Mirror operating mechanism in single lens reflex camera

Details Mirror operating mechanism in single lens reflex camera Mirror operating mechanism in single lens reflex camera

1979-02-26

1981-10-06

Gonzales, John

354 55, 354 56, G03B 1912

Patent

active

042932092

ABSTRACT:
A mirror operating mechanism in a single lens reflex camera having a first reflecting mirror which is provided to swing from the view finder observation position to the photographing retraction position. A second reflecting mirror introduces light passed through the first reflecting mirror at the finder observation position to a light measuring element. The second reflecting mirror is mounted swingably on the first reflecting mirror. The second reflecting mirror has a rotary shaft around which the second reflecting mirror can swing. Both ends of the rotary shaft are rotatably mounted on both sides of a frame supporting the first reflecting mirror. The end portion of an operating arm of the second reflecting mirror is brought into contact with a cam fixedly secured to a stationary member by means of a spring.

REFERENCES:
patent: 2952197 (1960-09-01), Goshima
patent: 3332331 (1967-07-01), Mandler
patent: 4110765 (1978-08-01), Miyata et al.

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