Patent ID: 7706086

Claim:
An imaging lens of a three-lens configuration, comprising: in order from an object side an aperture diaphragm; a first lens of a positive lens having a convex surface on the object side; a second lens of a meniscus lens having a concave surface on the object side; and a third lens, the imaging lens satisfying conditional expressions: f/f 3<0.95 (1) BR 2<0 (2) wherein BR2 satisfies BR2=A/D 4 , A represents a distance from a vertex position on a object-side surface of the second lens and on an optical axis to a position on a image-side surface of the second lens through which a light ray passes toward a corner of an image height, provided that a traveling direction of the light ray is taken as appositive direction, and D 4 represents a center thickness of the second lens, f represents a focal length of the imaging lens, and f3 represents a focal length of the third lens.