| 摘要 |
Disclosed is an imaging lens having a small F-number, high resolution, a sufficiently wide angle of view, and a small size. An imaging lens includes: a first lens with a meniscus shape having a concave surface facing an object side; a second positive lens; a third negative lens with a meniscus shape having a convex surface facing an image side; and a fourth lens having a convex surface facing the object side. The first to fourth lenses are arranged in this order from the object side. The imaging lens satisfies the following conditional expression: 0.25<D/f<4.0 (where D indicates the distance between the first lens and the second lens on the optical axis and f indicates the focal length of the entire system). |
