公开(公告)号：US11971549B2

公开(公告)日：2024-04-30

申请号：US16979486

申请日：2019-03-12

Applicant: Magic Leap, Inc.

Inventor： Michael Anthony Klug ,  Kevin Richard Curtis ,  Vikramjit Singh ,  Kang Luo ,  Michal Beau Dennison Vaughn ,  Samarth Bhargava ,  Shuqiang Yang ,  Michael Nevin Miller ,  Frank Y. Xu ,  Kevin Messer ,  Robert D. Tekolste

IPC: G02B27/01 ,  F21V8/00 ,  G02B5/20 ,  G02B25/00

CPC classification number: G02B27/0172 ,  G02B6/0023 ,  G02B6/005 ,  G02B6/0065 ,  G02B6/0076 ,  G02B25/001 ,  G02B27/0149 ,  G02B5/201 ,  G02B2027/012 ,  G02B2027/0123 ,  G02B2027/0154 ,  G02B2027/0178 ,  G02B2027/0185

Abstract: Very high refractive index (n>2.2) lightguide substrates enable the production of 70° field of view eyepieces with all three color primaries in a single eyepiece layer. Disclosed herein are viewing optics assembly architectures that make use of such eyepieces to reduce size and cost, simplifying manufacturing and assembly, and better-accommodating novel microdisplay designs.

公开(公告)号：US20230213692A1

公开(公告)日：2023-07-06

申请号：US18181389

申请日：2023-03-09

Applicant: Magic Leap, Inc.

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

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

CPC classification number: G02B5/1842 ,  G02B6/0026 ,  G02B27/0172 ,  G02B2027/0178 ,  G02B6/0076

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.

公开(公告)号：US11693246B2

公开(公告)日：2023-07-04

申请号：US17379919

申请日：2021-07-19

Applicant: Magic Leap, Inc.

Inventor： Jeffrey Dean Schmulen ,  Neal Paul Ricks ,  Samarth Bhargava ,  Kevin Messer ,  Victor Kai Liu ,  Matthew Grant Dixon ,  Xiaopei Deng ,  Marlon Edward Menezes ,  Shuqiang Yang ,  Vikramjit Singh ,  Kang Luo ,  Frank Y. Xu

IPC: G02B6/34 ,  G02B27/01 ,  G02B27/42 ,  F21V8/00 ,  G02B27/10 ,  G02B6/26 ,  G06T19/00 ,  G02B6/10

CPC classification number: G02B27/0172 ,  G02B6/0026 ,  G02B6/26 ,  G02B27/1046 ,  G02B27/4233 ,  G06T19/006 ,  G02B6/10

Abstract: Display devices include waveguides with in-coupling optical elements that mitigate re-bounce of in-coupled light to improve overall in-coupling efficiency and/or uniformity. A waveguide receives light from a light source and/or projection optics and includes an in-coupling optical element that in-couples the received light to propagate by total internal reflection in a propagation direction within the waveguide. Once in-coupled into the waveguide the light may undergo re-bounce, in which the light reflects off a waveguide surface and, after the reflection, strikes the in-coupling optical element. Upon striking the in-coupling optical element, the light may be partially absorbed and/or out-coupled by the optical element, thereby effectively reducing the amount of in-coupled light propagating through the waveguide. The in-coupling optical element can be truncated or have reduced diffraction efficiency along the propagation direction to reduce the occurrence of light loss due to re-bounce of in-coupled light, resulting in less in-coupled light being prematurely out-coupled and/or absorbed during subsequent interactions with the in-coupling optical element.

公开(公告)号：US20220283371A1

公开(公告)日：2022-09-08

申请号：US17705202

申请日：2022-03-25

Applicant: Magic Leap, Inc.

Inventor： Robert D. Tekolste ,  Ryan Jason Ong ,  Victor Kai Liu ,  Samarth Bhargava ,  Christophe Peroz ,  Vikramjit Singh ,  Marlon Edward Menezes ,  Shuqiang Yang ,  Frank Y. Xu

IPC: G02B6/13 ,  G02B6/122 ,  G02B26/08 ,  F21V8/00

Abstract: An augmented reality device includes a projector, projector optics optically coupled to the projector, and an eyepiece optically coupled to the projector optics. The eyepiece includes an eyepiece waveguide characterized by lateral dimensions and an optical path length difference as a function of one or more of the lateral dimensions.

公开(公告)号：US20220128817A1

公开(公告)日：2022-04-28

申请号：US17437722

申请日：2020-03-11

Applicant: Magic Leap, Inc.

Inventor： Vikramjit Singh ,  Kang Luo ,  Michal Beau Dennison Vaughn ,  Samarth Bhargava ,  Shuqiang Yang ,  Michael Nevin Miller ,  Frank Y. Xu ,  Michael Anthony Klug ,  Kevin Messer ,  Robert D. Tekolste ,  Xiaopei Deng ,  Xiao Li

IPC: G02B27/01 ,  F21V8/00

Abstract: Waveguides comprising materials with refractive index greater than or equal to 1.8 and methods of patterning waveguides are disclosed. Patterned waveguides comprising materials with refractive index greater than or equal to 1.8 can be incorporated in display devices, such as, for example wearable display devices to project virtual images to a viewer.

公开(公告)号：US11307345B2

公开(公告)日：2022-04-19

申请号：US17194878

申请日：2021-03-08

Applicant: Magic Leap, Inc.

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

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：US20210356670A1

公开(公告)日：2021-11-18

申请号：US17320060

申请日：2021-05-13

Applicant: Magic Leap, Inc.

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

IPC: G02B6/26 ,  G02B25/00

Abstract: An eyepiece waveguide includes a set of waveguide layers having a world side and a user side. The eyepiece waveguide also includes a first cover plate having a first optical power and disposed adjacent the world side of the set of waveguide layers and a second cover plate having a second optical power and disposed adjacent the user side of the set of waveguide layers.

公开(公告)号：US11067808B2

公开(公告)日：2021-07-20

申请号：US16520217

申请日：2019-07-23

Applicant: Magic Leap, Inc.

Inventor： Jeffrey Dean Schmulen ,  Neal Paul Ricks ,  Samarth Bhargava ,  Kevin Messer ,  Victor Kai Liu ,  Matthew Grant Dixon ,  Xiaopei Deng ,  Marlon Edward Menezes ,  Shuqiang Yang ,  Vikramjit Singh ,  Kang Luo ,  Frank Y. Xu

IPC: G02B6/34 ,  G02B27/01 ,  G02B27/42 ,  F21V8/00 ,  G02B27/10 ,  G02B6/26 ,  G06T19/00 ,  G02B6/10

Abstract: Display devices include waveguides with in-coupling optical elements that mitigate re-bounce of in-coupled light to improve overall in-coupling efficiency and/or uniformity. A waveguide receives light from a light source and/or projection optics and includes an in-coupling optical element that in-couples the received light to propagate by total internal reflection in a propagation direction within the waveguide. Once in-coupled into the waveguide the light may undergo re-bounce, in which the light reflects off a waveguide surface and, after the reflection, strikes the in-coupling optical element. Upon striking the in-coupling optical element, the light may be partially absorbed and/or out-coupled by the optical element, thereby effectively reducing the amount of in-coupled light propagating through the waveguide. The in-coupling optical element can be truncated or have reduced diffraction efficiency along the propagation direction to reduce the occurrence of light loss due to re-bounce of in-coupled light, resulting in less in-coupled light being prematurely out-coupled and/or absorbed during subsequent interactions with the in-coupling optical element.

公开(公告)号：US20210041611A1

公开(公告)日：2021-02-11

申请号：US16930940

申请日：2020-07-16

Applicant: Magic Leap, Inc.

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

IPC: G02B5/18 ,  G02B27/01

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：US20200110278A1

公开(公告)日：2020-04-09

申请号：US16705127

申请日：2019-12-05

Applicant: Magic Leap, Inc.

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

IPC: G02B27/42 ,  G02B5/18 ,  G02B27/00 ,  G02B27/01

Abstract: A method of depositing a variable thickness material includes providing a substrate and 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 the substrate and performing a plasma deposition process on the substrate to deposit the variable thickness material. A layer thickness adjacent the first region is greater than a layer thickness adjacent the second region.