Zoom lens and image pickup apparatus including the same

摘要

A zoom lens includes, in order from an object side to an image side thereof, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, and a rear lens group including one or more lens units. A distance between adjacent ones of the lens units changes during zooming. The second lens unit and the third lens unit each include a resin lens element. A focal length f2p of the resin lens element included in the second lens unit, a focal length f3p of the resin lens element included in the third lens unit, and a focal length ft of the zoom lens at a telephoto end are set to satisfy predetermined mathematical conditions.

主权项

1. A zoom lens comprising, in order from an object side to an image side thereof:
a first lens unit having a positive refractive power; a second lens unit having a negative refractive power; a third lens unit having a positive refractive power; and a rear lens group including one or more lens units, wherein a distance between adjacent ones of the lens units changes during zooming, wherein the second lens unit and the third lens unit each include a resin lens element, and wherein the following conditional expressions are satisfied:
0.10<|f3p/ft|<0.23−2.40