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Improved Manufacturing of Virtual and Augmented Reality Systems and Components

A diffractive optical element and substrate technology, applied in optical elements, optical elements, instruments, etc., can solve problems such as unstable imaging, human visual system adaptability conflict, eye fatigue, etc., achieve uniform base layer, increase angle, The effect of increasing the field of view of the eyepiece

Active Publication Date: 2021-01-15
MAGIC LEAP INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the adaptive response to a displayed point does not correspond to the virtual depth at that point, as determined by convergence and binocular depth cues for stereopsis, the human visual system may experience adaptive conflict, resulting in unstable imaging, deleterious Eye strain, headaches, and, in the absence of adaptive information, an almost total non-existence of surface depth

Method used

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  • Improved Manufacturing of Virtual and Augmented Reality Systems and Components
  • Improved Manufacturing of Virtual and Augmented Reality Systems and Components
  • Improved Manufacturing of Virtual and Augmented Reality Systems and Components

Examples

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Embodiment Construction

[0048] According to some embodiments of the invention, a diffractive structure comprising an underlying / intermediate layer between the waveguide substrate and the top grating surface is employed. The top grating surface includes a first material corresponding to a first index of refraction value, the underlying layer includes a second material corresponding to a second index of refraction value, and the substrate includes a material corresponding to a third index of refraction value. third material.

[0049] An advantage of this approach is that proper selection of the relative refractive indices for the three layers allows the structure to obtain a larger field of view for a wider range of incident light, since the lowest total internal reflection angle increases with increasing refractive index. large and small. Diffraction efficiency can be increased, allowing "brighter" light output to the display of the image viewing device.

[0050] Combinations can be used where an un...

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Abstract

An improved diffractive structure for 3D display systems is disclosed. The improved diffractive structure includes an intermediate layer between the waveguide substrate and the top grating surface. The top grating surface includes a first material corresponding to a first index of refraction value, the underlying layer includes a second material corresponding to a second index of refraction value, and the substrate includes a third material corresponding to a third index of refraction value. According to additional embodiments, improved methods are provided to achieve deposition of imprinting materials on substrates, which allow very precise distribution and deposition of different imprinting patterns on any number of substrate surfaces.

Description

technical field [0001] The present disclosure relates to virtual reality and augmented reality imaging and visualization systems. Background technique [0002] Modern computing and display technologies have facilitated the development of systems for so-called "virtual reality" or "augmented reality" experiences, in which a digitally reproduced image, or a portion thereof, is presented to a user in a manner that appears or can be perceived as lifelike. Virtual reality or "VR" situations generally involve presenting digital or virtual image information without being able to see the actual real-world visual input; augmented reality or "AR" situations generally involve presenting digital or virtual image information as a visual augmentation of the actual world around the user . For example, refer to figure 1 , depicts an augmented reality scene (4) in which a user of AR technology sees a park-like real-world setting (6) featuring people, trees, buildings in the background, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/00G02B5/18
CPCG02B27/017G02B5/1857G02B27/4205G02B2027/0178B29D11/00355B29D11/00432B29D11/00682G02B5/1823G02B5/1842G02B5/1852G02B27/0172G02B2027/0112
Inventor R·D·泰克尔斯特M·A·克鲁格P·M·格列柯B·T·朔文格特
Owner MAGIC LEAP INC
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