VIS-IR Thermography Detector Product Guide
Xtralis
36218_A2
7
FOV and Theoretical Spot Size Calculation
The Spreadsheet
“36224 – Xtralis VIS-IR Theoretical Spot Size Ratio Calculator”
is a user-friendly tool to
determine lens, distance and minimum detection size at a given distance.
The sheet allows to calculate according to the 5x5 pixel rule (CNPP approved installations) or the 3x3 pixel
rule per the Manufacturer’s guidance.
Figure 4: Xtralis VIS-IR Theoretical Spot Size Ratio Calculator