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:
Nov. 01, 2016
Filed:
Aug. 19, 2014
Sirtec International (Suzhou) Co. Ltd, Suzhou, Jiangsu, CN;
Satoshi Do, Asaka, JP;
C. S. Cheng, Chungli, CN;
SIRTEC INTERNATIONAL (SUZHOU) CO. LTD, Suzhou, CN;
Abstract
A wide-angle lens is disclosed. The wide-angle lens includes a first lens element L, a second lens element L, a third lens element L, an aperture diaphragm S, a fourth lens element Land a fifth lens element Larranged from an object plane to an image plane. The first element Lis a meniscus lens element having a negative focal power and protruding toward the object plane, the second element Lis a meniscus lens element having a negative focal power and protruding toward the object plane, the third element Lis a meniscus lens element having a positive focal power and protruding toward the image plane, the fourth element Lis a meniscus lens element having a negative focal power and protruding toward the object plane, and the fifth element Lis a lens element having a positive focal power.