Mirror operating mechanism in cassette type SLR camera

Details Mirror operating mechanism in cassette type SLR camera Mirror operating mechanism in cassette type SLR camera

1979-07-25

1981-03-31

Hix, L. T.

G03B 1912

Patent

active

042589959

ABSTRACT:
A mirror operating mechanism in a single-lens reflex camera using a small film cassette. The mirror operating mechanism has a main plate having two guide shafts in parallel with the optical axis of the photographing lens of the camera and provided in the space between the picture opening and the film winding chamber of the film cassette. A mirror lifting drive plate and a mirror lowering drive plate are slidable along the two guide shafts, respectively. Driving coil springs are provided in parallel with the two guide shafts for driving said mirror lifting drive plate and mirror lowering drive plate, respectively.

REFERENCES:
patent: 2916978 (1959-12-01), Harter et al.
patent: 3158075 (1964-11-01), Ohara
patent: 3829872 (1974-08-01), Ueda et al.
patent: 3906527 (1975-09-01), Erlichman

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