Patents by Inventor Klaus Ehrmann

Klaus Ehrmann 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: 20260147228
    Abstract: The present disclosure is directed to lens, methods of making, designing lens and/or methods using lens in which performance may be improved by providing one or more steps in the central portion of the optical zone and one or more steps in the peripheral portion of the optic zone. In some embodiments, such lens may be useful for correcting refractive error of an eye and/or for controlling eye growth.
    Type: Application
    Filed: June 30, 2025
    Publication date: May 28, 2026
    Inventors: Brien Anthony Holden, Padmaja Rajagopal Sankaridurg, Klaus Ehrmann, Fabian Conrad, Arthur Ho
  • Publication number: 20260133438
    Abstract: The present disclosure is directed generally to a lens that provides a stop signal to a myopic eye, over a substantial portion of the spectacle lens that the viewer is using. The present disclosure is directed to devices, methods and/or systems of imposing a stop signal to eye growth, using a spectacle lens in conjunction with a micro lenslet array. The present disclosure is also directed to devices, methods and/or systems of modifying incoming light through spectacle lenses that utilizes chromatic cues to decelerate the rate of myopia progression. The present disclosure is directed to devices, methods and/or systems of imposing a stop signal to eye growth, using a spectacle lens in conjunction with a refractive optical element and/or diffractive optical element that offer conflicting or contradictory optical signals at a wavelength between 510 nm and 610 nm.
    Type: Application
    Filed: July 24, 2025
    Publication date: May 14, 2026
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Cathleen Fedtke, Padmaja Sankaridurg, Arthur Ho
  • Patent number: 12498588
    Abstract: The present disclosure relates to means of managing eye-length disorders, like myopia. The invention includes an apparatus and methods for the prescription, selection, supply and fitting of permanent or impermanent optical films used in conjunction with standard single vision spectacles, wherein the apparatus and methods are configured with non-refractive opaque features, wherein the non-refractive opaque features facilitate an active rise in the overall retinal ganglion cell activity for the wearer, which may serve as an optical signal to decelerate, ameliorate, control, inhibit, or reduce the rate of myopia progression of the wearer.
    Type: Grant
    Filed: February 22, 2021
    Date of Patent: December 16, 2025
    Assignee: Nthalmic Holding Pty Ltd
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Darrin Falk
  • Publication number: 20250298260
    Abstract: The present disclosure generally relates to contact lenses for use with eyes experiencing eye-length related disorders, like myopia. This invention relates to contact lens for managing myopia wherein the contact lens comprises of an optical zone about an optical axis and a non-optical peripheral carrier zone about the optical zone; wherein the optical zone is configured with a substantially single vision power profile providing correction for the eye, and a decentred second region configured with an astigmatic, or toric, or asymmetric power distribution, the second region located substantially away from the optical centre and configured to provide at least in part a regional conoid or interval of Sturm producing an optical stop signal for the eye; and wherein the non-optical peripheral carrier zone is configured with a thickness profile that is substantially rotationally symmetric to further provide a temporally and spatially varying stop signals to reduce myopia progression.
    Type: Application
    Filed: June 6, 2025
    Publication date: September 25, 2025
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Fabian Conrad
  • Publication number: 20250291204
    Abstract: The present disclosure is directed to lenses, devices, methods and/or systems for addressing refractive error. Certain embodiments are directed to changing or controlling the wavefront of the light entering a human eye. The lenses, devices, methods and/or systems can be used for correcting, addressing, mitigating or treating refractive errors and provide excellent vision at distances encompassing far to near without significant ghosting. The refractive error may for example arise from myopia, hyperopia, or presbyopia with or without astigmatism. Certain disclosed embodiments of lenses, devices and/or methods include embodiments that address foveal and/or peripheral vision. Exemplary of lenses in the fields of certain embodiments include contact lenses, corneal onlays, corneal inlays, and lenses for intraocular devices both anterior and posterior chamber, accommodating intraocular lenses, electro-active spectacle lenses and/or refractive surgery.
    Type: Application
    Filed: April 10, 2025
    Publication date: September 18, 2025
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Arthur Ho, Brien Anthony Holden
  • Patent number: 12386203
    Abstract: The present disclosure is directed generally to a lens that provides a stop signal to a myopic eye, over a substantial portion of the spectacle lens that the viewer is using. The present disclosure is directed to devices, methods and/or systems of imposing a stop signal to eye growth, using a spectacle lens in conjunction with a micro lenslet array. The present disclosure is also directed to devices, methods and/or systems of modifying incoming light through spectacle lenses that utilizes chromatic cues to decelerate the rate of myopia progression. The present disclosure is directed to devices, methods and/or systems of imposing a stop signal to eye growth, using a spectacle lens in conjunction with a refractive optical element and/or diffractive optical element that offer conflicting or contradictory optical signals at a wavelength between 510 nm and 610 nm.
    Type: Grant
    Filed: December 5, 2023
    Date of Patent: August 12, 2025
    Assignee: Brien Holden Vision Institute Limited
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Cathleen Fedtke, Padmaja Sankaridurg, Arthur Ho
  • Patent number: 12372811
    Abstract: The present disclosure is directed to lens, methods of making, designing lens and/or methods using lens in which performance may be improved by providing one or more steps in the central portion of the optical zone and one or more steps in the peripheral portion of the optic zone. In some embodiments, such lens may be useful for correcting refractive error of an eye and/or for controlling eye growth.
    Type: Grant
    Filed: November 21, 2023
    Date of Patent: July 29, 2025
    Assignee: Brien Holden Vision Institute Limited
    Inventors: Brien Anthony Holden, Padmaja Rajagopal Sankaridurg, Klaus Ehrmann, Fabian Conrad, Arthur Ho
  • Patent number: 12360398
    Abstract: The present disclosure is directed to lenses, devices, methods and/or systems for addressing refractive error. Certain embodiments are directed to changing or controlling the wavefront of the light entering a human eye. The lenses, devices, methods and/or systems can be used for correcting, addressing, mitigating or treating refractive errors and provide excellent vision at distances encompassing far to near without significant ghosting. The refractive error may for example arise from myopia, hyperopia, or presbyopia with or without astigmatism. Certain disclosed embodiments of lenses, devices and/or methods include embodiments that address foveal and/or peripheral vision. Exemplary of lenses in the fields of certain embodiments include contact lenses, corneal onlays, corneal inlays, and lenses for intraocular devices both anterior and posterior chamber, accommodating intraocular lenses, electro-active spectacle lenses and/or refractive surgery.
    Type: Grant
    Filed: March 28, 2022
    Date of Patent: July 15, 2025
    Assignee: Brien Holden Vision Institute Limited
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Arthur Ho, Brien Anthony Holden
  • Publication number: 20250216701
    Abstract: Devices and/or systems are used to modify the incoming light through spectacle lenses that utilize at least one auxiliary or regional optical element, to provide extension or elongation of the depth of focus for a myopic eye. Methods are used to correct myopia and control or reduce the rate of myopia progression utilizing extension of the depth of focus provided by the at least one auxiliary or regional optical element configured within, or in conjunction, combination, or juxtaposition with spectacle lenses. An axicon, a light sword element, or a peacock eye element is provided within the regional optical element or a sub-lens. A plurality of axicons, light sword elements or peacock eye elements may be configured within, or in conjunction, combination, or juxtaposition with spectacle lenses.
    Type: Application
    Filed: March 18, 2025
    Publication date: July 3, 2025
    Inventors: Ravi Chandra BAKARAJU, Klaus EHRMANN
  • Patent number: 12345961
    Abstract: The present disclosure generally relates to contact lenses for use with eyes experiencing eye-length related disorders, like myopia. This invention relates to contact lens for managing myopia wherein the contact lens comprises of an optical zone about an optical axis and a non-optical peripheral carrier zone about the optical zone; wherein the optical zone is configured with a substantially single vision power profile providing correction for the eye, and a decentred second region configured with an astigmatic, or toric, or asymmetric power distribution, the second region located substantially away from the optical centre and configured to provide at least in part a regional conoid or interval of Sturm producing an optical stop signal for the eye; and wherein the non-optical peripheral carrier zone is configured with a thickness profile that is substantially rotationally symmetric to further provide a temporally and spatially varying stop signals to reduce myopia progression.
    Type: Grant
    Filed: September 23, 2020
    Date of Patent: July 1, 2025
    Assignees: Nthalmic Holding Pty Ltd, Brighten Optix Corp.
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Fabian Conrad
  • Publication number: 20250199335
    Abstract: The present disclosure is directed to lenses, devices, methods and/or systems for addressing refractive error. Certain embodiments are directed to changing or controlling the wavefront of the light entering a human eye. The lenses, devices, methods and/or systems can be used for correcting, addressing, mitigating or treating refractive errors and provide excellent vision at distances encompassing far to near without significant ghosting. The refractive error may for example arise from myopia, hyperopia, or presbyopia with or without astigmatism. Certain disclosed embodiments of lenses, devices and/or methods include embodiments that address foveal and/or peripheral vision. Exemplary of lenses in the fields of certain embodiments include contact lenses, corneal onlays, corneal inlays, and lenses for intraocular devices both anterior and posterior chamber, accommodating intraocular lenses, electro-active spectacle lenses and/or refractive surgery.
    Type: Application
    Filed: December 20, 2024
    Publication date: June 19, 2025
    Inventors: Ravi Bakaraju, Klaus Ehrmann, Arthur Ho, Brien Anthony Holden
  • Publication number: 20250189822
    Abstract: The current disclosure relates to methods of designing a front surface toric soft contact lens with a substantially circular optic zone. More specifically, this disclosure describes a method to design a front surface toric soft contact lens which features a substantially circular optic zone with smooth transitions between the optic zone and the peripheral non-optical stabilisation carrier zone. The optic zone diameter is designed independent of the cylinder power and the shape, or curvature, of the back surface. This disclosure describes a method to design a front surface toric soft contact lens such that neither the edge profile nor the optic zone diameter is affected by the magnitude of cylinder power or the orientation of the cylinder axis.
    Type: Application
    Filed: March 6, 2023
    Publication date: June 12, 2025
    Applicants: Nthalmic Holding Pty Ltd, VIZIONFOCUS INC.
    Inventor: Klaus Ehrmann
  • Patent number: 12321046
    Abstract: The present disclosure is directed to devices and/or systems of modifying the incoming light through spectacle lenses that utilise at least one auxiliary or regional optical element, to provide extension or elongation of the depth of focus for a myopic eye. The disclosure relates to methods of correcting myopia and controlling or reducing the rate of myopia progression utilising extension of the depth of focus provided by the at least one auxiliary or regional optical element configured within, or in conjunction, combination, or juxtaposition with spectacle lenses. This disclosure relates to the use of an axicon, a light sword element, or a peacock eye element within the regional optical element or a sub-lens. This disclosure also relates to the use of a plurality of axicons, light sword elements or peacock eye elements configured within, or in conjunction, combination, or juxtaposition with spectacle lenses.
    Type: Grant
    Filed: February 8, 2021
    Date of Patent: June 3, 2025
    Assignees: NTHALMIC HOLDING PTY LTD, BRIGHTEN OPTIX CORP, LTD., SHANGHAI ISPARX MEDICAL CO., LTD
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann
  • Patent number: 12298605
    Abstract: The present disclosure is directed to lenses, devices, methods and/or systems for addressing refractive error. Certain embodiments are directed to changing or controlling the wavefront of the light entering a human eye. The lenses, devices, methods and/or systems can be used for correcting, addressing, mitigating or treating refractive errors and provide excellent vision at distances encompassing far to near without significant ghosting. The refractive error may for example arise from myopia, hyperopia, or presbyopia with or without astigmatism. Certain disclosed embodiments of lenses, devices and/or methods include embodiments that address foveal and/or peripheral vision. Exemplary of lenses in the fields of certain embodiments include contact lenses, corneal onlays, corneal inlays, and lenses for intraocular devices both anterior and posterior chamber, accommodating intraocular lenses, electro-active spectacle lenses and/or refractive surgery.
    Type: Grant
    Filed: September 26, 2023
    Date of Patent: May 13, 2025
    Assignee: Brien Holden Vision Institute Limited
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Arthur Ho, Brien Anthony Holden
  • Patent number: 12298604
    Abstract: The present disclosure is directed to lenses, devices, methods and/or systems for addressing refractive error. Certain embodiments are directed to changing or controlling the wavefront of the light entering a human eye. The lenses, devices, methods and/or systems can be used for correcting, addressing, mitigating or treating refractive errors and provide excellent vision at distances encompassing far to near without significant ghosting. The refractive error may for example arise from myopia, hyperopia, or presbyopia with or without astigmatism. Certain disclosed embodiments of lenses, devices and/or methods include embodiments that address foveal and/or peripheral vision. Exemplary of lenses in the fields of certain embodiments include contact lenses, corneal onlays, corneal inlays, and lenses for intraocular devices both anterior and posterior chamber, accommodating intraocular lenses, electro-active spectacle lenses and/or refractive surgery.
    Type: Grant
    Filed: April 7, 2022
    Date of Patent: May 13, 2025
    Assignee: Brien Holden Vision Institute Limited
    Inventors: Ravi Bakaraju, Klaus Ehrmann, Arthur Ho, Brien Anthony Holden
  • Publication number: 20250110355
    Abstract: The present disclosure is directed generally to a lens that provides a stop signal to a myopic eye, over a substantial portion of the spectacle lens that the viewer is using. The present disclosure is directed to devices, methods and/or systems of imposing a stop signal to eye growth, using a spectacle lens in conjunction with a micro lenslet array. The present disclosure is also directed to devices, methods and/or systems of modifying incoming light through spectacle lenses that utilizes chromatic cues to decelerate the rate of myopia progression. The present disclosure is directed to devices, methods and/or systems of imposing a stop signal to eye growth, using a spectacle lens in conjunction with a refractive optical element and/or diffractive optical element that offer conflicting or contradictory optical signals at a wavelength between 510 nm and 610 nm.
    Type: Application
    Filed: July 9, 2024
    Publication date: April 3, 2025
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Cathleen Fedtke, Padmaja Sankaridurg, Arthur Ho
  • Patent number: 12061383
    Abstract: The present disclosure is directed generally to a lens that provides a stop signal to a myopic eye, over a substantial portion of the spectacle lens that the viewer is using. The present disclosure is directed to devices, methods and/or systems of imposing a stop signal to eye growth, using a spectacle lens in conjunction with a micro lenslet array. The present disclosure is also directed to devices, methods and/or systems of modifying incoming light through spectacle lenses that utilizes chromatic cues to decelerate the rate of myopia progression. The present disclosure is directed to devices, methods and/or systems of imposing a stop signal to eye growth, using a spectacle lens in conjunction with a refractive optical element and/or diffractive optical element that offer conflicting or contradictory optical signals at a wavelength between 510 nm and 610 nm.
    Type: Grant
    Filed: March 18, 2022
    Date of Patent: August 13, 2024
    Assignee: Brien Holden Vision Institute Limited
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Cathleen Fedtke, Padmaja Sankaridurg, Arthur Ho
  • Publication number: 20240201518
    Abstract: The present disclosure is directed generally to a lens that provides a stop signal to a myopic eye, over a substantial portion of the spectacle lens that the viewer is using. The present disclosure is directed to devices, methods and/or systems of imposing a stop signal to eye growth, using a spectacle lens in conjunction with a micro lenslet array. The present disclosure is also directed to devices, methods and/or systems of modifying incoming light through spectacle lenses that utilizes chromatic cues to decelerate the rate of myopia progression. The present disclosure is directed to devices, methods and/or systems of imposing a stop signal to eye growth, using a spectacle lens in conjunction with a refractive optical element and/or diffractive optical element that offer conflicting or contradictory optical signals at a wavelength between 510 nm and 610 nm.
    Type: Application
    Filed: December 5, 2023
    Publication date: June 20, 2024
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Cathleen Fedtke, Padmaja Sankaridurg, Arthur Ho
  • Publication number: 20240184139
    Abstract: The present disclosure is directed to lens, methods of making, designing lens and/or methods using lens in which performance may be improved by providing one or more steps in the central portion of the optical zone and one or more steps in the peripheral portion of the optic zone. In some embodiments, such lens may be useful for correcting refractive error of an eye and/or for controlling eye growth.
    Type: Application
    Filed: November 21, 2023
    Publication date: June 6, 2024
    Inventors: Brien Anthony Holden, Padmaja Rajagopal Sankaridurg, Klaus Ehrmann, Fabian Conrad, Arthur Ho
  • Publication number: 20240160044
    Abstract: The present disclosure is directed to lenses, devices, methods and/or systems for addressing refractive error. Certain embodiments are directed to changing or controlling the wavefront of the light entering a human eye. The lenses, devices, methods and/or systems can be used for correcting, addressing, mitigating or treating refractive errors and provide excellent vision at distances encompassing far to near without significant ghosting. The refractive error may for example arise from myopia, hyperopia, or presbyopia with or without astigmatism. Certain disclosed embodiments of lenses, devices and/or methods include embodiments that address foveal and/or peripheral vision. Exemplary of lenses in the fields of certain embodiments include contact lenses, corneal onlays, corneal inlays, and lenses for intraocular devices both anterior and posterior chamber, accommodating intraocular lenses, electro-active spectacle lenses and/or refractive surgery.
    Type: Application
    Filed: September 26, 2023
    Publication date: May 16, 2024
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Arthur Ho, Brien Anthony Holden