Thick film sensor and infrared detector

Details Thick film sensor and infrared detector Thick film sensor and infrared detector

1975-05-09

1977-01-04

Dixon, Harold A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250338, 338 22SD, G01J 100

Patent

active

040015866

ABSTRACT:
A thermistor material is deposited and fired on a substrate, and an interdigitated pair of electrodes is deposited and fired thereover. The device is removed from the substrate and a third electrode of low thermal mass is applied on the side opposite the electrode pair. The three electrodes may be connected in a bridge circuit to form a novel, AC-generating infrared detector. When encapsulated in a header-type enclosure including a slit parallel to the electrode pair the sensor functions as an intrusion detector for moving objects. The thermistor material is preferably cobalt oxide.

REFERENCES:
patent: 2075094 (1937-03-01), Chubb
patent: 2765385 (1956-10-01), Thomsen
patent: 2935711 (1960-05-01), Christensen
patent: 2999177 (1961-09-01), Null et al.
patent: 3745360 (1973-07-01), Paul
patent: 3862422 (1975-01-01), Phillip
patent: 3896311 (1975-07-01), Taylor et al.

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