Zoom lens and imaging apparatus including the same

摘要

A zoom lens includes, in order from an object side to an image side, a first lens unit having positive refractive power, a second lens unit having negative refractive power, a third lens unit having positive refractive power, and a rear lens group including one or more lens units. An interval between adjacent lens units is changed in zooming, the first lens unit is moved closer to the object side at a telephoto end than at a wide-angle end. The first lens unit includes at least four lenses. An Abbe number and a material of a positive lens included in the first lens unit satisfy predetermined values. And, a focal length f1 of the first lens unit, and an amount of movement M1 of the first lens unit at zooming from the wide-angle end to the telephoto end are appropriately set.

主权项

1. A zoom lens comprising, in order from an object side to an image side:
a first lens unit having positive refractive power; a second lens unit having negative refractive power; a third lens unit having positive refractive power; and a rear lens group including one or more lens units, wherein an interval between adjacent lens units is changed in zooming, wherein the first lens unit is positioned closer to the object side at a telephoto end than at a wide-angle end, the first lens unit includes at least four lenses, the first lens unit includes one or more positive lenses using a material that satisfies a conditional expression of
85.0<νd1P<100.0 where an Abbe number of materials of positive lenses included in the first lens unit is νd1P, and conditional expressions of
5.0