Optical lens and imaging device

Abstract

The invention discloses an optical lens and imaging equipment. The optical lens sequentially comprises a diaphragm, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and an optical filter from an object side to an imaging surface along an optical axis, wherein the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface; the object side surface of the second lens is a concave surface, and the image side surface of the second lens is a convex surface near the optical axis; the object side surface of the third lens is a convex surface near the optical axis, and the image side surface of the third lens is a concave surface near the optical axis; the fourth lens has positive focal power, and the image sidesurface of the fourth lens is a convex surface; the fifth lens has negative focal power, the object side surface and the image side surface of the fifth lens are both concave surfaces near the optical axis, and the object side surface and the image side surface of the fifth lens are both provided with at least one inflection point; the optical filter is further arranged. the first lens, the second lens, the third lens, the fourth lens and the fifth lens are aspheric lenses. According to the optical lens, the influence of ghosting on the imaging quality can be reduced, and the balance of highpixel and miniaturization is realized.

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] At present, with the popularity of portable electronic devices and the popularity of social networking, video, and live broadcast software, people are more and more fond of photography. Camera lenses have become standard equipment for electronic equipment, and camera lenses have even become consumers The first index to consider when purchasing electronic equipment. In recent years, with the continuous development of the design level and manufacturing and processing technology, the camera lens is constantly developing towards the direction of small size, light weight and high performance. [0003] However, the inventor found in the research of the existing camera lens that in order to improve the imaging performance of the lens, on the one hand, it is achieved by increasing the number of lenses, usually 6...

AI Technical Summary

Problems solved by technology

[0003] However, the inventor found in the research of the existing camera lens that in order to improve the imaging performance of the lens, on the one hand, it is achieved by increasing the number of lenses, usually 6-7 lenses are designed, which leads to a larger lens size and a lower cost. Higher, and the presence of ghosts affects the image quality; on the other hand, the use of complex optical lens design results in high sensitivity to product structure, increased processing difficulty, and the impact of ambient light on image quality increase

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