Optical lens and imaging equipment

Abstract

The invention discloses an optical lens and an imaging device. The optical lens sequentially includes from the object side to the imaging surface along the optical axis: a first lens with negative refractive power, the object side surface is convex and the image side surface is concave; ; The second lens with positive refractive power, and its image side is convex; The third lens with positive refractive power, its object side is concave at the near optical axis and has at least one inflection point, and its image side is convex; With The fourth lens with negative refractive power, its object side is convex at the near optical axis, its image side is concave at the near optical axis, and the object side and the image side of the fourth lens both have at least one inflection point; wherein , the first lens, the second lens, the third lens and the fourth lens are all plastic aspherical lenses. The optical lens can realize the miniaturization of the wide-angle lens and the balance of high pixels, which can effectively improve the camera experience of the user.

Description

technical field [0001] The invention relates to the technical field of imaging lenses, in particular to an optical lens and imaging equipment. Background technique [0002] Optical lens is an important part of the optical imaging system, and it is one of the standard configurations of terminals such as mobile phones, tablets, security monitoring equipment, and driving recorders. In recent years, with the continuous development of mobile information technology, the demand for terminals has continued to increase, and the number of optical lenses mounted on terminals has also increased. [0003] With users' enthusiasm for thinner and lighter terminals, and in pursuit of better imaging effects, this requires optical lenses to not only meet the requirements of miniaturization, but also have the characteristics of wide viewing angles. However, among the existing technologies, currently on the market None of the existing optical lenses can achieve a good balance between miniaturiz...

AI Technical Summary

Problems solved by technology

[0003] With users' enthusiasm for thinner and lighter terminals, and in pursuit of better imaging effects, this requires optical lenses to not only meet the requirements of miniaturization, but also have the characteristics of wide viewing angles. However, among the existing technologies, currently on the market None of the optical lenses can achieve a good balance between miniaturization and wide viewing angle. After realizing the miniaturization of the lens, the viewing angle is often sacrificed, or after realizing the wide viewing angle of the lens, there are often defects of large size.

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