Optical imaging lens

Abstract

The invention relates to the technical field of lenses. The invention discloses an optical imaging lens which comprises eleven lenses and a diaphragm arranged between the fourth lens and the fifth lens. The first lens and the seventh lens are convex-concave lenses with positive refractive indexes; the second lens and the sixth lens are convex-concave lenses with negative refractive indexes; the third lens is a concave lens with negative refractive index; the fourth lens, the fifth lens and the eleventh lens are convex lenses with positive refractive indexes; the eighth lens is a plano-convex lens with a positive refractive index; the ninth lens is a concave-convex lens with a negative refractive index; the tenth lens is a concave-convex lens with a positive refractive index; the sixth lensand the seventh lens are glued to each other, and the eighth lens and the ninth lens are glued to each other. The optical imaging lens has the advantages of small chromatic aberration, small distortion and high imaging quality; the high and low temperature defocusing is small or no defocusing is caused; light transmission is high; and the total length is short.

Description

technical field [0001] The invention belongs to the technical field of lenses, and in particular relates to an optical imaging lens. 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 large edge chromatic aberration and poor color reproduction; when used in high and low temperature environments, the out-of-focus is serious; the distortion contro...

AI Technical Summary

Problems solved by technology

However, the optical imaging lenses currently used in intelligent transportation systems have large edge chromatic aberration and poor color reproduction; when used in high and low temperature environments, the out-of-focus is serious; the distortion control is not good, the object image becomes larger, and the restoration is poor; The light is generally relatively small, and in low-light environments, the incoming light is low, and the shooting picture is dark; and the total length is long, which can no longer meet the increasing requirements of intelligent transportation systems, and urgently needs to be improved.

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