Driving mechanism for a photographic lens

Details Driving mechanism for a photographic lens Driving mechanism for a photographic lens

1997-08-26

1999-01-19

Epps, Georgia

Optical: systems and elements

Lens

With variable magnification

359699, 359700, G02B 1514

Patent

active

058619984

ABSTRACT:
A zoom lens driving mechanism is disclosed that is adapted to rotate a first driving lens barrel and a second driving lens barrel relative to each other and thereby to move a movable lens barrel back and forth in parallel to an optical axis. More specifically, a linearly movable member that is provided to guide a linear movement of the movable lens barrel relative to the second driving lens barrel, is moved back and forth under a guidance by a leading groove formed in the first driving lens barrel. With such a unique arrangement, no part is required to support the linearly movable member, and therefore, any apprehension about the strength of a part as well as a flare phenomenon can be avoided.

REFERENCES:
patent: 5276552 (1994-01-01), Kohmoto et al.
patent: 5287137 (1994-02-01), Hara et al.
patent: 5343331 (1994-08-01), Kohmoto et al.
patent: 5535057 (1996-07-01), Nomura et al.
patent: 5583595 (1996-12-01), Hara et al.
patent: 5659810 (1997-08-01), Nomura et al.
patent: 5758205 (1998-05-01), Hara et al.
patent: 5812325 (1998-09-01), Nomura et al.

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