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:
May. 05, 2015
Filed:
Aug. 20, 2013
Shih-han Chen, Taichung, TW;
Hung-chien Hsieh, Taichung, TW;
Chia-cheng Lin, Taichung, TW;
Genius Electronic Optical Co., Ltd., Central Taiwan Science Park, Daya District, Taichung, TW;
Abstract
An optical imaging lens set includes: a first lens element with positive refractive power, a second lens element having an image-side surface with a concave portion in a vicinity of its periphery, a third lens element with positive refractive power, having a convex image-side surface, an object-side surface with a concave portion in a vicinity of its periphery, a fourth lens element having a concave object-side surface, and a plastic fifth lens element having an image-side surface with a concave portion in a vicinity of the optical axis. The total thickness Tof the all lens elements along the optical axis, all four air gaps Gaa between each lens element along the optical axis, the thickness Tof the third lens element along the optical axis and the thickness Tof the fifth lens element along the optical axis satisfy the relation (T+G)/(T+T)≦4.00.