1989-09-29
1990-07-10
Hix, L. T.
354479, 354152, G03B 300
Patent
active
049410105
ABSTRACT:
A single-lens reflex camera having an automatic focusing capability, comprising a half-reflection mirror arranged in fixed relation to split part of light entering through the photographic lens to the finder optical system, a flippable submirror of total reflection arranged behind the mirror upon erection to direct part of the passed light to means for detecting the image sharpness, and control means responsive to termination of an operation of the detecting means for adjusting the size of opening of the diaphragm aperture and, at the same time, moving the submirror out of the path of the light from the mirror to the film gate, regardless of whether or not a shutter release is actuated.
REFERENCES:
patent: 4492453 (1985-01-01), Hiramatsu
patent: 4692010 (1987-09-01), Kataoka et al.
Aihara Yoshihiko
Suzuki Masayuki
Canon Kabushiki Kaisha
Gray David M.
Hix L. T,.
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