公开(公告)号：US11698533B2

公开(公告)日：2023-07-11

申请号：US17329507

申请日：2021-05-25

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Pasi Saarikko

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

CPC classification number: G02B27/0172 ,  G02B6/0016 ,  G02B6/0035 ,  G02B6/0078 ,  G02B27/0081 ,  G02B2027/0125

Abstract: A waveguide display includes light sources, a source waveguide, an output waveguide, and a controller. Light from each of the light sources is coupled into the source waveguide. The source waveguide includes gratings with a constant period determined based on the conditions for total internal reflection and first order diffraction of the received image light. The emitted image light is coupled into the output waveguide at several entrance locations. The output waveguide outputs expanded image lights at a location offset from the entrance location, and the location/direction of the emitted expanded image light is based in part on the orientation of the light sources. Each of the expanded image light is associated with a field of view of the expanded image light emitted by the output waveguide.

公开(公告)号：US11450250B1

公开(公告)日：2022-09-20

申请号：US17393017

申请日：2021-08-03

Applicant: Meta Platforms Technologies, LLC

Inventor： Wanli Chi ,  Pasi Saarikko ,  Hee Yoon Lee

IPC: G09G3/02 ,  G09G3/20 ,  G09G3/34 ,  F21V8/00 ,  G02B27/01 ,  G02B27/14 ,  G02B26/10 ,  G02B26/08

Abstract: A waveguide display includes a source assembly, an output waveguide, and a controller. The source assembly includes a light source and an optics system. The light source includes source elements arranged in a 1D or 2D array that emit image light. The optics system includes a scanning mirror assembly that scans the image light to particular locations based on scanning instructions. The output waveguide receives the scanned image light from the scanning mirror assembly and outputs an expanded image light. In some embodiments, the waveguide display includes a source waveguide and the 1D array of source elements. The source waveguide receives a conditioned image light from the source assembly. The controller generates the scanning instructions and provides the scanning instructions to the scanning mirror assembly. In some embodiments, the controller provides the scanning instructions to an actuator assembly of the source waveguide.

公开(公告)号：US11624917B2

公开(公告)日：2023-04-11

申请号：US16840119

申请日：2020-04-03

Applicant: Meta Platforms Technologies, LLC

Inventor： Wanli Chi ,  Dominic Meiser ,  Yang Yang ,  Wai Sze Tiffany Lam ,  Pasi Saarikko

IPC: G02B27/01 ,  F21V8/00 ,  G02B27/00 ,  G02B27/44 ,  H04N9/31 ,  G02B1/11 ,  G02B27/42

Abstract: A waveguide display includes a waveguide and a grating coupler configured to couple display light into or out of the waveguide. The grating coupler includes at least a first grating layer and a second grating layer arranged in a stack. The first grating layer is characterized by a first thickness and includes a first transmission VBG configured to diffract display light of a first wavelength from a first field of view. The second grating layer is characterized by a second thickness greater than the first thickness and includes a second transmission VBG configured to diffract display light of the first wavelength from a second field of view greater than the first field of view.

公开(公告)号：US11817022B2

公开(公告)日：2023-11-14

申请号：US18046644

申请日：2022-10-14

Applicant: Meta Platforms Technologies, LLC

Inventor： Nicholas Daniel Trail ,  Byron Taylor ,  Yufeng Zhu ,  Andrew John Ouderkirk ,  Hee Yoon Lee ,  Sharvil Shailesh Talati ,  Behnam Bastani ,  Pasi Saarikko

IPC: G09G3/00 ,  G02B27/01

CPC classification number: G09G3/003 ,  G02B27/0172 ,  G02B2027/0118 ,  G09G2300/026 ,  G09G2320/0233 ,  G09G2320/0626 ,  G09G2340/12

Abstract: A method for correcting artifacts in artificial reality headsets is provided. The method includes coupling a first image portion into a waveguide in a display for an artificial reality device, provided by a first array of pixels, coupling a second image portion into the waveguide in the display, provided by a second array of pixels, directing the first image portion through an eyebox, directing the second image portion through the eyebox, and tiling, in a user's retina, the first image portion and the second image portion to form an image having an extended field of view that includes an overlapping area comprising light provided by the first array of pixels and the second array of pixels. A system including a memory storing instructions and a processor to execute the instructions to cause the system to perform the above method are also provided.

公开(公告)号：US11774753B1

公开(公告)日：2023-10-03

申请号：US17531301

申请日：2021-11-19

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Giuseppe Calafiore ,  Ningfeng Huang ,  Andrew Maimone ,  Andrew Ouderkirk ,  Hee Yoon Lee ,  Maxwell Parsons ,  Scott Charles McEldowney ,  Babak Amirsolaimani ,  Pasi Saarikko ,  Wanli Chi ,  Alexander Koshelev ,  Barry David Silverstein ,  Lu Lu ,  Wai Sze Tiffany Lam ,  Gang Li ,  Stephan Lutgen ,  Francois Gerard Franck Olivier ,  David Massoubre

IPC: G02B27/00 ,  G02B27/44 ,  G02B27/01 ,  G02B27/09 ,  G02B27/10

CPC classification number: G02B27/0081 ,  G02B27/0172 ,  G02B27/0944 ,  G02B27/1086 ,  G02B27/44 ,  G02B2027/0145 ,  G02B2027/0152

Abstract: A waveguide assembly is provided. The waveguide assembly includes a pair of pupil-replicating waveguides. The first pupil-replicating waveguide is configured for receiving an input beam of image light and providing an intermediate beam comprising multiple offset portions of the input beam. The second pupil-replicating waveguide is configured for receiving the intermediate beam from the first pupil-replicating waveguide and providing an output beam comprising multiple offset portions of the intermediate beam. The input beam may be expanded by the waveguide assembly in such a manner that pupil gaps are reduced or eliminated.

公开(公告)号：US11947117B2

公开(公告)日：2024-04-02

申请号：US17496550

申请日：2021-10-07

Applicant: Meta Platforms Technologies, LLC

Inventor： Wanli Chi ,  Dominic Meiser ,  Yang Yang ,  Wai Sze Tiffany Lam ,  Pasi Saarikko ,  Ningfeng Huang

IPC: G02B27/01 ,  F21V8/00 ,  G02B1/11 ,  G02B27/00 ,  G02B27/42 ,  G02B27/44 ,  H04N9/31

CPC classification number: G02B27/0172 ,  G02B1/11 ,  G02B6/0016 ,  G02B6/0026 ,  G02B6/0038 ,  G02B6/005 ,  G02B27/0081 ,  G02B27/4205 ,  G02B27/44 ,  H04N9/3152 ,  G02B2027/0112 ,  G02B2027/0118 ,  G02B2027/012 ,  G02B2027/0123 ,  G02B2027/0138 ,  G02B2027/0174 ,  G02B2027/0178 ,  G02B2027/0187

Abstract: A waveguide display includes a waveguide transparent to visible light, a first volume Bragg grating (VBG) on the waveguide and characterized by a first refractive index modulation, and a second reflection VBG on the waveguide and including a plurality of regions characterized by different respective refractive index modulations. The first reflection VBG is configured to diffract display light in a first wavelength range and a first field of view (FOV) range such that the display light in the first wavelength range and the first FOV range propagates in the waveguide through total internal reflection to the plurality of regions of the second reflection VBG. The plurality of regions of the second reflection VBG are configured to diffract the display light in different respective wavelength ranges within the first wavelength range and the first FOV range.

公开(公告)号：US11933975B2

公开(公告)日：2024-03-19

申请号：US17677406

申请日：2022-02-22

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Babak Amirsolaimani ,  Pasi Saarikko ,  Ying Geng ,  Yusufu Njoni Bamaxam Sulai ,  Scott Charles McEldowney

IPC: G02B27/00 ,  F21V8/00 ,  G02B6/10 ,  G02B6/27 ,  G02B6/35 ,  G02B6/42 ,  G02B23/12 ,  G02B27/01 ,  G06F3/01 ,  G06T7/70

CPC classification number: G02B27/0093 ,  G02B6/0056 ,  G02B6/105 ,  G02B6/27 ,  G02B6/356 ,  G02B6/42 ,  G02B6/4206 ,  G02B23/125 ,  G02B27/0172 ,  G06F3/013 ,  G06T7/70 ,  G02B2027/011 ,  G02B2027/0138 ,  G02B2027/0174 ,  G02B2027/0178

Abstract: An optical system includes an optical waveguide, and a first optical element configured to direct a first ray, having a first circular polarization and impinging on the first optical element at a first incidence angle, in a first direction so that the first ray propagates through the optical waveguide via total internal reflection toward a second optical element. The first optical element is configured to also direct a second ray, having a second circular polarization that is distinct from the first circular polarization and impinging on the first optical element at the first incidence angle, in a second direction that is distinct from the first direction so that the second ray propagates away from the second optical element. The second optical element is configured to direct the first ray propagating through the optical waveguide toward a detector.

公开(公告)号：US20230169897A1

公开(公告)日：2023-06-01

申请号：US18046644

申请日：2022-10-14

Applicant: Meta Platforms Technologies, LLC

Inventor： Nicholas Daniel Trail ,  Byron Taylor ,  Yufeng Zhu ,  Andrew John Ouderkirk ,  Hee Yoon Lee ,  Sharvil Shailesh Talati ,  Behnam Bastani ,  Pasi Saarikko

IPC: G09G3/00 ,  G02B27/01

CPC classification number: G09G3/003 ,  G02B27/0172 ,  G09G2300/026 ,  G09G2340/12 ,  G09G2320/0233 ,  G09G2320/0626 ,  G02B2027/0118

Abstract: A method for correcting artifacts in artificial reality headsets is provided. The method includes coupling a first image portion into a waveguide in a display for an artificial reality device, provided by a first array of pixels, coupling a second image portion into the waveguide in the display, provided by a second array of pixels, directing the first image portion through an eyebox, directing the second image portion through the eyebox, and tiling, in a user's retina, the first image portion and the second image portion to form an image having an extended field of view that includes an overlapping area comprising light provided by the first array of pixels and the second array of pixels. A system including a memory storing instructions and a processor to execute the instructions to cause the system to perform the above method are also provided.

公开(公告)号：US11656464B2

公开(公告)日：2023-05-23

申请号：US17203056

申请日：2021-03-16

Applicant: Meta Platforms Technologies, LLC

Inventor： Siddharth Buddhiraju ,  Hee Yoon Lee ,  Pasi Saarikko

IPC: G02B27/01 ,  F21V8/00

CPC classification number: G02B27/0172 ,  G02B6/0016 ,  G02B6/0035 ,  G02B6/0056 ,  G02B2027/0112

Abstract: A pupil-replicating waveguide includes a high-index substrate and a low-index substrate coupled by an intermediate layer between the substrates. The refractive index of the intermediate layer is lower than the refractive index of the low-index substrate. The intermediate layer prevents highly oblique rays of image light from entering the low-index substrate, thereby reducing intensity drops in the field of view conveyed by the pupil-replicating waveguide, the intensity drops caused by insufficient replication of the highly oblique rays in the low-index substrate.