Image pickup lens and image pickup apparatus including the same

摘要

An image pickup lens includes, in order from an object side; a negative front lens unit; a stop; and a positive rear lens unit, wherein the front lens unit includes a negative front first lens, a negative front second lens, and a positive front third lens, in order from the object side, wherein the rear lens unit includes a positive rear first lens having at least one aspherical surface and a cemented lens made up of a positive rear second lens and a negative rear third lens, in order from the object side, and wherein an Abbe constant of a positive lens disposed on the most object side, an Abbe constant of a negative lens disposed on the most image side, a focal length of the front lens unit, and a focal length of the rear lens unit are appropriately set.

主权项

1. An image pickup lens comprising, in order from an object ride so an image side:
a front lens unit having negative refractive power; a stop; and a rear lens unit having positive refractive power, wherein the front lens unit includes a front first lens having negative refractive power, a front second lens having negative refractive power, and a front third lens having positive refractive power, in order from the object side to the image side, wherein the rear lens unit includes a rear first lens having at least one aspherical surface and having positive refractive power and a cemented lens that is made up of a rear second lens having a positive refractive power and a rear third lens having a negative refractive power, in order from the object side to the image side, and wherein the following are satisfied
2.3<νp/νn<4.0−3.0