1981-01-02
1982-06-29
Hix, L. T.
354230, 354266, G03B 1318, G03B 908
Patent
active
043369880
ABSTRACT:
A camera having an automatic lens focusing system is provided with a torsion spring drive arrangement for rotatably driving a disc having a plurality of different focal length lens elements thereon in circumferentially spaced apart relation to sequentially present each of the lens elements at a focusing position. A combined shutter blade latch and lens disc actuator member is movable between latching and unlatching positions and additionally serves to releasably hold an acceleration arm of the torsion spring at an initial cocked position, to release the acceleration arm to effect disc rotation in response to movement of the member from the latching to the unlatching position, and thereafter to recock the acceleration arm when the member is moved back to the latching position.
REFERENCES:
patent: 4167316 (1979-09-01), Johnson et al.
patent: 4199246 (1980-04-01), Muggli
Hix L. T,.
Perkey William B.
Polaroid Corporation
Vale John S.
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