Miniature aspheric fisheye lens capable of being used for on-vehicle monitoring

Abstract

The invention relates to a miniature aspheric fisheye lens capable of being used for on-vehicle monitoring. In an optical axis direction, the miniature aspheric fisheye lens comprises a front-set optical system with negative focal power, and a back-set optical system with positive focal power, wherein the front-set optical and the back-set optical system are successively arranged from an object side to an image side. The front-set optical system comprises a first lens with negative focal power, a second lens with negative focal power, and a third lens with negative focal power, wherein the first lens, the second lens and the third lens are successively arranged in the optical axis direction from the image side to the object side. The back-set optical system comprises a fourth lens with positive focal power, a fifth lens with negative focal power, an aperture diaphragm, a sixth lens with negative focal power, a seventh lens with positive focal power, an eighth lens with positive focal power, a ninth lens with negative focal power, a tenth lens with positive focal power, and an optical filter, wherein the fourth lens, the fifth lens, the aperture diaphragm, the sixth lens, the seventh lens, the eighth lens, the ninth lens, the tenth lens and the optical filter are successively arranged in the optical axis direction from the object side to the image side. The miniature aspheric fisheye lens has advantages of high imaging quality, small size, compact structure, easy processing, easy mounting, etc.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to a miniature aspheric fisheye lens that can be used for vehicle monitoring. Background technique [0002] In recent years, with the development of society, the requirements for security and monitoring in various fields have been continuously improved; especially at present, people's demand for cars is increasing, making vehicle monitoring more and more important. However, the vehicle-mounted lenses currently on the market are mainly of low resolution, especially in the case of weak light, the images taken are not good enough in terms of overall clarity or sharpness of the picture, which is far from meeting the requirements of vehicle-mounted monitoring. clarity. Lens is the core of vehicle surveillance imaging equipment. With the development of the security industry and the continuous improvement of monitoring technology, the demand and quality of lenses are also increasi...

AI Technical Summary

Problems solved by technology

Existing vehicle-mounted lenses cannot meet the high-quality requirements of vehicle-mounted monitoring in terms of definition. At the same time, the size of the lens is relatively large and the field of view is relatively small, making them unsuitable for application in vehicle-mounted monitoring.

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