Mirror operating mechanism for single-lens reflex camera

Details Mirror operating mechanism for single-lens reflex camera Mirror operating mechanism for single-lens reflex camera

1980-07-07

1982-01-19

Hix, L. T.

354 55, G03B 1912

Patent

active

043113761

ABSTRACT:
A mirror operating mechanism for use with a single-lens reflex camera including a first mirror holding frame supporting a half-silvered mirror, a second mirror holding frame supporting a totally reflecting mirror and a second mirror operating lever. The first mirror holding frame is pivotally coupled to a mirror box housing through a first shaft while the second mirror holding frame is pivotally coupled to the first mirror holding frame by a second shaft. Further, the second mirror operating mirror is pivotally coupled to the first mirror holding frame by a third shaft and a fourth shaft coupled to the second mirror holding frame is slidably disposed in elongated grooves formed therein. One end of the second mirror operating lever confronts a rotation angle control plate during operation of the mechanism to control the raising of the second mirror holding frame and operating lever.

REFERENCES:
patent: 3332331 (1967-07-01), Mandler
patent: 3401614 (1968-09-01), Gunther
patent: 3601027 (1971-08-01), Ono

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