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. 03, 2009
Filed:
Apr. 17, 2007
Hann-kuang Chen, Kaohsiung Hsien, TW;
Wen-chang Cheng, Kaohsiung Hsien, TW;
Ching-kuo Chu, Kaohsiung Hsien, TW;
Chih-chan Liao, Kaohsiung Hsien, TW;
Hsin-ping Ko, Kaohsiung Hsien, TW;
Chen-wei Lai, Kaohsiung Hsien, TW;
San-fan Chiu, Kaohsiung Hsien, TW;
Hann-Kuang Chen, Kaohsiung Hsien, TW;
Wen-Chang Cheng, Kaohsiung Hsien, TW;
Ching-Kuo Chu, Kaohsiung Hsien, TW;
Chih-Chan Liao, Kaohsiung Hsien, TW;
Hsin-Ping Ko, Kaohsiung Hsien, TW;
Chen-Wei Lai, Kaohsiung Hsien, TW;
San-Fan Chiu, Kaohsiung Hsien, TW;
Sunnytec Electronics Co., Ltd., Kaohsiung, TW;
Abstract
A variable focus device is adapted for focusing an image on an image sensing module, and includes a hollow fixing seat, a lens module and a lens coupling unit. The fixing seat is adapted for mounting the image sensing module therein. The lens coupling unit includes a piezoelectric layer and a metal layer disposed on the piezoelectric layer. The piezoelectric and metal layers are respectively formed with aligned lens mounting holes to permit mounting of the lens module to the lens coupling unit. The lens coupling unit is disposed relative to the fixing seat such that the lens module corresponds in position to the fixing seat. The piezoelectric layer deforms in response to application of a control signal thereto to move the lens module relative to the fixing seat, thereby varying a focal position of the lens module relative to the image sensing module in the fixing seat.