公开(公告)号：US20240255763A1

公开(公告)日：2024-08-01

申请号：US18622925

申请日：2024-03-30

申请人： Magic Leap, Inc.

发明人： 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分类号： G02B27/01 ,  G02B6/34

CPC分类号： G02B27/0172 ,  G02B6/0016 ,  G02B6/0036 ,  G02B6/0076 ,  G02B6/34 ,  G02B2027/0118 ,  G02B2027/0125

摘要： 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. A waveguide may be transparent and may comprise a substrate comprising a first material having a first refractive index greater than about 2.0. Diffractive features may be formed, on the substrate, of a second material having a second refractive index that is lower than the first refractive index. A third material may be disposed over the diffractive features and may have a third refractive index that is higher than the second refractive index.

公开(公告)号：US20240361602A1

公开(公告)日：2024-10-31

申请号：US18766282

申请日：2024-07-08

申请人： Magic Leap, Inc.

发明人： Kang LUO ,  Vikramjit SINGH ,  Nai-Wen PI ,  Shuqiang YANG ,  Frank Y. XU

IPC分类号： G02B27/01 ,  G02B6/34

CPC分类号： G02B27/0172 ,  G02B6/34 ,  G02B27/0176 ,  G02B2027/0178

摘要： 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：US20240134097A1

公开(公告)日：2024-04-25

申请号：US18400891

申请日：2023-12-29

申请人： Magic Leap, Inc.

发明人： Shuqiang YANG ,  Kang LUO ,  Vikramjit SINGH ,  Frank Y. XU

IPC分类号： G02B5/18 ,  G02B27/01

CPC分类号： G02B5/1857 ,  G02B5/1842 ,  G02B27/0172 ,  G02B2027/0125

摘要： 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. In some embodiments, 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. In some embodiments, the method further comprises coating the periodically repeating lines with a material having a greater hardness than the material that forms the lines.

公开(公告)号：US20230341597A1

公开(公告)日：2023-10-26

申请号：US18044824

申请日：2021-09-14

申请人： Magic Leap, Inc.

发明人： Victor Kai LIU ,  Samarth BHARGAVA ,  Brandon Michael-James BORN ,  Dianmin LIN ,  Pierre ST. HILAIRE ,  Vikramjit SINGH ,  Kang LUO

IPC分类号： G02B5/18 ,  G02B27/09 ,  G02B27/00 ,  G02B27/01

CPC分类号： G02B5/1819 ,  G02B27/0944 ,  G02B27/0081 ,  G02B27/0101 ,  G02B27/0172 ,  G02B2027/0112

摘要： An eyepiece waveguide for an augmented reality display system. The eyepiece waveguide can include an optically transmissive substrate with an input coupling grating (ICG) region. The ICG region can receive a beam of light and couple the beam into the substrate in a guided propagation mode. The eyepiece waveguide can also include a combined pupil expander-extractor (CPE) grating region that receives the beam of light from the ICG region and alters the propagation direction of the beam with a first interaction and out-couples the beam with a second interaction. The diffractive features of the CPE grating region can be arranged in rows and columns of alternating higher and lower quadrilateral surfaces or the diffractive features can comprise diamond shaped raised ridges. The eyepiece waveguide can also include one or more recycler grating regions.

公开(公告)号：US20240192494A1

公开(公告)日：2024-06-13

申请号：US18407878

申请日：2024-01-09

申请人： Magic Leap, Inc.

发明人： 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分类号： G02B27/01 ,  G02B5/20 ,  G02B25/00

CPC分类号： 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

摘要： 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：US20230036098A1

公开(公告)日：2023-02-02

申请号：US17938550

申请日：2022-10-06

申请人： Magic Leap, Inc.

发明人： Roy Patterson ,  Charles Scott Carden ,  Satish Sadam ,  Ryan Christiansen ,  Matthew S. Shafran ,  Christopher John Fleckenstein ,  Vikramjit Singh ,  Michael Nevin Miller ,  Kang LUO

IPC分类号： B29C59/04 ,  B29C51/26 ,  B29C43/22 ,  B29C43/28 ,  B29C43/30 ,  B29C43/34 ,  B29C43/48 ,  B29C43/50 ,  B29C43/52 ,  B29C43/58 ,  G03F7/00

摘要： Systems, apparatus, and methods for double-sided imprinting are provided. An example system includes first rollers for moving a first web including a first template having a first imprinting feature, second rollers for moving a second web including a second template having a second imprinting feature, dispensers for dispensing resist, a locating system for locating reference marks on the first and second webs for aligning the first and second templates, a light source for curing the resist, such that a cured first resist has a first imprinted feature corresponding to the first imprinting feature on one side of the substrate and a cured second resist has a second imprinted feature corresponding to the second imprinting feature on the other side of the substrate, and a moving system for feeding in the substrate between the first and second templates and unloading the double-imprinted substrate from the first and second webs.

公开(公告)号：US20240319506A1

公开(公告)日：2024-09-26

申请号：US18679328

申请日：2024-05-30

申请人： Magic Leap, Inc.

发明人： Xiaopei DENG ,  Vikramjit SINGH ,  Shuqiang YANG ,  Kang LUO ,  Nai-Wen PI ,  Frank Y. Xu

IPC分类号： G02B27/01 ,  G02B6/10 ,  G02B6/122 ,  G02B6/13 ,  G02B27/00

CPC分类号： G02B27/0172 ,  G02B6/0011 ,  G02B6/1223 ,  G02B6/13 ,  G02B27/0081 ,  G02B6/10 ,  G02B2027/0174

摘要： Recesses are formed on a front side and a rear side of a waveguide. A solid porogen material is spun onto the front side and the rear side and fills the recesses. First front and rear cap layers are then formed on raised formations of the waveguide and on the solid porogen material. The entire structure is then heated and the solid porogen material decomposes to a porogen gas. The first front and rear cap layers are porous to allow the porogen gas to escape and air to enter into the recesses. The air maximizes a difference in refractive indices between the high-index transparent material of the waveguide and the air to promote reflection in the waveguide from interfaces between the waveguide and the air.

公开(公告)号：US20230341692A1

公开(公告)日：2023-10-26

申请号：US18319745

申请日：2023-05-18

申请人： Magic Leap, Inc.

发明人： 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分类号： G02B27/01 ,  G02B27/42 ,  F21V8/00 ,  G02B27/10 ,  G02B6/26 ,  G06T19/00

CPC分类号： G02B27/0172 ,  G02B6/0026 ,  G02B6/26 ,  G02B27/1046 ,  G02B27/4233 ,  G06T19/006 ,  G02B6/10

摘要： 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：US20230296993A1

公开(公告)日：2023-09-21

申请号：US18014327

申请日：2021-08-06

申请人： Magic Leap, Inc.

发明人： Jeremy Lee SEVIER ,  Satish SADAM ,  Joseph Michael IMHOF ,  Kang LUO ,  Kangkang WANG ,  Roy Matthew PATTERSON ,  Qizhen XUE ,  Brett William BEST ,  Charles Scott CARDEN ,  Matthew S. SHAFRAN ,  Michael Nevin MILLER

IPC分类号： G03F9/00 ,  G03F7/00

CPC分类号： G03F9/7042 ,  G03F7/0002 ,  G03F9/7011 ,  G03F9/7046

摘要： Systems and methods for managing multi-objective alignments in imprinting (e.g., single-sided or double-sided) are provided. An example system includes rollers for moving a template roll, a stage for holding a substrate, a dispenser for dispensing resist on the substrate, a light source for curing the resist to form an imprint on the substrate when a template of the template roll is pressed into the resist on the substrate, a first inspection system for registering a fiducial mark of the template to determine a template offset, a second inspection system for registering the imprint on the substrate to determine a wafer registration offset between a target location and an actual location of the imprint, and a controller for controlling to move the substrate with the resist below the template based on the template offset, and determine an overlay bias of the imprint on the substrate based on the wafer registration offset.

公开(公告)号：US20230258943A1

公开(公告)日：2023-08-17

申请号：US18308404

申请日：2023-04-27

申请人： Magic Leap, Inc.

发明人： Kang LUO ,  Vikramjit SINGH ,  Nai-Wen PI ,  Shuqiang YANG ,  Frank Y. XU

IPC分类号： G02B27/01 ,  G02B6/34

CPC分类号： G02B27/0172 ,  G02B27/0176 ,  G02B6/34 ,  G02B2027/0178

摘要： 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.