Optical arrangement for a passive infrared motion detector

Details Optical arrangement for a passive infrared motion detector Optical arrangement for a passive infrared motion detector

1980-04-07

1981-06-02

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250342, G01J 100

Patent

active

042713595

ABSTRACT:
An optical arrangement for use with an infrared detector characterized by a concave mirror surrounding the infrared detector, a body having a plane reflecting surface extending perpendicular to the axis of the detector, which surface faces the detector and the conical concave mirror, and having a conical reflecting surface extending from the plane surface, and at least one planar directional mirror pivotably mounted for reflecting infrared radiation at the conical reflecting surface. The arrangement can be used to monitor a space and if used with a second arrangement, whose directional mirrors are arranged to provide new sensing curtains adjacent the curtains of the first detector, the arrangement can determine the direction of movement of the object passing through the space.

REFERENCES:
patent: 3381569 (1968-05-01), Hatcher
patent: 3524180 (1970-08-01), Cruse
patent: 3703718 (1972-11-01), Berman
patent: 3745347 (1973-07-01), de Brey et al.
patent: 3927254 (1975-12-01), Lessman
patent: 4070573 (1978-01-01), Allen et al.

Affiliated with

Also associated with

Rating

Optical arrangement for a passive infrared motion 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 Optical arrangement for a passive infrared motion detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical arrangement for a passive infrared motion detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1866914