power too low!
The detected spot intensity is too low, resulting in an incorrect analysis of the centroid posi-
tions. Check 'Exposure Time' and 'Gain' settings (
Camera Settings ). Change the manual set-
ting or enable automatic control of these camera parameters.
If this error occurs even with the highest 'Exposure Time' and 'Gain' setting or if 'Auto Exposure'
is already enabled, the optical input power of the Wavefront Sensor is too low. Increase the
power of your light source or reduce attenuation in front of the Wavefront Sensor.
Power too high, sensor is saturated!
The detected spot intensity is too high, resulting in an incorrect analysis of the centroid posi-
tions. Check 'Exposure Time' and 'Gain' settings (
Camera Settings ). Change the manual set-
ting or enable automatic control of these camera parameters.
If this error occurs even with the lowest 'Exposure Time' and 'Gain' setting or if 'Auto Exposure'
is already enabled, the optical input power of the Wavefront Sensor is too high. Decrease the
power of your light source or insert an attenuator (e.g., neutral density filter) in front of the
Wavefront Sensor.
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