Back-driven type autofocus camera

Details Back-driven type autofocus camera Back-driven type autofocus camera

1994-06-09

1996-07-23

Adams, Russell E.

3541951, G03B 1336

Patent

active

055394914

ABSTRACT:
The invention concerns a back-driven-type autofocus camera of a photographic lens-interchangeable type, which is capable of operating an autofocus function in any lens mounted on a lens mount directly or by means of an adapter ring. The back-driven-type autofocus camera includes a movable section having a film feeding and holding device, a range-finding element, and an optical system, and a fixed section having an outer case provided with a release button and a lens mount. The fixed section incorporates therein the movable section through a slider device so as to permit focusing-adjustment driving of the movable section in the direction of the optical axis of a photographic lens. The outer case with certain rigidity is arranged so as to separate the movable section from an external force.

REFERENCES:
patent: 4241987 (1980-12-01), Goldberg
patent: 5231443 (1993-07-01), Subbarao

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