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. 09, 2014
Filed:
Jan. 17, 2013
Applicants:
Yu-hung Chou, Hsinchu, TW;
Ying-hsiu Lin, Hsinchu, TW;
Yuan-hung Su, Hsinchu, TW;
Shiu-sheng LI, Hsinchu, TW;
Inventors:
Yu-Hung Chou, Hsinchu, TW;
Ying-Hsiu Lin, Hsinchu, TW;
Yuan-Hung Su, Hsinchu, TW;
Shiu-Sheng Li, Hsinchu, TW;
Assignee:
Young Optics Inc., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 13/18 (2006.01); G02B 13/16 (2006.01); G03B 27/32 (2006.01);
U.S. Cl.
CPC ...
G02B 13/18 (2013.01); G02B 13/16 (2013.01); G03B 27/32 (2013.01);
Abstract
A fixed focal length lens includes a first lens group and a second lens group. The first lens group is disposed between a magnified side and a minified side and has a negative refractive power. The second lens group is disposed between the first lens group and the minified side and has a positive refractive power. The fixed focal length lens satisfies F/H>0.52, where F is an effective focal length of the fixed focal length, and H is an image height.