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:
Mar. 22, 2016
Filed:
Nov. 24, 2014
Applicant:
A-optronics Technology Inc., Hsinchu, TW;
Inventor:
Chao-Hung Lin, Taipei, TW;
Assignee:
A-OPTRONICS TECHNOLOGY INC., Hsinchu, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02B 15/177 (2006.01); G02B 13/04 (2006.01); G02B 13/18 (2006.01);
U.S. Cl.
CPC ...
G02B 15/177 (2013.01); G02B 13/04 (2013.01); G02B 13/18 (2013.01);
Abstract
A zoom lens includes a first lens group having negative refractive power, a second lens group having positive refractive power and a third lens group having positive refractive power. The second lens group is disposed between the first lens group and the third lens group. The second lens group includes at least an aspheric glass lens. Through using the aspheric glass lens, the imaging quality of the disclosed zoom lens is not sensitive to temperatures changes.