Optical lens

Abstract

The invention provides an optical lens. The optical lens comprises a diaphragm, a first lens, a second lens, a third lens, a fourth lens and a fifth lens from the object side to the imaging surface insequence, wherein the first lens has positive power, and the object side surface of the first lens is convex; the second lens has negative power, and the image side surface of the second lens is concave; the third lens has positive power, the object side surface of the third lens is convex, and the image side surface of the third lens is concave; the fourth lens has positive power, the image sidesurface of the fourth lens is convex, and the object side surface of the fourth lens is concave; and the fifth lens has negative power, the object side surface of the fifth lens is concave at the near optical axis, and the image side surface of the fifth lens is concave at the near optical axis. The entrance pupil diameter EPD of the optical lens is less than 1.58 mm; the distance between the entrance pupil of the optical lens and the effective diameter edge of the object side surface of the first lens is greater than 0.17mm on the axis. According to the optical lens, the five lenses with specific refractive power are adopted, a specific surface shape and combination are adopted, so that the effective imaging area of the first lens is becomes smaller, a light entering area of the lens ona screen becomes smaller, and the requirements of a full screen of a mobile phone can be better met.

Description

technical field [0001] The invention relates to the technical field of lens imaging, in particular to an optical lens. Background technique [0002] At present, with the popularization of portable electronic devices (such as smartphones, tablets, and cameras), coupled with the popularity of social, video, and live broadcast software, people are more and more fond of photography, and camera lenses have become a must for electronic devices. Standard configuration, camera lenses have even become the primary consideration for consumers when purchasing electronic equipment. [0003] With the continuous development of mobile information technology, portable electronic devices such as mobile phones are also developing in the direction of ultra-thin, full-screen, ultra-high-definition imaging, etc., which puts forward higher requirements for camera lenses mounted on portable electronic devices . In recent years, as consumers are keen on the full screen of mobile phones, in additio...

AI Technical Summary

Problems solved by technology

In recent years, as consumers are keen on the full screen of mobile phones, in addition to the demand for high pixels, the front lens is more pursuing visual simplicity; however, due to the large outer diameter and overall volume of the existing camera lens, "Notch screen" appeared, however, the area of ​​the notch is larger, that is, the opening area on the screen of the mobile phone is larger, and the screen-to-body ratio cannot be further improved

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