Infra-red surveillance systems using multi-faceted mirror

Details Infra-red surveillance systems using multi-faceted mirror Infra-red surveillance systems using multi-faceted mirror

1978-12-22

1981-06-02

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250338, 350292, 350299, G01J 100, G02B 508

Patent

active

042713609

ABSTRACT:
An infra-red surveillance system comprising a multi-faceted mirror, the facets of which are inclined relative to one another, and a focussing system for focussing the energy reflected by the facets onto a common detector, the system being such that the area of surveillance is divided into monitored and unmonitored zones, only energy from an object disposed within a monitored zone being directed by a facet of the mirror and the focussing system onto the detector.

REFERENCES:
patent: 3886360 (1975-05-01), Reiss et al.
patent: 3923382 (1975-12-01), Harding
patent: 3972598 (1976-08-01), Kunz

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