Broad band pyroelectric infrared detector

Details Broad band pyroelectric infrared detector Broad band pyroelectric infrared detector

1982-11-18

1985-02-26

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

G01J 524

Patent

active

045019673

ABSTRACT:
An infrared thermal detector includes an infrared thermal sensing element, a load resistor, and a voltage supply means. The infrared thermal sensing element is a pyroelectric material whose electrical conductivity changes with temperature. The circuit and device parameters are chosen such that the detector will have frequency response over a broad band from dc (0 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.

REFERENCES:
patent: 3748624 (1973-07-01), Yazuma et al.
patent: 3813550 (1974-05-01), Abrams et al.
patent: 4024560 (1977-05-01), Miller et al.
patent: 4044251 (1977-08-01), Taylor et al.
A. S. Martynyuk, E. P. Nikolaev and V. K. Novik, "A method of reducing the non-linearity of pyroelectric radiation detectors" Sov. J. Opt. Technol. vol. 42, No. 1, (Jan. 1975), pp. 35-37.
V. P. Singh and A. Van Der Ziel "Capacitive Bolometer Effect in the Paraelectric Phase of Triglycine Sulfate" Ferroelectrics vol. 15, Nos. 3-4 (1977) pp. 135-142.

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