Passive infra-red detectors

Details Passive infra-red detectors Passive infra-red detectors

2007-07-31

2007-07-31

Porta, David (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

Reexamination Certificate

active

11425780

ABSTRACT:
A passive infra-red detector including at least three sub-detectors, each sub-detector being operative to receive infra-red radiation from a corresponding one of at least three sub fields-of-view, each sub field-of-view being exclusively defined by an optical element which does not define any other sub field of view, the sub fields-of-view being angled with respect to each other, adjacent ones of the sub fields-of-view being separated by a gap of no more than 30 degrees and at least one of the sub fields-of-view having at least one of the following characteristics: extending over no more then 45 degrees in azimuth; and including not more than three azimuthally distributed detection zones, and signal processing circuitry, operative to receive output signals from the sub detectors and to provide a motion detection output.

REFERENCES:
patent: 3524180 (1970-08-01), Cruse
patent: 3958118 (1976-05-01), Schwarz
patent: 4058726 (1977-11-01), Paschedag et al.
patent: 4081680 (1978-03-01), Keller et al.
patent: 4087688 (1978-05-01), Keller et al.
patent: 4271359 (1981-06-01), Herwig et al.
patent: 4375034 (1983-02-01), Guscott
patent: 4429224 (1984-01-01), Wagli et al.
patent: 4479056 (1984-10-01), Zierhut et al.
patent: 4604524 (1986-08-01), Kotlicki et al.
patent: 4614938 (1986-09-01), Weitman
patent: 4645930 (1987-02-01), Zierhut et al.
patent: 4704533 (1987-11-01), Rose et al.
patent: 4709152 (1987-11-01), Muller et al.
patent: 4746910 (1988-05-01), Pfister et al.
patent: 4751396 (1988-06-01), Daigle et al.
patent: 4772875 (1988-09-01), Maddox et al.
patent: 4787722 (1988-11-01), Claytor
patent: 4912748 (1990-03-01), Horii et al.
patent: 4943800 (1990-07-01), Ikeda et al.
patent: 5296707 (1994-03-01), Nozu et al.
patent: 5559496 (1996-09-01), Dubats
patent: 5570079 (1996-10-01), Dockery
patent: 5572033 (1996-11-01), Grant et al.
patent: RE35534 (1997-06-01), Claytor
patent: 5693943 (1997-12-01), Tchernihovski et al.
patent: 5703368 (1997-12-01), Tomooka et al.
patent: 5844240 (1998-12-01), Lee et al.
patent: 6031456 (2000-02-01), Hanyuda et al.
patent: 6078253 (2000-06-01), Fowler
patent: 6150658 (2000-11-01), Hagiwara et al.
patent: 6163025 (2000-12-01), Pantus et al.
patent: 6211522 (2001-04-01), Kotlicki et al.
patent: 6222191 (2001-04-01), Myron et al.
patent: 6239437 (2001-05-01), Barone
patent: 6415205 (2002-07-01), Myron et al.
patent: 6653635 (2003-11-01), Liao et al.
patent: 6690018 (2004-02-01), Barone
patent: 6818881 (2004-11-01), Chernichovski et al.
patent: 7053374 (2006-05-01), Barone
patent: 7115871 (2006-10-01), Tracy et al.
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