| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a zoom lens capable of easily obtaining an excellent image with a high zoom ratio and reducing the thickness of a camera, etc., when the zoom lens is applied to the camera. <P>SOLUTION: The zoom lens comprises, in order from an object side to an image side, a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group including a reflection member folding an optical path, and a subsequent lens group comprising a plurality of lens groups. The subsequent lens group includes, in order from the object side to the image side, an N-th lens group having negative refractive power, a P1-th lens group having positive refractive power, and a P2-th lens group having positive refractive power. The N-th lens group comprises a negative lens and a positive lens. When performing zooming, the first lens group, the second lens group, the P1-th lens group, and the P2-th lens group are moved and the third lens group is fixed for zooming. The focal length f1 of the first lens group and the focal length ft of an entire system at a telephoto end are appropriately set respectively. <P>COPYRIGHT: (C)2013,JPO&INPIT |
