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:
Jan. 20, 2009
Filed:
Sep. 29, 2004
Yi-ming Lee, Taipei, TW;
Wei-kuo Shih, Taipei Hsien, TW;
Yi-Ming Lee, Taipei, TW;
Wei-Kuo Shih, Taipei Hsien, TW;
Lite-on Technology Corporation, Taipei, TW;
Abstract
A two-step auto focus lens system for a digital camera so that the digital camera can switch between a near focal point and a far focal point. The two-step auto focus lens system includes a coil base, a sensor, and a lens barrel. The coil base has two ends and a coil around the coil base. The sensor is disposed corresponding to one end of the coil base to drives the coil base to switch polarities of the two ends of the coil base. The lens barrel is movably installed inside the coil base and has a magnetic component corresponding to the other end of the coil base. When the coil base is driven by the sensor to switch polarities of ends of coil base, lens barrel moves relative to the coil base to the near and far focal points.