| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a zoom lens which is compact and has a high magnification.SOLUTION: The zoom lens includes, in order from the object side to the image side, a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, and a fourth lens group having positive refractive power, and the intervals between the adjacent lens groups are changed when zooming. The first lens group includes, in order from the object side to the image side, one negative lens and one positive lens. The amount M1 of movement of the first lens group when zooming from the wide angle end to the telephoto end, the amount M2 of movement of the second lens group when zooming from the wide angle end to the telephoto end, the focal distance f1 of the first lens group, the focal distance f2 of the second lens group, and the zoom ratio Z of the zoom lens are appropriately set.</p> |
