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Waveguide display lens and augmented reality glasses

An augmented reality and lens technology, applied in optics, instruments, optical components, etc., can solve problems such as multi-color diffraction efficiency imbalance, chromatic aberration, etc., and achieve the effect of eliminating the diffraction efficiency imbalance

Pending Publication Date: 2021-04-30
SVG TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to expand the field of view, it has been expanded horizontally or vertically. However, this expansion method will have unbalanced polychromatic diffraction efficiency and produce obvious chromatic aberration

Method used

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  • Waveguide display lens and augmented reality glasses
  • Waveguide display lens and augmented reality glasses
  • Waveguide display lens and augmented reality glasses

Examples

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Effect test

no. 1 example

[0027] figure 1 It is a structural schematic diagram of the waveguide display lens of the present invention, figure 2 It is a schematic diagram of the light transmission of the waveguide display lens of the present invention, such as figure 1 and figure 2 As shown, the waveguide display lens includes a lens body 10, and the lens body 10 is provided with an in-coupling area 11, an out-coupling area 12, a left turning area 13 and a right turning area 14, and the coupling-in area 11, the out-coupling area 12, and the left turning area 13 and the right turning area 14 are provided with a nanostructure 15 that diffracts light, the coupling-in area 11 and the out-coupling area 12 are arranged between the left turning area 13 and the right turning area 14, the coupling-in area 11 is used to receive image light, The image light is symmetrically diffracted by the nanostructure 15 to form left diffracted light and right diffracted light. The left diffracted light enters the outcoupl...

no. 2 example

[0052] The present invention also relates to augmented reality glasses 20, which include the above-mentioned waveguide display lens.

[0053] Figure 7 is a structural schematic diagram of the augmented reality glasses of the present invention, such as Figure 7 As shown, the augmented reality glasses 20 also include a frame 21 and two supporting legs 22, the two supporting legs 22 are arranged symmetrically, one end of the supporting legs 22 is connected to the frame 21, two waveguide display lenses are arranged on the frame 21, and the supporting legs 22 is provided with micro-projection system 23. In this embodiment, the left and right two independent micro-projection systems 23 output different parallax images, which can realize stereoscopic three-dimensional display.

[0054] Further, the micro-projection system 23 includes a light source and a functional film, the functional film is provided with a focusing imaging nanostructure 15, the light emitted by the light sourc...

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Abstract

A waveguide display lens comprises a lens body, a coupling-in area, a coupling-out area, a left turning area and a right turning area are arranged on the lens body, nanostructures of diffracted light are arranged in the coupling-in area, the coupling-out area, the left turning area and the right turning area, and the coupling-in area and the coupling-out area are arranged between the left turning area and the right turning area. The coupling-in area is used for receiving image light, the image light is symmetrically diffracted by the nanostructure to form left diffracted light and right diffracted light, the left diffracted light is diffracted by the left turning area to enter the coupling-out area, the right diffracted light is diffracted by the right turning area to enter the coupling-out area, and the left diffracted light and the right diffracted light are emitted from the coupling-out area. The waveguide display lens has a symmetrical diffraction characteristic, can realize superposition of left and right fields of view, expands the field of view, and eliminates imbalance of diffraction efficiency. The invention also relates to augmented reality glasses.

Description

technical field [0001] The invention relates to the field of augmented reality display technology, in particular to a waveguide display lens and augmented reality glasses. Background technique [0002] Augmented reality (AR) technology is a new technology that "seamlessly" integrates real world information and virtual world information. It not only shows real world information, but also displays virtual information at the same time. The two kinds of information complement each other. overlay. In visual augmented reality, users use the helmet display to recombine the real world with computer graphics, and then they can see the real world surrounding it. Most of the current mainstream near-eye augmented reality display devices use the optical waveguide principle. In order to expand the field of view, it has been expanded horizontally or vertically. However, this expansion method will have unbalanced polychromatic diffraction efficiency and produce obvious chromatic aberratio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/01G02B5/18
CPCG02B5/18G02B27/0172G02B2027/0178G02B27/01
Inventor 罗明辉乔文李瑞彬成堂东陈林森
Owner SVG TECH GRP CO LTD
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