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. 25, 2008
Filed:
Apr. 19, 2008
Tsung-kai Chang, Hsinchu, TW;
Wen-sheng Tai, Taoyuan, TW;
Chin-sung Liu, Hsinchu, TW;
Yi-jung Chen, Yunlin, TW;
Tsung-Kai Chang, Hsinchu, TW;
Wen-Sheng Tai, Taoyuan, TW;
Chin-Sung Liu, Hsinchu, TW;
Yi-Jung Chen, Yunlin, TW;
TopRay Technologies, Inc., Hsinchu, TW;
Abstract
A driving apparatus for fine-tuning focus is provided, including a movable structure suspended inside an outer holder by a suspension set. The suspension set is connected to the movable structure and the outer holder respectively so that the movable structure is suspended inside the outer holder, and can move inside the outer holder. With a magnet force generated by the interaction of the magnetic field of said first magnet set and said second magnet set of said outer holder, and the electrical current in said first coils and said second coils of said movable structure, the magnet force is able to drive the movable structure upward and downward to adjust the focus.