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Dynamic color holographic device based on metasurface and manufacturing method thereof

A technology of metasurface and manufacturing method, which is applied in the direction of instruments, optical components, optics, etc., can solve problems affecting reconstructed images, etc., and achieve the effect of simple tuning process, simple processing, and stable performance

Pending Publication Date: 2021-11-16
HUNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, unnecessary diffracted light will inevitably be generated during the diffraction process, which will affect the quality of the reconstructed image. From the above, it is challenging to realize color holography

Method used

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  • Dynamic color holographic device based on metasurface and manufacturing method thereof
  • Dynamic color holographic device based on metasurface and manufacturing method thereof
  • Dynamic color holographic device based on metasurface and manufacturing method thereof

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Embodiment

[0025] figure 1 It is a schematic diagram of the composition of the dynamic micro-nano integrated device based on the metasurface of the present invention. Among them, 1 is the bottom transparent dielectric substrate, 2 is the first layer of indium tin oxide transparent electrode (ITO), 3 is the first layer of photo-alignment layer, 4 is the nematic liquid crystal, 5 is the second layer of photo-alignment layer , 6 is the second layer of indium tin oxide transparent electrode, 7 is the top transparent dielectric substrate, 8 is the optical glue, 9 is the bottom transparent dielectric substrate in the metasurface, and 10 is the dielectric nanocolumn.

[0026] figure 2 It is a schematic diagram of realizing dynamic micro-nano integrated device hologram switching in the present invention. Among them, 11 is RGB three kinds of incident linearly polarized light, 12 is corresponding to outgoing left-handed circularly polarized light, 13 is the reconstructed hologram, 14 is RGB thr...

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Abstract

The invention discloses a dynamic color holographic device based on a metasurface and a manufacturing method of the dynamic color holographic device. The dynamic color holographic device is composed of a liquid crystal layer and a metasurface layer. The manufacturing method of the dynamic color holographic device mainly comprises a design and manufacturing method of a super-structure surface and a packaging method of liquid crystal. According to the invention, the metasurface is combined with the polarization regulation and control function of the liquid crystal, so that the dynamic switching of color holographic patterns of the device under the condition of incidence of the same linearly polarized light is realized. Through careful design of the nano-columns on the surface of the super-structure, independent control of wavelengths of different colors can be naturally realized, so that holographic images corresponding to different wavelengths can be imaged at the same position, and color holography is realized. An electric control tuning mode is adopted, and the tuning process is simple; according to the method, phase matching is carried out on the nano-structure units at all positions on the super-structure surface by using the particle swarm optimization algorithm, and compared with other matching algorithms, the method is simpler and easier to implement and does not have adjustment of many parameters.

Description

technical field [0001] The invention relates to a dynamic color holographic device based on a metasurface and a manufacturing method thereof, belonging to the technical field of color holographic display. Background technique [0002] Color holographic display is a three-dimensional display technology that can vividly record and reproduce color holographic images. Its basic principle is to generate a color holographic reproduction image by superimposing three monochromatic holographic images. Different from monochromatic holography, color holography needs to ensure that the holographic images generated by monochromatic light of different wavelengths can be superimposed at the same position, but because holographic display uses diffraction imaging, the imaging positions of different wavelengths of light are different. Therefore, it is necessary to take special measures to allow the monochromatic holographic images to be superimposed at the same position. At the same time, be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/32G02F1/1341G02B1/00G03H1/22G03H1/26
CPCG02B5/32G02F1/1341G02B1/002G03H1/26G03H1/2286
Inventor 胡跃强李奥凌欧香念李苓段辉高
Owner HUNAN UNIV
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