Guide device for zoom lens barrel

Details Guide device for zoom lens barrel Guide device for zoom lens barrel

1994-12-01

1996-12-03

Epps, Georgia Y.

Optical: systems and elements

Lens

With variable magnification

359704, 359822, G02B 1514

Patent

active

055814115

ABSTRACT:
A guide device for a zoom lens barrel which includes a movable cylinder linearly guided in a direction of the optical axis of a zoom lens, a pinion rotatably supported on the movable cylinder, with a part of the pinion projecting from an outer surface of the movable cylinder. The guide device further includes a driving mechanism for rotating the pinion, a zooming mechanism for moving a plurality of lens groups of the zoom lens by rotation of the pinion to change a focal length, and a straight guide projection formed on an outer surface of the movable cylinder. The pinion is situated close to the straight guide projection.

REFERENCES:
patent: 4560237 (1985-12-01), Ohkura et al.
patent: 4944030 (1990-07-01), Haraguchi et al.
patent: 4974949 (1990-12-01), Tanaka
patent: 5144493 (1992-09-01), Nomura
patent: 5196963 (1993-03-01), Sato et al.
patent: 5245476 (1993-09-01), Shona

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