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:
Dec. 04, 2018
Filed:
Jul. 24, 2015
Applicant:
Young Optics Inc., Hsinchu, TW;
Inventors:
Assignee:
Young Optics Inc., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 15/14 (2006.01); G02B 15/173 (2006.01);
U.S. Cl.
CPC ...
G02B 15/14 (2013.01); G02B 15/173 (2013.01);
Abstract
A zoom lens including a first lens group, a second lens group, and a third lens group is provided. The first lens group is disposed between an object side and an image side and has at least one aspheric surface. The second lens group has a positive refractive power and is disposed between the first lens group and the image side. The third lens group has a positive refractive power and is disposed between the second lens group and the image side. The third lens group has at least one aspheric surface. The third lens group is suitable to move relative to the second lens group for focusing.