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

An array structure and image display technology, applied in the field of micro-nano optics, can solve the problems of high difficulty in metasurface control, difficult processing, complex nanoarray structure, etc., and achieve the effect of simple structure, easy processing, and low control difficulty

Active Publication Date: 2019-10-25
WUHAN UNIV
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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 difficult

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

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[0037] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific implementations.

[0038] See Figure 1-Figure 2 This embodiment provides a super-surface array structure including: a substrate 2 on which a nano-tile array is arranged; the nano-tile array includes a plurality of nano-tiles 1 of uniform size arranged periodically. The distance between the center points of adjacent nano-tiles 1 is the same; the substrate 2 and the nano-tiles 1 are of sub-wavelength size, and the nano-tiles 1 are rectangular parallelepiped.

[0039] The size parameters of the nano-bricks are optimized by electromagnetic simulation software, and the optimized nano-brick array can realize the function of a miniature polarizer. At the selected working wavelength, when the polarization direction of the incident ray is along the long axis of the nano-tile 1, th...

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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...

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Application Information

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IPC IPC(8): G02B5/30
CPCG02B5/30
Inventor 李子乐周楠邓娟李嘉鑫梁聪玲任仁远郑国兴
Owner WUHAN UNIV
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