Selection tool

IFOV & Spot Size Calculator

Estimate how much detail a thermal detector can resolve at a given distance. Use the result for preliminary selection, not as a measurement guarantee.

Distance to target (m)

Horizontal field of view (degrees)

Horizontal detector pixels

Estimated result

A common preliminary rule uses at least three pixels across the target. Measurement accuracy also depends on focus, emissivity, atmospheric conditions and manufacturer guidance.

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Send the application, inspection distance, target equipment, required documentation and delivery country. We will compare suitable selected industrial inspection equipment options.

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