Zoom lens and image pickup device including the same

摘要

A zoom lens is provided which has a wide angle of view and is bright and in which the entire lens system is compact and which can achieve high optical characteristic over the entire zoom range.

主权项

1. A zoom lens, comprising, in sequential order from an object side to an image side:
a first lens unit having a negative refractive power; and a second lens unit having a positive refractive power, the first lens unit and the second lens unit moving along respective loci different from each other during zooming, wherein the first lens unit includes a cemented lens G1b including a positive lens and a negative lens cemented to each other, and having a positive refractive power as a whole, wherein the second lens unit includes a positive lens satisfying conditional expressions,
85.0<νd≦95.1,−0.25<θCt−(0.0047×νd+0.546)<−0.10, andθCt=(nC−nt)(nF−nC),where nC, nt and nF are refractive indices of a lens material for a C-line, a t-line and an F-line, respectively, and νd is an Abbe number for a d-line, and
wherein conditional expressions,
0.016<1/νdp−1/νdn<0.060, and1.3