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 7443610 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 28, 2008

Filed:

Dec. 07, 2007
Applicants:

Chun-ling Lin, Taipei Hsien, TW;

Chun-hsiang Huang, Taipei Hsien, TW;

Chung Lee, Taipei Hsien, TW;

Inventors:

Chun-Ling Lin, Taipei Hsien, TW;

Chun-Hsiang Huang, Taipei Hsien, TW;

Chung Lee, Taipei Hsien, TW;

Assignee:

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

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 13/18 (2006.01); G02B 9/60 (2006.01);
U.S. Cl.
CPC ...
Abstract

A lens system comprises a first lens positive in power, a second lens positive in power, a third lens negative in power, a fourth lens positive in power, and a fifth lens negative in power. The lens system meets a criteria of 1.6<TT/f<1.8, 1.6<f/f<1.8, and −0.6<f/f<−0.4, wherein TT denotes a distance between an object-side surface of the first lens and an image plane of the lens system; fdenoting an effective focal length of the second lens; f denoting an effective focal length of the entire lens system.


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Lin, Chun-Ling. (2008). Lens system (U.S. Patent No. 7443610). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7443610

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