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:
Aug. 16, 2016
Filed:
Nov. 05, 2014
Kantatsu Co., Ltd., Yaita-shi, Tochigi, JP;
Shingo Yuza, Sukagawa, JP;
KANTATSU CO., LTD., Yaita-shi, JP;
Abstract
An imaging lens includes, in order from an object side, a first positive lens having a convex object-side surface, a second negative lens having a concave image-side surface, a third positive double-sided aspheric lens, a fourth positive lens having a convex image-side surface, and a fifth negative double-sided aspheric lens having a concave image-side surface, wherein the fifth lens image-side surface has pole-change points off an optical axis; and conditional expressions below are satisfied:0.80<ih/<1.00  (1)0.6</2ih<0.75  (2)2.3<3/<10.3  (3)0.5<1/4<1.4  (4)where f denotes focal length of the imaging lens overall optical system, f, fand fdenote focal lengths of the first, third and fourth lenses respectively, ih denotes maximum image height, and TTL denotes distance on the optical axis from the first lens object-side surface to the image plane.