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:
Jul. 30, 2013
Filed:
Dec. 30, 2011
Xiao-na Liu, Guangdong, CN;
Hai-jo Huang, New Taipei, TW;
Fang-ying Peng, New Taipei, TW;
An-tze Lee, New Taipei, TW;
Sheng-an Wang, New Taipei, TW;
Xiao-Na Liu, Guangdong, CN;
Hai-Jo Huang, New Taipei, TW;
Fang-Ying Peng, New Taipei, TW;
An-Tze Lee, New Taipei, TW;
Sheng-An Wang, New Taipei, TW;
Premier Image Technology (China) Ltd., Foshan, CN;
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Abstract
A projection lens system, in the order from a magnified side to a reduced side, includes a first lens group with negative refraction power and a second lens group with positive refraction power. The projection lens system satisfies the formulas: −1.55<F1/F2<−1.12; wherein F1 is the effective focal length of the first lens group, and F2 is the effective focal length of the second lens group.