Patent ID: 7420609

Claim:
An image pickup lens comprising in order from an object side of the image pickup lens: a first lens having positive refractive power whose convex surface faces the object side of the image pickup lens; an aperture stop; a meniscus-shaped second lens having positive refractive power whose convex surface faces an image side of the image pickup lens; and a third lens having negative refractive power whose concave surface faces the image side of the image pickup lens, wherein the image pickup lens satisfies the following conditional expressions: 0.8 <f 1 /f< 2.0 (1) 20<((ν1+ν2)/2)−ν3<70 (2) where f 1 is a focal length of the first lens, f is a focal length of a total system of the image pickup lens, ν 1 is the Abbe constant of the first lens, ν 2 is the Abbe constant of the second lens, ν 3 is the Abbe constant of the third lens.