Voice coil type lens drive assembly

Details Voice coil type lens drive assembly Voice coil type lens drive assembly

2008-04-16

2010-02-16

Stultz, Jessica T (Department: 2873)

Optical: systems and elements

Lens

With support

C359S822000, C359S823000, C359S824000

Reexamination Certificate

active

07663818

ABSTRACT:
By maintaining a relative position of coils of a movable unit with respect to fixed magnets in a normal state to stabilize a relative position of the movable unit with respect to the whole of a lens drive assembly, the lens drive assembly is provided as an assembly capable of adjusting the focus of a lens in a satisfactory manner. In a voice coil type lens drive assembly for adjusting the focus of a lens, a spring6, a yoke6with magnets5and a movable unit M1attached thereto, and electrically conductive springs2, are accommodated in this order on a base1and a connecting portion of a cover frame8and that of the base1are connected together to unite the two components. At the same time, cut-in portions6dformed in end portions of the yoke6, which is a metallic yoke, are fitted on projections1eof the base1and both are joined together with connections to the cover frame8as guide.

REFERENCES:
patent: 4669823 (1987-06-01), Iguma et al.
patent: 7285879 (2007-10-01), Osaka
patent: 2007/0212060 (2007-09-01), Huang et al.
patent: 3-127325 (1991-12-01), None

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