Infrared intrusion detector with beam indicators

Details Infrared intrusion detector with beam indicators Infrared intrusion detector with beam indicators

1982-05-17

1984-11-20

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250353, G01J 504, G01J 508

Patent

active

044840756

ABSTRACT:
A passive infrared intrustion detector is provided with a lens which has a plurality of first lens segments, each for focusing infrared radiation from various beams of sensitivity onto an infrared detecting element. Associated with each of the first lens segments is a second lens segment, with a displaced lens center, which serves to focus light originating within the detector device into a radiated beam, which corresponds in space to the region of sensitivity of the infrared beams.

REFERENCES:
patent: 4275303 (1981-06-01), Mudge
patent: 4321594 (1982-03-01), Galvin et al.

Affiliated with

Also associated with

Rating

Infrared intrusion detector with beam indicators does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Infrared intrusion detector with beam indicators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared intrusion detector with beam indicators will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2190755