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:
Sep. 01, 2015
Filed:
Dec. 19, 2013
Yuan-long Cai, Hsinchu, TW;
Chien-hsiung Tseng, Hsinchu, TW;
Yu-hung Chou, Hsinchu, TW;
Young Optics Inc., Hsinchu, TW;
Abstract
A zoom lens including a first lens group, a second lens group, a third lens group, and a fourth lens group with positive, negative, positive, and positive refractive powers respectively arranged in sequence from an object side to an image side is provided. The first lens group includes a first lens and a second lens. The second lens group includes a third lens, a fourth lens, and a fifth lens. The third lens group includes a sixth lens. The fourth lens group includes a seventh lens, an eighth lens, and a ninth lens. The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, and the ninth lens respectively having negative, positive, negative, negative, positive, positive, positive, negative, and positive refractive powers are arranged in sequence from the object side to the image side.