IMAGING LENS

摘要

A compact high-resolution imaging lens which provides a wide field of view of 80 degrees or more and corrects various aberrations properly. Designed for a solid-state image sensor, the imaging lens includes constituent lenses arranged in the following order from an object side to an image side: a first positive (refractive power) lens having a convex object-side surface; a second negative lens having a concave image-side surface; a third positive lens as a double-sided aspheric lens having a convex object-side surface; a fourth positive lens having a convex image-side surface; a fifth lens as a double-sided aspheric lens having a concave image-side surface; and a sixth negative lens having a concave image-side surface. The image-side surface of the sixth lens has an aspheric shape with a pole-change point in a position off an optical axis.

主权项

1. An imaging lens for a solid-state image sensor in which elements are arranged in order from an object side to an image side, comprising:
a first lens with positive refractive power having a convex surface on the object side; a second lens with negative refractive power having a concave surface on the image side; a third lens with positive refractive power as a double-sided aspheric lens having a convex surface on the object side; a fourth lens with positive refractive power having a convex surface on the image side; a fifth lens as a double-sided aspheric lens having a concave surface on the image side; and a sixth lens with negative refractive power having a concave surface on the image side, wherein the image-side surface of the sixth lens has an aspheric shape with a pole-change point in a position off an optical axis.