a camera lens

Abstract

The invention provides an image capture lens, comprising three plastic lenses. The surface of each lens is an aspheric surface. Along a light incident direction, the lens comprises a first plus lens, a second plus lens, and a third negative lens. The first plus lens has plus focal power, the second plus lens has plus focal power, and the third plus lens has negative focal power. Specifically, the first plus lens is provided with a first surface protruding to an object side and a second surface dented facing an image side. The second plus lens is provided with a third surface dented facing the object side and a fourth surface protruding to the image side. The third negative lens is provided with a fifth surface protruding to the object side, and a sixth surface dented facing the image side. The lens shape is easy to process and form since the three lenses are arranged reasonably according to each component, thereby satisfying requirements of large aperture and high relative brightness. In addition, the lens is simple in structure, good in tolerance, and reduced in production process cost.

Description

technical field [0001] The invention relates to the technical field of optical lens design, in particular to an imaging lens. Background technique [0002] At present, imaging lenses are widely used in the market, and gradually tend to be miniaturized and lightweight for the convenience of people to use, which will greatly reduce the size of the imaging lens used in the above-mentioned image capture device. In addition, in addition to miniaturization and light weight, higher optical performance is also required to achieve high-resolution and high-contrast display. Therefore, miniaturization and high optical performance are two indispensable elements for imaging lenses. However, in order to achieve the purpose of high optical performance, the imaging lens used by the current image capture device is nothing more than using multiple lenses, and even more than ten lenses, which can greatly improve the performance of the lens while being unable to effectively achieve miniaturiza...

AI Technical Summary

Problems solved by technology

However, in order to achieve the purpose of high optical performance, the imaging lens used by the current image capture device is nothing more than using multiple lenses, and even more than ten lenses, which can greatly improve the performance of the lens while being unable to effectively achieve miniaturization. cost of production

In addition, in order to achieve the miniaturization of the imaging lens, only using less than five lenses, but the optical performance cannot be effectively improved

Based on the above, it can be seen that the known imaging lenses are still not perfect, and there is still room for improvement

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