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).

  • Patent number: 11874532
    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 14, 2021
    Date of Patent: January 16, 2024
    Assignee: Brien Holden Vision Institute Limited
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Cathleen Fedtke, Padmaja Sankaridurg, Arthur Ho
  • Patent number: 11874529
    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: February 24, 2021
    Date of Patent: January 16, 2024
    Assignee: Brien Holden Vision Institute Limited
    Inventors: Brien Anthony Holden, Padmaja Rajagopal Sankaridurg, Klaus Ehrmann, Fabian Conrad, Arthur Ho
  • Patent number: 11809024
    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: February 9, 2021
    Date of Patent: November 7, 2023
    Assignee: Brien Holden Vision Institute Limited
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Arthur Ho, Brien Anthony Holden
  • Publication number: 20230350232
    Abstract: Certain embodiments are directed to lenses, devices and/or methods. For example, a lens for an eye having an optical axis and an aberration profile along its optical axis, the aberration profile having a focal distance and including higher order aberrations having at least one of a primary spherical aberration component C(4,0) and a secondary spherical aberration component C(6,0). The aberration profile may provide, for a model eye with no aberrations and an on-axis length equal to the focal distance: (i) a peak, first retinal image quality (RIQ) within a through focus range that remains at or above a second RIQ over the through focus range that includes said focal distance, where the first RIQ is at least 0.35, the second RIQ is at least 0.1 and the through focus range is at least 1.8 Diopters; (ii) a RIQ of 0.3 with a through focus slope that improves in a direction of eye growth; and (iii) a RIQ of 0.3 with a through focus slope that degrades in a direction of eye growth.
    Type: Application
    Filed: March 31, 2023
    Publication date: November 2, 2023
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Arthur Ho
  • Publication number: 20230194895
    Abstract: An ophthalmic lens system for reducing the risk of progression of a myopic eye by selectively maintaining, inducing or creating asymmetry of the peripheral retinal profile for the eye. A method for reducing the risk of progression of myopia comprising determining the magnitude of asymmetry of the on-axis/off-axis refractive error profile or eye length profile of the eye and providing an ophthalmic lens system that corrects for and provides acceptable on-axis vision and simultaneously controls the position of the off-axis refractive error profile or eye length profile such that resultant profile of the eye is asymmetric.
    Type: Application
    Filed: November 30, 2022
    Publication date: June 22, 2023
    Inventors: Padmaja Sankaridurg, Thomas John Naduvilath, Klaus Ehrmann, Fabian Conrad
  • Publication number: 20230181362
    Abstract: A plurality of methods and apparatus for managing deficiencies of the meibomian gland lipid production and delivery, including wearable fabrics configured with a matrix of micro- and nano-electromechanical materials, or composite fibres of yarn that are substantially made from carbon nanotubes, graphene, spider silk, natural silk, denim, cotton, metals, or combination thereof. Other methods and apparatus include infrared and ultrasound energy sources within a kit aimed at personalised therapies for improving overall health of the eyelids, while providing for adjunctive relief for associated dry eye symptoms. The management kit may comprise a wearable fabric or spectacle frame configured with infrared emitters and sensors, a handheld imaging device and software containing dosage and administration information coupled with information on improving eyelid hygiene which is reviewed and periodically updated using user-specific information.
    Type: Application
    Filed: May 19, 2021
    Publication date: June 15, 2023
    Applicant: Nthalmic Holding Pty Ltd
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann
  • Publication number: 20230176399
    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: Application
    Filed: February 22, 2021
    Publication date: June 8, 2023
    Applicant: Nthalmic Holding Pty Ltd
    Inventors: Ravi Chandra BAKARAJU, Klaus EHRMANN, Darrin FALK
  • Patent number: 11644688
    Abstract: A lens for an eye having an optical axis and an aberration profile along its optical axis, the aberration profile having a focal distance and including higher order aberrations having at least one of a primary spherical aberration component and a secondary spherical aberration component. The aberration profile may provide, for a model eye with no aberrations and an on-axis length equal to the focal distance: a peak, first retinal image quality (RIQ) within a through focus range that remains at or above a second RIQ over the through focus range that includes said focal distance, where the first RIQ is at least 0.35, the second RIQ is at least 0.1 and the through focus range is at least 1.8 Diopters.
    Type: Grant
    Filed: October 13, 2020
    Date of Patent: May 9, 2023
    Assignee: Brien Holden Vision Institute Limited
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Arthur Ho
  • Publication number: 20230123284
    Abstract: The present disclosure relates to contact lenses for use with eyes experiencing eye-length related disorders, like myopia with or without astigmatism. This invention relates to a contact lens for managing myopia with or without astigmatism; wherein the contact lens is configured with an optical zone defined substantially centred about its optical axis to provide a meridionally and azimuthally variant power distribution resulting, at least in part, in a foveal correction of the myopic eye and, at least in part, resulting in a conoid of partial blur at the retina of the myopic eye, serving as a directional cue or an optical stop signal; and a non-optical peripheral carrier zone about the optical zone configured with a invariant azimuthal thickness distribution, with or without rotation assisting features, to further provide temporally and spatially varying stop signals to decelerate, control, inhibit, or reduce the rate of myopia progression substantially consistent over time.
    Type: Application
    Filed: December 11, 2020
    Publication date: April 20, 2023
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Darrin Falk, Richard I Tsung Wu
  • Publication number: 20230107285
    Abstract: The present disclosure particularly relates to contact lens apparatus and/or methods for myopia management. The present disclosure is directed towards modifying the incoming light through contact lenses that utilise a stop signal to decelerate the rate of myopia progression. More specifically, the present disclosure relates to a contact lens that is purposefully configured with a non-circular non-transparent aperture stop, over an otherwise substantially single vision optic zone, that may facilitate redistribution of light energy into the oblique frequencies of the retinal image serving as an optical stop signal for inhibiting, reducing, or controlling progressive myopic refractive error.
    Type: Application
    Filed: February 18, 2021
    Publication date: April 6, 2023
    Applicant: Nthalmic Holding Pty Ltd
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann
  • Publication number: 20230101527
    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: Application
    Filed: February 8, 2021
    Publication date: March 30, 2023
    Inventors: Ravi Chandra BAKARAJU, Klaus EHRMANN
  • Publication number: 20230102797
    Abstract: The present disclosure relates to a 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 one or more meridionally and azimuthally variant power distributions, wherein at least one of the meridionally and azimuthally variant power distribution is devoid of mirror symmetry, the second region located substantially away from the optical centre and configured to provide at least in part a regional conoid of partial blur 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: February 6, 2021
    Publication date: March 30, 2023
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Darrin Falk
  • Publication number: 20230039493
    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: March 18, 2022
    Publication date: February 9, 2023
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Cathleen Fedtke, Padmaja Sankaridurg, Arthur Ho
  • Publication number: 20230034749
    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 14, 2021
    Publication date: February 2, 2023
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Cathleen Fedtke, Padmaja Sankaridurg, Arthur Ho
  • Patent number: 11567347
    Abstract: An ophthalmic lens system for reducing the risk of progression of a myopic eye by selectively maintaining, inducing or creating asymmetry of the peripheral retinal profile for the eye. A method for reducing the risk of progression of myopia comprising determining the magnitude of asymmetry of the on-axis/off-axis refractive error profile or eye length profile of the eye and providing an ophthalmic lens system that corrects for and provides acceptable on-axis vision and simultaneously controls the position of the off-axis refractive error profile or eye length profile such that resultant profile of the eye is asymmetric.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: January 31, 2023
    Assignee: Brien Holden Vision Institute Limited
    Inventors: Padmaja Sankaridurg, Thomas John Naduvilath, Klaus Ehrmann, Fabian Conrad
  • Publication number: 20230004026
    Abstract: The present disclosure relates to use of single vision ophthalmic lenses for correction of myopia in a wearer, wherein the single vision ophthalmic lens devices are configured with a base prescription to correct the myopia of the individual and are purposefully further configured with non-refractive features, wherein the non-refractive features facilitate an increase in the retinal ganglion cell activity for the wearer, which may serve as an optical stop signal to decelerate, ameliorate, control, inhibit, or reduce, the rate of myopia progression of the wearer.
    Type: Application
    Filed: November 30, 2020
    Publication date: January 5, 2023
    Inventors: Ravi Chandra Bakaraju, Darrin Falk, Klaus Ehrmann
  • Publication number: 20220373824
    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 7, 2022
    Publication date: November 24, 2022
    Inventors: Ravi Bakaraju, Klaus Ehrmann, Arthur Ho, Brien Anthony Holden
  • Publication number: 20220342234
    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: March 28, 2022
    Publication date: October 27, 2022
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Arthur Ho, Brien Anthony Holden
  • Publication number: 20220334409
    Abstract: The present disclosure relates to contact lenses for use with eyes experiencing eye-length related disorders, like myopia. This invention relates to a contact lens for managing myopia of an eye; wherein the contact lens is configured with an optical zone defined substantially centred about its optical axis to provide substantially toric or astigmatic cues for the eye; and a non-optical peripheral carrier zone about the optical zone configured with a thickness profile that is substantially rotationally symmetric to further to provide temporally and spatially varying stop signals to decelerate, ameliorate, control, inhibit, or reduce the rate of myopia progression over time.
    Type: Application
    Filed: September 23, 2020
    Publication date: October 20, 2022
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Fabian Conrad
  • Publication number: 20220326545
    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: September 23, 2020
    Publication date: October 13, 2022
    Inventors: Ravi Chandra Bakaraju, Klaus Ehrmann, Fabian Conrad