Large-aperture glass-plastic hybrid ultra-wide-angle lens and working method thereof

Abstract

The invention relates to a large-aperture glass-plastic hybrid ultra-wide-angle lens and a working method thereof. The large-aperture glass-plastic hybrid ultra-wide-angle lens comprises a front groupof lenses, a diaphragm, a rear group of lenses, a flat plate and an IMA image surface which are sequentially arranged from left to right along the incident direction of light, wherein the front groupof lenses consists of a first meniscus negative lens, a second meniscus negative lens and a first biconvex positive lens which are arranged in sequence; the rear group of lenses is composed of a second biconvex positive lens and a gluing piece formed when a first meniscus positive lens and a third meniscus negative lens are arranged in sequence and connected in a sealed mode; and the second meniscus negative lens, the first meniscus positive lens and the third meniscus negative lens are plastic aspheric lenses. The lens is simple and reasonable in structure, small in size, large in aperture,low in distortion and high in resolution, and the field angle is 170 degrees.

Description

technical field [0001] The invention relates to a large-aperture glass-plastic hybrid ultra-wide-angle lens and a working method thereof. Background technique [0002] In recent years, as the application range of camera lenses has become wider and wider, people have higher and higher requirements for the pixels and field of view of the lens. However, the existing lenses generally have such shortcomings: the field of view is not large enough, often less than 140°, and it is necessary to install one or even a few more lenses to capture the required range; the aperture is small, and it cannot meet the minimum requirements of the CCD chip under low illumination. Imaging illuminance requirements make it difficult to image clearly, the distortion is large under a large field of view, the external size is large, and it takes up a lot of space. Contents of the invention [0003] The object of the present invention is to provide a large-aperture glass-plastic hybrid ultra-wide-ang...

AI Technical Summary

Problems solved by technology

However, the existing lenses generally have such shortcomings: the field of view is not large enough, often less than 140°, and it is necessary to install one or even a few more lenses to capture the required range; the aperture is small, and it cannot meet the minimum requirements of the CCD chip under low illumination. Imaging illuminance requirements make clear imaging impossible, large distortion in large field of view, larger dimensions, and more space

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