Patent ID: 9400372
Filing Date: 2016-07-26
CPC Classification: G02B

Claim Text:
1. An imaging lens substantially consisting of five lenses, including: a first lens having a positive refractive power and a convex surface toward the object side; a second lens having a negative refractive power and is of a meniscus shape with a concave surface toward the object side; a third lens having a positive refractive power and is of a meniscus shape with a convex surface toward the object side; a fourth lens having a positive refractive power and is of a meniscus shape with a concave surface toward the object side; and a fifth lens having a negative refractive power and is of an meniscus shape having a convex surface toward the object side, the surface thereof toward the image side being of an aspherical shape having at least one inflection point within a range from an intersection of a principal light ray at a maximum angle of view with the surface toward the image side inwardly toward the optical axis in the radial direction, provided in this order from the object side; the imaging lens satisfying the following conditional formula: wherein f is the focal length of the entire system, and f1 is the focal length of the first lens, and the imaging lens satisfying the following conditional formula: wherein f3 is the focal length of the third lens.