| 摘要 |
PROBLEM TO BE SOLVED: To provide a zoom lens that is lightweight and offers a high zoom ratio and superior optical performance over an entire zoom range.SOLUTION: A zoom lens comprises, in order from the object side to the image side, a first lens group having positive refractive power, second lens group having negative refractive power, third lens group having positive refractive power, fourth lens group having negative refractive power, and a rear group comprising one or more lenses and having positive refractive power as a whole, where distance between each pair of adjacent lens groups changes while zooming. At least one of the lens groups located on the image side of the third group includes a resin lens having positive refractive power and a resin lens having negative refractive power, where a material of the resin lens having positive refractive power and a material of the resin lens having negative refractive power are each determined appropriately.SELECTED DRAWING: Figure 1 |
