Pyroelectric infrared ray sensor

Details Pyroelectric infrared ray sensor Pyroelectric infrared ray sensor

1995-09-29

1997-03-25

Glick, Edward J.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

G01J 502

Patent

active

056147171

ABSTRACT:
A pyroelectric infrared ray sensor is disclosed. The pyroelectric sensor includes first and second reflecting electrodes formed on a face of the pyroelectric material. Further, first and second optical receiving electrodes are formed on an opposite face of the pyroelectric material correspondingly with the reflecting electrodes. Further, an impedance matching circuit is formed for extracting signals from the first and second reflecting electrodes, and the impedance matching circuit includes an input resistor. The input resistor of the impedance matching circuit includes first and second resistance electrodes extending from the first and second reflecting electrodes to be approachingly overlapped. A pyroelectric material resistance area consists of a sharing area in an overlapping portion of the first and second resistance electrodes.

REFERENCES:
patent: 4933559 (1990-06-01), Tamura et al.
patent: 5008541 (1991-04-01), Audaire et al.
patent: 5045702 (1991-09-01), Mulleer

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