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:
Sep. 25, 2012
Filed:
Apr. 18, 2011
Yasunari Fukuta, Hachioji, JP;
Masae Sato, Machida, JP;
Takashi Kawasaki, Hachioji, JP;
Kazuki Matsui, Hachioji, JP;
Yasunari Fukuta, Hachioji, JP;
Masae Sato, Machida, JP;
Takashi Kawasaki, Hachioji, JP;
Kazuki Matsui, Hachioji, JP;
Konica Minolta Opto, Inc., Tokyo, JP;
Abstract
An image pickup lens, comprises sequentially from an object side: an aperture stop, a first lens being a positive meniscus lens which has a convex surface at the object side and a concave surface at an image side opposite to the object side, and a second lens having a concave surface at the object side and an image side surface whose radius of curvature on an paraxial region is infinite or a negative value, wherein the first lens is the second lens and the image side surface of the second lens includes an aspheric surface to make a positive power strong toward a lens peripheral region, and wherein the image pickup lens is made to satisfy the following conditional formulas.1.55<n1<1.80  (1)0.4<3/<0.6  (2)40.0<ν2<90.0  (3)