Uncooled reflective shield for cryogenically-cooled radiation de

Details Uncooled reflective shield for cryogenically-cooled radiation de Uncooled reflective shield for cryogenically-cooled radiation de

1986-06-19

1989-04-11

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250353, 350276SL, G01J 508, G01J 506

Patent

active

048209236

ABSTRACT:
A warmshield reflector for a cryogenically cooled radiation detector has a reflective surface of toroidal shape. The surface has geometric properties which cause a ray emanating from the detector to be reflected such that a ray is imaged as a defocused ring outside of and surrounding the active detector area. Several such segments are located in front of a small, cryogenically cooled detector shield, to provide an overall detector shielding effect similar to that of a larger, cryogenically cooled shield.

REFERENCES:
patent: 2738700 (1956-03-01), Taylor
patent: 3445659 (1969-05-01), Guimento et al.
patent: 4217026 (1980-08-01), Radovich
patent: 4339748 (1982-07-01), Guscott et al.
patent: 4431917 (1984-02-01), Gibbons
patent: 4507551 (1985-03-01), Howard et al.
patent: 4542963 (1985-09-01), Linlor

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