Lens drive and projector comprising lens drive

Details Lens drive and projector comprising lens drive Lens drive and projector comprising lens drive

2006-01-24

2008-09-02

Mack, Ricky L (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S700000

Reexamination Certificate

active

07420747

ABSTRACT:
This lens drive is a lens drive for moving a lens arranged in a housing, and comprises a rotating knob located out of the optical axis of the lens with a rotation axis unparallel to the optical axis of the lens and arranged outside the housing, a knob-side cam pin provided on the rotating knob, a lens-side cam pin provided to integrally move with the lens and a cam plate arranged in the housing and formed with a knob-side cam groove receiving the knob-side cam pin and a lens-side cam groove receiving the lens-side cam pin. The rotating knob is so rotated as to move the cam plate for moving the lens along the optical axis of the lens following this movement of the cam plate.

REFERENCES:
patent: 51-30460 (1976-09-01), None
patent: 55-067716 (1980-05-01), None
patent: 02-281244 (1990-11-01), None
patent: 2000-241875 (2000-09-01), None
patent: WO 02/16994 (2002-02-01), None
Japanese Office Action dated Dec. 4, 2006 with English translation (Eleven (11) pages).

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