Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1996-09-13
1999-07-27
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
250DIG1, G01J 508, G08B 13193
Patent
active
059294450
ABSTRACT:
A passive infrared detection system is described which has a wide angular field of view and a flat or nearly flat front surface. Input optical elements direct and/or focus incident peripheral infrared radiation onto one or more internal Fresnel lens arrays and/or a sensitive area of a detector, including radiation having incident angles of less than about 30.degree.. Because of the absence of protruding elements improved performance and greater functionality can be obtained by employing larger or multiple infrared input windows and/or opto-electronic sections without degrading the aesthetic appearance of the unit.
REFERENCES:
patent: 3036219 (1962-05-01), Thompson
patent: 3524180 (1970-08-01), Cruse
patent: 3631434 (1971-12-01), Schwartz
patent: 3703718 (1972-11-01), Berman
patent: 3886360 (1975-05-01), Reiss et al.
patent: 3958118 (1976-05-01), Schwarz
patent: 4321594 (1982-03-01), Galvin et al.
patent: 4342987 (1982-08-01), Rossin
patent: 4404468 (1983-09-01), Kleinschmidt
patent: 4420688 (1983-12-01), Le Bars
patent: 4429223 (1984-01-01), Wagli
patent: 4429224 (1984-01-01), Wagli et al.
patent: 4442359 (1984-04-01), Lederer
patent: 4768020 (1988-08-01), Chen
patent: 4876445 (1989-10-01), McMaster
patent: 4912331 (1990-03-01), Owers
patent: 4978843 (1990-12-01), Yamakawa
patent: 5266807 (1993-11-01), Neiger
patent: 5491467 (1996-02-01), Tracy et al.
Electro-Optic Technologies, LLC
Hannaher Constantine
LandOfFree
Passive infrared detector does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Passive infrared detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Passive infrared detector will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-881344