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:
Jun. 22, 2010
Filed:
Jun. 12, 2007
Motoyuki Ohtake, Saitama, JP;
Ken Tanaka, Tokyo, JP;
Tsutomu Naitou, Kanagawa, JP;
Takuya Tsutsumi, Tokyo, JP;
Eiji Yano, Tokyo, JP;
Tatsuyuki Takahashi, Kanagawa, JP;
Motoyuki Ohtake, Saitama, JP;
Ken Tanaka, Tokyo, JP;
Tsutomu Naitou, Kanagawa, JP;
Takuya Tsutsumi, Tokyo, JP;
Eiji Yano, Tokyo, JP;
Tatsuyuki Takahashi, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A zoom lens includes: a front group including a plurality of movable lens groups; and a rear group that is provided on an image side of the front group and that includes a negative lens and a positive lens. The positive lens has a flat lens surface on its image side, and is tiltable about a spherical center of its object side lens surface that is convex on the object side. When a lens system is inclined, the positive lens is tilted in relation to the optical axis of the lens system based on: a focal length of the overall lens system; an angle of the optical axis of the lens system after being inclined in relation to the optical axis before being inclined; a distance between the image side lens surface of the positive lens and the image plane; and a refractive index of the positive lens.