Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
November 4, 2008
Patent Application Number
11802023
Date Filed
May 18, 2007
Patent Primary Examiner
Patent 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.
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