Optical lens

Abstract

The invention relates to an optimal lens. The optical lens sequentially comprises a front lens group, a diaphragm element and a rear lens group from an object space to an image space, wherein the front lens group has positive focal power; the rear lens group has positive focal power; the front lens group sequentially comprises a crescent first lens and a double-convex second lens from the object space to the image space; the crescent first lens has negative focal power; a concave surface of the crescent first lens faces the image space; the double-convex second lens has positive focal power; the rear lens group sequentially comprises a double-concave third lens, a crescent fourth lens and a balsaming lens; the double-concave third lens has negative focal power; the crescent fourth lens has positive focal power; a concave surface of the crescent fourth lens faces the object space; the balsaming lens consists of a fifth lens and the sixth lens. The requirements of high pixel, small distortion, large aperture, high light transmitting performance and accordance with high definition are met under the conditions of low cost and small miniaturization are realized; various aberrations of an optical system are effectively corrected; meanwhile, perfect imaging definition can be kept in the temperature of -40DEGC to 85DEG C; the optical lens is specially suitable for monitoring or vehicle-mounted camera systems considering daytime and nighttime or poor illuminating conditions.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to an optical lens. Background technique [0002] With the development of active safety in the automotive industry, the requirements for vehicle front-view cameras continue to increase. In particular, the limitation of camera assembly space makes the trend of lens miniaturization increasingly obvious. Under the premise of keeping lens distortion small, megapixels, and large aperture, the total length of the lens should be as short as possible. At the same time, it has low cost and can maintain perfect imaging clarity in the temperature range of -40°C to +85°C. [0003] The wide-angle indoor monitoring and vehicle camera lenses currently on the market cannot realize the miniaturization of the lens under the premise of low cost, high pixel, small distortion, and large aperture imaging. Contents of the invention [0004] The purpose of the present invention is to propose a...

AI Technical Summary

Problems solved by technology

[0003] At present, the wide-angle indoor monitoring and vehicle camera lenses on the market cannot realize the miniaturization of the lens under the premise of low cost, high pixel, small distortion, and large aperture imaging.

Images