Low-distortion and high-resolution infrared miniature lens

Abstract

The invention relates to a low-distortion and high-resolution infrared miniature lens. An optical system of the lens is provided with a front assembly A with negative focal power, an iris diaphragm C and a rear assembly B with positive focal power sequentially in an incidence direction from left to right along a light ray, wherein the front assembly A is provided with a positive crescent lens A-1, a negative crescent lens A-2, a negative crescent lens A-3 and a first agglutination group tightly connected with a double convex lens A-4 and a double concave lens A-5 sequentially; and the rear assembly B is provided with a double convex lens B-1, a second agglutination group tightly connected with a double convex lens B-2 and a double concave lens B-3 and a double convex lens B-4 sequentially. The lens has the advantages of compact structure, small size, light weight, low distortion, large relative aperture, high resolution, broad spectrum common focus and the like, can perform imaging clearly both in a lighting environment in the daylight and in an extremely low illumination environment at night, and can meet the requirement for shooting a fine definition video with a pixel of 8 million.

Description

technical field [0001] The invention relates to a camera lens device of a miniature video camera system, in particular to a low-distortion and high-resolution infrared miniature lens. Background technique [0002] The emergence and application of small TV surveillance cameras have a history of 20 to 30 years, and there are a variety of miniature camera lenses of various specifications and models to match them. Their performance indicators vary, and most of them are low-end products with low performance indicators, which are only suitable for ordinary cameras with 200,000 to 300,000 pixels; the adaptive spectral range is narrow, and they can only be used under daylight conditions of 480nm to 700nm; image distortion If the amount is large, the difference between the image distortion and the real scene will become larger, and the authenticity will be poor. [0003] The rapid development of science and technology and the gradual improvement of people's safety awareness have pro...

AI Technical Summary

Problems solved by technology

[0004] In order to adapt to the development of high-definition micro-camera, improve the image quality of the micro-video camera system, improve the authenticity of the picture, expand the application range of the micro-camera system, and overcome the defect of low technical performance indicators of the micro-camera lens, this paper The technical problem to be solved by the invention is to provide a low-distortion, high-resolution infrared microlens

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