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:
Dec. 17, 2013
Filed:
Apr. 01, 2011
Applicant:
Hiromitsu Yamakawa, Saitama, JP;
Inventor:
Hiromitsu Yamakawa, Saitama, JP;
Assignee:
Fujifilm Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 3/02 (2006.01); G02B 13/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
An image pickup lens having the following disposed from an object side in the order listed below: a first lens having a negative meniscus shape with a concave surface on an image side, a second lens having a negative meniscus shape with a concave surface on the object side adjacent to an optical axis, a third positive lens having a convex surface on the image side adjacent to the optical axis, an aperture, and a fourth lens having a bi-convex shape adjacent to the optical axis. Each of the second, third, and fourth lenses has an aspherical surface on each side.