optical lens

Abstract

The utility model provides an optical imaging camera lens, it includes first lens, wherein these first lens have negative optical power, second lens, wherein these second lens have positive refractive power, third lens, fourth lens, wherein an achromatic lens group is formed with these fourth lens to these third lens, with one the 5th lens, wherein the 5th lens have positive refractive power, and the 5th lens have 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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