Optical imaging lens

Abstract

The invention relates to the technical field of lenses, and discloses an optical imaging lens. The optical imaging lens comprises twelve lenses, a first lens element with positive refractive index hasa convex object-side surface, a second lens element with negative refractive index has a concave image-side surface, a third lens and an eleventh lens are concave lenses with negative refractive indexes, a fourth lens, a fifth lens and a twelfth lens are convex lenses with positive refractive indexes, a sixth lens is a convex flat lens with positive refractive index, a seventh lens has positive refractive index and the image side surface is a convex surface, an eighth lens is a convex-concave lens with negative refractive index, a ninth lens is a convex-concave lens with positive refractive index, a tenth lens is a flat convex lens with positive refractive index, and the third lens and the fourth lens are glued with each other; the eighth lens and the ninth lens are glued with each other;and the tenth lens and the eleventh lens are glued with each other. The optical imaging lens has the advantages of the large image surface, the high unit pixel ratio, large light transmission, good chromatic aberration optimization and good imaging quality.

Description

technical field [0001] The invention belongs to the field of lens technology, and in particular relates to an optical imaging lens used in an intelligent traffic system. Background technique [0002] With the continuous advancement of science and technology and the continuous development of society, optical imaging lenses have also developed rapidly in recent years, and are widely used in smart phones, tablet computers, video conferencing, vehicle monitoring, security monitoring, intelligent transportation systems, etc. Therefore, the requirements for optical imaging lenses are getting higher and higher. [0003] In intelligent transportation systems, the performance of optical imaging lenses is critical and will affect the reliability of the entire system. However, the optical imaging lenses currently used in intelligent transportation systems have a low ratio of unit pixels (pixels), which is not conducive to the development of later algorithms; the general light transmis...

AI Technical Summary

Problems solved by technology

However, the optical imaging lenses currently used in intelligent transportation systems have a low ratio of unit pixels (pixels), which is not conducive to the development of later algorithms; the general light transmission is relatively small, and the relative illuminance at the edge of the imaging surface is low; the size of the image surface (i.e. Diagonal length) is about 1 / 1.8 inch and 1 inch, which are relatively small, and the total pixel value is low; the general color difference optimization is insufficient, and blue-purple fringing is prone to occur, which can no longer meet the increasing requirements of intelligent transportation systems. Improve

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