Method and apparatus for a selective optical retroreflector

Details Method and apparatus for a selective optical retroreflector Method and apparatus for a selective optical retroreflector

1995-09-27

1996-07-23

Boudreau, Leo

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

342 45, 359169, H04B 1000

Patent

active

055395651

ABSTRACT:
An optical retroreflector apparatus and method detects (20) incident light radiation (12). A processor (30) periodically enables the detector (20, 60-64) to receive a signal included in the incident light radiation (12). A reflector (40) is triggered by receipt of a particular signal included in the incident light radiation to reflect a coded signal toward the source of the incident light radiation.

REFERENCES:
patent: 3911432 (1975-10-01), Williams
patent: 3989942 (1976-11-01), Waddoups
patent: 4134008 (1979-01-01), De Corlieu et al.
patent: 4361911 (1982-11-01), Buser et al.
patent: 4731879 (1988-03-01), Sepp et al.
patent: 5274379 (1993-12-01), Carbonneau et al.

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