Mirror-driving mechanism for single-lens reflex cameras

Details Mirror-driving mechanism for single-lens reflex cameras Mirror-driving mechanism for single-lens reflex cameras

1986-12-22

1988-03-08

Mathews, A. A.

354479, G03B 1912, G03B 7099

Patent

active

047302003

ABSTRACT:
Disclosed is a mirror-driving mechanism for a single-lens reflex camera, comprising a first mirror holding frame pivotally mounted on a mirror box, a second mirror holding frame pivotally mounted on the first mirror holding frame, a second mirror urging spring for urging the second mirror holding frame in a direction away from the first mirror holding frame and for urging the second mirror holding frame in a direction bringing it resilient contact with the back of the first mirror holding frame, and a second mirror defining member in engagement with an actuating pin provided on the second mirror holding frame. The resilient member which forms the second mirror defining member comprises a wire spring or a flat spring.

REFERENCES:
patent: 4190339 (1980-02-01), Arai
patent: 4293209 (1981-10-01), Kurei
patent: 4320945 (1982-03-01), Kimura
patent: 4342508 (1982-08-01), Haraguchi
patent: 4492453 (1985-01-01), Hiramatsu
patent: 4498754 (1985-02-01), Ohno et al.
patent: 4508439 (1985-04-01), Ohara et al.

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