| 摘要 |
<p>[Problem] To achieve a small f-number and high resolution while shortening the entire length in an imaging lens. [Solution] The imaging lens is substantially comprised of five lenses including sequentially from the side of an object: a first lens which has a positive power, forms a meniscus configuration with a convex surface facing the object side, and has at least one aspherical surface; a second lens which has a negative power with a concave surface facing the image side, and has at least one aspherical surface; a third lens which has a negative power with a convex surface facing the object side, and has at least one aspherical surface; a fourth lens which has a positive power with a convex surface facing the object side, and has at least one aspherical surface; and a fifth lens which has a negative power with a concave surface facing the image side, and has at least one aspherical surface.</p> |
