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:
May. 28, 2013
Filed:
Aug. 30, 2010
Takumi Iba, Kyoto, JP;
Nami Sawada, Hyogo, JP;
Masatoshi Yamashita, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An image pickup lens compatible with small high-pixel image pickup elements (e.g., from CCD and CMOS image sensors having a pixel pitch of 1.75 μm and a pixel count of 5 mega pixels to CCD and CMOS image sensors having a pixel pitch of 1.4 μm and a pixel count of 8 mega pixels) is provided. An image pickup lensincludes, in order from an object side to an image surface side: an aperture stop, a first lenshaving positive power; a second lensthat is a meniscus lens having negative power and whose lens surface facing the image surface side is concave; a third lensthat is a meniscus lens having positive power and whose lens surface facing the image surface side is convex; and a fourth lensthat has negative power, whose lens surfaces are both aspherical and whose lens surface facing the image surface side is concave near the optical axis. A diffractive optical element is formed on one of the lens surfaces of the first lensor the second lens