Optical sight system for the detection and recording of infringe

Details Optical sight system for the detection and recording of infringe Optical sight system for the detection and recording of infringe

1988-08-11

1990-02-20

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250221, 324175, 340936, 340937, G01V 904, G06M 700, G08G 101

Patent

active

049028898

ABSTRACT:
Three sights are formed by a laser emitter system (10) and receiver system (5). The systems are disposed so as to be coaxial, the receiver system includes a photodiode receiver (5) which is associated with means for the amplification and electronic processing (7) of a signal, the signal consisting of sudden variations of the reflection of the emitter beam. A circuit arrangement (20) is provided for supplying the laser emitters for the emission of laser signals of a duration which is relatively short in comparison with the interval between two successive emissions.

REFERENCES:
patent: 2402464 (1946-06-01), Suter
patent: 2927836 (1960-03-01), Shore
patent: 3079553 (1963-02-01), Brown, Jr. et al.
patent: 3222682 (1965-12-01), Scott
patent: 4173010 (1979-10-01), Hoffmann
patent: 4214265 (1980-07-01), Olesen
patent: 4247768 (1981-01-01), Elmer et al.
patent: 4272189 (1981-06-01), Bailey et al.
patent: 4433325 (1984-02-01), Tanaka et al.
patent: 4752764 (1988-06-01), Peterson et al.

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