Modulated retroreflector system

Details Modulated retroreflector system Modulated retroreflector system

1988-08-10

1991-01-08

Miller, Stanley D.

350331R, 350338, G02F 113

Patent

active

049830210

ABSTRACT:
A reflector system including a reflector for reflecting incident electromagnetic energy, a shutter for controlling at least one of electromagnetic energy incident on and electromagnetic energy reflected by the retroreflector, a controller for controlling the shutter to control such incident or reflected electromagnetic energy, and a coding or modulating device for causing the controller to modulate such energy according to a prescribed code. The reflector system may be used in a closed communications system and/or in a system for seeking, locating and/or identifying an object.

REFERENCES:
patent: 4131791 (1978-12-01), Lego, Jr.
patent: 4435047 (1984-03-01), Fergason
patent: 4436376 (1984-03-01), Fergason

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