THORLABS WFS20-14AR, Руководство по эксплуатации

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Wavefront Sensor
area, the AOI limits measurements to the selected rectangular area. The boundary of this re-
gion is indicated by a yellow rectangle in the Spot Field panel.
This feature was customer inspired.
This is helpful particularly when rectangular objects are measured using the WFS. For instance,
when components of a HD display are measured with respect to wavefront deformations, the
results should only reflect the properties of the active display area, but not of the surrounding
frames and holders. This way, measurement errors due to uncertainties in detecting spot
centroids at the border of the target area can be prevented.
Setting up the AOI
Set the AOI in the ‘Pupil Definition’ tab.
When the ‘Full Size’ option is enabled (default), the AOI is equal to the actual camera image
size that is selected. In this case the yellow rectangle is not displayed in the Spot Field
panel.
To set smaller AOI dimensions, enter the size and center coordinates of the desired AOI and
uncheck the ‘Full Size’ button.
How the AOI works
Limiting the AOI is related to the reference centroid positions; in other words, a detected spot is
masked if its appropriate reference position is outside the AOI.
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