Patent ID: 7486448

Claim:
A zoom lens comprising, in order from an object side to an image side: a first lens unit having negative refractive power and including two lens elements or less; a second lens unit having positive refractive power; and a third lens unit having positive refractive power, wherein the zoom lens performs zooming by varying a distance between the first lens unit and the second lens unit and a distance between the second lens unit and the third lens unit; the second lens unit comprises: a first lens subunit including a positive lens element and a negative lens element; and a second lens subunit arranged on the image side of the first lens subunit and including a positive lens element and a negative lens element; and the following conditions are satisfied: ν1n<29, ν2n<30, 18<ν1 p−ν 1 n< 35, and 26<ν2 p−ν 2 n< 35, where ν1p and ν1n respectively represent Abbe numbers of materials of the positive lens element and the negative lens element of the first lens subunit, and ν2p and ν2n respectively represent Abbe numbers of materials of the positive lens element and the negative lens element of the second lens subunit.