Distance measuring apparatus

Details Distance measuring apparatus Distance measuring apparatus

1983-05-12

1986-04-15

Buczinski, S. C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

354403, G01C 300, G01C 500, G03B 300

Patent

active

045824240

ABSTRACT:
A distance measuring apparatus provided with a plurality of light-emitting units and a plurality of light-receiving units. The light emission period of each of the light-emitting units is changed over at each predetermined period interval. A plurality of light-receiving elements constituting each light-receiving unit are constructed so as to receive the reflected light from a plurality of distance measurement fields of view on an object to be photographed in a plurality of distance measurement zones obtained by dividing a range to be measured into several blocks. The input signal from each of the light-receiving elements in each of the distance measurement zones is changed over in synchronism with the light emission period of the light-emitting units and the output signals for the respective distance measurement zones are compared, whereby a distance data indicative of the distance measurement zone most approximate to the object distance is put out.

REFERENCES:
patent: 3435744 (1969-04-01), Stimson
patent: 3443502 (1969-05-01), Harvey
patent: 3781111 (1973-12-01), Fletcher et al.
patent: 4251144 (1981-02-01), Matsuda et al.
patent: 4367934 (1983-01-01), Matsui
patent: 4371261 (1983-02-01), Tsji

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