Focusing device for digital camera module

Details Focusing device for digital camera module Focusing device for digital camera module

2007-12-10

2009-08-11

Mack, Ricky L (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S704000, C359S823000

Reexamination Certificate

active

07573652

ABSTRACT:
A focusing device (100) includes a lens mount (10), a driving mechanism (30), a hollow first barrel (50) and a first lens element (60) received in the first barrel. The lens mount includes a hollow sleeve (13) which includes a wall, a first internal thread on an inside of the wall and a cutout (134) defined through the wall. The hollow first barrel includes a wall, and a first outer thread (571) and an annular gear (55) on an outside of the wall. The first barrel is movably secured in the lens mount by means of the first outer thread engaging with the first internal thread, the driving mechanism protrudes through the cutout of the lens mount to drive the annular gear to rotate in the lens mount so that the first barrel ascends or descends relative to the lens mount.

REFERENCES:
patent: 5805353 (1998-09-01), Ichino et al.
patent: 6023376 (2000-02-01), Nomura et al.
patent: 2005/0104995 (2005-05-01), Spryshak et al.

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