公开(公告)号：US10942306B2

公开(公告)日：2021-03-09

申请号：US16685505

申请日：2019-11-15

Applicant: Magic Leap, Inc.

Inventor： Shuqiang Yang ,  Vikramjit Singh ,  Kang Luo ,  Nai-Wen Pi ,  Frank Y. Xu, Jr.

IPC: G02B6/00 ,  F21V8/00 ,  G02B25/00 ,  G02B27/00

Abstract: Embodiments of the present disclosure are directed to techniques for manufacturing an eyepiece (or eyepiece layer) by applying multiple, different diffraction gratings to a single side of an eyepiece substrate instead of applying different gratings to different sides (e.g., opposite surfaces) of the substrate. Embodiments are also directed to the eyepiece (or eyepiece layer) that is arranged to have multiple, different diffraction gratings on a single side of the eyepiece substrate. In some embodiments, two or more grating patterns are superimposed to create a combination pattern in a template (e.g., a master), which is then used to apply the combination pattern to a single side of the eyepiece substrate. In some embodiments, multiple layers of patterned material (e.g., with differing refraction indices) are applied to a single side of the substrate. In some examples, the combined grating patterns are orthogonal pupil expander and exit pupil expander grating patterns.

公开(公告)号：US10823894B2

公开(公告)日：2020-11-03

申请号：US16596630

申请日：2019-10-08

Applicant: Magic Leap, Inc.

Inventor： Christophe Peroz ,  Mauro Melli ,  Vikramjit Singh ,  David Jurbergs ,  Jeffrey Dean Schmulen ,  Zongxing Wang ,  Shuqiang Yang ,  Frank Y. Xu ,  Kang Luo ,  Marlon Edward Menezes ,  Michael Nevin Miller

IPC: G02B5/18 ,  G02B6/00 ,  F21V8/00 ,  G06F3/01 ,  G06F3/147 ,  G09G3/00 ,  G09G3/20 ,  G02B27/01 ,  G02B7/00 ,  G02B5/30 ,  G02B27/00 ,  G02B27/28 ,  G02B27/10 ,  H04N9/31 ,  G02C5/16 ,  G02C11/00 ,  G06F1/16 ,  G06F1/20 ,  H05K7/20 ,  G02B6/34 ,  G02B6/293 ,  G02B27/30

Abstract: A method of manufacturing a waveguide having a combination of a binary grating structure and a blazed grating structure includes cutting a substrate off-axis, depositing a first layer on the substrate, and depositing a resist layer on the first layer. The resist layer includes a pattern. The method also includes etching the first layer in the pattern using the resist layer as a mask. The pattern includes a first region and a second region. The method further includes creating the binary grating structure in the substrate in the second region and creating the blazed grating structure in the substrate in the first region.

公开(公告)号：US10481317B2

公开(公告)日：2019-11-19

申请号：US15683706

申请日：2017-08-22

Applicant: Magic Leap, Inc.

Inventor： Christophe Peroz ,  Mauro Melli ,  Vikramjit Singh ,  David Jurbergs ,  Jeffrey Dean Schmulen ,  Zongxing Wang ,  Shuqiang Yang ,  Frank Y. Xu ,  Kang Luo ,  Marlon Edward Menezes ,  Michael Nevin Miller

IPC: G02B5/18 ,  G02B6/00 ,  F21V8/00 ,  G02B5/30 ,  G02B27/00 ,  G02B27/01 ,  G02B27/28 ,  G02B27/10 ,  H04N9/31 ,  G02C5/16 ,  G02C11/00 ,  G06F1/16 ,  G06F1/20 ,  G09G3/00 ,  H05K7/20 ,  G06F3/01 ,  G06F3/147 ,  G09G3/20 ,  G02B7/00 ,  G02B27/30

Abstract: A method of manufacturing a waveguide having a combination of a binary grating structure and a blazed grating structure includes cutting a substrate off-axis, depositing a first layer on the substrate, and depositing a resist layer on the first layer. The resist layer includes a pattern. The method also includes etching the first layer in the pattern using the resist layer as a mask. The pattern includes a first region and a second region. The method further includes creating the binary grating structure in the substrate in the second region and creating the blazed grating structure in the substrate in the first region.

公开(公告)号：US20190137777A1

公开(公告)日：2019-05-09

申请号：US16182309

申请日：2018-11-06

Applicant: Magic Leap, Inc.

Inventor： Shuqiang Yang ,  Vikramjit Singh ,  Kang Luo ,  Nai-Wen Pi ,  Frank Y. Xu

IPC: G02B27/42 ,  G02B5/18

CPC classification number: G02B27/4255 ,  G02B5/1814 ,  G02B27/0081 ,  G02B27/0172 ,  G02B27/4272 ,  G02B2027/0125 ,  G02B2027/0174

Abstract: A method of fabricating a diffractive structure with varying diffractive element depth includes providing a shadow mask having a first region with a first aperture dimension to aperture periodicity ratio and a second region with a second aperture dimension to aperture periodicity ratio less than the first aperture dimension to aperture periodicity ratio. The method also includes positioning the shadow mask adjacent a substrate. The substrate comprises an etch mask corresponding to the diffractive structure. The method further includes exposing the substrate to an etchant, etching the substrate to form diffractive elements adjacent the first region having a first depth, and etching the substrate to form diffractive elements adjacent the second region having a second depth less than the first depth.

公开(公告)号：US20190129178A1

公开(公告)日：2019-05-02

申请号：US16171111

申请日：2018-10-25

Applicant: Magic Leap, Inc.

Inventor： Roy Patterson ,  Chulwoo Oh ,  Ravi Kumar Komanduri ,  Charles Scott Carden ,  Michael Nevin Miller ,  Vikramjit Singh ,  Shuqiang Yang

IPC: G02B27/01 ,  G02F1/29 ,  F21V8/00

Abstract: A display device includes a waveguide assembly comprising a waveguide configured to outcouple light out of a major surface of the waveguide to form an image in the eyes of a user. An adaptive lens assembly has a major surface facing the output surface and a waveplate lens and a switchable waveplate assembly. The switchable waveplate assembly includes quarter-wave plates on opposing sides of a switchable liquid crystal layer, and electrodes on the quarter-wave plates in the volume between the quarter-wave plates. The electrodes can selectively establish an electric field and may serve as an alignment structure for molecules of the liquid crystal layer. Portions of the adaptive lens assembly may be manufactured by roll-to-roll processing in which a substrate roll is unwound, and alignment layers and liquid crystal layers are formed on the substrate as it moves towards a second roller, to be wound on that second roller.

公开(公告)号：US12276825B2

公开(公告)日：2025-04-15

申请号：US18513308

申请日：2023-11-17

Applicant: Magic Leap, Inc.

Inventor： Chulwoo Oh ,  Ravi Kumar Komanduri ,  Vikramjit Singh ,  Shuqiang Yang ,  Frank Y. Xu

IPC: F21V8/00 ,  G02B25/00 ,  G02B27/01 ,  G02B6/26

Abstract: A method of fabricating an optical element includes providing a substrate, forming a castable material coupled to the substrate, and casting the castable material using a mold. The method also includes curing the castable material and removing the mold. The optical element comprises a planar region and a clear aperture adjacent the planar region and characterized by an optical power.

公开(公告)号：US12055725B2

公开(公告)日：2024-08-06

申请号：US18308404

申请日：2023-04-27

Applicant: Magic Leap, Inc.

Inventor： Kang Luo ,  Vikramjit Singh ,  Nai-Wen Pi ,  Shuqiang Yang ,  Frank Y. Xu

IPC: G02B27/01 ,  G02B5/18 ,  G02B6/34

CPC classification number: G02B27/0172 ,  G02B6/34 ,  G02B27/0176 ,  G02B2027/0178

Abstract: Blazed diffraction gratings provide optical elements in head-mounted display systems to, e.g., incouple light into or out-couple light out of a waveguide. These blazed diffraction gratings may be configured to have reduced polarization sensitivity. Such gratings may, for example, incouple or outcouple light of different polarizations with similar level of efficiency. The blazed diffraction gratings and waveguides may be formed in a high refractive index substrate such as lithium niobate. In some implementations, the blazed diffraction gratings may include diffractive features having a feature height of 40 nm to 120 nm, for example, 80 nm. The diffractive features may be etched into the high index substrate, e.g., lithium niobate.

公开(公告)号：US11906763B2

公开(公告)日：2024-02-20

申请号：US17868485

申请日：2022-07-19

Applicant: Magic Leap, Inc.

Inventor： Shuqiang Yang ,  Kang Luo ,  Vikramjit Singh ,  Frank Y. Xu

IPC: G02B5/18 ,  G02B27/01

CPC classification number: G02B5/1857 ,  G02B5/1842 ,  G02B27/0172 ,  G02B2027/0125

Abstract: A method of fabricating a blazed diffraction grating comprises providing a master template substrate and imprinting periodically repeating lines on the master template substrate in a plurality of master template regions. The periodically repeating lines in different ones of the master template regions extend in different directions. The method additionally comprises using at least one of the master template regions as a master template to imprint at least one blazed diffraction grating pattern on a grating substrate.

公开(公告)号：US20230359036A1

公开(公告)日：2023-11-09

申请号：US18217418

申请日：2023-06-30

Applicant: Magic Leap, Inc.

Inventor： Ling Li ,  Christophe Peroz ,  Chieh Chang ,  Sharad D. Bhagat ,  Brian George Hill ,  Melanie Maputol West ,  Ryan Jason Ong ,  Xiaopei Deng ,  Shuqiang Yang ,  Frank Y. Xu ,  Ali Karbasi

IPC: G02B27/01 ,  F21V8/00

CPC classification number: G02B27/0172 ,  G02B6/0076 ,  G02B2027/0178

Abstract: A head-mounted, near-eye display system comprises a stack of waveguides having integral spacers separating the waveguides. The waveguides may each include diffractive optical elements that are formed simultaneously with the spacers by imprinting or casting. The spacers are disposed on one or more major surfaces of the waveguides and define a distance between immediately adjacent waveguides. Adjacent waveguides may be bonded using adhesives on the spacers. The spacers may fit within indentations of overlying waveguides. In some cases, the spacers may form one or more walls of material substantially around a perimeter of an associated waveguide. Vent holes may be provided in the walls to allow gas flow into and out from an interior volume defined by the spacers. Debris trapping structures may be provided between two walls of spacers to trap and prevent debris from entering into the interior volume.

公开(公告)号：US11614573B2

公开(公告)日：2023-03-28

申请号：US17019065

申请日：2020-09-11

Applicant: Magic Leap, Inc.

Inventor： Vikramjit Singh ,  Kang Luo ,  Xiaopei Deng ,  Shuqiang Yang ,  Frank Y. Xu ,  Kevin Messer

IPC: G02B5/18 ,  G02B27/01 ,  F21V8/00

Abstract: Diffraction gratings provide optical elements in head-mounted display systems to, e.g., incouple light into or out-couple light out of a waveguide. These diffraction gratings may be configured to have reduced polarization sensitivity. Such gratings may, for example, incouple or outcouple light of different polarizations with similar level of efficiency. The diffraction gratings and waveguides may include a transmissive layer and a metal layer. The diffraction grating may comprises a blazed grating.