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. 03, 2013
Filed:
Sep. 15, 2011
Applicant:
Kuan-ting Chen, New Taipei, TW;
Inventor:
Kuan-Ting Chen, New Taipei, TW;
Assignee:
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 9/06 (2006.01); G02B 13/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A lens system includes a first lens with positive refractive power and a second lens with positive refractive power, and an image plane. The first lens includes a first surface and a second surface from the object-side to the image-side of the lens system. The lens system satisfies the conditions: D/TTL>1.18; 1.5<F1/F<1.7; 0.15<R2/(F1)<0.25; wherein, D is a diameter of an effective imaging range of the image plane; TTL is a total length of the lens system, R2 is a radius of curvature of the second surface, F1 is a focal length of the first lens; F is a focal length of the lens system.