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公开(公告)号：US20250085592A1
公开(公告)日：2025-03-13
申请号：US18826044
申请日：2024-09-05
Applicant: Meta Platforms Technologies, LLC
Inventor： Zhujun Shi , Min Chul Shin , Guohua Wei , Giuseppe Calafiore
IPC: G02F1/13357
Abstract: The disclosed method may include configuring an illuminator to emit a first path of light in a first direction and to emit a second path of light in a second direction. The method may additionally include, configuring a reflector to reflect the first path of light in the second direction. The method may also include configuring the first path of light reflected in the second direction to interfere destructively with the second path of light when a liquid crystal is set to an off state. Various other methods, systems, and computer-readable media are also disclosed.
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公开(公告)号：US11726252B2
公开(公告)日：2023-08-15
申请号：US17741404
申请日：2022-05-10
Applicant: Meta Platforms Technologies, LLC
Inventor： Zhujun Shi , Keith Patterson , Maxwell Parsons , Giuseppe Calafiore , Yongdan Hu , Zhimin Shi
IPC: G02F1/1343 , F21V8/00
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：US11709411B2
公开(公告)日：2023-07-25
申请号：US17378467
申请日：2021-07-16
Applicant: META PLATFORMS TECHNOLOGIES, LLC
Inventor： Fenglin Peng , Ying Geng , Jacques Gollier , Giuseppe Calafiore , Alexander Koshelev , Mengfei Wang , Lu Lu
IPC: G02F1/29 , G02B27/01 , G02F1/13 , G02F1/1347 , G06F3/01
CPC classification number: G02F1/292 , G02B27/0172 , G02B27/0179 , G02F1/1323 , G02F1/13473 , G02B2027/0178 , G02B2027/0187 , G06F3/013
Abstract: A display device includes a directional illuminator providing a light beam, a display panel downstream of a directional illuminator, for receiving and spatially modulating the light beam, and a beam redirecting module downstream of the display panel, for variably redirecting the spatially modulated light beam. Steering the illuminating light by the beam redirecting module enables one to steer the exit pupil of the display device to match the user's eye location(s).
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公开(公告)号：US12140761B2
公开(公告)日：2024-11-12
申请号：US17746672
申请日：2022-05-17
Applicant: Meta Platforms Technologies, LLC
Inventor： Giuseppe Calafiore , Alexander Koshelev
Abstract: A device for providing a 1D line of an image is disclosed. The device includes a wavelength-tunable light source for providing image light having the angular distribution encoded in optical spectrum. The device further includes a thin slab waveguide having an out-coupler in form of a diffraction grating for out-coupling the image light at an angle dependent on wavelength. The image may be formed by scanning a collimated beam propagating in the slab waveguide when using tunable monochromatic light sources, or by forming the 1D singular distribution of brightness at a same time when using a tunable-spectrum light sources. The device may be used in a near-eye display for forming a 2D image in angular domain.
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公开(公告)号：US11789186B1
公开(公告)日：2023-10-17
申请号：US17216038
申请日：2021-03-29
Applicant: Meta Platforms Technologies, LLC
Inventor： Giuseppe Calafiore , Austin Lane , Matthew E. Colburn
CPC classification number: G02B5/1857 , G02B6/34 , G03F7/0005
Abstract: An optical device with a variable index of refraction is formed by exposing a film to an energy gradient. The optical device has angular selectivity. The optical device can be used as an output coupler for a waveguide used in a virtual-reality and/or augmented-reality apparatus.
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Patent Agency Ranking
公开(公告)号：US20230176376A1
公开(公告)日：2023-06-08
申请号：US17581303
申请日：2022-01-21
Applicant: Meta Platforms Technologies, LLC
CPC classification number: G02B27/0172 , G02B6/0016 , G02B6/0038 , G02B2027/0174 , G02B2027/0112
Abstract: A lightguide for conveying image light to an eyebox of a display device includes a tunable grating, e.g. an out-coupling grating for out-coupling the image light from the lightguide. The tunable grating may be tuned or switched to effectively diffract light of a color channel of a color-sequential display. In augmented reality display systems, a lightguide combiner element may include a switchable grating to out-couple the image light only during short time intervals and to not out-couple the image light in between these time intervals. Effectively, the out-coupling grating is present only a portion of overall operation time of the display, which improves the transparency of the combiner element to the outside light and reduces rainbow effects.
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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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公开(公告)号：US11815680B2
公开(公告)日：2023-11-14
申请号：US17900540
申请日：2022-08-31
Applicant: Meta Platforms Technologies, LLC
Inventor： Giuseppe Calafiore , Oleg Yaroshchuk , Barry David Silverstein
CPC classification number: G02B27/0101 , G02B5/18 , G02B5/1828 , G02B27/0081 , G02B27/0172 , G02B27/4272 , G02B2027/0123 , G02B2027/0159
Abstract: A device includes a waveguide. The device also includes a plurality of grating sets coupled with the waveguide and configured to, during a plurality of time periods, couple a plurality of input image lights into and out of the waveguide as a plurality of output image lights. In a first grating set of the plurality of grating sets, a first vector sum of in-plane projections of grating vectors associated with all gratings included in the first grating set is a first non-null vector. In a second grating set of the plurality of grating sets, a second vector sum of in-plane projections of grating vectors associated with all gratings included in the second grating set is a second non-null vector. The first vector sum and the second vector sum have different directions.
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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：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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