Patents by Inventor Arka MAJUMDAR
Arka MAJUMDAR has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240085241Abstract: In an embodiment, an apparatus includes a meta-optics lens having a point spread function. The meta-optics lens is configured to receive light associated with a scene and output transformed light. At least one value of at least one mathematical property of the transformed light is dependent upon a set of wavelengths associated with the transformed light. The apparatus further includes a processor configured to receive a representation of the transformed light. The processor is further configured to determine the at least one value of the at least one mathematical property of the transformed light using the representation of the transformed light. The processor is further configured to determine spectrum information associated with the scene based on the at least one value and the point spread function.Type: ApplicationFiled: September 9, 2022Publication date: March 14, 2024Inventors: Alan ZHAN, Shane Alexander COLBURN, Arka MAJUMDAR
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Patent number: 11640040Abstract: Systems and methods for simultaneous focal length control and achromatic computational imaging with quartic metasurfaces are disclosed herein. In one embodiment, an imaging system includes: a first metalens having a plurality of first nanoposts carried by a first substrate; a second metalens having a plurality of second nanoposts carried by a second substrate; and a source of light configured to emit light toward the first metalens and the second metalens. The first metalens is transversely offset with respect to the second metalens.Type: GrantFiled: January 25, 2021Date of Patent: May 2, 2023Assignee: University of WashingtonInventors: Shane Colburn, Arka Majumdar
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Patent number: 11550084Abstract: Disclosed herein are metasurfaces formed on a substrate from a plurality of posts. The metasurfaces are configured to be optically active at one or more wavelengths and in certain embodiments are configured to form lenses having unexpectedly strong focusing power. In particular, the metasurfaces are formed from “low-contrast” materials, including CMOS-compatible materials such as silicon dioxide or silicon nitride. Accordingly, the disclosed metasurfaces are generally CMOS compatible and therefore embody a new paradigm in metasurface design and manufacturing.Type: GrantFiled: April 16, 2020Date of Patent: January 10, 2023Assignee: University of WashingtonInventors: Alan Zhan, Shane Colburn, Arka Majumdar
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Patent number: 11159059Abstract: Systems and methods for wirelessly transmitting power across a room or space are disclosed herein. One such system is comprised of a power receiving element positioned to receive wireless power transfer, comprised of a power receiving cell and a retroreflector positioned proximate the power receiving cell, and a power transmission element configured to wirelessly transmit power towards the power receiving element. The power transmission element includes an optical power transmitter configured to emit a first laser beam with a first power density towards the receiving cell, a guard beam emitter positioned proximate the optical power transmitter and configured to emit a second laser beam with a second power density towards the retroreflectors, a light detector positioned proximate the guard beam emitter and configured to detect light reflected by the retroreflectors, and an interlock system configured to interrupt power transmission when a decrease in light incident from the retroreflectors is detected.Type: GrantFiled: November 21, 2019Date of Patent: October 26, 2021Assignee: University of WashingtonInventors: Shyamnath Gollakota, Vikram Subramaniam Iyer, Arka Majumdar, Elyas Bayati, Rajalakshmi Nandakumar
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Publication number: 20210231909Abstract: Systems and methods for simultaneous focal length control and achromatic computational imaging with quartic metasurfaces are disclosed herein. In one embodiment, an imaging system includes: a first metalens having a plurality of first nanoposts carried by a first substrate; a second metalens having a plurality of second nanoposts carried by a second substrate; and a source of light configured to emit light toward the first metalens and the second metalens. The first metalens is transversely offset with respect to the second metalens.Type: ApplicationFiled: January 25, 2021Publication date: July 29, 2021Applicant: University of WashingtonInventors: Shane Colburn, Arka Majumdar
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Publication number: 20210037219Abstract: Metasurfaces and systems including metasurfaces for imaging and methods of imaging are described. Such metasurfaces may be formed on a substrate from a plurality of posts. The metasurfaces are configured to be optically active over a wavelength range and in certain embodiments are configured to form lenses. In particular, the metasufaces described herein may be configured to focus light passed through the metasurface in an extended depth of focus. Accordingly, the disclosed metasurfaces are generally suitable for generating color without or with minimal chromatic aberrations, for example, in conjunction with computational reconstruction.Type: ApplicationFiled: January 29, 2019Publication date: February 4, 2021Applicant: University of WashingtonInventors: Shane Colburn, Alan Zhan, Arka Majumdar
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Publication number: 20200241182Abstract: Disclosed herein are metasurfaces formed on a substrate from a plurality of posts. The metasurfaces are configured to be optically active at one or more wavelengths and in certain embodiments are configured to form lenses having unexpectedly strong focusing power. In particular, the metasurfaces are formed from “low-contrast” materials, including CMOS-compatible materials such as silicon dioxide or silicon nitride. Accordingly, the disclosed metasurfaces are generally CMOS compatible and therefore embody a new paradigm in metasurface design and manufacturing.Type: ApplicationFiled: April 16, 2020Publication date: July 30, 2020Applicant: University of WashingtonInventors: Alan Zhan, Shane Colburn, Arka Majumdar
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Patent number: 10670783Abstract: Disclosed herein are metasurfaces formed on a substrate from a plurality of posts. The metasurfaces are configured to be optically active at one or more wavelengths and in certain embodiments are configured to form lenses having unexpectedly strong focusing power. In particular, the metasurfaces are formed from “low-contrast” materials, including CMOS-compatible materials such as silicon dioxide or silicon nitride. Accordingly, the disclosed metasurfaces are generally CMOS compatible and therefore embody a new paradigm in metasurface design and manufacturing.Type: GrantFiled: July 26, 2019Date of Patent: June 2, 2020Assignee: University of WashingtonInventors: Alan Zhan, Shane Colburn, Arka Majumdar
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Publication number: 20200161904Abstract: Systems and methods for wirelessly transmitting power across a room or space are disclosed herein. One such system is comprised of a power receiving element positioned to receive wireless power transfer, comprised of a power receiving cell and a retroreflector positioned proximate the power receiving cell, and a power transmission element configured to wirelessly transmit power towards the power receiving element. The power transmission element includes an optical power transmitter configured to emit a first laser beam with a first power density towards the receiving cell, a guard beam emitter positioned proximate the optical power transmitter and configured to emit a second laser beam with a second power density towards the retroreflectors, a light detector positioned proximate the guard beam emitter and configured to detect light reflected by the retroreflectors, and an interlock system configured to interrupt power transmission when a decrease in light incident from the retroreflectors is detected.Type: ApplicationFiled: November 21, 2019Publication date: May 21, 2020Inventors: Shyamnath Gollakota, Vikram Subramaniam Iyer, Arka Majumdar, Elyas Bayati, Rajalakshmi Nandakumar
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Publication number: 20200057182Abstract: Disclosed herein are metasurfaces formed on a substrate from a plurality of posts. The metasurfaces are configured to be optically active at one or more wavelengths and in certain embodiments are configured to form lenses having unexpectedly strong focusing power. In particular, the metasurfaces are formed from “low-contrast” materials, including CMOS-compatible materials such as silicon dioxide or silicon nitride. Accordingly, the disclosed metasurfaces are generally CMOS compatible and therefore embody a new paradigm in metasurface design and manufacturing.Type: ApplicationFiled: July 26, 2019Publication date: February 20, 2020Applicant: University of WashingtonInventors: Alan Zhan, Shane Colburn, Arka Majumdar
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Patent number: 10365416Abstract: Disclosed herein are metasurfaces formed on a substrate from a plurality of posts. The metasurfaces are configured to be optically active at one or more wavelengths and in certain embodiments are configured to form lenses having unexpectedly strong focusing power. In particular, the metasurfaces are formed from “low-contrast” materials, including CMOS-compatible materials such as silicon dioxide or silicon nitride. Accordingly, the disclosed metasurfaces are generally CMOS compatible and therefore embody a new paradigm in metasurface design and manufacturing.Type: GrantFiled: September 8, 2016Date of Patent: July 30, 2019Assignee: University of WashingtonInventors: Alan Zhan, Shane Colburn, Arka Majumdar
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Publication number: 20180246262Abstract: Disclosed herein are metasurfaces formed on a substrate from a plurality of posts. The metasurfaces are configured to be optically active at one or more wavelengths and in certain embodiments are configured to form lenses having unexpectedly strong focusing power. In particular, the metasurfaces are formed from “low-contrast” materials, including CMOS-compatible materials such as silicon dioxide or silicon nitride. Accordingly, the disclosed metasurfaces are generally CMOS compatible and therefor embody a new paradigm in metasurface design and manufacturing.Type: ApplicationFiled: September 8, 2016Publication date: August 30, 2018Applicant: University of WashingtonInventors: Alan ZHAN, Shane COLBURN, Arka MAJUMDAR