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.

Date of Patent:
Apr. 18, 2017

Filed:

Sep. 24, 2015
Applicant:

Fujifilm Corporation, Tokyo, JP;

Inventors:

Noboru Koizumi, Saitama-ken, JP;

Hideo Kanda, Saitama-ken, JP;

Michio Cho, Saitama-ken, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 13/18 (2006.01); G02B 9/60 (2006.01); G02B 13/00 (2006.01); G02B 5/00 (2006.01); G02B 27/00 (2006.01); G02B 3/04 (2006.01);
U.S. Cl.
CPC ...
G02B 13/0045 (2013.01); G02B 5/005 (2013.01); G02B 9/60 (2013.01); G02B 27/0025 (2013.01); G02B 3/04 (2013.01); G02B 13/002 (2013.01); G02B 13/0015 (2013.01); G02B 13/18 (2013.01);
Abstract

An imaging lens consists of five lenses consisting of, in order from the object side, a biconvex first lens, a biconcave second lens, a positive third lens having a meniscus shape with the convex surface toward the image side, a positive fourth lens having a meniscus shape with the convex surface toward the image side, and a negative fifth lens having a concave surface toward the image side, and having at least one inflection point on the image-side surface thereof, wherein condition expression (1), 0<f/f3<0.6, relating to the focal length f of the entire system and the focal length f3 of the third lens, and condition expression (2), 0.12<D7/f<0.3, relating to the focal length f of the entire system and the distance D7 between the third lens and the fourth lens along the optical axis are satisfied.


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