Zoom lens and image pickup apparatus

An image pickup apparatus comprising:

• a zoom lens;
• and
• an image sensor configured to receive an optical image formed by the zoom lens,
• wherein the zoom lens comprising, in order from an object side to an image side:
• a first lens unit having negative refractive power;
• and
• a rear group including two or more lens units, and an aperture stop,
• wherein the rear group includes an image stabilizing unit having negative refractive power and configured to move with a component in a direction orthogonal to an optical axis during image stabilization, and a focus unit disposed on the object side of the image stabilizing unit,
• wherein a distance between adjacent lens units changes during zooming,
• wherein the image stabilizing unit includes a negative lens having a meniscus shape with a convex surface on the object side, and
• wherein the following inequalities are satisfied:
• 0.4
• ≤
• DISw
• /
• DSPw
• ≤
• 0
• .
• 8
• ⁢
• 0
• 3.5
• ≤
• (
• R
• ⁢
• 1
• +
• R2
• )
• /
• (
• R
• ⁢
• 1
• -
• R
• ⁢
• 2
• )
• ≤
• 1
• ⁢
• 3
• .
• 0
• where DSPw is a distance on the optical axis from the aperture stop to an image plane at a wide-angle end, DISw is a distance on the optical axis from the aperture stop to a surface disposed closest to an object in the image stabilizing unit at the wide-angle end, R1 is a radius of curvature of a surface of the negative lens on the object side, and R2 is a radius of curvature of a surface of the negative lens on the image side.

A zoom lens comprising, in order from an object side to an image side:

• a first lens unit having negative refractive power;
• and
• a rear group including two or more lens units, and an aperture stop,
• wherein the rear group includes an image stabilizing unit having negative refractive power and configured to move with a component in a direction orthogonal to an optical axis during image stabilization, and a focus unit disposed on the object side of the image stabilizing unit,
• wherein the first lens unit includes four or more negative lenses and at least one positive lens,
• wherein a distance between adjacent lens units changes during zooming, and
• wherein the following inequality is satisfied:
• 0.4
• ≤
• DISw
• /
• DSPw
• ≤
• 0
• .
• 8
• ⁢
• 0
• where DSPw is a distance on the optical axis from the aperture stop to an image plane at a wide-angle end, and DISw is a distance on the optical axis from the aperture stop to a surface disposed closest to an object in the image stabilizing unit at the wide-angle end.