| 摘要 |
PROBLEM TO BE SOLVED: To provide a zoom lens having a compact size, a high magnification, and good optical performance in an entire zoom range.SOLUTION: A zoom lens comprises, in order from an object side: a first lens group GR1 having positive refractive power; a second lens group GR2 having negative refractive power; a third lens group GR3 having positive refractive power; a fourth lens group GR4 having positive refractive power; a fifth lens group GR5 having negative refractive power; and a sixth lens group GR6 having positive refractive power. During zooming, a distance from a first lens group GR1 to an image surface is fixed and at least a distance, from each of the second lens group GR2, the third lens group GR3, the fourth lens group GR4, and the fifth lens group GR5 to the image side, is changed. The zoom lens satisfies the following conditional expressions: 0.15<H2/α<0.5...(1), 1.0<M2/M3<8.0...(2).SELECTED DRAWING: Figure 1 |
