Manufacturing for virtual and augmented reality systems and components
First Claim
1. A method for manufacturing an eyepiece comprising a first diffractive optical element, comprising:
- depositing a first layer onto a first substrate, whereinthe first layer comprises a first portion and a second portion, the first portion is deposited to have a first depth onto a first region on the first substrate, the first portion has a first optical index, the second portion is deposited to have a second depth onto a second region on the first substrate, and the second portion has a second optical index different from the first optical index;
identifying a template having an imprint pattern formed thereon, the template comprising a first set of depth structures and a second set of depth structures, the first set of depth structures corresponding to the first depth of the first portion, and the second set of depth structures corresponding to the second depth of the second portion; and
imprinting the imprint pattern into the first and the second portions on the first substrate with the template, whereinthe imprint pattern comprises a diffraction pattern for the first diffractive optical element,the first portion is deposited to have the first depth according to at least a first optical function,the second portion is deposited to have the second depth according to at least a second optical function, before imprinting, andthe first depth is different from the second depth.
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Accused Products
Abstract
Disclosed is an improved diffraction structure for 3D display systems. The improved diffraction structure includes an intermediate layer that resides between a waveguide substrate and a top grating surface. The top grating surface comprises a first material that corresponds to a first refractive index value, the underlayer comprises a second material that corresponds to a second refractive index value, and the substrate comprises a third material that corresponds to a third refractive index value. According to additional embodiments, improved approaches are provided to implement deposition of imprint materials onto a substrate, which allow for very precise distribution and deposition of different imprint patterns onto any number of substrate surfaces.
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Citations
19 Claims
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1. A method for manufacturing an eyepiece comprising a first diffractive optical element, comprising:
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depositing a first layer onto a first substrate, wherein the first layer comprises a first portion and a second portion, the first portion is deposited to have a first depth onto a first region on the first substrate, the first portion has a first optical index, the second portion is deposited to have a second depth onto a second region on the first substrate, and the second portion has a second optical index different from the first optical index; identifying a template having an imprint pattern formed thereon, the template comprising a first set of depth structures and a second set of depth structures, the first set of depth structures corresponding to the first depth of the first portion, and the second set of depth structures corresponding to the second depth of the second portion; and imprinting the imprint pattern into the first and the second portions on the first substrate with the template, wherein the imprint pattern comprises a diffraction pattern for the first diffractive optical element, the first portion is deposited to have the first depth according to at least a first optical function, the second portion is deposited to have the second depth according to at least a second optical function, before imprinting, and the first depth is different from the second depth. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification