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:
Mar. 16, 2010
Filed:
Dec. 09, 2008
Kuang-ju Wang, Taipei Hsien, TW;
Chun-hsiang Huang, Taipei Hsien, TW;
Kuang-Ju Wang, Taipei Hsien, TW;
Chun-Hsiang Huang, Taipei Hsien, TW;
Hon Hai Precision Industry Co., Ltd., Tu-Cheng, Taipei Hsien, TW;
Abstract
An exemplary projection lens system includes, in the order from the magnification side to the reduction side thereof, a first lens with a negative refractive power, a second lens with a positive refractive power, a lens group with a negative refractive power, and a third lens with a positive refractive power. The projection lens system satisfies the formula 0.3<|f/f(-)|<1.0, where fis a focal length of the first lens, f(-) is an effective focal length of the second lens, the lens group and the third lens.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile