Optical lens

Abstract

The invention discloses an optical lens. The optical lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens from an object side to an imageside along an optical axis. The first lens can have negative focal power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface; the second lens can have positive focal power, and the object side surface of the second lens is a convex surface; the fifth lens can have positive focal power, and the object side surface and the image side surface of the fifth lens are convex surfaces; the sixth lens can have negative focal power, and the image side surface of the sixth lens is a concave surface; and the third lens and thefourth lens can be mutually glued to form a glued lens. According to the optical lens provided by the invention, at least one of the beneficial effects of high resolution, miniaturization, small-caliber front end, long coking, large field angle, small principal ray angle, long back focal length and the like can be realized.

Description

technical field [0001] The application relates to an optical lens, and more particularly, the application relates to an optical lens including six lenses. Background technique [0002] As the "eye" of the car, the vehicle lens plays a very important role in the vehicle-mounted assisted driving system. With the rapid development of science and technology, people's requirements for the vehicle lens are getting higher and higher. High resolution, miniaturization, and stability in different working environments have always been the technical bottlenecks of automotive lenses. At present, the popular application of automotive lenses has made people's requirements for the resolution of automotive lenses higher and higher. From the original megapixels, In the direction of 2M, the popularity is continuously improved. [0003] However, as the resolution increases, the corresponding lens volume and weight will increase, and the contradiction between lens resolution and miniaturization...

AI Technical Summary

Problems solved by technology

[0003] However, as the resolution increases, the volume and weight of the corresponding lens will increase, and the contradiction between lens resolution and miniaturization becomes increasingly prominent. The conventional front-view vehicle lens has a large front port diameter, a small angle, and a small field of view. If the overall length is shortened, the back focus of the whole system will become smaller, resulting in larger CRA, which cannot perfectly match the chip, and is not conducive to actual installation

At present, vehicular optical lenses with more than one million pixels usually use 6 lenses. Although the resolution is significantly improved compared with 5 lenses, the increase in the number of lenses makes it more difficult to miniaturize the lens. For lenses that work in harsh environments and have limited installation space, on the basis of ensuring the stability in different working environments, further improving the direction of miniaturization and high resolution has become the mainstream trend of vehicle lens development

Images