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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：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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