Patent ID: 8885269

Claim:
An imaging lens substantially consisting of five lenses of: a first lens having positive power and a meniscus shape with its convex surface facing an object side, and at least one of the surfaces of which is an aspherical surface; a second lens having negative power and a concave surface facing an image side, and at least one of the surfaces of which is an aspherical surface; a third lens having negative power and a convex surface facing the object side, and at least one of the surfaces of which is an aspherical surface; a fourth lens having positive power and a convex surface facing the object side, and at least one of the surfaces of which is an aspherical surface; and a fifth lens having negative power and a concave surface facing the image side, and at least one of the surfaces of which is an aspherical surface, which are in this order from the object side, wherein the following conditional formula is further satisfied: 0.6 <f/f 1<0.95 (5-1), where f: a focal length of an entire system, and f 1 : a focal length of the first lens.