-
1.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
Applicant: University of Washington
Inventor： Shane Colburn , Arka Majumdar
Abstract: 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：US11550084B2
公开(公告)日：2023-01-10
申请号：US16850966
申请日：2020-04-16
Applicant: University of Washington
Inventor： Alan Zhan , Shane Colburn , Arka Majumdar
Abstract: 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.
-
3.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
Applicant: University of Washington
Inventor： Shane Colburn , Arka Majumdar
Abstract: 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：US20250150696A1
公开(公告)日：2025-05-08
申请号：US18935984
申请日：2024-11-04
Inventor： Praneeth Chakravarthula , Johannes Emanuel Froch , Felix Heide , Arka Majumdar , Jipeng Sun
Abstract: A flat nanophotonic computational camera, which employs an array of skewed lenslets (meta-optics) and a learned reconstruction approach is disclosed herein. The optical array is embedded on a metasurface that with a height of approximately one micron, is flat and sits on the sensor cover glass at approximately 2.5 mm focal distance from the sensor. A differentiable optimization method continuously samples over the visible spectrum and factorizes the optical modulation for different incident fields into individual lenses. A megapizel image is reconstructed from a flat imager with a learned probabilistic reconstruction method that employs a generative diffusion model to sample an implicit prior. A method for acquiring paired captured training data in varying illumination conditions is proposed. The proposed flat camera design is assessed in simulation and with an experimental prototype, validating that the method is capable of recovering images from diverse scenes in broadband with a single nanophotonic layer.
-
公开(公告)号：US12061347B2
公开(公告)日：2024-08-13
申请号：US16965899
申请日：2019-01-29
Applicant: University of Washington
Inventor： Shane Colburn , Alan Zhan , Arka Majumdar
CPC classification number: G02B3/0056 , G02B27/0075 , G02B27/4211 , H04N9/03 , H04N23/67
Abstract: 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.
-
Patent Agency Ranking
公开(公告)号：US20240334034A1
公开(公告)日：2024-10-03
申请号：US18357919
申请日：2022-02-04
Inventor： Arka Majumdar , Shane Colburn , James Whitehead , Luocheng Huang , Ethan Tseng , Seung-Hwan Baek , Felix Heide
Abstract: 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.
-
公开(公告)号：US20210037219A1
公开(公告)日：2021-02-04
申请号：US16965899
申请日：2019-01-29
Applicant: University of Washington
Inventor： Shane Colburn , Alan Zhan , Arka Majumdar
Abstract: 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.
-
公开(公告)号：US10670783B2
公开(公告)日：2020-06-02
申请号：US16523868
申请日：2019-07-26
Applicant: University of Washington
Inventor： Alan Zhan , Shane Colburn , Arka Majumdar
Abstract: 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：US10365416B2
公开(公告)日：2019-07-30
申请号：US15758686
申请日：2016-09-08
Applicant: University of Washington
Inventor： Alan Zhan , Shane Colburn , Arka Majumdar
Abstract: 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：US20250130444A1
公开(公告)日：2025-04-24
申请号：US18788492
申请日：2024-07-30
Applicant: UNIVERSITY OF WASHINGTON
Inventor： Virat Tara , Anna-Wirth Singh , Abhi Saxena , Johannes Emanuel Fröch , Matthew S. Reynolds , Rui Chen , Arka Majumdar
Abstract: Spatial light modulators and associated methods are described. In one embodiment, a spatial light modulator includes a photonic integrated circuit configured for emitting a plurality of light beams as a first waveform by a plurality of pixels. The light beams are individually controllable. The spatial light modulator also includes a meta-optic having a plurality of nanostructures configured for receiving the first waveform and aggregating the plurality of light beams as a second waveform at a surface of the meta-optic. The spatial light modulator also includes an aperture array configured for converting the second waveform into a third waveform, where the third waveform is smaller than the second waveform.
-
-
-
-
-
-
-
-
-
Search Results
14
records
(took 0.016 seconds)
