Lens moving mechanism

Details Lens moving mechanism Lens moving mechanism

2006-10-24

2006-10-24

Dang, Hung Xuen (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S823000

Reexamination Certificate

active

07126763

ABSTRACT:
A lens moving mechanism includes a lens frame holding a lens; a guide shaft for slidably supporting the lens frame, the guide shaft extending parallel with the optical axis, a lead screw extending parallel to the guide shaft for moving the lens frame linearly via rotation of the lead screw; a pair of bearing arms provided on the lens frame spaced from one another in a direction parallel with the guide shaft; and a screw-engagement follower located between the bearing arms and provided separately from the lens frame, the screw-engagement follower provided with a screw-engagement portion engaging with the lead screw. The guide shaft is inserted in the bearing arms and the screw-engagement follower. The screw-engagement follower is integrally provided with an elastically deformable leg which abuts against an inner surface of a bearing arm to absorb play between the screw-engagement follower and the bearing arms.

REFERENCES:
patent: 6570717 (2003-05-01), Tu et al.
patent: 6714357 (2004-03-01), Yamazaki
patent: 6813441 (2004-11-01), Yamazaki
patent: 5-27149 (1993-02-01), None
patent: 5-341168 (1993-12-01), None
patent: 11-72688 (1999-03-01), None

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