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:
Aug. 15, 2017
Filed:
Nov. 13, 2015
Coretronic Corporation, Hsin-Chu, TW;
Tao-Hung Kuo, Hsin-Chu, TW;
Hsin-Wen Tsai, Hsin-Chu, TW;
Ching-Chuan Wei, Hsin-Chu, TW;
Chuan-Te Cheng, Hsin-Chu, TW;
Coretronic Corporation, Hsin-Chu, TW;
Abstract
A zoom lens includes a first lens group and a second lens group. The first lens group has a negative refractive power and includes a first lens, a second lens, and a third lens arranged in sequence from a magnified side to a minified side, refractive powers of which are negative, negative, and positive, respectively. The second lens group has a positive refractive power and is disposed between the first lens group and the minified side. The second lens group includes a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, and a tenth lens arranged in sequence from the magnified side to the minified side, refractive powers of which are positive, negative, positive, negative, positive, negative, and positive, respectively. The first lens and the tenth lens are aspheric lenses, and the second lens to the ninth lens are spherical lenses.