Compact camera module

Photography – Having variable focal length of camera objective – Power zoom

Reexamination Certificate

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Reexamination Certificate

active

07609956

ABSTRACT:
A compact camera module includes multiple hollow cylinders, a voice coil motor and a torsion spring. An intervening cylinder is mounted on a base. An upright rail is disposed on the intervening cylinder and perpendicular to a support plane of the base. An inner cylinder has a zoom lens inside and at least one moving component, wherein the inner cylinder is disposed in a hollow space of the intervening cylinder and the moving component slides within the upright rail. An outer cylinder is disposed around the intervening cylinder. The outer cylinder has a sloping rotational rail supporting the moving component. A wire coil is secured around the outer cylinder. A torsion spring encircles the outer cylinder and is secured to the base and the wire coil at two ends. A magnet-generating device is disposed around the wire coil and secured on the base.

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patent: 5499143 (1996-03-01), Sakamoto et al.
patent: 6594450 (2003-07-01), Kao
patent: 6978088 (2005-12-01), Nomura
patent: 7430368 (2008-09-01), Lee
patent: 63316029 (1988-12-01), None
patent: 2004-198684 (2004-07-01), None
patent: 1232310 (2005-05-01), None
patent: 1235872 (2005-07-01), None

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