Infrared objective

Details Infrared objective Infrared objective

1996-06-05

2000-05-02

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

G01J 506

Patent

active

060575506

ABSTRACT:
An infrared radiation detector device has a cooled detector element (3) within a first optical device (internal cold shield (1.sub.i)). The first optical device includes a first diaphragm (6.sub.i) in front of said detector element. The infrared radiation detector device has a second optical device (external cold shield (1.sub.a)) which is thermally separated from the first optical device. The second optical device includes a second diaphragm (6.sub.a). The aperture (7.sub.a) of the diaphragm forms the pupil of the infrared optic which produces an infrared image on the surface of said detector element (3).

REFERENCES:
patent: 4775792 (1988-10-01), Prost
patent: 4783593 (1988-11-01), Noble
patent: 4820923 (1989-04-01), Wellman

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