Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1989-09-22
1992-04-21
Berman, Jack I.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
2503383, 340567, G01J 508
Patent
active
051071207
ABSTRACT:
A passive infrared detector, including a pyroelectric sensor with three pairs of contiguous, active elements and a Fresnel lens with a plurality of segments each of which has an optical center and an equivalent focal length, each pair of active elements disposed in different plane, with each optical center juxtaposed to the plane of at least one of those active elements, substantially at the focal length.
REFERENCES:
patent: 3839640 (1974-10-01), Rossin
patent: 3896311 (1975-07-01), Taylor et al.
patent: 3999069 (1976-12-01), Taylor et al.
patent: 4052616 (1977-10-01), Keller
patent: 4081680 (1978-03-01), Keller
patent: 4225786 (1980-09-01), Perlman
patent: 4321594 (1982-03-01), Galvin et al.
patent: 4322124 (1982-03-01), Pudgitt et al.
patent: 4375034 (1983-02-01), Guscott
patent: 4379971 (1983-04-01), Smith et al.
patent: 4523095 (1985-06-01), Keller-Steinbach
patent: 4617463 (1986-10-01), Muirhead
patent: 4644147 (1987-02-01), Zublin
patent: 4769545 (1988-09-01), Fraden
patent: 4873469 (1989-10-01), Young et al.
patent: 4896039 (1990-01-01), Fraden
patent: 4930864 (1990-06-01), Kuster et al.
Fraden, "Passive Infrared Motion Detection", Sensors (Nov. 1988), pp. 40-42.
One-page technical information sheet entitled "FIRM-287 Motion Detection Module", American IRIS Corp.
Berman Jack I.
Hanig Richard
Pennwalt Corporation
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