Definition of pyroelectric infrared detector

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Photonics Dictionary

pyroelectric infrared detector

Unlike the thermocouple or bolometer, the pyroelectric infrared detector is a current source with an output proportional to the rate of change of its temperature. Capable of extremely rapid response and an insensitivity to DC effects, it is widely used in radiometric systems from industrial temperature measuring systems to environmental satellite instruments and in the analysis of infrared lasers.

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