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公开(公告)号：US12025812B2
公开(公告)日：2024-07-02
申请号：US18220764
申请日：2023-07-11
Applicant: President and Fellows of Harvard College
Inventor： Francesco Aieta , Mikhail Kats , Patrice Genevet , Federico Capasso , Mohammadreza Khorasaninejad
CPC classification number: G02B27/4211 , G02B1/002 , G02B5/008 , G02B5/203 , H01Q15/10 , G02B5/1809
Abstract: Multi-wavelength light is directed to an optic including a substrate and metasurface optical components deposited on a surface of the substrate. The metasurface optical components comprise a pattern of silicon dielectric resonators with nonperiodic gap distances between adjacent dielectric resonators. Incident light directed to the metasurface optical components is scattered and phase-shifted by the configuration of the gap distances and the widths and thicknesses of the dielectric resonators. Each dielectric resonator has a rectangular cross-section such that a first phase shift is imparted for a transverse-electric (TE) component of the incident light and a second phase shift is imparted for a transverse-magnetic (TM) component of the incident light.
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公开(公告)号：US20190137075A1
公开(公告)日：2019-05-09
申请号：US16172274
申请日：2018-10-26
Applicant: President and Fellows of Harvard College
Inventor： Francesco Aieta , Federico Capasso
IPC: F21V5/04 , G02B27/30 , B82Y20/00 , F21K9/64 , F21V5/00 , G02B19/00 , H01Q15/00 , G02B1/00 , G02B5/18
CPC classification number: B82Y20/00 , F21K9/64 , F21V5/002 , F21V5/045 , F21V5/046 , F21Y2101/00 , G02B1/002 , G02B1/005 , G02B1/007 , G02B5/1809 , G02B5/1876 , G02B19/0014 , G02B19/0052 , G02B27/30 , G02B2207/101 , H01Q15/0086
Abstract: Lighting devices including metalenses are disclosed. In some embodiments, the metalenses are in the form of a hybrid multi-region collimating metalens that includes a first region and a second region, wherein the hybrid multi-region collimating metalens is configured to collimate (e.g., visible) light incident thereon. In some instances the first region includes an array of first unit cells that contain sub-wavelength spaced nanostructures, such that the first region functions as a sub-wavelength high contrast grating (SWHCG), whereas the second region includes an array of second unit cell, wherein the array of second unit cells includes a near periodic annular arrangement of nanostructures such that the second region approximates the functionality of a locally periodic radial diffraction grating.
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公开(公告)号：US10408419B2
公开(公告)日：2019-09-10
申请号：US16172274
申请日：2018-10-26
Applicant: President and Fellows of Harvard College
Inventor： Francesco Aieta , Federico Capasso
IPC: G02F1/35 , F21V5/04 , G02B5/18 , G02B1/00 , G02B27/30 , G02B19/00 , F21V5/00 , F21K9/64 , B82Y20/00 , H01Q15/00 , F21Y101/00
Abstract: Lighting devices including metalenses are disclosed. In some embodiments, the metalenses are in the form of a hybrid multi-region collimating metalens that includes a first region and a second region, wherein the hybrid multi-region collimating metalens is configured to collimate (e.g., visible) light incident thereon. In some instances the first region includes an array of first unit cells that contain sub-wavelength spaced nanostructures, such that the first region functions as a sub-wavelength high contrast grating (SWHCG), whereas the second region includes an array of second unit cell, wherein the array of second unit cells includes a near periodic annular arrangement of nanostructures such that the second region approximates the functionality of a locally periodic radial diffraction grating.
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公开(公告)号：US11733535B2
公开(公告)日：2023-08-22
申请号：US17029157
申请日：2020-09-23
Applicant: President and Fellows of Harvard College
Inventor： Francesco Aieta , Mikhail Kats , Patrice Genevet , Federico Capasso , Mohammadreza Khorasaninejad
CPC classification number: G02B27/4211 , G02B1/002 , G02B5/008 , G02B5/203 , H01Q15/10 , G02B5/1809
Abstract: Multi-wavelength light is directed to an optic including a substrate and achromatic metasurface optical components deposited on a surface of the substrate. The achromatic metasurface optical components comprise a pattern of dielectric resonators. The dielectric resonators have nonperiodic gap distances between adjacent dielectric resonators; and each dielectric resonator has a width, w, that is distinct from the width of other dielectric resonators. A plurality of wavelengths of interest selected from the wavelengths of the multi-wavelength light are deflected with the achromatic metasurface optical components at a shared angle or to or from a focal point at a shared focal length.
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Patent Agency Ranking
公开(公告)号：US20210109364A1
公开(公告)日：2021-04-15
申请号：US17029157
申请日：2020-09-23
Applicant: President and Fellows of Harvard College
Inventor： Francesco Aieta , Mikhail Kats , Patrice Genevet , Federico Capasso , Mohammadreza Khorasaninejad
Abstract: Multi-wavelength light is directed to an optic including a substrate and achromatic metasurface optical components deposited on a surface of the substrate. The achromatic metasurface optical components comprise a pattern of dielectric resonators. The dielectric resonators have nonperiodic gap distances between adjacent dielectric resonators; and each dielectric resonator has a width, w, that is distinct from the width of other dielectric resonators. A plurality of wavelengths of interest selected from the wavelengths of the multi-wavelength light are deflected with the achromatic metasurface optical components at a shared angle or to or from a focal point at a shared focal length.
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公开(公告)号：US10816815B2
公开(公告)日：2020-10-27
申请号：US15534642
申请日：2015-12-10
Applicant: President and Fellows of Harvard College
Inventor： Francesco Aieta , Mikhail Kats , Patrice Genevet , Federico Capasso , Mohammadreza Khorasaninejad
Abstract: Multi-wavelength light is directed to an optic including a substrate and achromatic metasurface optical components deposited on a surface of the substrate. The achromatic metasurface optical components comprise a pattern of dielectric resonators. The dielectric resonators have distances between adjacent dielectric resonators; and each dielectric resonator has a width, w, that is distinct from the width of other dielectric resonators. A plurality of wavelengths of interest selected from the wavelengths of the multi-wavelength light are deflected with the achromatic metasurface optical components at a shared angle or to or from a focal point at a shared focal length.
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公开(公告)号：US20190086683A1
公开(公告)日：2019-03-21
申请号：US15534642
申请日：2015-12-10
Applicant: President and Fellows of Harvard College
Inventor： Francesco Aieta , Mikhail Kats , Patrice Genevet , Federico Capasso , Mohammadreza Khorasaninejad
CPC classification number: G02B27/4211 , G02B1/002 , G02B5/008 , G02B5/1809 , G02B5/203 , H01Q15/10
Abstract: Multi-wavelength light is directed to an optic including a substrate and achromatic metasurface optical components deposited on a surface of the substrate. The achromatic metasurface optical components comprise a pattern of dielectric resonators. The dielectric resonators have distances between adjacent dielectric resonators; and each dielectric resonator has a width, w, that is distinct from the width of other dielectric resonators. A plurality of wavelengths of interest selected from the wavelengths of the multi-wavelength light are deflected with the achromatic metasurface optical components at a shared angle or to or from a focal point at a shared focal length.
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公开(公告)号：US20240427163A1
公开(公告)日：2024-12-26
申请号：US18668334
申请日：2024-05-20
Applicant: President and Fellows of Harvard College
Inventor： Francesco Aieta , Mikhail Kats , Patrice Genevet , Federico Capasso , Mohammadreza Khorasaninejad
Abstract: Metasurface optical components deposited on the surface of a substrate are used to alter incident light. The metasurface optical components comprise a pattern of silicon dielectric resonators that have nonperiodic gap distances between adjacent silicon dielectric resonators; and each silicon dielectric resonator is an elongated rectangular prism that has a width, a length, and a thickness. Incident light is directed to the metasurface optical components, wherein the gap distances, the widths, and the thicknesses are configured to scatter the incident light and impart a phase shift, ranging at least from 0 to 2π, on an outgoing light. Each dielectric resonator has a rectangular cross-section in a plane perpendicular to the substrate surface such that a first phase shift is imparted for a transverse-electric (TE) component of the incident light and a second phase shift is imparted for a transverse-magnetic (TM) component of the incident light.
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公开(公告)号：US20240118554A1
公开(公告)日：2024-04-11
申请号：US18220764
申请日：2023-07-11
Applicant: President and Fellows of Harvard College
Inventor： Francesco Aieta , Mikhail Kats , Patrice Genevet , Federico Capasso , Mohammadreza Khorasaninejad
CPC classification number: G02B27/4211 , G02B1/002 , G02B5/008 , G02B5/203 , H01Q15/10 , G02B5/1809
Abstract: Multi-wavelength light is directed to an optic including a substrate and metasurface optical components deposited on a surface of the substrate. The metasurface optical components comprise a pattern of silicon dielectric resonators with nonperiodic gap distances between adjacent dielectric resonators. Incident light directed to the metasurface optical components is scattered and phase-shifted by the configuration of the gap distances and the widths and thicknesses of the dielectric resonators. Each dielectric resonator has a rectangular cross-section such that a first phase shift is imparted for a transverse-electric (TE) component of the incident light and a second phase shift is imparted for a transverse-magnetic (TM) component of the incident light.
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