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:
Oct. 27, 2009
Filed:
Nov. 24, 2008
Chun-yi Yin, Taipei Hsien, TW;
Chun-hsiang Huang, Taipei Hsien, TW;
Chun-Yi Yin, Taipei Hsien, TW;
Chun-Hsiang Huang, Taipei Hsien, TW;
Hon Hai Precision Industry Co., Ltd., Tu-Cheng, Taipei Hsien, TW;
Abstract
An imaging lens includes, in the order from the object side to the image side, a first lens of positive refraction power, a second lens of negative refraction power, a third lens of positive refraction power, and a fourth lens of negative refraction power. The imaging lens satisfies the formulae (1) 1<T/F<1.4; (2) R/F>4; and (3) S/S>3, where T is the overall length of the imaging lens, F is the focal length of the imaging lens, Ris the radius of curvature of the object-side surface of the second lens, Sis the vertical distance from the edge to the center of the image-side surface of the third lens, and Sis the horizontal distance from the edge to the center of the image-side surface of the third lens.