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. 10, 2014
Filed:
Apr. 19, 2011
Hai-jo Huang, Tu-Cheng, TW;
Fang-ying Peng, Tu-Cheng, TW;
Sheng-an Wang, Tu-Cheng, TW;
Xiao-na Liu, Shenzhen, TW;
An-tze Lee, Tu-Cheng, TW;
Hai-Jo Huang, Tu-Cheng, TW;
Fang-Ying Peng, Tu-Cheng, TW;
Sheng-An Wang, Tu-Cheng, TW;
Xiao-Na Liu, Shenzhen, TW;
An-Tze Lee, Tu-Cheng, TW;
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 includes a first lens group with positive refraction power, a second lens group with negative refraction power, a third lens group with positive refraction power, and a fourth lens group with positive refraction power. The first lens group, the second lens group, the third lens group, and the fourth lens group move along an optical axis of the zoom lens in focusing. The wide-angle zoom lens satisfies the formulas: 1.6<f3/fw<2.1, where f3 is the effective focal length of the third lens group, and fw is the effective focal length of the wide-angle zoom lens in a wide angle state.