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公开(公告)号：US20170030773A1
公开(公告)日：2017-02-02
申请号：US15221184
申请日：2016-07-27
Inventor： Seunghoon HAN , Amir ARBABI , Andrei FARAON , Ehsan ARBABI
CPC classification number: G01J3/0208 , B82Y20/00 , G01J3/0205 , G01J3/0224 , G01J3/0256 , G01J3/0259 , G01J3/2803 , G01J3/447
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.
Abstract translation: 光谱仪包括基板; 狭缝，其设置在所述基板上并且光入射到所述基板上; 包括纳米结构的分表，其被配置为基于相应波长以不同的角度反射和聚焦通过狭缝入射到其上的光; 以及传感器，其设置在所述基板的与所述基板的设置有所述元面的另一侧相反的一侧，并且被配置为接收来自所述分表面的光。
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公开(公告)号：US20190101448A1
公开(公告)日：2019-04-04
申请号：US16146523
申请日：2018-09-28
Inventor： Duhyun LEE , Andrei FARAON , Ehsan ARBABI , Sadegh FARAJI-DANA , Mahsa Seyedeh KAMALI , Yu HORIE , Chanwook BAIK
IPC: G01J4/04
Abstract: A polarimeter for measuring a polarization rotation caused by a measurement object is provided, the polarimeter including an optically active material. The polarimeter includes a light source unit for irradiating a measurement object with light having a specific polarization; an anisotropic meta surface element for splitting reaction light, obtained by reacting the light of the specific polarization irradiated by the light source unit with the measurement object, into first and second reaction light; and a detection unit for detecting the first and second reaction light separated by the anisotropic meta surface element according to polarization. The polarization rotation caused by the measurement object may be calculated by comparing detection signals of the first and second reaction light detected by the detection unit.
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公开(公告)号：US20200348500A1
公开(公告)日：2020-11-05
申请号：US16863181
申请日：2020-04-30
Applicant: California Institute of Technology
Inventor： Hyounghan KWON , Ehsan ARBABI , Andrei FARAON
Abstract: Quantitative phase gradient microscopes (QPGM) using metasurface layers including birefringent lenses are disclosed. The birefringent lenses are manufactured by patterning nanoposts on two different transparent substrates or on opposite sides of the same transparent substrate. Methods to generate phase gradient images (PGI) of objects using the described devices are also disclosed.
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公开(公告)号：US20200348176A1
公开(公告)日：2020-11-05
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：US20170212285A1
公开(公告)日：2017-07-27
申请号：US15410735
申请日：2017-01-19
Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
Inventor： Ehsan ARBABI , Amir ARBABI , Seyedeh Mahsa KAMALI , Yu HORIE , Andrei FARAON
CPC classification number: G02B5/1847 , G02B1/002 , G02B5/1876 , G02B27/0012 , G02B27/0056
Abstract: Metasurfaces comprise an array of pillars in a lattice. The dimensions of the pillars and the spacing are varied to obtain desired optical properties. The dispersionless metasurfaces can focus optical light over a broad wavelength range. Specific dispersion profiles for the metasurfaces can be designed. Gratings can be fabricated having similar properties as the array of pillars. Pillars in the metasurfaces can have different cross-section profiles.
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Patent Agency Ranking
公开(公告)号：US20220214219A1
公开(公告)日：2022-07-07
申请号：US16777491
申请日：2020-01-30
Applicant: California Institute of Technology
Inventor： Andrei FARAON , Seyedeh Mahsa KAMALI , Amir ARBABI , Ehsan ARBABI
Abstract: Metasurfaces for polarimetric imaging are disclosed. The described devices are built to split and focus light to various pixels on an image sensor for different polarization bases. This allows for complete characterization of polarization by measuring the four Stokes parameters over the area of each superpixel, which corresponds to the area of the pixels on the image sensor.
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公开(公告)号：US20190178714A1
公开(公告)日：2019-06-13
申请号：US16213810
申请日：2018-12-07
Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
Inventor： MohammadSadegh FARAJI-DANA , Ehsan ARBABI , Amir ARBABI , Andrei FARAON
Abstract: Compact optical devices such as spectrometers are realized with metasurfaces within a dielectric medium confined by reflective surfaces. The metasurfaces control the phase profiles of the reflected electromagnetic waves within the device. In a compact spectrometer, the metasurfaces within the device separate the electromagnetic waves in different wavelengths. The metasurfaces are designed according to their phase profile by varying the size of the array of scatterers.
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公开(公告)号：US20220393364A1
公开(公告)日：2022-12-08
申请号：US17843302
申请日：2022-06-17
Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
Inventor： Seyedeh Mahsa KAMALI , Ehsan ARBABI , Andrei FARAON
Abstract: Cascaded metasurfaces can control the phase, amplitude and polarization of an electromagnetic beam, shaping it in three dimensional configuration not achievable with other methods. Each cascaded metasurface has dielectric or metallic scatterers arranged in a period array. The shape of the scatterers determines the three dimensional configuration of the output beam and is determined with iterative calculations through computational simulations.
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公开(公告)号：US20200025975A1
公开(公告)日：2020-01-23
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：US20190173191A1
公开(公告)日：2019-06-06
申请号：US16209788
申请日：2018-12-04
Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
Inventor： Seyedeh Mahsa KAMALI , Ehsan ARBABI , Andrei FARAON
Abstract: Cascaded metasurfaces can control the phase, amplitude and polarization of an electromagnetic beam, shaping it in three dimensional configuration not achievable with other methods. Each cascaded metasurface has dielectric or metallic scatterers arranged in a period array. The shape of the scatterers determines the three dimensional configuration of the output beam and is determined with iterative calculations through computational simulations.
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