| 摘要 |
<p>An imaging lens is structured in small size and at low cost, and achieves a wide angle of view and high optical performance. The imaging lens substantially consists of five lenses of a first lens (L1) having a meniscus shape with its convex surface facing an object side and negative refractive power, a second lens (L2) having negative refractive power, and the image-side surface of which has a convex shape facing an image side in the vicinity of an optical axis, a third lens (L3) having positive refractive power, a stop, a fourth lens (L4) having positive refractive power, and a fifth lens (L5) having negative refractive power. At least one of the surfaces of each of the first lens through the fifth lens (L1 through L5) is aspherical. A predetermined conditional formula about a distance on the optical axis from an object-side surface of the first lens (L1) to an image plane and a distance on the optical axis from the object-side surface of the first lens (L1) to the image-side surface of the second lens (L2) is satisfied.</p> |
