Distance measuring device for camera

Details Distance measuring device for camera Distance measuring device for camera

1987-09-23

1988-05-31

Perkey, M. B.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 1, 250201, 250552, 250578, G03B 300, G01C 308

Patent

active

047484691

ABSTRACT:
The disclosed distance measuring device for a camera capable of measuring the distances of a plurality of objects within a target area comprises center-weighting means for treating the distance information of the object whose image lies near or at the center of the area of the picture frame with a heavier emphasis than those of the other objects, whereby an optimum focusing adjustment is allowed to be formed automatically.

REFERENCES:
patent: 3629589 (1971-12-01), Gleixner
patent: 4346988 (1982-08-01), Kimuro et al.
patent: 4371261 (1983-02-01), Tsuji
patent: 4470681 (1984-09-01), Johnson
patent: 4575211 (1986-03-01), Matsumura et al.

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