Super-surface array structure and application thereof in image display multiplexing

Abstract

The invention belongs to the technical field of micro-nano optical technology, and discloses a super-surface array structure and an application thereof in image display multiplexing, the super-surfacearray structure comprises a substrate and a nano-brick array; when the polarization direction of incident ray polarized light is along a long axis direction of the nano-brick array, the reflectivityis the highest; and when the polarization direction of incident ray polarized light is along a short axis direction of the nano-brick array, the transmissivity is the highest. The application comprises: in the case that the polarization direction of the incident ray polarized light is fixed, each nano-brick is used as a pixel point, and each pixel point displays different gray levels by adjustingthe steering angle of each nano brick, so as to realize the display of a gray level image. In addition, in the case that the steering angle of the nano-brick is fixed, the nano-brick array displays different binary images by adjusting the polarization direction of the incident ray polarized light, so as to realize the display multiplexing of the binary images. By adopting the super-surface array structure and the application thereof in image display multiplexing disclosed by the invention, the problems of high regulation and control difficulty of super-surfaces for realizing gray level image display and multiplexing, a complicated nano array structure and difficulty in processing in the prior art are solved.

Description

technical field [0001] The invention relates to the field of micro-nano optics technology, in particular to a metasurface array structure and its application in image display multiplexing. Background technique [0002] Metasurface is a sub-wavelength layered material that can flexibly and effectively control the characteristics of light wave polarization, amplitude, phase, polarization mode, and propagation mode. After being designed, the metasurface can realize many functions of traditional optical devices, and at the same time, it also has the characteristics of high integration, high efficiency, and multiple degrees of freedom that traditional optical devices lack. [0003] In recent years, metasurfaces have become a hot spot in academic research. Many researchers have realized the display of grayscale images and the multiplexing of image displays by changing the polarization state of incident light, the incident angle, and the size parameters of nanobricks. However, the...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a metasurface array structure and its application in image display multiplexing, which solves the problem of the difficulty in controlling the grayscale image display and multiplexing of the metasurface in the prior art, the complexity of the nanoarray structure, and the difficulty processing problem

Images