Patent ID: 8611024

Claim:
An image pickup lens, comprising the following disposed from an object side in the order listed below: a first lens which is a meniscus lens having a negative power and a concave surface on an image side; a second lens having an aspherical surface on each of the object and image sides and a negative power adjacent to an optical axis, the object side surface having a concave shape adjacent to the optical axis and the image side surface having a convex shape adjacent to the optical axis; a third lens having an aspherical surface on each of the object and image sides and a positive power adjacent to the optical axis, the image side surface having a convex shape adjacent to the optical axis; an aperture; and a fourth lens having an aspherical surface on each of the object and image sides and a positive power adjacent to the optical axis, the object side surface having a convex shape adjacent to the optical axis and the image side surface having a convex shape adjacent to the optical axis, wherein the image pickup lens satisfies Conditional Expression (5) given below when a combined focal length of the third lens and the fourth lens is taken as f 34 and a distance from a surface apex of the object side surface of the first lens to an image plane is taken as L 4.0< L/f 34<8.0 (5).