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:
Feb. 26, 2013
Filed:
Oct. 25, 2011
Hai-jo Huang, New Taipei, TW;
Sheng-an Wang, New Taipei, TW;
Fang-ying Peng, New Taipei, TW;
An-tze Lee, New Taipei, TW;
Xiao-na Liu, Guangdong, CN;
Hai-Jo Huang, New Taipei, TW;
Sheng-An Wang, New Taipei, TW;
Fang-Ying Peng, New Taipei, TW;
An-Tze Lee, New Taipei, TW;
Xiao-Na Liu, Guangdong, CN;
Hong Fu Jin Precision Industry (Shenzhen) Co. Ltd., Shenzhen, CN;
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Abstract
A zoom lens includes a first lens group of negative refractive power, a second lens group of positive refractive power and a third lens group of positive refractive power. The zoom lens satisfies the following condition formulas: 0.68<|f2/f1|<0.85, and 0.65<L2/fT<0.86, where f1 represents an effective focal length of the first lens group, f2 represents an effective focal length of the second lens group, L2 is a displacement of the second lens group when the zoom lens varies from a wide-angle state to a telephoto state, and fT represents an effective focal length of the zoom lens which is in the telephoto state.