Technical Background

The frequency response of thin film and silicon-based thermopiles are shown for sinusoidally modulate radiation.

The calculation of a detector signal in a reflective optical system is shown.

Calculation of the blackbody radiance for three spectral regions of commonly used filters is given.

The normalized angular response for a thermopile detector is shown.

As a function of frequency: The frequency response of thin film and silicon-based thermopiles are shown for sinusoidally modulate radiation.

The methods for measuring the time constant of a thermopile are discussed.