| 摘要 |
PROBLEM TO BE SOLVED: To provide a zoom lens which offers a good anti-reflective effect, is less susceptible to generation of flare and ghosts, and easily provides high optical performance.SOLUTION: A zoom lens includes, in order from the object side to the image side: a first lens group that is stationary while zooming and has positive refractive power; a second lens group that moves while zooming and has negative refractive power; an intermediate lens group having one or more lens groups that move while zooming; and a rear lens group that is stationary while zooming and has positive refractive power. The second lens group has a concave lens surface having a light beam effective diameter 2D and a curvature radius Rs on the image side, and has an anti-reflection film comprising a plurality of fine structures having an average pitch of 400 nm or less formed on a lens surface GR1 that satisfies a conditional expression 0.40<|D/Rs|<0.90.SELECTED DRAWING: Figure 3 |
