THORLABS BC207UV, Руководство по эксплуатации

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BC207 Series
Chapter 9: Application Note
Rev: 8.1, 10-Jan-2022
Page 156
© 2022 Thorlabs
is the dial distance of peak position's pixel from the reference position (= sensor center).
Centroid Position
X, Y and R position (first moment), calculated over all pixels with respect to the above reference
position.
X= SUM [x * p(x,y)] / I Y= SUM [y * p(x,y)] / I
where:
p(x,y) intensity at location (x,y);
I total intensity;
SUM of pixels taken over the entire area
AD Saturation
Saturation level of the instrument's AD converter. For a good SNR (signal-to-noise ratio) the
saturation level should be not below 40% and not be above 95%.
Total Power
Total power within the Calculation Area .
Peak Density
Power on peak pixel divided by its area (in µm²)
9.4 Ellipse (Fitted)
The beam shape is fit to an ellipse using the set clip level.
Diameter (clip level) is given for the minor axis ( min ), major axis ( max ) and their arithmetic
mean value.
Ellipticity and Eccentricity of the beam are defined in ISO 11146-1 as
40