ZOOM LENS AND IMAGE PICKUP APPARATUS INCLUDING THE SAME

摘要

Provided is a zoom lens, including, in order from an object side to an image side: a positive first lens unit; a negative second lens unit; a positive third lens unit; and a rear lens group including at least one lens unit, in which the first lens unit is not configured to move for zooming, and the second lens unit, the third lens unit, and at least one lens unit included in the rear lens group are configured to move during zooming so that intervals between adjacent lens units are changed during zooming. A lateral magnification of the second lens unit at a wide angle end, a lateral magnification of the second lens unit at a telephoto end, a movement amount of the third lens unit during zooming from the wide angle end to the telephoto end, and a total length of the zoom lens 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 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 at least one lens unit, wherein during zooming, the first lens unit is not configured to move, and the second lens unit, the third lens unit, and at least one lens unit included in the rear lens group are configured to move so that intervals between adjacent lens units are changed during zooming, and wherein the following conditional expressions are satisfied:
20.0<β2t/β2w<150.0; and 0.01