Optical lens and preparation method thereof

Abstract

The invention provides an optical lens and a preparation method thereof, and relates to the technical field of surface microstructure processing. The optical lens comprises a transparent base material, and a micropore structure and / or a micro-pillar structure is arranged on the surface of the transparent base material. When incident light is irradiated on the micropore structure on the surface ofthe transparent base material, the incident light is captured by the micropore structure, the incident light is reflected on an inner wall of the micropore structure for multiple times, and then is emitted from the other surface of the transparent base material, thereby achieving the effect of reducing reflection and improving transmission; and when the incident light is irradiated on the micro-pillar structure on the surface of the transparent base material, the incident light can enter the micro-pillar structure and is reflected in the micro-pillar structure for multiple times, and then is emitted from the other surface of the transparent base material, thereby achieving the effect of reducing reflection and improving transmission. Furthermore, according to the principle of improving transmission and reducing reflection of the micropore structure or the micro-pillar structure and the verification of experiments, the optical lens provided by the embodiment of the invention can achievethe effect of improving transmission and reducing reflection within a wider range.

Description

technical field [0001] The invention relates to the technical field of surface microstructure treatment, in particular to an optical lens and a preparation method thereof. Background technique [0002] In the prior art, the anti-reflection or anti-reflection effect of the transparent substrate is mainly realized by means of coating. Using an optical coating machine, magnetron sputtering and other coating methods are used to superimpose layers of high-refractive index film layers and low-refractive index film layers, and finally form an anti-reflection film layer on the surface of the material, thereby achieving anti-reflection on transparent materials. Inverse, anti-reflection effect. [0003] Although the traditional coating method has better reflection reduction and anti-reflection effects, it can only cover a narrow bandwidth band. Basically, it can only cover the wavelength range of 380-1100nm at present, but with the increase of bandwidth , the coating process is also...

AI Technical Summary

Problems solved by technology

[0003] Although the traditional coating method has better reflection reduction and anti-reflection effects, it can only cover a narrow bandwidth band. Basically, it can only cover the wavelength range of 380-1100nm at present, but with the increase of bandwidth , the coating process is also more difficult

like figure 1 As shown, the anti-reflection effect of the coating method is only significantly improved within the coverage bandwidth of the coating, while in other bandwidth ranges, due to the coating itself, the anti-reflection effect is worse than the original transparent substrate itself.

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