Retro-reflection communication system

Details Retro-reflection communication system Retro-reflection communication system

1976-09-07

1977-12-20

Britton, Howard W.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

358209, H04N 718

Patent

active

040644340

ABSTRACT:
A communication system uses a laser beam directed along a path and a retrodirective reflector to return the beam along the same path. The front face of the retrodirective reflector is covered by a layer of an electro-optic material which, in response to an electric field produced by a vidicon, modifies the reflectivity of the reflector. The laser beam, when passing through the electro-optic material, is modulated by the output of the vidicon, and the modulated beam is returned along the given path to a suitable receiving means.

REFERENCES:
patent: 3493294 (1970-02-01), Fitzmaurice
patent: 3845238 (1974-10-01), Schneider
patent: 3943357 (1976-03-01), Culver

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