Optical imaging lens and imaging equipment

Abstract

The invention discloses an optical imaging lens and imaging equipment. The optical imaging lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a diaphragm, a fifth lens, a sixth lens and a seventh lens from an object side to an imaging surface along an optical axis. The first lens has positive focal power, the object side surface is a convex surface, and the image side surface is a concave surface or a plane; the second lens has negative focal power, and the image side surface of the second lens is a concave surface; the third lens and the fourth lens form an achromatic balsaming lens group, one lens is a positive focal power lens, and the other lens is a negative focal power lens; the fifth lens has positive focal power, and the object side surface and the image side surface of the fifth lens are convex surfaces; the sixth lens has negative focal power; the seventh lens has positive focal power, and the object side surface of the seventh lens is a convex surface; the seven lenses are all glass lenses, and the optical imaging lens at least comprises an aspheric lens. The optical imaging lens at least has the characteristics of large aperture, high resolution and high imaging quality.

Description

technical field [0001] The invention relates to the technical field of imaging lenses, in particular to an optical imaging lens and imaging equipment. Background technique [0002] With the vigorous development of the automobile industry, automation and in-vehicle monitoring have begun to develop rapidly. As a key component of the automatic driving assistance system, the on-board camera has also ushered in rapid development. Through the front-view, rear-view, surround-view and other on-board cameras, it can Obtain all-round information inside and outside the vehicle to help the driver make correct driving behaviors. Therefore, the adaptability of the lens to the environment and imaging stability become the safety guarantee during the driving of the car. Vehicle lenses not only need to be used in various environments such as high and low temperature conditions, acid and alkali erosion conditions, but also need to be used in low-light and dark conditions. In these occasions, t...

AI Technical Summary

Problems solved by technology

[0003] However, the existing optical lenses on the market generally have disadvantages such as poor long-distance imaging and unclear peripheral field of view imaging, which leads to poor recognition of long-distance targets and cannot meet the needs of vehicle monitoring systems.

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