| 摘要 |
PROBLEM TO BE SOLVED: To provide a zoom lens that facilitates image blur correction and can maintain good optical performance even upon correcting image blur, while avoiding increase in size of the system.SOLUTION: The zoom lens includes, successively from an object side to an image side, a first lens group to a third lens group having positive, negative, and positive refractive powers, respectively, and a rear group including one or more lens groups, in which spaces between adjoining lens groups vary upon zooming. The second lens group is entirely or partially a correction lens system A that can rotate about a point as a rotation center A on the optical axis or in the vicinity of the optical axis during image blur correction. An optical system disposed on the image side of the second lens group is entirely or partially a correction lens system B that can rotate about a point as a rotation center B on the optical axis or in the vicinity near of the optical axis during image blur correction. The rotation center A is positioned on the image side of a surface vertex of a lens surface closest to the object in the correction lens system A. The rotation center B is positioned on the image side of a surface vertex of a lens surface closest to the object in the correction lens system B. |
