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公开(公告)号：US11187582B2
公开(公告)日：2021-11-30
申请号：US16831448
申请日：2020-03-26
Applicant: California Institute of Technology
Inventor： MohammadSadegh Faraji-Dana , Ehsan Arbabi , Andrei Faraon
Abstract: Hyperspectal imagers including reflective and transmissive metasurfaces are disclosed. The described metasurfaces are used collectively to disperse and focus light of different wavelengths and incident angles on a focal plane. The disclosed devices are compact and light, and can be used in systems and applications requiring stringent form factors.
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公开(公告)号：US09995859B2
公开(公告)日：2018-06-12
申请号：US15097101
申请日：2016-04-12
Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
Inventor： Seyedeh Mahsa Kamali , Ehsan Arbabi , Amir Arbabi , Andrei Faraon
CPC classification number: G02B5/0226 , G02B1/002 , G02B5/0263 , G02B5/0268 , G02B5/1876 , G02B27/0025 , G02B27/4211
Abstract: Structures for scattering light at multiple wavelengths are disclosed. Scattering elements are fabricated with different geometric dimensions and arrangements, to scatter or focus light at the the same focal distance for each wavelength, or at different focal distances according to the desired application. The scattering elements fabricated on a substrate can be peeled off with a polymer matrix and attached to a lens to modify the optical properties of the lens.
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公开(公告)号：US11867556B2
公开(公告)日：2024-01-09
申请号：US17486326
申请日：2021-09-27
Inventor： Seunghoon Han , Amir Arbabi , Andrei Faraon , Ehsan Arbabi
CPC classification number: G01J3/0208 , G01J3/0205 , G01J3/0224 , G01J3/0256 , G01J3/0259 , G01J3/2803 , G01J3/447 , B82Y20/00
Abstract: A spectrometer includes a transparent substrate including a first surface and a second surface that face each other and are substantially parallel to each other; a slit provided on the first surface and through which light is incident onto the transparent substrate; a spectrum optical system including metasurface including a plurality of nanostructures that are two-dimensionally arranged and satisfy a sub-wavelength scattering condition, wherein the metasurface includes a focusing metasurface which includes first nanostructures of the plurality of nanostructures, and is configured to reflect, disperse, and focus the light incident thereon through the slit, at different angles based on respective wavelengths; and a sensor configured to receive the light from the focusing metasurface. When L is a total length of an optical path from the slit to the sensor and D is a thickness of the transparent substrate, L and D satisfy the following inequality: L/D>3.
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Patent Agency Ranking
公开(公告)号：US10690809B2
公开(公告)日：2020-06-23
申请号：US16125546
申请日：2018-09-07
Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
Inventor： Seyedeh Mahsa Kamali , Ehsan Arbabi , Amir Arbabi , Yu Horie , MohammadSadegh Faraji-Dana , Andrei Faraon
Abstract: A metasurface is defined by an array of scattering elements having a U shape, where the geometrical dimensions determining the U shape are determined according to the different phase profiles that the metasurface is meant to generate in response to an incident electromagnetic wave. The metasurface, therefore, generates different phase shifts as a function of the incident electromagnetic wave.
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公开(公告)号：US20200072668A1
公开(公告)日：2020-03-05
申请号：US16677792
申请日：2019-11-08
Inventor： Seunghoon HAN , Amir Arbabi , Andrei Faraon , Ehsan Arbabi
Abstract: A spectrometer includes a substrate; a slit which is provided on the substrate and through which light is incident onto the substrate; a metasurface including nanostructures that is configured to reflect and focus the light incident thereon through the slit, at different angles based on respective wavelengths; and a sensor which is provided on one side of the substrate that is opposite to another side of the substrate at which the metasurface is disposed, and configured to receive the light from the metasurface.
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公开(公告)号：US10514296B2
公开(公告)日：2019-12-24
申请号：US15221184
申请日：2016-07-27
Inventor： Seunghoon Han , Amir Arbabi , Andrei Faraon , Ehsan Arbabi
Abstract: A spectrometer includes a substrate; a slit which is provided on the substrate and through which light is incident onto the substrate; a metasurface including nanostructures that is configured to reflect and focus the light incident thereon through the slit, at different angles based on respective wavelengths; and a sensor which is provided on one side of the substrate that is opposite to another side of the substrate at which the metasurface is disposed, and configured to receive the light from the metasurface.
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公开(公告)号：US10267957B2
公开(公告)日：2019-04-23
申请号：US15975521
申请日：2018-05-09
Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
Inventor： Seyedeh Mahsa Kamali , Ehsan Arbabi , Amir Arbabi , Andrei Faraon
Abstract: Structures for scattering light at multiple wavelengths are disclosed. Scattering elements are fabricated with different geometric dimensions and arrangements, to scatter or focus light at the same focal distance for each wavelength, or at different focal distances according to the desired application. The scattering elements fabricated on a substrate can be peeled off with a polymer matrix and attached to a lens to modify the optical properties of the lens.
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公开(公告)号：US10267956B2
公开(公告)日：2019-04-23
申请号：US15096615
申请日：2016-04-12
Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
Inventor： Ehsan Arbabi , Amir Arbabi , Andrei Faraon
Abstract: Structures for scattering light at multiple wavelengths are disclosed. Scattering elements are fabricated with different geometric dimensions and arrangements, to scatter or focus light at the same focal distance for each wavelength, or at different focal distances according to the desired application. Scattering elements can be circular or elliptical posts, allowing polarization dependent scattering. The elements can have different orientations to scatter light from multiple wavelengths at the desired focal length.
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