Patent ID: 9256053
Filing Date: 2016-02-09
CPC Classification: G02B

Claim Text:
1. An imaging lens consisting of, in order from an object side, five lenses of: a first lens that has a biconvex shape; a second lens that has a negative refractive power; a third lens that has a negative refractive power and has a meniscus shape which is concave toward the object side; a fourth lens that has a positive refractive power; and a fifth lens that has a negative refractive power and has an aspheric shape which is concave toward an image side and of which an image side surface has an extreme point, wherein the following conditional expressions (1) and (2) are satisfied: f is a focal length of a whole system, f45 is a composite focal length of the fourth and fifth lenses, and f4 is a focal length of the fourth lens.