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:
Dec. 14, 2010
Filed:
Sep. 28, 2007
Wei-yao Hsu, Hsinchu, TW;
Chien-shing Lee, Hsinchu, TW;
Nien-tsu Chen, Hsinchu, TW;
Po-jui Chen, Hsinchu, TW;
Cheng-fang Ho, Hsinchu, TW;
Fang-hsuan Su, Hsinchu, TW;
Fong-zhi Chen, Hsinchu, TW;
Chien-jen Chen, Hsinchu, TW;
Wei-Yao Hsu, Hsinchu, TW;
Chien-Shing Lee, Hsinchu, TW;
Nien-Tsu Chen, Hsinchu, TW;
Po-Jui Chen, Hsinchu, TW;
Cheng-Fang Ho, Hsinchu, TW;
Fang-Hsuan Su, Hsinchu, TW;
Fong-Zhi Chen, Hsinchu, TW;
Chien-Jen Chen, Hsinchu, TW;
Abstract
An auto focus device and method are provided. The device comprises a beam splitter set; a laser emitting device disposed at a first side of the beam splitter set for providing a laser beam to the beam splitter; a lens set disposed at a second side of the beam splitter set and opposing to the testing subject positioned at a third side of the beam splitter set for refracting a reflected beam from a testing subject for generating a light spot; and a photo detecting device disposed with respect to the lens set for receiving the light spot and generating a driving signal.