Patent ID: 8619175

Claim:
An image pickup lens for forming an image of a subject onto an image pickup surface of a solid-state image pickup element where a diagonal length of the image pickup surface being 2Y, the image pickup lens comprising in order from an object side thereof: a first lens with a positive refractive power, comprising a convex surface facing the object side; a second lens with a negative refractive power, comprising two aspheric surfaces; a third lens with a negative refractive power, comprising an aspheric surface; a fourth lens with a positive refractive power, comprising a convex surface facing an image side; and a fifth lens with a negative refractive power, wherein there is a surface distance on the optical axis between each of the first to fifth lenses; an image-side surface of the fifth lens has an aspheric shape, and includes an inflection point at a position excluding an intersection point with an optical axis, and the image pickup lens satisfies the following conditional expressions: 20 <v 1 âˆ’v 2<70â€ƒâ€ƒ(4) L/ 2 Y< 1.1â€ƒâ€ƒ(10) where v1 is an Abbe number of the first lens, v2 is an Abbe number of the second lens, and L is a distance along the optical axis from a lens surface arranged at a closest position to the object side in a total system of the image pickup lens to a focal point at the image side.