Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1993-12-07
1995-10-03
Hellner, Mark
Optics: measuring and testing
Range or remote distance finding
With photodetection
G01C 308
Patent
active
054556694
ABSTRACT:
A laser radar has a pulsed laser (11) which controllably transmits light pulses (12) into a measurement region (13), a photoreceiver arrangement (22) which receives the light pulses (12') reflected back by an object (14) located in the measurement region (13), and an evaluation circuit which, taking account of the speed of light, determines a distance signal characteristic for the spacing of the object (14) from the time between the transmission and reception of a light pulse. Between the measurement region (13) and the pulsed laser (11) there is arranged a light deflecting device (15) which deflects the sequential light pulses at increasingly changing angles into the measurement region and simultaneously transmits to the evaluation circuit an angular position signal representative for its instantaneous angular position. The evaluation circuit derives the location of the object within the measurement region from the spacing signal and the angular position signal.
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patent: 4632543 (1986-12-01), Endo
patent: 4830489 (1989-05-01), Cain et al.
patent: 4950075 (1990-08-01), Ichinose et al.
patent: 4963018 (1990-10-01), West
patent: 5055683 (1991-10-01), McCracken
patent: 5202742 (1993-04-01), Frank et al.
patent: 5225882 (1993-07-01), Hosokawa et al.
patent: 5323223 (1994-06-01), Hayes
Erwin Sick GmbH - Optik-Elektronik
Hellner Mark
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