| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a zoom lens having a vibration control function capable of compactifying the whole optical device, and capable of maintaining a satisfactory image at a high zoom ratio when compensating vibration. Ž<P>SOLUTION: This zoom lens is provided with the first lens group having positive refractive power, the second lens group having negative refractive power, the third lens group having positive refractive power, and the fourth lens group having positive refractive power, in this order from an object side toward an image side, and at least the first lens group is moved when zoomed from the wide angle end to a telescopic end. The third lens group has the 3a-th lens group of positive refractive power and the 3b-th lens group of negative refractive power, in this order from an object side toward an image side, the 3b-th lens group is constituted of a negative single negative lens, the 3a-th lens group is moved to have a component of a direction perpendicular to an optical axis, and the blurring of the image is corrected thereby when the zoom lens is vibrated. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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