Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
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.
Scavarda John S.
Waddoups Ray O.
Bacares Rafael
Bogacz Frank J.
Boudreau Leo
Motorola Inc.
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