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:
Feb. 10, 2009
Filed:
May. 24, 2007
Han-wei Su, Hsinchu, TW;
Chao-chang HU, Hsinchu, TW;
Han-Wei Su, Hsinchu, TW;
Chao-Chang Hu, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu Hsien, TW;
Abstract
A piezoelectric-driving optical lens module is disclosed, including a lens body a piezoelectric actuator for providing a driving force, and a position sensor for detecting position variations. The lens body includes at least a hollow base body, a lens barrel exhibiting axial freedom of movement positioned inside the hollow base body, and a lens set disposed inside the lens barrel. The lens barrel is driven by a piezoelectric actuator to move the lens set along the optical axis to achieve the optical functions of zooming and focusing. The position sensor is configured to detect the axial position of the lens barrel with respect to the hollow base body, thereby providing a simple structure to improve on the drawbacks of prior techniques.