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.:

US 7742241 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 22, 2010

Filed:

Sep. 01, 2008
Applicants:

Kuo-yen Liang, Taipei Hsien, TW;

Chun-hsiang Huang, Taipei Hsien, TW;

Inventors:

Kuo-Yen Liang, Taipei Hsien, TW;

Chun-Hsiang Huang, Taipei Hsien, TW;

Assignee:

Hon Hai Precision Industry Co., Ltd., Tu-Cheng, Taipei Hsien, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 9/12 (2006.01); H04N 5/225 (2006.01); G02B 3/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

An imaging lens system, in order from the object side to the image side thereof, includes a first lens with positive refractive power, a second lens with positive refractive power, a third lens with negative refractive power and an image sensing element. The imaging lens system satisfies the following formulas: L/TTL>1.23, and 0.3<G1R1/F1<0.4, where an active surface of the image sensing element is square and only includes effective pixels, and L is the length of one side of the active surface, image sensing element TTL is the distance along an optical axis thereof from the object-side lens surface of the first lens to an imaging plane of the image side, G1R1 is the radius of curvature of the object-side lens surface of the first lens, and F1 is the focal length of the first lens.


Find Patent Forward Citations

Liang, Kuo-Yen. (2010). Imaging lens system (U.S. Patent No. 7742241). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7742241

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