Patent ID: 8502907
Filing Date: 2013-08-06
Classification: G02B,H04N

Abstract:
1. An image pickup apparatus comprising: an image pickup lens for forming an image of a subject; an image pickup element comprising an image pickup surface with a diagonal length 2Y, for photo-electrically converting a subject image formed by the image pickup lens; and a lens barrel comprising an aperture section for an incident light from the object side, wherein the image pickup lens comprises, 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 a concave surface facing an image side; a third lens comprising an aspheric surface; a fourth lens with a positive refractive power, comprising a convex surface facing the image side; and a fifth lens with a negative refractive power, wherein 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 expression: where 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, and 2Y represents a diagonal length of an image pickup surface of an image pickup element of the image pickup apparatus.