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. 22, 2015
Filed:
Jun. 28, 2013
Kuo-chuan Wang, Hsinchu, TW;
Kuo-shu Hung, Hsinchu, TW;
Hsin-te Chen, Hsinchu, TW;
Young Optics Inc., Hsinchu, TW;
Abstract
A zoom lens and a zoom lens module are provided. The zoom lens is configured to form an image of an object at an object side onto an image plane at an image side. The zoom lens includes a first lens group, a second lens group, a third lens group and a fourth lens group disposed in sequence from the object side towards the image side. The refractive powers of the first lens group, the second lens group, and the third lens group are negative, positive, and negative, respectively. The zoom lens satisfies 1.90<|T/F|<2.40. Tis a distance of the first lens group along an optical axis of the zoom lens, and Fis an effective focal length of the zoom lens when the zoom lens is at a wide-end.