| 摘要 |
PROBLEM TO BE SOLVED: To realize a compact and lightweight zoom lens capable of correcting hand shake. SOLUTION: A 1st lens group 11 having positive refractive power and fixed on an image face, a 2nd lens group 12 having negative refractive power and capable of executing variable power action by moving on the optical axis, a 3rd lens group 13 having positive refractive power and fixed on the image face, and a 4th lens group 14 having positive refractive power and capable of moving on the optical axis so as to hold the image face to be moved by the movement of the 2nd lens group and an object on a fixed position from a reference face are successively arranged from the object side to the image face side. The shake of an image due to the generation of hand shape can be corrected by moving the whole 3rd leng group 13 in a direction vertical to the optical axis. |
