Patent ID: 9310582
Filing Date: 2016-04-12
CPC Classification: G02B,H04N

Claim Text:
1. An image pickup lens to form an image of an object onto a photoelectric conversion section, comprising, in the order from an object side thereof: a first lens which has a positive refractive power and includes a convex surface facing the object side; a second lens which has a negative refractive power; a third lens which includes an aspheric configuration on at least one surface thereof; a fourth lens which has a positive refractive power and includes a convex surface facing an image side; and a fifth lens which has a negative refractive power and includes a biconcave configuration, wherein an image-side surface of the fifth lens includes an aspheric configuration and has an inflection point at a position other than an intersection point with an optical axis, wherein the following conditional expressions are satisfied: wherein in the above expressions: r1 is a radius of curvature of an object side surface of the first lens, r2 is a radius of curvature of an image side surface of the first lens, f1 is a focal length of the first lens, f is a focal length of the whole system of the image pickup lens, and ΣDL13 is a distance on the optical axis from the object side surface of the first lens to the image side surface of the third lens.