Range measuring device for camera

Details Range measuring device for camera Range measuring device for camera

1988-06-10

1990-03-13

Adams, Russell E.

354432, 354403, G03B 300

Patent

active

049086464

ABSTRACT:
Range measuring device for a camera measures the distances to objects respectively present in a central area of the photographing field and in plural areas including those surrounding the central area, then produces an outdoor signal indicating that the photographing is conducted outdoors or an indoor signal indicating that the photographing is conducted indoors, discriminates whether the object in the central area is the main object to be focused from the measured distance of the central area, and, if the distance in the central area is included in a reference distance range, determines the photographing distance based at least on the measured distance of the central area. The reference distance range is selected to be larger when the outdoor signal is produced than the case when the indoor signal is produced.

REFERENCES:
patent: 4591257 (1986-05-01), Sawano
patent: 4740806 (1988-04-01), Takehana

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