Semiconductor light position detector for rangefinder

Details Semiconductor light position detector for rangefinder Semiconductor light position detector for rangefinder

1986-06-19

1989-07-25

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

354403, 250214B, 250237R, G01C 300, H01J 4014

Patent

active

048506923

ABSTRACT:
A semiconductor light position detector for a rangefinder which projects a light beam onto an object and receives a reflected light beam from the object to measure a distance to the object. A portion of the light-receiving surface of the detector on which the reflected beam will not form a light spot is partially covered with a member that blocks unwanted light. Thus, the malfunctions caused by the flare component of the light from the light projector and the malfunctions due to increases in the shot noise under a high illuminance are reduced greatly.

REFERENCES:
patent: 4304487 (1981-12-01), Odone et al.
patent: 4375332 (1983-03-01), Yokota et al.
patent: 4436418 (1984-03-01), Morino
patent: 4441810 (1984-04-01), Momose et al.
patent: 4511248 (1985-04-01), Abbas
patent: 4579450 (1986-04-01), Nagaoka et al.
"Semiconductor Position Detector and its Application", Electronic Material, Japan, Feb. 1980, pp. 119-124.

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