Apparatus for adjusting position of lens in camera

Details Apparatus for adjusting position of lens in camera Apparatus for adjusting position of lens in camera

1995-04-13

1997-03-18

Mathews, A. A.

Photography

With exposure objective focusing means, focusing aid, or...

Mechanical mechanism for displacement of exposure objective

396529, 359699, 359700, 359823, G03B 1332, G02B 704

Patent

active

056131682

ABSTRACT:
A position adjusting apparatus for adjusting a position of a lens frame of a camera, which holds a focusing lens group, in an optical axis direction. This apparatus includes a lens frame supporting member which is rotatable relative to the lens frame, a guide which moves the lens frame in the optical axis direction during the rotational adjustment of the lens frame, and a friction mechanism which normally prevents the lens frame and the lens frame supporting member from rotating relative to each other due to a frictional force, and which permits the lens frame and the lens frame supporting member to rotate relative to each other against the frictional force when a predetermined adjusting force is applied thereto.

REFERENCES:
patent: 4764783 (1988-08-01), Tanaka
patent: 4910544 (1990-03-01), Nomura
patent: 5144494 (1992-09-01), Sekiguchi
patent: 5307104 (1994-04-01), Hamasaki

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