Optical lens assembly

Abstract

The invention relates to the field of optical devices, in particular to an optical lens assembly used for a high-definition camera module with the specification being 1/2.5 inch and 18 million pixels, and the camera module belongs to the field of electronic products of vehicle visual systems. The optical lens assembly comprises a diaphragm, a lens set and a glass optical filter, wherein the lens set comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a fifth lens, a sixth lens, a seventh and an eighth lens which are sequentially arranged on the same optical axis in the direction of an object, the surface of the seventh lens is an aspherical surface, the aspherical surface formula is consulted on the specification, and the lenses of the optical lens assembly are matched so that the height of each lens can be effectively reduced. Meanwhile, light is refracted through a high-order curved surface by adopting the aspherical lens, it can be guaranteed that the light is focused to a point accurately, various aberrations of the light are effectively eliminated, imaging quality of the lenses is guaranteed, the aberrations in a lens system can be reduced by arranging the diaphragm in the middle, quality of the lenses is guaranteed, and manufacturing cost is reduced.

Description

technical field [0001] The invention relates to the field of optical devices, in particular to an optical lens assembly used for a high-definition 1 / 2.5-inch 18 million-pixel camera group in the field of electronic products of automotive visual systems. Background technique [0002] The rapid development of the economy has improved people's living standards, and there are more and more cars, which has caused great pressure on road management. Avoid more accidents and make people travel safer. The driver can understand the situation inside and outside the car more timely and clearly. In this process, the vehicle-mounted monitoring is also continuously upgraded, from the previous single-vehicle upgrade to 3G monitoring, and even 4G monitoring in the future, which can realize remote monitoring, and at the same time, can have a comprehensive understanding of the driving situation and grasp information at any time. For example, using high-resolution cameras, not only can licens...

AI Technical Summary

Problems solved by technology

At the same time as the development of high-definition, the high-pixel lens as one of the core components also shows high market growth, but the multi-lens components in the camera module currently used in the electronic product field of the automotive visual system, such as Chinese patent 201210180293, are not There are defects such as poor imaging effect, small field of view, small aperture and high cost

Images