Infrared radiation detecting systems

Details Infrared radiation detecting systems Infrared radiation detecting systems

1981-04-21

1983-05-10

Smith, Alfred E.

Radiant energy

Infrared-to-visible imaging

250352, 250353, 356397, H01J 3149, G01J 100, G01B 1100

Patent

active

043831737

ABSTRACT:
An infrared radiation detecting system comprises a detector element 13A forming part of a detector 13 incorporating a cold shield 14 and an optical system 12, 15, for imaging infrared radiation from a field of view O onto a real image surface 19 spaced from the detector element 13A and relaying the image I from the surface 19 to the detector element 13A is provided with a graticule 20 having markings which are reflective to infrared radiation emitted by the detector 13. Graticule 20 is located at the image surface 19 so that the graticule markings are imaged onto the detector element 13A in superimposition with the infrared radiation from the field of view O.

REFERENCES:
patent: 2431666 (1947-11-01), Fassin
patent: 2911879 (1959-11-01), Giwosky
patent: 4018533 (1977-04-01), Haines
patent: 4150824 (1979-04-01), Villa
patent: 4205229 (1980-05-01), Beer
patent: 4315150 (1982-02-01), Darringer et al.

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