Patents by Inventor Yuval Vardy
Yuval Vardy 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).
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Patent number: 11953764Abstract: Optical apparatus (38) includes an electro-optical layer (46), contained within a transparent envelope (43, 44) and having an effective local index of refraction at any given location that is determined by a voltage waveform applied across the electro-optical layer at the location. An array of excitation electrodes (50) is disposed over a surface of the transparent envelope. Control circuitry (42) is configured to apply voltage waveforms to the excitation electrodes so as to generate across at least a part of the active area of the electro-optical layer a phase modulation profile (60, 63, 64, 65, 66, 67, 70) comprising spatially alternating peaks (61) and troughs (62) separated by phase transitions chosen so as to emulate a Fresnel lens. The troughs have respective phase modulation depths that vary by at least one quarter wavelength at a nominal wavelength of 500 nm across at least the part of the active area of the electro-optical layer that emulates the Fresnel lens.Type: GrantFiled: July 22, 2019Date of Patent: April 9, 2024Assignee: OPTICA AMUKA (A.A.) LTD.Inventors: Yariv Haddad, Yuval Vardy, Alex Alon, Yoav Yadin
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Publication number: 20230367141Abstract: Adaptive spectacles include a spectacle frame and first and second electrically-tunable lenses, mounted in the spectacle frame and having respective focal powers and optical centers that are determined by control voltages applied thereto. Control circuitry is configured to apply the control voltages so as to shift the optical centers of the electrically-tunable lenses responsively to the focal powers of the electrically-tunable lenses.Type: ApplicationFiled: July 24, 2023Publication date: November 16, 2023Inventors: Yoav Yadin, Yariv Haddad, Shamir Rosen, Itamar Haim Grutman, Yuval Vardy
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Publication number: 20230341693Abstract: An augmented reality system includes an augmented reality projector that is configured to project an image to an eye of an observer and to allow the observer to view a real scene through the projector. The system further includes first and second electrically-tunable dynamic lenses, which are positioned respectively on opposing first and second sides of the projector, and a controller that is coupled to the projector and the first and second electrically-tunable dynamic lenses. The controller is configured to receive an adjustable accommodation parameter and a specified distance of interest and to set respective first and second refractive powers of the first and second dynamic lenses responsively to the adjustable accommodation parameter and the distance.Type: ApplicationFiled: May 24, 2023Publication date: October 26, 2023Inventors: Yoav Yadin, Yariv Haddad, Yuval Vardy
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Patent number: 11774782Abstract: An optical device includes an electro-optical layer and conductive electrodes disposed over opposing first and second side of the electro-optical layer. Control circuitry is configured to apply at least first control voltage waveforms and second control voltage waveforms between the conductive electrodes so as to generate respective first and second phase modulation profiles in the electro-optical layer, which cause rays of optical radiation that are incident on the device to converge or diverge with respective first and second focal powers, and to change from the first focal power to the second focal power by concurrently applying overshoot control voltages to each of a plurality of the conductive electrodes for different, respective transition periods, followed by application of the second control voltage waveforms.Type: GrantFiled: November 9, 2021Date of Patent: October 3, 2023Assignee: OPTICA AMUKA (A.A.) LTD.Inventors: Yoav Yadin, Yariv Haddad, Shamir Rosen, Itamar Haim Grutman, Yuval Vardy
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Patent number: 11747619Abstract: An augmented reality system (70, 100, 140, 180, 190) includes an augmented reality projector (72, 102, 142, 192) that is configured to project an image to an eye (82, 118, 154, 206) of an observer and to allow the observer to view a real scene (80, 116, 164, 204) through the projector. The system further includes first and second electrically-tunable dynamic lenses (74, 76, 104, 106, 144, 146, 194, 196), which are positioned respectively on opposing first and second sides of the projector, and a controller (78, 110, 150, 198) that is coupled to the projector and the first and second electrically-tunable dynamic lenses. The controller is configured to receive an adjustable accommodation parameter and a specified distance of interest and to set respective first and second refractive powers of the first and second dynamic lenses responsively to the adjustable accommodation parameter and the distance.Type: GrantFiled: July 5, 2018Date of Patent: September 5, 2023Assignee: OPTICA AMUKA (A.A.) LTD.Inventors: Yoav Yadin, Yariv Haddad, Yuval Vardy
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Publication number: 20220066240Abstract: An optical device includes an electro-optical layer and conductive electrodes disposed over opposing first and second side of the electro-optical layer. Control circuitry is configured to apply at least first control voltage waveforms and second control voltage waveforms between the conductive electrodes so as to generate respective first and second phase modulation profiles in the electro-optical layer, which cause rays of optical radiation that are incident on the device to converge or diverge with respective first and second focal powers, and to change from the first focal power to the second focal power by concurrently applying overshoot control voltages to each of a plurality of the conductive electrodes for different, respective transition periods, followed by application of the second control voltage waveforms.Type: ApplicationFiled: November 9, 2021Publication date: March 3, 2022Inventors: Yoav Yadin, Yariv Haddad, Shamir Rosen, Itamar Haim Grutman, Yuval Vardy
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Patent number: 11221500Abstract: An optical device (40) includes an electro-optical layer (46), having an effective local index of refraction at any given location within an active area of the electro-optical layer that is determined by a voltage waveform applied across the electro-optical layer at the location. Conductive electrodes (50, 52) are disposed over opposing first and second side of the electro-optical layer. Control circuitry (26) is configured to apply control voltage waveforms between the conductive electrodes so as to generate a phase modulation profile in the electro-optical layer that causes rays of optical radiation that are incident on the device to converge or diverge with a given focal power, while varying an amplitude of the control voltage waveforms for the given focal power responsively to an angle of incidence of the rays that impinge on the device from a direction of interest.Type: GrantFiled: April 5, 2017Date of Patent: January 11, 2022Assignee: OPTICA AMUKA (A.A.) LTD.Inventors: Yoav Yadin, Yariv Haddad, Shamir Rosen, Itamar Haim Grutman, Yuval Vardy
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Patent number: 11209715Abstract: Optical apparatus includes a Fresnel lens (40), including an array of refractive bands (37) bordered by abrupt phase steps (39) of a height selected so as to focus light in different, first and second wavelength ranges from an object plane (35) toward an image plane (36) with a modulation transfer function (MTF) in excess of a predefined threshold, while focusing light in a third wavelength range, intermediate the first and second wavelength ranges, with MTF less than the predefined threshold. A display (32) is configured to generate, at the object plane of the Fresnel lens, an image including first and second pixel colors within the first and second wavelength ranges, respectively.Type: GrantFiled: January 1, 2019Date of Patent: December 28, 2021Assignee: OPTICA AMUKA (A.A.) LTD.Inventors: Shamir Rosen, Yariv Haddad, Yuval Vardy, Yoav Yadin
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Publication number: 20210311356Abstract: Optical apparatus (38) includes an electro-optical layer (46), contained within a transparent envelope (43, 44) and having an effective local index of refraction at any given location that is determined by a voltage waveform applied across the electro-optical layer at the location. An array of excitation electrodes (50) is disposed over a surface of the transparent envelope. Control circuitry (42) is configured to apply voltage waveforms to the excitation electrodes so as to generate across at least a part of the active area of the electro-optical layer a phase modulation profile (60, 63, 64, 65, 66, 67, 70) comprising spatially alternating peaks (61) and troughs (62) separated by phase transitions chosen so as to emulate a Fresnel lens. The troughs have respective phase modulation depths that vary by at least one quarter wavelength at a nominal wavelength of 500 nm across at least the part of the active area of the electro-optical layer that emulates the Fresnel lens.Type: ApplicationFiled: July 22, 2019Publication date: October 7, 2021Inventors: Yariv Haddad, Yuval Vardy, Alex Alon, Yoav Yadin
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Publication number: 20210173282Abstract: Optical apparatus includes a Fresnel lens (40), including an array of refractive bands (37) bordered by abrupt phase steps (39) of a height selected so as to focus light in different, first and second wavelength ranges from an object plane (35) toward an image plane (36) with a modulation transfer function (MTF) in excess of a predefined threshold, while focusing light in a third wavelength range, intermediate the first and second wavelength ranges, with MTF less than the predefined threshold. A display (32) is configured to generate, at the object plane of the Fresnel lens, an image including first and second pixel colors within the first and second wavelength ranges, respectively.Type: ApplicationFiled: January 1, 2019Publication date: June 10, 2021Inventors: Shamir Rosen, Yariv Haddad, Yuval Vardy, Yoav Yadin
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Publication number: 20210149197Abstract: An augmented reality system (70, 100, 140, 180, 190) includes an augmented reality projector (72, 102, 142, 192) that is configured to project an image to an eye (82, 118, 154, 206) of an observer and to allow the observer to view a real scene (80, 116, 164, 204) through the projector. The system further includes first and second electrically-tunable dynamic lenses (74, 76, 104, 106, 144, 146, 194, 196), which are positioned respectively on opposing first and second sides of the projector, and a controller (78, 110, 150, 198) that is coupled to the projector and the first and second electrically-tunable dynamic lenses. The controller is configured to receive an adjustable accommodation parameter and a specified distance of interest and to set respective first and second refractive powers of the first and second dynamic lenses responsively to the adjustable accommodation parameter and the distance.Type: ApplicationFiled: July 5, 2018Publication date: May 20, 2021Inventors: Yoav Yadin, Yariv Haddad, Yuval Vardy
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Publication number: 20200292848Abstract: An optical device (40) includes an electro-optical layer (46), having an effective local index of refraction at any given location within an active area of the electro-optical layer that is determined by a voltage waveform applied across the electro-optical layer at the location. Conductive electrodes (50, 52) are disposed over opposing first and second side of the electro-optical layer. Control circuitry (26) is configured to apply control voltage waveforms between the conductive electrodes so as to generate a phase modulation profile in the electro-optical layer that causes rays of optical radiation that are incident on the device to converge or diverge with a given focal power, while varying an amplitude of the control voltage waveforms for the given focal power responsively to an angle of incidence of the rays that impinge on the device from a direction of interest.Type: ApplicationFiled: April 5, 2017Publication date: September 17, 2020Inventors: Yoav Yadin, Yariv Haddad, Shamir Rosen, Itamar Haim Grutman, Yuval Vardy