Metasurface micro-nano near-eye display based on retina display

A near-eye display and meta-surface technology, applied in instruments, optics, lenses, etc., can solve problems such as the inability to meet the requirements of near-eye display light and thin, the safety of laser focusing, etc., to achieve large field of view display, reduce exit pupil effect of distance

Pending Publication Date: 2022-03-29
SOUTHEAST UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a super-surface micro-nano near-eye display based on retinal display, so as to solve the technical problem that the traditional retinal display technology needs to focus the laser on the optical center of the lens for safety and cannot meet the light and thin requirements of near-eye display.

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  • Metasurface micro-nano near-eye display based on retina display
  • Metasurface micro-nano near-eye display based on retina display
  • Metasurface micro-nano near-eye display based on retina display

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[0064] The structure of the supersurface micro-nano near-eye display in this embodiment is as follows figure 1 and figure 2 shown. Where the pixel size of the transparent micro-display image source 3 is 9 μm, the size of the single pixel nano-array of the metasurface micro-nano focusing lens group 31 and the metasurface micro-nano compensation lens group 32 is also 9 μm. The wavelength of red light is designed to be λ R =640nm, the wavelength of blue light is designed as λ G =525nm, the wavelength of blue light is designed as λ B = 440nm. The base layer and protective layer materials of the metasurface micro-nano focusing lens group 31 and the metasurface compensation lens group 32 are all SiO 2 , with a thickness of 500 μm, the material of the metasurface micro-nano focusing lens layer 5 and the metasurface micro-nano compensation lens layer 8 is TiO 2 . The TiO 2 The length of the nanopillar array varies from 300nm to 700nm according to the wavelength and phase desi...

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Abstract

The invention discloses a metasurface micro-nano near-eye display based on retina display. Comprising a transparent micro-display image source, a metasurface micro-nano focusing lens group and a metasurface micro-nano compensation lens group. The metasurface micro-nano focusing lens group comprises a metasurface micro-nano focusing substrate layer, a metasurface micro-nano focusing lens layer and a metasurface micro-nano focusing protection layer. The metasurface micro-nano compensation lens group comprises a metasurface micro-nano compensation substrate layer, a metasurface micro-nano compensation lens layer and a metasurface micro-nano compensation protection layer. A micro-nano lens array formed by the metasurface structure is combined with a transparent micro display image source to replace a laser light source and a heavy optical lens in the original retina display technology, so that ultra-thin and ultra-clear convergence focusing contradiction-free near-to-eye display is realized.

Description

technical field [0001] The invention belongs to the field of near-eye displays, in particular to a supersurface micro-nano near-eye display based on retina display. Background technique [0002] Near-eye display (NED) is an advanced device that magnifies the image of the micro-display image source through an optical system so that it is directly displayed in front of the user's eyes. The near-eye display subverts the traditional visual experience, and uses a small display device to present a panoramic visual experience with a large field of view. It is small, thin, comfortable, and portable, satisfying people's various fantasies about the future society. [0003] The main technical problem that hinders the development of near-eye displays is the contradiction between convergence and focus. Users who wear NED for a long time will cause visual fatigue and other discomfort problems, which greatly affect the user experience. The retinal display technology has a longer depth of ...

Claims

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Application Information

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IPC IPC(8): G02B27/00G02B27/01G02B3/00G09F9/33
CPCG02B27/0101G02B27/0081G02B3/0037G09F9/33
Inventor 杨兰兰覃涛屠彦王莉莉仲雪飞张宇宁
Owner SOUTHEAST UNIV
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