Distance measuring apparatus

Details Distance measuring apparatus Distance measuring apparatus

1982-01-04

1985-04-30

Buczinski, S. C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

354403, 356152, G01C 310, G01B 1126

Patent

active

045140839

ABSTRACT:
A distance measuring apparatus projects a light beam toward an object whose distance is to be determined. Reflected light from the object is divided into a pair of light components by a beam splitter. The intensity of one of the light components is detected by first light intensity detector. The other light component is subject to an alteration in intensity in accordance with an angle formed between the illuminating light and the reflected light, and the intensity of the said other light component is detected by second light intensity detector. The outputs from both detector is fed to a circuit, which derives information indicative of a distance to the object being determined.

REFERENCES:
patent: 3320424 (1967-05-01), Olson et al.
patent: 3458704 (1969-07-01), Cath
patent: 3601613 (1971-08-01), Hock
patent: 4313654 (1982-02-01), Matsui et al.

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