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:
Aug. 02, 2011
Filed:
Feb. 24, 2006
Takeshi Hatakeyama, Chiba, JP;
Daisuke Kuroda, Kanagawa, JP;
Motoyuki Otake, Saitama, JP;
Yoshito Iwasawa, Tokyo, JP;
Takeshi Hatakeyama, Chiba, JP;
Daisuke Kuroda, Kanagawa, JP;
Motoyuki Otake, Saitama, JP;
Yoshito Iwasawa, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
An object is to reduce the effect of defocusing due to the movement of an image plane when a shifting lens group movable in a direction perpendicular to the optical axis for correcting hand jiggling is positionally deviated along the optical axis, thereby maintaining high optical performance at the time of correcting hand jiggling. A zoom lensincludes a plurality of lens groups with distances between the lens groups being changed for variable power. A final lens group Lwhich is positioned most closely to an image side has a sub lens group GS (G) having a positive refractive power and a sub lens group GR (G) disposed adjacent to the sub lens group GS (G) on the image side and having a positive refractive power. The sub lens group GS is shiftable in a direction perpendicular to the optical axis for correcting image blurs. The sub lens group GS has a lateral magnification βs and the sub lens group GR has a lateral magnification βR, the lateral magnifications satisfying the following conditional expressions (), ():βs<1  (1)0<βR<1  (2)