-
公开(公告)号：US20240334034A1
公开(公告)日：2024-10-03
申请号：US18357919
申请日：2022-02-04
发明人： Arka Majumdar , Shane Colburn , James Whitehead , Luocheng Huang , Ethan Tseng , Seung-Hwan Baek , Felix Heide
摘要： Metasurfaces and systems including metasurfaces for imaging and methods of imaging are described. In one embodiment, a method for acquiring images by an imaging system comprising a metalens includes: illuminating the metalens; acquiring light passing through the metalens as a first image by an image sensor; and processing the first image into a second image that is a deconvolved version of the first image by a post-processing engine. The metalens includes a plurality of nanoposts carried by a substrate.
-
2.发明授权公开(公告)号：US11640040B2
公开(公告)日：2023-05-02
申请号：US17157729
申请日：2021-01-25
发明人： Shane Colburn , Arka Majumdar
摘要： 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.
-
公开(公告)号：US12061347B2
公开(公告)日：2024-08-13
申请号：US16965899
申请日：2019-01-29
发明人： Shane Colburn , Alan Zhan , Arka Majumdar
CPC分类号： G02B3/0056 , G02B27/0075 , G02B27/4211 , H04N9/03 , H04N23/67
摘要： 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 metasurfaces 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.
-
公开(公告)号：US11550084B2
公开(公告)日：2023-01-10
申请号：US16850966
申请日：2020-04-16
发明人： Alan Zhan , Shane Colburn , Arka Majumdar
摘要： 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.
-
5.发明申请公开(公告)号：US20210231909A1
公开(公告)日：2021-07-29
申请号：US17157729
申请日：2021-01-25
发明人： Shane Colburn , Arka Majumdar
摘要： 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.
-
公开(公告)号：US11159059B2
公开(公告)日：2021-10-26
申请号：US16691202
申请日：2019-11-21
发明人： Shyamnath Gollakota , Vikram Subramaniam Iyer , Arka Majumdar , Elyas Bayati , Rajalakshmi Nandakumar
摘要： 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.
-
公开(公告)号：US20200241182A1
公开(公告)日：2020-07-30
申请号：US16850966
申请日：2020-04-16
发明人： Alan Zhan , Shane Colburn , Arka Majumdar
摘要： 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.
-
公开(公告)号：US20200161904A1
公开(公告)日：2020-05-21
申请号：US16691202
申请日：2019-11-21
发明人： Shyamnath Gollakota , Vikram Subramaniam Iyer , Arka Majumdar , Elyas Bayati , Rajalakshmi Nandakumar
摘要： 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.
-
公开(公告)号：US20200057182A1
公开(公告)日：2020-02-20
申请号：US16523868
申请日：2019-07-26
发明人： Alan Zhan , Shane Colburn , Arka Majumdar
摘要： 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.
-
公开(公告)号：US20210037219A1
公开(公告)日：2021-02-04
申请号：US16965899
申请日：2019-01-29
发明人： Shane Colburn , Alan Zhan , Arka Majumdar
摘要： 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.
-
-
-
-
-
-
-
-
-
搜索结果
12 条记录 (耗时 0.019 秒)
