Vehicle-mounted optical lens for monitoring

Abstract

The invention relates to a vehicle-mounted optical lens for monitoring. The vehicle-mounted optical lens for monitoring comprises a lens barrel, wherein a first lens, a second lens, a third lens, a diaphragm and a fourth lens which are sequentially arranged in the lens barrel from object space to image space. The first lens is a falcate spherical lens, the second lens is falcate aspheric lens, a first surface of the second lens facing the object space is a hyperbolic curve aspheric surface, and a second surface of the second lens facing the image space is an oval aspheric surface. The third lens is a biconvex spherical lens. The fourth lens is a falcate aspheric lens, and double surfaces of the fourth lens are hyperbolic curve aspheric surfaces. The vehicle-mounted optical lens for monitoring overcomes the shortcomings of the prior art, is high in pixel, ultra-wide in field, small in distortion and fog-transmitting, can be used for monitoring and can be used all day.

Description

【Technical field】 [0001] The invention relates to an optical lens, in particular to an ultra-wide-angle, small-distortion, high-pixel fog-permeable day-night optical lens applied to monitoring and vehicle-mounted systems. 【Background technique】 [0002] At present, the large or medium field of view lenses for security and vehicles generally have such shortcomings: large lens distortion, large size, low resolution, and cannot be used in day and night, etc. Now there are only a few lenses that improve a certain aspect at the expense of other aspects. For example, in order to achieve high pixels, the distortion and volume must be enlarged. The captured image is either the overall clarity or the realness of the image. Performance and other aspects are not ideal, or the images taken during the day are clear, and the images taken at night are particularly blurred, which is far from meeting the image clarity and authenticity required by monitoring and vehicle-mounted lenses. Moreov...

AI Technical Summary

Problems solved by technology

[0004] The invention overcomes the deficiencies of the prior art, such as large distortion, large volume, low pixels, impenetrable fog, and cannot be used day and night, thereby providing a high-pixel, ultra-wide-angle, small-distortion, fog-penetrating, day-and-night dual-purpose vehicle that can be used for monitoring and vehicle-mounted optical lens

Images