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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：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
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.
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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：US11662584B2
公开(公告)日：2023-05-30
申请号：US17124807
申请日：2020-12-17
Applicant: Meta Platforms Technologies, LLC
Inventor： Hee Yoon Lee , Yu Shi , Elliott Franke
CPC classification number: G02B27/0172 , G02B6/34 , G02B2027/0178
Abstract: A waveguide display includes a waveguide, an input coupler configured to couple display light into the waveguide, and a surface-relief grating on the waveguide and configured to couple the display light out of the waveguide towards an eyebox of the waveguide display on a first side of the waveguide. The surface-relief grating is formed in a plurality of grating layers having uniform or non-uniform thickness profiles. The plurality of grating layers is characterized by a refractive index modulation that increases and then decreases as the distance of the grating layer from the waveguide increases.
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Patent Agency Ranking
公开(公告)号：US11570413B1
公开(公告)日：2023-01-31
申请号：US16940413
申请日：2020-07-28
Applicant: Meta Platforms Technologies, LLC
Inventor： Erik Shipton , Alireza Moheghi , Giuseppe Calafiore , Hee Yoon Lee
IPC: H04N9/43 , G02F1/1334 , H04N9/31 , G02F1/29 , G02B27/01
Abstract: An apparatus may include (1) a planar liquid-crystal structure including a plurality of liquid crystals, and (2) a plurality of electrodes coupled to the planar liquid-crystal structure such that (a) when a first plurality of voltages are applied to at least some of the plurality of electrodes, the plurality of liquid crystals are oriented such that the planar liquid-crystal structure operates as a diffraction grating having a first pitch, and (2) when a second plurality of voltages are applied to at least some of the plurality of electrodes, the plurality of liquid crystals are oriented such that the planar liquid-crystal structure operates as a diffraction grating having a second pitch different from the first pitch.
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6.发明公开公开(公告)号：US20230288705A1
公开(公告)日：2023-09-14
申请号：US17693187
申请日：2022-03-11
Applicant: Meta Platforms Technologies, LLC
Inventor： Haiwen Wang , Yu Shi , Siddharth Buddhiraju , Hee Yoon Lee
CPC classification number: G02B27/0172 , G02B6/005 , G02B5/1842
Abstract: An output grating for waveguide of a head-mounted display is configured to suppress the (1, 1) diffraction order of the output grating. The grating has a design of two or more materials having different refractive indices. The design is repeated periodically in a first dimension and repeated periodically in a second dimension, to form a two-dimensional pattern. A refractive index of the two-dimensional pattern is approximated by a two-dimensional Fourier series comprising a first coefficient of order (1, 0), a second coefficient of order (0, 1), and a third coefficient of order (1, 1). The third coefficient is less than half the first coefficient and less than half the second coefficient, such that light from the (1, 1) diffraction order of the grating is suppressed.
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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
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.
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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
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.
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公开(公告)号：US20250060523A1
公开(公告)日：2025-02-20
申请号：US18802924
申请日：2024-08-13
Applicant: Meta Platforms Technologies, LLC
Inventor： Jianbo Zhao , Miaomiao Xu , Pei Xiong , Yu Shi , Hee Yoon Lee
Abstract: The disclosed method may include providing, by a folding mirror region of a waveguide, two or more paths for light rays from an input mirror of the waveguide to an eye box of the waveguide. The method may also include supporting, by an output mirror of the waveguide, a field of view of at least sixty degrees by at least fifty degrees. The waveguide may correspond to a two-dimensional geometrical waveguide and the folding mirror region may fit entirely within a lens shape of the waveguide. Various other methods, systems, and computer-readable media are also disclosed.
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