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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
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.
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公开(公告)号：US12282182B2
公开(公告)日：2025-04-22
申请号：US18063913
申请日：2022-12-09
Applicant: Meta Platforms Technologies, LLC
Inventor： Wai Sze Tiffany Lam , Wanli Chi , Yang Yang , Dominic Meiser
Abstract: A waveguide display system include a waveguide, an input coupler configured to couple display light into the waveguide, a first pupil expander, and a second pupil expander. The first pupil expander is configured to deflect, at a first plurality of locations along a first direction, the display light towards the second pupil expander. The second pupil expander is configured to deflect, at a second plurality of locations along a second direction different from the first direction, the display light from the first pupil expander towards an eyebox of the waveguide display system. At least one of the input coupler, the first pupil expander, or the second pupil expander includes transflective mirrors that are tilted within the waveguide such that the transflective mirrors are inconspicuous when viewed from an oblique angle.
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公开(公告)号：US20250046301A1
公开(公告)日：2025-02-06
申请号：US18787739
申请日：2024-07-29
Applicant: Meta Platforms Technologies, LLC
Inventor： Balasubramanian Sivakumar , Min Hyuk Choi , Gang Chen , Gyungmin Kim , Ahmet Tura , Hai Jung In , Weiwei Wang , Suhui Lee , Woong Hwang , Wanyue Song , Wai Sze Tiffany Lam , Wanli Chi , Nikolaos Sarafianos , Rakesh Ranjan , Alexander Sorkine Hornung , Seonghyeon Nam , Hyunyoung Jung , Ruiming Xie , Ju Lin , Niko Moritz , Frank Torsten Bernd Seide
Abstract: A display device includes a diffusion layer providing a single well, an optical element configured to receive light and output the received image light including a concentric series of lens segments made up of active facets, and a waveguide having an in-coupling grating and a waveguide body optically coupled to the image light, where a polarizing component is disposed over an output surface of the optical element. A method to improve a yield of silicon backplane displays includes connecting a diode having a resolution to a backplane and repairing a defect on a pixel display area by dividing the pixel display area into at least one subcircuit, while improving geometry stylization transfer for 3D models of real-world environments. A method for suppressing crosstalk for user conversations includes receiving multiple speech signals captured by multiple microphones and generating directional data for the multiple speech signals based on spatial filtering.
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公开(公告)号：US20240094552A1
公开(公告)日：2024-03-21
申请号：US18171944
申请日：2023-02-21
Applicant: Meta Platforms Technologies, LLC
Inventor： Miaomiao Xu , Wanli Chi , Alexander Sohn
CPC classification number: G02B27/106 , G02B6/2817 , G02B27/0172
Abstract: A waveguide may include a substrate and an array of beam splitters embedded within the substrate, where each beam splitter within the array of beam splitters does not fully transect the substrate. Various other devices, systems, and methods of manufacture are also disclosed.
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公开(公告)号：US11863912B2
公开(公告)日：2024-01-02
申请号：US17834731
申请日：2022-06-07
Applicant: Meta Platforms Technologies, LLC
Inventor： Zhimin Shi , Chloe Astrid Marie Fabien , Wanli Chi
CPC classification number: H04N9/3129 , G02B6/124 , G02B6/125 , G02B6/264 , G02B27/0172
Abstract: A display device may include a projector coupled to volume Bragg grating (VBG) based pupil-replicating lightguide. The projector may be a scanning projector or a display panel based projector. A lighting unit for the display panel may have spatially variant spectral composition selected to match angular and wavelength selectivity of the VBGs of the pupil-replicating lightguide, thereby improving light utilization efficiency of the display device. In scanning projector implementations, the center wavelength of the scanned light beam may be varied in coordination with the scanning, to achieve the same effect.
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Patent Agency Ranking
公开(公告)号：US11846774B2
公开(公告)日：2023-12-19
申请号：US17697592
申请日：2022-03-17
Applicant: Meta Platforms Technologies, LLC
Inventor： Sihui He , Jacques Gollier , Maxwell Parsons , Babak Amirsolaimani , Wanli Chi , Daniel Guenther Greif , Renate Eva Klementine Landig , Xiayu Feng , Zhimin Shi , Nicholas John Diorio , Yang Yang , Giuseppe Calafiore , Fenglin Peng , Tanya Malhotra , Andrew John Ouderkirk
IPC: G02B27/00 , G02B27/01 , G06F3/01 , G02F1/29 , F21V8/00 , G02B6/35 , G02F1/1335 , G09G3/00 , G09G3/34 , G06T7/246 , H04N23/56 , G02F1/335 , G03H1/02 , G06F1/16 , H04N23/698 , G01B11/22 , G01S7/4865 , G01S17/10 , G02B27/42 , G02F1/33 , G06T3/40 , G02B27/44 , G02B26/08 , H04N23/10
CPC classification number: G02B27/0093 , G01B11/22 , G01S7/4865 , G01S17/10 , G02B6/005 , G02B6/0016 , G02B6/0031 , G02B6/0035 , G02B6/0066 , G02B6/3518 , G02B26/0816 , G02B27/0081 , G02B27/0172 , G02B27/0179 , G02B27/4205 , G02B27/44 , G02F1/133504 , G02F1/133526 , G02F1/292 , G02F1/294 , G02F1/33 , G02F1/335 , G03H1/0248 , G06F1/163 , G06F3/013 , G06T3/4038 , G06T7/246 , G09G3/002 , G09G3/3413 , H04N23/56 , H04N23/698 , G02B2027/0105 , G02B2027/0138 , G02B2027/0174 , G02B2027/0178 , G02B2027/0187 , G06T2207/30201 , G09G2310/0235 , H04N23/10
Abstract: A pupil-replicating lightguide includes a slab of transparent material, a switchable out-coupling grating for out-coupling portions of image light to propagate towards an eyebox, and a switchable tracking grating for redirecting tracking light carrying an eye image towards an eye tracking camera. One of the two gratings may be turned ON while the other is turned OFF, in a time-sequential manner, allowing the combined use of the pupil-replicating lightguide for carrying image light and eye tracking light.
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公开(公告)号：US11774758B2
公开(公告)日：2023-10-03
申请号：US17184316
申请日：2021-02-24
Applicant: Meta Platforms Technologies, LLC
Inventor： Yang Yang , Wanli Chi , Wai Sze Tiffany Lam , Dominic Meiser
CPC classification number: G02B27/0172 , G02B6/0016 , G02B6/0036 , G02B27/102 , G02B2027/0112 , G02B2027/0123 , G02B2027/0174 , G06F3/012 , G06F3/013
Abstract: A waveguide display includes a waveguide, three input gratings configured to couple display light in different respective colors into the waveguide, one or more first middle gratings configured to receive and redirect the display light from the three input gratings, a second middle grating configured to diffract, at two or more regions of the second middle grating, the display light from the one or more first middle gratings, and an output grating configured to couple the display light from each of the two or more regions of the second middle grating out of the waveguide at two or more regions of the output grating.
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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
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.
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公开(公告)号：US11609424B2
公开(公告)日：2023-03-21
申请号：US16505462
申请日：2019-07-08
Applicant: Meta Platforms Technologies, LLC
Inventor： Gregory Olegovic Andreev , Gang Li , Erik Shipton , Yingfei Jiang , Wanli Chi , Andrew John Ouderkirk
Abstract: Techniques disclosed herein relate to a near-eye display system. One example of an eye-tracking system includes a substrate transparent to visible light and infrared light and a reflective holographic grating conformally coupled to a surface of the substrate. The reflective holographic grating is configured to transmit the visible light and reflectively diffract infrared light in a first wavelength range for eye tracking. The refractive index modulation of the reflective holographic grating is apodized in a direction along a thickness of the reflective holographic grating to reduce optical artifacts in the visible light.
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公开(公告)号：US12085717B2
公开(公告)日：2024-09-10
申请号：US17672418
申请日：2022-02-15
Applicant: Meta Platforms Technologies, LLC
Inventor： Wai Sze Tiffany Lam , Yang Yang , Dominic Meiser , Wanli Chi
CPC classification number: G02B27/0172 , G02B6/0038 , G02B6/0053 , G02B2027/0118 , G02B2027/0123 , G02B2027/0178
Abstract: According to examples, a display system may include a wearable eyewear arrangement that may include a lens assembly having a projector to propagate display light associated with an image. The lens assembly may also include a waveguide for propagating the display light to an eyebox. The waveguide may include a combination of a volume Bragg grating (VBG) component and a partial reflective component that are oriented in a pre-determined configuration to reflect or propagate the display light to maximize a coverage in field of view (FOV) at the eyebox, while minimizing at least one of a ghost image or an intercepting optical lines pattern.
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