Lens driving device

Details Lens driving device Lens driving device

2007-02-16

2008-11-25

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

With support

C359S703000

Reexamination Certificate

active

07457060

ABSTRACT:
A lens driving device includes a lens barrel having a lens holder and an extension part extended from the lens holder. The device also includes a piezoelectric vibrator with a piezoelectric body flexed and bent in response to power application with a friction member in contact with the extension part, thereby providing driving power for transporting the lens barrel. The device further includes a preload member having a free end in resilient contact with a rear end of the piezoelectric body to compress the piezoelectric vibrator against the extension part and a guiding part for guiding the transport of the lens barrel in the optical axis direction. This allows a simplified and miniaturized structure, a large transport range with low input power to achieve excellent resolution of positioning, minimal loss of driving power, simplified mechanism for guiding the transport of the lens, and accurate and stable transport of the lens.

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Office Action issued in corresponding Korean Patent Application No. 10-2006-0016337, on Jul. 11, 2007.
UK Intellectual Property Office Examination Report, issued Jul. 1, 2008.
Chinese Office Action, issued Jul. 11, 2008.

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