Patent ID: 7782553

Claim:
An imaging lens used for forming an image of an object on an image-taking surface of an image sensor element, comprising: in order from an object side to an image surface side, a diaphragm, a first lens that is a meniscus lens having a positive power whose convex surface faces the object side, and a second lens that is a meniscus lens having a positive power whose convex surface faces the image surface side, wherein a condition expressed by the following expression (1) is to be satisfied: −30.5 ≦r 3 /d 3 ≦−19 (1) where, r 3 : center radius curvature of the object side face of the second lens d 3 : center thickness of the second lens; and wherein a condition expressed by a following expression (3) is to be further satisfied: 0.45 ≦r 1 /r 2 ≦0.55 (3) where, r 1 : center radius curvature of the object side face of the first lens r 2 : center radius curvature of the image surface side face of the first lens.