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:
Aug. 27, 2013
Filed:
Dec. 30, 2011
Hai-jo Huang, New Taipei, TW;
Fang-ying Peng, New Taipei, TW;
Sheng-an Wang, New Taipei, TW;
An-tze Lee, New Taipei, TW;
Xiao-na Liu, Guangdong, CN;
Hai-Jo Huang, New Taipei, TW;
Fang-Ying Peng, New Taipei, TW;
Sheng-An Wang, 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 wide-angle zoom lens system includes a first lens group with negative refraction power, a second lens group with positive refraction power, and a third lens group with positive refraction power. The first lens group, the second lens group, and the third lens group move along an optical axis of the zoom lens system in focusing. The wide-angle zoom lens system satisfies the formulas: 0.77<|f2/f1|<1.1; and 0.7<L/f<1.08; wherein f1 is the effective focal length of the first lens group, f2 is the effective focal length of the second lens group, Lis a distance of the second lens group moving from a wide-angle state to a telephoto state, and fis the effective focal length of the wide-angle zoom lens system in the telephoto state.