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公开(公告)号：US11860395B2
公开(公告)日：2024-01-02
申请号：US18129656
申请日：2023-03-31
Applicant: Meta Platforms Technologies, LLC
Inventor： Zhujun Shi , Keith Patterson , Maxwell Parsons , Yongdan Hu , Giuseppe Calafiore , Zhimin Shi
IPC: F21V8/00 , G02F1/1343
CPC classification number: G02B6/0036 , G02B6/0078 , G02F1/13439 , G02F1/134309 , G02F2201/063 , G02F2201/302
Abstract: A self-lit display panel includes a photonic integrated circuit payer including an array of waveguides and an array of out-couplers for out-coupling portions of the illuminating light through pixels of the panel. The self-lit display panel may include a transparent electronic circuitry layer backlit by the photonic integrated circuit layer; the two layers may be on a same substrate or on opposed substrates defining a cell filled with an electro-active material. The configuration allows for chief ray engineering, zonal illuminating, and separate illumination with red, green, and blue illuminating light.
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公开(公告)号：US20230236351A1
公开(公告)日：2023-07-27
申请号：US18129656
申请日：2023-03-31
Applicant: Meta Platforms Technologies, LLC
Inventor： Zhujun Shi , Keith Patterson , Maxwell Parsons , Yongdan Hu , Giuseppe Calafiore , Zhimin Shi
IPC: F21V8/00 , G02F1/1343
CPC classification number: G02B6/0036 , G02F1/13439 , G02F1/134309 , G02B6/0078 , G02F2201/302 , G02F2201/063
Abstract: A self-lit display panel includes a photonic integrated circuit payer including an array of waveguides and an array of out-couplers for out-coupling portions of the illuminating light through pixels of the panel. The self-lit display panel may include a transparent electronic circuitry layer backlit by the photonic integrated circuit layer; the two layers may be on a same substrate or on opposed substrates defining a cell filled with an electro-active material. The configuration allows for chief ray engineering, zonal illuminating, and separate illumination with red, green, and blue illuminating light.
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公开(公告)号：US12189268B2
公开(公告)日：2025-01-07
申请号：US17837751
申请日：2022-06-10
Applicant: Meta Platforms Technologies, LLC
Inventor： Gareth John Valentine , Zhimin Shi , Xi Wu
Abstract: According to examples, a tunable visible light source may include a periodically poled lithium niobate (PPLN) waveguide and a control mechanism to optimize the phase-matching of the PPLN waveguide in response to an input signal with a varied wavelength. The control mechanism may include an electro-optic (EO) tuning mechanism, a microheater-based thermo-optic (TO) control mechanism, and/or an acousto-optic (AO) control mechanism. The control mechanisms may, respectively, generate an electric field, heat, or an acoustic wave to affect a change in refractive index of the PPLN waveguide and thereby optimize the conversion efficiency to maximize the output power of the output wavelength of the PPLN waveguide as the input wavelength is tuned.
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公开(公告)号：US20240081122A1
公开(公告)日：2024-03-07
申请号：US18462477
申请日：2023-09-07
Applicant: Meta Platforms Technologies, LLC
Inventor： Zhimin Shi , Yun Wang , Fenglin Peng , Christophe Antoine Hurni , James Ronald Bonar , Edward Buckley , Andrew John Ouderkirk , Yongdan Hu
CPC classification number: H10K59/38 , H10K59/50 , H10K59/878 , H10K59/879 , H10K59/8793
Abstract: A display system may include a light source that emits input light having a wavelength within a source wavelength range and an array of color conversion units overlapping a display area. A first set of color conversion units of the array of color conversion units may include a first color conversion medium that converts the input light to a first color of light having a wavelength within a first wavelength range that is different than the source wavelength range. The display system may also include a waveguide having an out-coupler that directs the input light from the light source toward the array of color conversion units. Various other devices, systems, and methods are also disclosed.
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公开(公告)号：US20240036432A1
公开(公告)日：2024-02-01
申请号：US18162175
申请日：2023-01-31
Applicant: Meta Platforms Technologies, LLC
Inventor： Afsoon Jamali , Changwon Jang , Zhimin Shi , Sho Nakahara , Sandro Pintz , Amit Bhowmick
IPC: G02F1/29
CPC classification number: G02F1/29 , G02F2201/122 , G02F2202/16
Abstract: A device includes a primary electrode, a secondary electrode overlapping at least a portion of the primary electrode, and a liquid crystal layer disposed between the primary electrode and the secondary electrode, where the primary electrode has a spatially variable electrical resistance.
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Patent Agency Ranking
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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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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8.发明公开公开(公告)号：US20230400748A1
公开(公告)日：2023-12-14
申请号：US17837751
申请日：2022-06-10
Applicant: Meta Platforms Technologies, LLC
Inventor： Gareth John Valentine , Zhimin Shi , Xi Wu
CPC classification number: G02F1/3546 , G02F1/395 , G02B27/0172 , G02B6/12009 , G02B2207/101 , B82Y20/00
Abstract: According to examples, a tunable visible light source may include a periodically poled lithium niobate (PPLN) waveguide and a control mechanism to optimize the phase-matching of the PPLN waveguide in response to an input signal with a varied wavelength. The control mechanism may include an electro-optic (EO) tuning mechanism, a microheater-based thermo-optic (TO) control mechanism, and/or an acousto-optic (AO) control mechanism. The control mechanisms may, respectively, generate an electric field, heat, or an acoustic wave to affect a change in refractive index of the PPLN waveguide and thereby optimize the conversion efficiency to maximize the output power of the output wavelength of the PPLN waveguide as the input wavelength is tuned.
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公开(公告)号：US11782305B1
公开(公告)日：2023-10-10
申请号：US17878442
申请日：2022-08-01
Applicant: Meta Platforms Technologies, LLC
Inventor： Changwon Jang , Afsoon Jamali , Zhimin Shi , Arman Boromand
IPC: G02F1/1335 , G02F1/1334 , G02F1/1343 , G02F1/1341 , G02B27/01 , G02F1/1337
CPC classification number: G02F1/133548 , G02B27/0172 , G02F1/1334 , G02F1/1341 , G02F1/133711 , G02F1/134309 , G02B2027/0178
Abstract: A device is provided. The device includes a first liquid crystal (“LC”) cell configured to modulate an amplitude of a light beam. The device also includes a second LC cell stacked with the first LC cell and configured to modulate a phase of the light beam. The device includes a sandwiched electrode layer disposed between the first LC cell and the second LC cell. The sandwiched electrode layer includes a conductive polymer film configured to function as a common electrode layer for driving at least one of the first LC cell or the second LC cell.
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公开(公告)号：US11681104B1
公开(公告)日：2023-06-20
申请号：US17739421
申请日：2022-05-09
Applicant: META PLATFORMS TECHNOLOGIES, LLC
Inventor： Ehsan Ordouie , Giuseppe Calafiore , Zhimin Shi
CPC classification number: G02B6/3502 , G02B6/3566 , G02B2006/1204 , G02F1/295
Abstract: In some embodiments, a photonic switch includes a first layer, a cantilever coupler, and a set of electrodes. The first layer includes a first waveguide that directs light in a first direction and a second waveguide that directs light in a second direction that is different from the first direction. The cantilever coupler is formed from a lithium niobate material and disposed over the first layer. The cantilever coupler includes a first end that is positioned over the first waveguide and a second end that is bonded to the second waveguide. The set of electrodes apply an electric potential across the first end, which deforms the first waveguide to couple to the second waveguide and propagates light between the first waveguide and the second waveguide.
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