Optical focusing device

Details Optical focusing device Optical focusing device

2007-05-18

2008-11-04

Hasan, Mohammed (Department: 2873)

Optical: systems and elements

Lens

With support

C359S823000

Reexamination Certificate

active

07446965

ABSTRACT:
This invention discloses an optical focusing device including a body, a sleeve pivotally connected to the body, a lens screwedly engaged with the sleeve, and a piezoelectric actuator fixedly disposed in the body for contacting and driving the sleeve to rotate. The body and the lens are provided with first and second guiding portions respectively for positioning and sliding, so as to drive the sleeve to rotate and thereby actuate focusing of the lens. The optical focusing device is structurally simple and configured to increase a driving force.

REFERENCES:
patent: 5225941 (1993-07-01), Saito et al.
patent: 5706143 (1998-01-01), Hipp
patent: 6710950 (2004-03-01), Rouvinen et al.
patent: 6961193 (2005-11-01), Kang et al.
patent: 7099093 (2006-08-01), Jeong et al.
patent: 2007/0183064 (2007-08-01), Shibazaki

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