Pyroelectric infrared radiation detector

Details Pyroelectric infrared radiation detector Pyroelectric infrared radiation detector

1996-09-05

1997-11-04

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

G01J 510

Patent

active

056843038

ABSTRACT:
A pyroelectric infrared radiation detector is capable of removing internal noise generated in a pyroelectric element as well as noise due to a power source in the manner that the induction noise of exterior high-frequency noise due to an inductance component in an outer lead wire is removed by connecting a second filter to a drain electrode of a FET, and the high-frequency interior noise is removed by installing a first filter between the pyroelectric element and FET. Therefore, a body sensing signal can be obtained by using only one pyroelectric element.

REFERENCES:
patent: 4626687 (1986-12-01), Nara et al.
patent: 4825079 (1989-04-01), Takamatsu et al.
patent: 4933559 (1990-06-01), Tamura et al.
patent: 4973843 (1990-11-01), Murata et al.

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