Camera lens

摘要

A compact camera lens composed of the following five lenses in this sequence proceeding from the object side: a first positive meniscus lens, wherein the concave surface of the first positive meniscus lens faces away from the object side; a second negative lens, wherein the object-side surface of the second negative lens is concave; a third positive lens, wherein the image-side surface of the third positive lens is convex; a fourth biconvex lens; and a fifth negative lens. The fourth biconvex lens and the fifth negative lens are in each case cemented with one another. The object-side surface of the third positive lens and the image-side surface of the fifth negative lens are of aspherical form. The objective is particularly robust, compact, has a large aperture and very good imaging characteristics. It is suitable for example as an objective of an exterior mirror replacement camera in the automotive field.

主权项

1. A camera lens for imaging an object, said camera lens comprising a plurality of lenses, said plurality of lenses consisting of the following elements in the stated sequence proceeding from the object side:
a first positive meniscus lens,
wherein the concave surface of the first positive meniscus lens faces away from the object side; a second negative lens,
wherein the object-side surface of the second negative lens is concave; andwherein the value of the radius of curvature of the object-side surface of the second negative lens is smaller in magnitude than the magnitude of the value of the radius of curvature of the image-side surface of said lens; a third positive lens, wherein the image-side surface of the third positive lens is convex; and
wherein the value of the radius of curvature of the object-side surface of the third positive lens is greater in magnitude than the magnitude of the value of the radius of curvature of the image-side surface of said lens; a fourth biconvex lens; a fifth negative lens,
wherein the value of the radius of curvature of the object-side surface of the fifth negative lens is smaller in magnitude than the magnitude of the value of the radius of curvature of the image-side surface of said lens;wherein the fourth biconvex lens and the fifth negative lens are cemented with one another.