The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 04, 2008
Filed:
May. 18, 2007
Applicants:
Han-wei Su, Hsinchu, TW;
Chao-chang HU, Hsinchu, TW;
Inventors:
Han-Wei Su, Hsinchu, TW;
Chao-Chang Hu, Hsinchu, TW;
Assignee:
Industrial Technology Research Institute, Hsinchu Hsien, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 7/02 (2006.01);
U.S. Cl.
CPC ...
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.