Mirror driving device for a single lens reflex camera

Details Mirror driving device for a single lens reflex camera Mirror driving device for a single lens reflex camera

Filed on

1975-12-15

Date issued

1978-05-23

Examiner

O'Connor, Edna M.

Other Related Categories

354156, G03B 1912

Type

Patent

Status

active

Patent number

040913996

Description

ABSTRACT:
The invention presents a mirror driving device for a single lens reflex camera. The energy during the ascension of the mirror is absorbed to utilize it as the energy for the descent of the mirror, and then this energy is substantially absorbed to utilize it as the energy for the ascending operation at the phototaking step during the lowering operation of the mirror. The energy loss due to the friction is supplemented from an external source for efficiently processing the ascending and descending operations.

REFERENCES:
patent: 2952197 (1960-09-01), Goshima
patent: 3653311 (1972-04-01), Sato
patent: 3738246 (1973-06-01), Sato
patent: 3894294 (1975-07-01), Blinow

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