Large-aperture optical system and image pickup module set thereof

Abstract

The embodiments of the invention disclose a large-aperture optical system. The large-aperture optical system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens which are sequentially distributed from an object plane to an image plane along an optical axis; the image plane side of the first lens is a concave surface; the focal power of the first lens is negative; the object plane side of the second lens is a convex surface, the image plane side of the second lens is a concave surface, and the focal power of the second lens is negative; the object plane side of the third lens is a convex surface, the image plane side of the third lens is concave surface, and the focal power of the third lens is positive; the object plane side of the fourth lensis a convex surface, the image plane side of the fourth lens is a convex surface, and the focal power of the fourth lens is positive; the object plane side of the fifth lens is a concave surface, theimage plane side of the fifth lens is a convex surface, and the focal power of the fifth lens is negative; and the object plane side of the sixth lens is a convex surface, and the focal power of the sixth lens is positive. The embodiments of the present invention further provide an image pickup module set. The optical system and the image pickup module set of the embodiments of the invention eachare mainly composed of 6 lenses; and since the number of the lenses is small, and the structures of the optical system and the image pickup module set are both simple. The different lenses are combined with one another, and focal power is properly distributed, and therefore, the optical system and the image pickup module set have good performance such as large aperture, large viewing angle and high pixel, and are suitable for the vehicle-mounted imaging field.

Description

Technical field: [0001] The invention relates to an optical system and a camera module for its application, in particular to a large aperture optical system and a camera module for its application. Background technique: [0002] The existing optical systems or camera modules used in the field of vehicle imaging generally have the problems of large number of lenses and complex structures. Invention content: [0003] In order to overcome the common problems of large number of lenses and complex structures in the existing optical systems or camera modules used in the field of vehicle imaging, an embodiment of the present invention provides a large aperture optical system. [0004] A large-aperture optical system, sequentially comprising: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens along an optical axis from an object plane to an image plane; [0005] The image plane side of the first lens is concave, and its focal power is negativ...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the existing optical systems or camera modules used in the field of vehicle imaging, the common problems of large number of lenses and complex structures, the embodiment of the present invention provides a large aperture optical system

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