High-resolution wide-angle infrared optical system and application thereof to camera module

Abstract

An embodiment of the invention discloses a high-resolution wide-angle infrared optical system which, from the object plane to the image plane along the optimal axis, sequentially comprises: a first lens, a second lens, a third lens, a fourth lens and a fifth lens, wherein the image plane side of the first lens is a concave surface with negative focal power; the object plane side of the second lensis a convex surface while the image plane side is a concave surface with positive focal power; the image plane side of the third lens is a convex surface with positive focal power; the object plane side of the fourth lens is a concave surface while the image plane side is a convex surface with positive focal power; the object plane side of the fifth lens is a convex surface while the image planeside is a concave surface with positive focal power. Furthermore, the embodiment of the invention also provides a camera module. The optical system and camera module provided by the embodiment of theinvention are mainly composed of just five lenses, and thus the structure is simple; through combination of different lenses and reasonable distribution of focal power, the high-resolution wide-angleinfrared optical system has good performance such as large aperture, large view angle, high resolution and perfect athermalization.

Description

Technical field: [0001] The invention relates to an optical system and a camera module for its application, in particular to a high-pixel wide-angle infrared optical system and a camera module for its application. Background technique: [0002] With the application of infrared imaging technology and the development of intelligent driving assistance systems, infrared lenses are more and more widely used in the vehicle field. However, the traditional infrared lens has the problems of large number of lenses and complex structure. Invention content: [0003] In order to overcome the problems of large number of lenses and high cost in the traditional infrared lens, an embodiment of the present invention provides a high-pixel wide-angle infrared optical system. [0004] A high-pixel wide-angle infrared optical system, which sequentially includes: a first lens, a second lens, a third lens, a fourth lens, and a fifth lens along an optical axis from an object plane to an image pla...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of large number of lenses and high cost in the traditional infra

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