Patent ID: 9195031
Filing Date: 2015-11-24
Classification: G02B

Abstract:
1. An imaging lens to form an image of an object on a solid-state image sensor, in which the elements are arranged in order from an object side to an image side, comprising: an aperture stop, a first lens with positive refractive power having a convex surface on the object side, a second lens with negative refractive power having a concave surface on the image side, a third lens with positive or negative refractive power having an aspheric shape on both lens surfaces, a fourth lens with positive refractive power having a convex surface on the image side, and a fifth lens with negative refractive power having a concave surface on the image side near an optical axis as a double-sided aspheric lens, all the lenses are made of plastic material, and conditional expressions (1) through (4) below are satisfied: where