Patent ID: 9354427
Filing Date: 2016-05-31
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; a third lens with positive or negative refractive power having at least one aspheric surface; a fourth lens with positive refractive power; a fifth lens as a meniscus double-sided aspheric lens having a concave surface near an optical axis on the image side; and a sixth lens as a meniscus lens having a concave surface near the optical axis on the object side, wherein both surfaces of the fifth lens have pole-change points off the optical axis, and wherein a conditional expression (5) below is satisfied: where f: focal length of an overall optical system of the imaging lens f6: focal length of the sixth lens.