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公开(公告)号：US20230037261A1
公开(公告)日：2023-02-02
申请号：US17865223
申请日：2022-07-14
Applicant: Meta Platforms Technologies, LLC
Inventor： Qing Chao , Lu Lu , Xinqiao Liu , Hao Yu , Junren Wang
Abstract: Imaging systems, cameras, and image sensors of this disclosure include imaging pixels that include subpixels. Diffractive optical elements such as a metasurface lens layers or a liquid crystal polarization hologram (LCPH) are configured to focus image light to the subpixels of the imaging pixels.
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公开(公告)号：US12231749B2
公开(公告)日：2025-02-18
申请号：US17865223
申请日：2022-07-14
Applicant: Meta Platforms Technologies, LLC
Inventor： Qing Chao , Lu Lu , Xinqiao Liu , Hao Yu , Junren Wang
Abstract: Imaging systems, cameras, and image sensors of this disclosure include imaging pixels that include subpixels. Diffractive optical elements such as a metasurface lens layers or a liquid crystal polarization hologram (LCPH) are configured to focus image light to the subpixels of the imaging pixels.
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公开(公告)号：US20250159316A1
公开(公告)日：2025-05-15
申请号：US19019305
申请日：2025-01-13
Applicant: Meta Platforms Technologies, LLC
Inventor： Qing Chao , Lu Lu , Xinqiao Liu , Hao Yu , Junren Wang
Abstract: Imaging systems, cameras, and image sensors of this disclosure include imaging pixels that include subpixels. Diffractive optical elements such as a metasurface lens layers or a liquid crystal polarization hologram (LCPH) are configured to focus image light to the subpixels of the imaging pixels. Microlens regions of the diffractive optical elements may focus the image light to the subpixels of the imaging pixels.
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公开(公告)号：US11815853B2
公开(公告)日：2023-11-14
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
CPC classification number: G03H1/0248 , G02B27/0025 , G02B27/0172 , G03H1/18 , G02B2027/0174 , G02B2027/0178 , G03H2001/185
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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Patent Agency Ranking
公开(公告)号：US11635669B1
公开(公告)日：2023-04-25
申请号：US17005247
申请日：2020-08-27
Applicant: Meta Platforms Technologies, LLC
Inventor： Lu Lu , Hao Yu , Mengfei Wang , Junren Wang , Yun-Han Lee , Nicholas John Diorio , Barry David Silverstein
IPC: G02F1/29 , G02F1/1337
Abstract: A device includes a first substrate and a second substrate. The device also includes a birefringent medium layer disposed between the first substrate and the second substrate. Orientations of directors of optically anisotropic molecules included in the birefringent medium layer varying periodically with an in-plane pitch tunable by an external field to adjust a diffraction angle of a light beam diffracted by the birefringent medium layer.
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公开(公告)号：US11598919B2
公开(公告)日：2023-03-07
申请号：US17063190
申请日：2020-10-05
Applicant: Meta Platforms Technologies, LLC
Inventor： Yingfei Jiang , Lu Lu , Hao Yu
Abstract: An optical assembly may include a waveguide and a Bragg grating configured to couple light into or out of the waveguide. The Bragg grating may include a plurality of layer pairs, wherein at least one layer pair comprises a first material having a first refractive index and a second layer having a second refractive index, and wherein properties of the Bragg grating are selected so that the Bragg grating exhibits a substantially similar diffractive efficiency and diffraction angle for light of at least two colors.
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公开(公告)号：US12092850B2
公开(公告)日：2024-09-17
申请号：US17073249
申请日：2020-10-16
Applicant: META PLATFORMS TECHNOLOGIES, LLC
Inventor： Lu Lu , Xiayu Feng , Mengfei Wang , Hao Yu , Ryan Li , Yun-Han Lee , Junren Wang , Barry David Silverstein
CPC classification number: G02B5/32 , G02B5/203 , G02B5/3016 , G03H1/0248 , G03H1/0402 , G03H2001/0413 , G03H2001/0439 , G03H2260/12
Abstract: A first layer of anisotropic material extends along a first plane and includes anisotropic components being parallel to a second plane non-parallel and non-perpendicular to the first plane. The anisotropic components are arranged in cycloidal or helical patterns. The cycloidal or helical patterns define one or more Bragg planes that are non-parallel and non-perpendicular to the first plane and either substantially parallel or substantially perpendicular to the second plane.
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公开(公告)号：US11619815B2
公开(公告)日：2023-04-04
申请号：US16733092
申请日：2020-01-02
Applicant: META PLATFORMS TECHNOLOGIES, LLC
Inventor： Gang Li , Changwon Jang , Giseung Bang , Andrew Maimone , Mengfei Wang , Afsoon Jamali , Lu Lu , Hao Yu
IPC: G02B27/01
Abstract: An optical assembly includes a beam steering device and a holographic optical element. The beam steering device is switchable between different states including a first state and a second state. The beam steering device includes a first polarization-selective optical element and a first tunable optical retarder optically coupled with the first polarization-selective optical element. The holographic optical element is positioned relative to the beam steering device for receiving light from the beam steering device and projecting a first light pattern while the beam steering device is in the first state and a second light pattern distinct from the first light pattern while the beam steering device is in the second state.
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公开(公告)号：US20230008674A1
公开(公告)日：2023-01-12
申请号：US17850898
申请日：2022-06-27
Applicant: Meta Platforms Technologies, LLC
Inventor： Qing Chao , Hao Yu , Lu Lu , Scott Charles McEldowney , Xinqiao Liu , Eric Fest
Abstract: An image sensor includes imaging pixels and a patterned liquid crystal polarizer (LCP). The imaging pixel include subpixels. The patterned LCP is disposed over the subpixels and configured to direct a particular polarized portion of imaging light to particular subpixels.
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