Patent ID: 9341823
Filing Date: 2016-05-17
CPC Classification: G02B

Claim Text:
1. An imaging lens which forms an image of an object on a solid-state image sensor, in which elements are arranged in order from an object side to an image side, comprising: 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 negative refractive power; a fourth lens with negative refractive power as a meniscus double-sided aspheric lens having a convex surface on the image side; and a fifth lens as a double-sided aspheric lens having a concave surface on the image side, wherein the aspheric image-side surface of the fifth lens has a pole-change point off an optical axis, and conditional expressions (1) and (2) below are satisfied: where νd1: Abbe number of the first lens at d-ray νd2: Abbe number of the second lens at d-ray ih: maximum image height TTL: total track length.