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:
Jun. 04, 2013
Filed:
Jul. 11, 2011
Xiao-na Liu, Guangdong, CN;
Fang-ying Peng, New Taipei, TW;
Hai-jo Huang, New Taipei, TW;
An-tze Lee, New Taipei, TW;
Sheng-an Wang, New Taipei, TW;
Xiao-Na Liu, Guangdong, CN;
Fang-Ying Peng, New Taipei, TW;
Hai-Jo Huang, 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 includes, in order from the magnification end to the minimization end thereof: a first lens group of a negative refractive power; and a second lens group of a positive refractive power. The projection lens satisfies the formula: 0.061<F/L<0.078; where F represents the effective focal length of the projection lens and L represent the total length of the projection lens.