Infrared thermal detector

Details Infrared thermal detector Infrared thermal detector

G - Physics

01

J

340/155.2

G01J 5/02 (2006.01) G01J 5/34 (2006.01) H01L 37/02 (2006.01)

Patent

CA 1225720

PHA 21 129 21 5-7-1983 ABSTRACT: "Infrared thermal detector." An infrared thermal detector includes an infra- red thermal sensing element, a load resistor, and a vol- tage suPply means. The infrared thermal sensing element is a pyroelectric material whose electrical conductivity changes with temperature. The circuit and device para- meters are chosen such that the detector will have a flat frequency response over a broad band from dc (O Hertz) to a high frequency determined by the electronic time constant of the circuit. The detector thus has all the advantages of either a pyroelectric detector without a chopper, or a thermistor bolometer having a fast response time.

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