High-definition wide-angle day-and-night confocal optical system and camera module applying same

Abstract

The embodiment of the invention discloses a high-definition wide-angle day-and-night confocal optical system, which sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens from an object plane to an image plane along an optical axis, wherein the object plane side of the first lens is a convex surface, the image plane side is aconcave surface, and the focal power is negative; the object plane side of the second lens is a concave surface, the image plane side is a convex surface, and the focal power is positive; the third lens is a biconvex lens, and the focal power of the third lens is positive; the fourth lens is a biconcave lens, and the focal power of the fourth lens is negative; the image plane side of the fifth lens is a convex surface, and the focal power of the fifth lens is positive; the sixth lens is a biconvex lens, and the focal power of the sixth lens is positive; the object plane side of the seventh lens is a concave surface, the image plane side is a convex surface, and the focal power is negative. On the other hand, the embodiment of the invention further provides a camera module. The embodiment of the invention is composed of seven lenses, the number of the lenses is reasonable, and the structure is simple; the lens has good performance such as day-and night-confocal property, large viewing angle, high resolution and excellent athermalization.

Description

Technical field: [0001] The invention relates to an optical system and a camera module for its application, in particular to a high-definition wide-angle day and night confocal optical system and a camera module for its application. Background technique: [0002] With the development of science and technology, the high-definition wide-angle day and night confocal optical system or camera module can observe a wider spatial range due to its large viewing angle, and at the same time, the day and night confocal characteristics can ensure that it can be used in both day and night conditions. Effective work, so it is widely used in the field of automobiles and assisted driving. But it has many lens pieces and lack of complex structure. Invention content: [0003] In order to overcome the problems of a large number of lenses and a complex structure in existing optical systems or camera modules, the embodiments of the present invention provide a high-definition wide-angle day-nig...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of large number of lenses and complex structure in the existing optical system or camera module, the embodiment of the present invention provides a high-definition wide-angle day and night confocal optical system

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