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公开(公告)号：US20220365266A1
公开(公告)日：2022-11-17
申请号：US17681191
申请日：2022-02-25
Applicant: Meta Platforms Technologies, LLC
Inventor： Hsien-Hui CHENG , Lu LU , Yitian DING , Yun-Han LEE , Junren WANG , Mengfei WANG
Abstract: A device is provided. The device includes a first polarization hologram element having a first operating wavelength band and configured to selectively backwardly diffract or transmit a first light associated with the first operating wavelength band based on a polarization of the first light. The device also includes a second polarization hologram element having a second operating wavelength band and stacked with the first polarization hologram. A thickness of the first polarization hologram element is configured based on a signal-to-noise ratio between a diffraction efficiency of the first polarization hologram element for the first light and a diffraction efficiency of the first polarization hologram element for a second light associated with the second operating wavelength band being greater than a predetermined value.
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公开(公告)号：US20220326533A1
公开(公告)日：2022-10-13
申请号：US17852233
申请日：2022-06-28
Applicant: Meta Platforms Technologies, LLC
Inventor： Ying GENG , Brian WHEELWRIGHT , Jacques GOLLIER , Yusufu Njoni Bamaxam SULAI , Babak AMIRSOLAIMANI , Weichuan GAO , Gang LI , Mengfei WANG , Adrian TRAVIS
IPC: G02B27/01 , G02B3/08 , G02B5/02 , H04N9/31 , G02B5/18 , G02B5/30 , G02B27/10 , G02B27/28 , G02F1/1334 , G02F1/137
Abstract: A display device includes a projector and a display that has a first surface and a second surface. The projector is configured to project image light toward the display. The display is configured to output diffused image light from the first surface and to transmit ambient light from the second surface to the first surface. The display device also includes an optical assembly that has a substrate with substantially uniform thickness. The optical assembly is configured to receive the diffused image light and transmit a portion of the diffused image light output from the first surface of the display at a first optical power. The optical assembly is also configured to receive the ambient light and transmit a portion of the ambient light through the optical assembly at a second optical power that is less than the first optical power.
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公开(公告)号：US20230417962A1
公开(公告)日：2023-12-28
申请号：US17103920
申请日：2020-11-24
Applicant: Meta Platforms Technologies, LLC
Inventor： Yun-Han LEE , Mengfei WANG , Stephen CHOI , Kieran Connor KELLY , Lu LU , Kyle Justin CURTS
CPC classification number: G02B5/1814 , G02B27/286 , G03H1/0402 , G03H2223/23 , G03H2227/05 , G03H2222/52
Abstract: A system includes a surface relief grating configured to forwardly diffract an input beam as two linearly polarized beams. The system also includes a waveplate optically coupled with the surface relief grating and configured to convert the two linearly polarized beams into two circularly polarized beams having orthogonal circular polarizations. The two circularly polarized beams having orthogonal circular polarizations interfere with one another to generate a polarization interference pattern.
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公开(公告)号：US20220365482A1
公开(公告)日：2022-11-17
申请号：US17322453
申请日：2021-05-17
Applicant: Meta Platforms Technologies, LLC
Inventor： Hao YU , Dianmin LIN , Lu LU , Xiayu FENG , Mengfei WANG , Barry David SILVERSTEIN
Abstract: An optical device includes an optical component (e.g., a polarization volume hologram, a geometric phase device, or a polarization-insensitive diffractive optical element) having a uniform thickness and configured to modify a wavefront of a light beam that includes light in two or more wavelengths visible to human eyes, where the optical component has a chromatic aberration between the two or more wavelengths. The optical device also includes a metasurface on the optical component. The metasurface includes a plurality of nanostructures configured to modify respective phases of incident light at a plurality of regions of the metasurface, where the plurality of nanostructures is configured to, at each region of the plurality of regions, add a respective phase delay for each of the two or more wavelengths to correct the chromatic aberration between the two or more wavelengths.
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公开(公告)号：US20230080580A1
公开(公告)日：2023-03-16
申请号：US17866463
申请日：2022-07-15
Applicant: Meta Platforms Technologies, LLC
Inventor： Xiayu FENG , Yun-Han LEE , Babak AMIRSOLAIMANI , Mengfei WANG , Junren WANG , Lu LU
Abstract: A device includes a diffraction element and an optical filter stacked with the diffraction element. The optical filter is configured to forwardly deflect a light from a real-world environment incident onto the optical filter, at an incidence angle greater than or equal to a predetermined angle, toward the diffraction element. The diffraction element is configured to substantially transmit the light forwardly deflected by the optical filter.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20240272339A1
公开(公告)日：2024-08-15
申请号：US18167742
申请日：2023-02-10
Applicant: Meta Platforms Technologies, LLC
Inventor： Sawyer MILLER , Hsien-Hui CHENG , Mengfei WANG , Gary D. SHARP , Lu LU
CPC classification number: G02B5/1833 , G02B5/3016 , G02B5/32 , G02B27/283 , G03H1/0402 , G03H2001/0439 , G03H2223/13
Abstract: A device includes a Pancharatnam-Berry phase (“PBP”) film stack configured to diffract an input beam as a first polarized beam and a second polarized beam having opposite handednesses. A combined diffraction efficiency of the PBP film stack for the first and second polarized beams is greater than a predetermined value. The device also includes a compensation film stack coupled with the PBP film stack, and configured to respectively convert the first polarized beam and the second polarized beam into a third polarized beam and a fourth polarized beam having the opposite handednesses. The first and second polarized beams include at least one elliptically polarized beam, and the third and fourth polarized beams are two circularly polarized beams. The compensation film stack is configured to convert the at least one elliptically polarized beam into at least one of the two circularly polarized beams.
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公开(公告)号：US20230152750A1
公开(公告)日：2023-05-18
申请号：US17948233
申请日：2022-09-20
Applicant: Meta Platforms Technologies, LLC
Inventor： Junren WANG , Xiayu FENG , Mengfei WANG , Lu LU
CPC classification number: G03H1/0402 , G02B5/32 , G02B27/0179 , G02B27/0172 , G02B5/3016 , G02B2027/0178 , G02B2027/0187 , G02B2027/0109 , G03H2001/0439 , G03H2001/0413 , G03H2260/12 , G03H2222/35 , G02B2027/0174 , G06F3/013
Abstract: A method includes providing a radiation with a predetermined intensity profile. The method also includes providing a photo-sensitive medium layer including a mixture of a photo-sensitive material and an absorbing additive. The absorbing additive has a predetermined non-uniform distribution in at least one of a direction within a film plane or a thickness direction of the photo-sensitive medium layer. The predetermined non-uniform distribution of the absorbing additive is configured to result in a predetermined non-uniform absorption of the radiation. The method also includes exposing the photo-sensitive medium layer to the radiation to form a polymer film. The optical film includes at least one predetermined birefringence variation in at least one of a direction within a film plane or a thickness direction of the polymer film.
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公开(公告)号：US20220413205A1
公开(公告)日：2022-12-29
申请号：US17901851
申请日：2022-09-02
Applicant: Meta Platforms Technologies, LLC
Inventor： Yun-Han LEE , Lu LU , Mengfei WANG , Fenglin PENG , Junren WANG , Oleg YAROSHCHUK , Yingfei JIANG , Babak AMIRSOLAIMANI , Scott Charles MCELDOWNEY
Abstract: A device includes a display configured to generate an image light. The device also includes a waveguide optically coupled with the display and configured to guide the image light to an exit pupil of the device. The waveguide includes a grating including a birefringent material, and a birefringence of the grating is configured to increase along a pupil-expanding direction of the device.
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9.发明公开公开(公告)号：US20240353707A1
公开(公告)日：2024-10-24
申请号：US18302556
申请日：2023-04-18
Applicant: Meta Platforms Technologies, LLC
Inventor： Hsien-Hui CHENG , Michael ESCUTI , Xiayu FENG , Mengfei WANG , Steven John ROBBINS , Zhexin ZHAO , Lu LU
IPC: G02F1/1335 , G02F1/13363 , G02F1/1337 , G02F1/137 , G03H1/02
CPC classification number: G02F1/133524 , G02F1/133507 , G02F1/13355 , G02F1/133636 , G02F1/133757 , G02F1/13706 , G03H1/0248
Abstract: A device is provided. The device includes a light guide configured to guide a first light propagating therein. The device also includes an optical film coupled with the light guide, optically anisotropic molecules in the optical film being configured with an in-plane orientation pattern having an in-plane pitch along the predetermined in-plane direction. Within the in-plane pitch of the in-plane orientation pattern, azimuthal angles of the optically anisotropic molecules are configured to vary nonlinearly along the predetermined in-plane direction. The optical film is configured to diffract the first light as a plurality of second lights at a plurality of locations of the optical film, with a plurality of predetermined, different diffraction efficiencies.
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10.发明公开公开(公告)号：US20240272473A1
公开(公告)日：2024-08-15
申请号：US18169872
申请日：2023-02-15
Applicant: Meta Platforms Technologies, LLC
Inventor： Hsien-Hui CHENG , Sawyer MILLER , Xiayu FENG , Mengfei WANG , Yuge HUANG , Michael ESCUTI
IPC: G02F1/1335 , G02B5/32 , G02F1/13363 , G02F1/1337
CPC classification number: G02F1/133543 , G02B5/32 , G02F1/133636 , G02F1/133637 , G02F1/133776
Abstract: A device is provided. The device includes an optical film including optically anisotropic molecules configured to form a plurality of helical structures with a plurality of helical axes and a helical pitch. The helical pitch is a distance along a helical axis over which an azimuthal angle of an optically anisotropic molecule vary by a predetermined value. Over the helical pitch of a helical structure, the azimuthal angle of the optically anisotropic molecule is configured to vary nonlinearly with respect to a distance from a starting point of the helical pitch to a local point at which the optically anisotropic molecule is located along the helical axis.
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