Patents by Inventor Yueai Liu

Yueai Liu 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).

  • Publication number: 20240024094
    Abstract: A method and system provide an ophthalmic device. The ophthalmic device includes an ophthalmic lens having an anterior surface, a posterior surface, at least one diffractive structure and at least one base curvature. The at least one diffractive structure for provides a first spherical aberration for a first focus corresponding to at least a first focal length. The at least one base curvature provides a second spherical aberration for at least a second focus corresponding to at least a second focal length. The first spherical aberration and the second spherical aberration are provided such that the first focus has a first focus spherical aberration and the second focus has a second focus spherical aberration. The first focus spherical aberration is opposite in sign to the second focus spherical aberration.
    Type: Application
    Filed: October 2, 2023
    Publication date: January 25, 2024
    Inventors: Myoung-Taek CHOI, Xin HONG, Yueai LIU
  • Publication number: 20240000561
    Abstract: An ophthalmic lens comprising an anterior surface and a posterior surface, at least one of the anterior surface and posterior surface including a first surface region corresponding to a photopic aperture of a pupil and a second surface region corresponding to a difference between the photopic aperture and a mesopic aperture of the pupil. A first microstructure pattern formed in a the first surface region, the first microstructure pattern introducing a phase perturbation into an optical path of incoming light such that a full depth of focus for photopic vision is provided.
    Type: Application
    Filed: July 24, 2023
    Publication date: January 4, 2024
    Inventor: Yueai LIU
  • Patent number: 11813160
    Abstract: A method and system provide an ophthalmic device. The ophthalmic device includes an ophthalmic lens having an anterior surface, a posterior surface, at least one diffractive structure and at least one base curvature. The at least one diffractive structure for provides a first spherical aberration for a first focus corresponding to at least a first focal length. The at least one base curvature provides a second spherical aberration for at least a second focus corresponding to at least a second focal length. The first spherical aberration and the second spherical aberration are provided such that the first focus has a first focus spherical aberration and the second focus has a second focus spherical aberration. The first focus spherical aberration is opposite in sign to the second focus spherical aberration.
    Type: Grant
    Filed: May 23, 2022
    Date of Patent: November 14, 2023
    Assignee: Alcon Inc.
    Inventors: Myoung-Taek Choi, Xin Hong, Yueai Liu
  • Patent number: 11751990
    Abstract: An ophthalmic lens comprising an anterior surface and a posterior surface, at least one of the anterior surface and posterior surface including a first surface region corresponding to a photopic aperture of a pupil and a second surface region corresponding to a difference between the photopic aperture and a mesopic aperture of the pupil. A first microstructure pattern formed in a the first surface region, the first microstructure pattern introducing a phase perturbation into an optical path of incoming light such that a full depth of focus for photopic vision is provided.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: September 12, 2023
    Assignee: Alcon Inc.
    Inventor: Yueai Liu
  • Publication number: 20230277301
    Abstract: A method and system provide a multifocal ophthalmic device. The ophthalmic lens has an anterior surface, a posterior surface and at least one diffractive structure including a plurality of echelettes. The echelettes have at least one step height of at least one wavelength and not more than two wavelengths in optical path length. The diffractive structure(s) reside on at least one of the anterior surface and the posterior surface. The diffractive structure(s) provide a plurality of focal lengths for the ophthalmic lens.
    Type: Application
    Filed: May 10, 2023
    Publication date: September 7, 2023
    Inventors: Myoung-Taek Choi, Xin Hong, Yueai Liu
  • Patent number: 11684469
    Abstract: A method and system provide a multifocal ophthalmic device. The ophthalmic lens has an anterior surface, a posterior surface and at least one diffractive structure including a plurality of echelettes. The echelettes have at least one step height of at least one wavelength and not more than two wavelengths in optical path length. The diffractive structure(s) reside on at least one of the anterior surface and the posterior surface. The diffractive structure(s) provide a plurality of focal lengths for the ophthalmic lens.
    Type: Grant
    Filed: April 6, 2021
    Date of Patent: June 27, 2023
    Assignee: Alcon Inc.
    Inventors: Myoung-Taek Choi, Xin Hong, Yueai Liu
  • Publication number: 20220280284
    Abstract: A method and system provide an ophthalmic device. The ophthalmic device includes an ophthalmic lens having an anterior surface, a posterior surface, at least one diffractive structure and at least one base curvature. The at least one diffractive structure for provides a first spherical aberration for a first focus corresponding to at least a first focal length. The at least one base curvature provides a second spherical aberration for at least a second focus corresponding to at least a second focal length. The first spherical aberration and the second spherical aberration are provided such that the first focus has a first focus spherical aberration and the second focus has a second focus spherical aberration. The first focus spherical aberration is opposite in sign to the second focus spherical aberration.
    Type: Application
    Filed: May 23, 2022
    Publication date: September 8, 2022
    Inventors: MYOUNG-TAEK CHOI, XIN HONG, YUEAI LIU
  • Patent number: 11364111
    Abstract: A method and system provide an ophthalmic device. The ophthalmic device includes an ophthalmic lens having an anterior surface, a posterior surface, at least one diffractive structure and at least one base curvature. The at least one diffractive structure for provides a first spherical aberration for a first focus corresponding to at least a first focal length. The at least one base curvature provides a second spherical aberration for at least a second focus corresponding to at least a second focal length. The first spherical aberration and the second spherical aberration are provided such that the first focus has a first focus spherical aberration and the second focus has a second focus spherical aberration. The first focus spherical aberration is opposite in sign to the second focus spherical aberration.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: June 21, 2022
    Assignee: Alcon Inc.
    Inventors: Myoung-Taek Choi, Xin Hong, Yueai Liu
  • Publication number: 20220133469
    Abstract: A diffractive quint focal intraocular lens includes a base optic and a diffractive element. The base optic has a base curvature that corresponds to a base power. The diffractive element provides constructive interference in at least five consecutive diffractive orders to create a set of five focal points for vision from near to distance. The constructive interference provides for a near focal point at the highest diffractive order of the five consecutive diffractive orders, a distance focal point at the lowest diffractive order, and three intermediate diffractive orders between the highest and lowest diffractive orders to provide continuity of vision from near to distance with an extended intermediate, an intermediate, and an extended near focal points. The multifocal intraocular lens (i) provides a diffraction efficiency of ?100%, (ii) creates almost no positive optical disturbance, (iii) may also reduce longitudinal chromatic aberration.
    Type: Application
    Filed: February 20, 2020
    Publication date: May 5, 2022
    Applicant: AAREN SCIENTIFIC INC.
    Inventor: Yueai LIU
  • Publication number: 20210228338
    Abstract: A multifocal ophthalmic lens includes an ophthalmic lens and a diffractive element. The ophthalmic lens has a base curvature corresponding to a base power. The diffractive element produces constructive interference in at least four consecutive diffractive orders corresponding a range of vision between near and distance vision. The constructive interference produces a near focus, a distance focus corresponding to the base power of the ophthalmic lens, and an intermediate focus between the near focus and the distance focus. A diffraction efficiency of at least one of the diffractive orders is suppressed to less than ten percent.
    Type: Application
    Filed: April 9, 2021
    Publication date: July 29, 2021
    Inventors: MYOUNG-TAEK CHOI, XIN HONG, YUEAI LIU
  • Publication number: 20210220120
    Abstract: A multifocal ophthalmic lens includes an ophthalmic lens and a diffractive element. The ophthalmic lens has a base curvature corresponding to a base power. The diffractive element produces constructive interference in at least four consecutive diffractive orders corresponding a range of vision between near and distance vision. The constructive interference produces a near focus, a distance focus corresponding to the base power of the ophthalmic lens, and an intermediate focus between the near focus and the distance focus.
    Type: Application
    Filed: April 9, 2021
    Publication date: July 22, 2021
    Inventors: MYOUNG-TAEK CHOI, XIN HONG, YUEAI LIU
  • Publication number: 20210220118
    Abstract: A method and system provide a multifocal ophthalmic device. The ophthalmic lens has an anterior surface, a posterior surface and at least one diffractive structure including a plurality of echelettes. The echelettes have at least one step height of at least one wavelength and not more than two wavelengths in optical path length. The diffractive structure(s) reside on at least one of the anterior surface and the posterior surface. The diffractive structure(s) provide a plurality of focal lengths for the ophthalmic lens.
    Type: Application
    Filed: April 6, 2021
    Publication date: July 22, 2021
    Inventors: Myoung-Taek Choi, Xin Hong, Yueai Liu
  • Patent number: 11000365
    Abstract: A multifocal ophthalmic lens includes an ophthalmic lens and a diffractive element. The ophthalmic lens has a base curvature corresponding to a base power. The diffractive element produces constructive interference in at least four consecutive diffractive orders corresponding a range of vision between near and distance vision. The constructive interference produces a near focus, a distance focus corresponding to the base power of the ophthalmic lens, and an intermediate focus between the near focus and the distance focus. A diffraction efficiency of at least one of the diffractive orders is suppressed to less than ten percent.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: May 11, 2021
    Assignee: Alcon Inc.
    Inventors: Myoung-Taek Choi, Xin Hong, Yueai Liu
  • Patent number: 11000366
    Abstract: A multifocal ophthalmic lens includes an ophthalmic lens and a diffractive element. The ophthalmic lens has a base curvature corresponding to a base power. The diffractive element produces constructive interference in at least four consecutive diffractive orders corresponding a range of vision between near and distance vision. The constructive interference produces a near focus, a distance focus corresponding to the base power of the ophthalmic lens, and an intermediate focus between the near focus and the distance focus.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: May 11, 2021
    Assignee: Alcon Inc.
    Inventors: Myoung-Taek Choi, Xin Hong, Yueai Liu
  • Patent number: 10993798
    Abstract: A method and system provide a multifocal ophthalmic device. The ophthalmic lens has an anterior surface, a posterior surface and at least one diffractive structure including a plurality of echelettes. The echelettes have at least one step height of at least one wavelength and not more than two wavelengths in optical path length. The diffractive structure(s) reside on at least one of the anterior surface and the posterior surface. The diffractive structure(s) provide a plurality of focal lengths for the ophthalmic lens.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: May 4, 2021
    Assignee: Alcon Inc.
    Inventors: Myoung-Taek Choi, Xin Hong, Yueai Liu
  • Publication number: 20200253722
    Abstract: A method and system provide an ophthalmic device. The ophthalmic device includes an ophthalmic lens having an anterior surface, a posterior surface, at least one diffractive structure and at least one base curvature. The at least one diffractive structure for provides a first spherical aberration for a first focus corresponding to at least a first focal length. The at least one base curvature provides a second spherical aberration for at least a second focus corresponding to at least a second focal length. The first spherical aberration and the second spherical aberration are provided such that the first focus has a first focus spherical aberration and the second focus has a second focus spherical aberration. The first focus spherical aberration is opposite in sign to the second focus spherical aberration.
    Type: Application
    Filed: May 1, 2020
    Publication date: August 13, 2020
    Inventors: MYOUNG-TAEK CHOI, XIN HONG, YUEAI LIU
  • Patent number: 10675146
    Abstract: A method and system provide an ophthalmic device. The ophthalmic device includes an ophthalmic lens having an anterior surface, a posterior surface, at least one diffractive structure and at least one base curvature. The at least one diffractive structure for provides a first spherical aberration for a first focus corresponding to at least a first focal length. The at least one base curvature provides a second spherical aberration for at least a second focus corresponding to at least a second focal length. The first spherical aberration and the second spherical aberration are provided such that the first focus has a first focus spherical aberration and the second focus has a second focus spherical aberration. The first focus spherical aberration is opposite in sign to the second focus spherical aberration.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: June 9, 2020
    Assignee: Alcon Inc.
    Inventors: Myoung-Taek Choi, Xin Hong, Yueai Liu
  • Publication number: 20200121448
    Abstract: An intraocular lens including an optic zone and a modulated surface profile formed in the optic zone and configured to focus incident light at a plurality of focal points, wherein the modulated surface profile is incorporated with a base surface profile of the optic zone.
    Type: Application
    Filed: October 17, 2019
    Publication date: April 23, 2020
    Inventors: MYOUNG-TAEK CHOI, GANG HUANG, YUEAI LIU, MICHAEL LEE MANGUM, ZEYU ZHAO
  • Publication number: 20190365528
    Abstract: A method and system provide a multifocal ophthalmic device. The ophthalmic lens has an anterior surface, a posterior surface and at least one diffractive structure including a plurality of echelettes. The echelettes have at least one step height of at least one wavelength and not more than two wavelengths in optical path length. The diffractive structure(s) reside on at least one of the anterior surface and the posterior surface. The diffractive structure(s) provide a plurality of focal lengths for the ophthalmic lens.
    Type: Application
    Filed: August 15, 2019
    Publication date: December 5, 2019
    Inventors: Myoung-Taek Choi, Xin Hong, Yueai Liu
  • Publication number: 20190314148
    Abstract: An ophthalmic lens comprising an anterior surface and a posterior surface, at least one of the anterior surface and posterior surface including a first surface region corresponding to a photopic aperture of a pupil and a second surface region corresponding to a difference between the photopic aperture and a mesopic aperture of the pupil. A first microstructure pattern formed in a the first surface region, the first microstructure pattern introducing a phase perturbation into an optical path of incoming light such that a full depth of focus for photopic vision is provided.
    Type: Application
    Filed: April 11, 2019
    Publication date: October 17, 2019
    Inventor: Yueai Liu