Modulation device

Details Modulation device Modulation device

1988-03-07

1989-07-18

Howell, Janice A.

Radiant energy

Infrared-to-visible imaging

Including detector array

250330, 250342, 250350, 250351, G01J 562

Patent

active

048496340

ABSTRACT:
The disclosure is directed to a modulation device for a radiation detector device picking up an image field. The modulation device comprises a modulation disk disposed in the image field plane and having radial slits, said modulation disk executing a nutation about the axis of the image field. The modulation device further includes an optical system, a radiation-sensitive receiver arrangement and a signal processor. The radiation-sensitive receiver arrangement (11) comprises a grouping of radiation reception elements (E11 to Emm) forming a radiation receiver field (13), which elements are coupled with a window circuit (18, 22, 32) and are selectively addressable by the window circuit for the formation of at least one window zone within the radiation receiver field (13). The addressing occurs such that only signals of this at least one window zone are transmitted into the signal processor.

REFERENCES:
patent: 3444380 (1969-05-01), Webb
patent: 3853405 (1974-12-01), Adler et al.

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