Optical lens

Abstract

The invention provides an optical imaging lens. The optical lens comprises first, second, third, fourth and fifth lens bodies, wherein the focal power of the first lens body is negative; the focal power of the second lens body is positive; the third and fourth lens bodies form an achromatic lens group; and the focal power of the fifth lens body is positive, and the fifth lens body includes at least one aspheric surface.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to an optical lens for optical imaging. Background technique [0002] Most of the existing indoor monitoring imaging systems or vehicle-mounted imaging systems, especially the front imaging systems, use refractive imaging. In actual imaging, the object image obtained by the refraction and imaging of the light emitted by an object point through the optical lens of the refraction imaging system will be subject to various factors that may cause aberrations, such as spherical aberration, coma aberration, astigmatism , image field curvature and distortion and other factors. [0003] In order to obtain imaging effects with large aperture, high pixels, and small distortion, an achromatic lens is needed to help reduce chromatic aberration. Common achromatic lenses generally consist of two singlet lenses combined with opposite chromatic aberration properties, such as cemented lense...

AI Technical Summary

Problems solved by technology

[0005] At present, the wide-angle indoor monitoring and vehicle-mounted camera lenses on the market cannot meet the requirements of low cost and miniaturization to achieve high-pixel, small distortion, and large-aperture imaging

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