THORLABS WFS20-14AR, Operation Manual

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Wavefront Sensor
·
The menu items, toolbar buttons, and setting values in the main panel are not reacting
to your clicks
Ø
If there is a Wavefront Sensor pop-up window open, e.g. a 'Wavefront Sensor Message',
the input will interact with this open pop-up window. Close any open pop-up windows to
return to the main panel.
·
Erroneous or no measurement data
Ø
Check that the correct Microlens Array (MLA) is selected in the Wavefront Setup . You
may have physically installed a different MLA than you selected within the WFS software.
7.3 Exchanging the Microlens Arrays
Up to three exchangeable microlens arrays (MLAs) (see WFS Products and Accessories )
are included with each Thorlabs Wavefront Sensor. The aperture of each MLA is customized
for either the WFS20, WFS30, or WFS40. See chapter
Parts List for details. Microlens ar-
rays are permanently mounted in individual patented precision magnetic holders. One is in-
stalled on the sensor head during operation.
The mounted MLA installed on the sensor head is easily exchanged using a Pickup Tool
(shown below). Thorlabs includes this Pickup Tool with the instrument when more than one
MLA is ordered for a Wavefront Sensor, or when a Wavefront Sensor is upgraded to include an
additional MLA.
Attention
Purchasing an additional MLA for an existing Wavefront Sensor requires returning the Wavefront Sensor to
Thorlabs!
The Wavefront Sensor must be calibrated by Thorlabs for use with the additional MLA.
The calibration data are saved to the sensor's internal memory.
MLA Exchange Instruction:
·
Screw the pickup tool into the MLA that is currently mounted to the WFS.
·
Pull out the MLA carefully from the aperture, avoid tilting!
·
Unscrew the pickup tool from the extracted MLA.
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Store the MLA away in a dust-proof box.
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Unpack the replacement MLA and screw in the pickup tool.
·
Prior to installing the replacement MLA, we recommend cleaning it using duster spray . Be
sure to keep a distance of at least 4 inches (10 cm) between the nozzle and the MLA to
avoid damaging it!
·
Insert the replacement MLA into the WFS aperture with the pickup hole up.
·
Setup the new MLA in the WFS software .
Note
The software cannot recognize the installed MLA. The MLA-Type must be selected in the soft-
ware by the user. Selecting the installed MLA is essential for correct wavefront measurements!
There are two ways to select the installed MLA in the software:
1. The MLA is exchanged during operation of the WFS: select the present MLA from the pull
down list in the Wavefront/MLA Tab :
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