Patents by Inventor Ivan L. Yeoh
Ivan L. Yeoh 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: 10349818Abstract: Improved systems, methods, and devices relating to optical fiber scanners are provided. In one aspect, a scanning apparatus includes an optical fiber and a piezoelectric actuator coupled to the optical fiber to deflect a distal end of the optical fiber in a scanning pattern. The apparatus can include drive circuitry coupled to the piezoelectric actuator, sense circuitry electrically coupled to the piezoelectric actuator and the drive circuitry to determine displacement of the piezoelectric actuator, and a processor coupled to the drive circuitry and the sense circuitry to drive the piezoelectric actuator in response to the displacement.Type: GrantFiled: December 7, 2017Date of Patent: July 16, 2019Assignee: University of Washington through its Center for CommercializationInventors: Ivan L. Yeoh, Per G. Reinhall, Eric J. Seibel, Matthew J. Kundrat
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Patent number: 10260864Abstract: Examples of a light field metrology system for use with a display are disclosed. The light field metrology may capture images of a projected light field, and determine focus depths (or lateral focus positions) for various regions of the light field using the captured images. The determined focus depths (or lateral positions) may then be compared with intended focus depths (or lateral positions), to quantify the imperfections of the display. Based on the measured imperfections, an appropriate error correction may be performed on the light field to correct for the measured imperfections. The display can be an optical display element in a head mounted display, for example, an optical display element capable of generating multiple depth planes or a light field display.Type: GrantFiled: November 2, 2016Date of Patent: April 16, 2019Assignee: Magic Leap, Inc.Inventors: Lionel E. Edwin, Ivan L. Yeoh, Samuel A. Miller
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Patent number: 10254536Abstract: A display subsystem for a virtual image generation system. The display subsystem comprises a planar waveguide apparatus, and an optical fiber having a distal tip affixed relative to the planar waveguide apparatus, and an aperture proximal to the distal tip. The display subsystem further comprises at least one light source coupled the optical fiber and configured for emitting light from the aperture of the optical fiber, and a mechanical drive assembly to which the optical fiber is mounted to the drive assembly. The mechanical drive assembly is configured for displacing the aperture of the optical fiber in accordance with a scan pattern. The display subsystem further comprises an optical waveguide input apparatus configured for directing the light from the aperture of the optical fiber down the planar waveguide apparatus, such that the planar waveguide apparatus displays one or more image frames to the end user.Type: GrantFiled: July 19, 2016Date of Patent: April 9, 2019Assignee: MAGIC LEAP, INC.Inventors: Ivan L. Yeoh, Lionel Ernest Edwin, Aaron Mark Schuelke
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Patent number: 10176639Abstract: A virtual image generation system and method is provided. A plurality of synthetic image frames of the three-dimensional scene are rendered, and sequentially displayed to an end user. Each of the displayed image frames has a non-uniform resolution distribution.Type: GrantFiled: July 15, 2016Date of Patent: January 8, 2019Assignee: Magic Leap, Inc.Inventors: Brian T. Schowengerdt, Lionel Ernest Edwin, Ivan L. Yeoh, Aaron Mark Schuelke, Samuel A. Miller
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Publication number: 20180341112Abstract: A virtual image generation system for use by an end user comprises a projection subsystem configured for generating a collimated light beam, and a display configured emitting light rays in response to the collimated light beam to display a pixel of an image frame to the end user. The pixel has a location encoded with angles of the emitted light rays. The virtual image generation system further comprises a sensing assembly configured for sensing at least one parameter indicative of at least one of the emitted light ray angles, and a control subsystem configured for generating image data defining a location of the pixel, and controlling an angle of the light beam relative to the display based on the defined location of the pixel and the sensed parameter(s).Type: ApplicationFiled: July 9, 2018Publication date: November 29, 2018Applicant: Magic Leap, Inc.Inventors: Ivan L. YEOH, Lionel Ernest EDWIN, Robert Dale TEKOLSTE
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Patent number: 10042166Abstract: A virtual image generation system for use by an end user comprises a projection subsystem configured for generating a collimated light beam, and a display configured emitting light rays in response to the collimated light beam to display a pixel of an image frame to the end user. The pixel has a location encoded with angles of the emitted light rays. The virtual image generation system further comprises a sensing assembly configured for sensing at least one parameter indicative of at least one of the emitted light ray angles, and a control subsystem configured for generating image data defining a location of the pixel, and controlling an angle of the light beam relative to the display based on the defined location of the pixel and the sensed parameter(s).Type: GrantFiled: January 12, 2017Date of Patent: August 7, 2018Assignee: MAGIC LEAP, INC.Inventors: Ivan L. Yeoh, Lionel Ernest Edwin, Robert Dale TeKolste
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Publication number: 20180136474Abstract: In a stacked waveguide assembly, the waveguides can comprise color filters, distributed filters, and/or switch materials. Examples of color filters include dyes, tints, or stains. Examples of distributed filters and/or switch materials include dichroic filters, Bragg gratings, electronically switchable glass, and electronically switchable mirrors. Switch materials can be designed or tuned to attenuate light of unwanted colors or wavelengths. The waveguides may each be associated with a particular design wavelength. This can mean that a waveguide that is associated with a design wavelength includes an incoupling optical element is configured to deflect light at the design wavelength to an associated light distributing element and that the associated wavelength selective region is configured to attenuate light not at the design wavelength.Type: ApplicationFiled: January 12, 2018Publication date: May 17, 2018Inventors: Ivan L. Yeoh, Lionel E. Edwin, John Graham Macnamara
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Publication number: 20180103834Abstract: Improved systems, methods, and devices relating to optical fiber scanners are provided. In one aspect, a scanning apparatus includes an optical fiber and a piezoelectric actuator coupled to the optical fiber to deflect a distal end of the optical fiber in a scanning pattern. The apparatus can include drive circuitry coupled to the piezoelectric actuator, sense circuitry electrically coupled to the piezoelectric actuator and the drive circuitry to determine displacement of the piezoelectric actuator, and a processor coupled to the drive circuitry and the sense circuitry to drive the piezoelectric actuator in response to the displacement.Type: ApplicationFiled: December 7, 2017Publication date: April 19, 2018Inventors: Ivan L. Yeoh, Per G. Reinhall, Eric J. Seibel, Matthew J. Kundrat
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Patent number: 9904058Abstract: In a stacked waveguide assembly, the waveguides can comprise color filters, distributed filters, and/or switch materials. Examples of color filters include dyes, tints, or stains. Examples of distributed filters and/or switch materials include dichroic filters, Bragg gratings, electronically switchable glass, and electronically switchable mirrors. Switch materials can be designed or tuned to attenuate light of unwanted colors or wavelengths. The waveguides may each be associated with a particular design wavelength. This can mean that a waveguide that is associated with a design wavelength includes an incoupling optical element is configured to deflect light at the design wavelength to an associated light distributing element and that the associated wavelength selective region is configured to attenuate light not at the design wavelength.Type: GrantFiled: May 10, 2017Date of Patent: February 27, 2018Assignee: Magic Leap, Inc.Inventors: Ivan L. Yeoh, Lionel E. Edwin, John Graham Macnamara
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Patent number: 9872606Abstract: Improved systems, methods, and devices relating to optical fiber scanners are provided. In one aspect, a scanning apparatus includes an optical fiber and a piezoelectric actuator coupled to the optical fiber to deflect a distal end of the optical fiber in a scanning pattern. The apparatus can include drive circuitry coupled to the piezoelectric actuator, sense circuitry electrically coupled to the piezoelectric actuator and the drive circuitry to determine displacement of the piezoelectric actuator, and a processor coupled to the drive circuitry and the sense circuitry to drive the piezoelectric actuator in response to the displacement.Type: GrantFiled: December 24, 2014Date of Patent: January 23, 2018Assignee: UNIVERSITY OF WASHINGTON THROUGH ITS CENTER FOR COMMERCIALIZATIONInventors: Ivan L. Yeoh, Per G. Reinhall, Eric J. Seibel, Matthew J. Kundrat
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Publication number: 20170329140Abstract: In a stacked waveguide assembly, the waveguides can comprise color filters, distributed filters, and/or switch materials. Examples of color filters include dyes, tints, or stains. Examples of distributed filters and/or switch materials include dichroic filters, Bragg gratings, electronically switchable glass, and electronically switchable mirrors. Switch materials can be designed or tuned to attenuate light of unwanted colors or wavelengths. The waveguides may each be associated with a particular design wavelength. This can mean that a waveguide that is associated with a design wavelength includes an incoupling optical element is configured to deflect light at the design wavelength to an associated light distributing element and that the associated wavelength selective region is configured to attenuate light not at the design wavelength.Type: ApplicationFiled: May 10, 2017Publication date: November 16, 2017Inventors: Ivan L. Yeoh, Lionel E. Edwin, John Graham Macnamara
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Publication number: 20170329075Abstract: A stacked waveguide assembly can have multiple waveguide stacks. Each waveguide stack can include a plurality of waveguides, where a first waveguide stack may be associated with a first subcolor of each of three different colors, and a second waveguide stack may be associated with a second subcolor of each of the three different colors. For example, the first stack of waveguides can incouple blue, green, and red light at 440 nm, 520 nm, and 650 nm, respectively. The second stack of waveguides can incouple blue, green, and red light at 450 nm, 530 nm, and 660 nm, respectively.Type: ApplicationFiled: May 10, 2017Publication date: November 16, 2017Inventors: Ivan L. Yeoh, Lionel E. Edwin, John Graham Macnamara
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Publication number: 20170199384Abstract: A virtual image generation system for use by an end user comprises a projection subsystem configured for generating a collimated light beam, and a display configured emitting light rays in response to the collimated light beam to display a pixel of an image frame to the end user. The pixel has a location encoded with angles of the emitted light rays. The virtual image generation system further comprises a sensing assembly configured for sensing at least one parameter indicative of at least one of the emitted light ray angles, and a control subsystem configured for generating image data defining a location of the pixel, and controlling an angle of the light beam relative to the display based on the defined location of the pixel and the sensed parameter(s).Type: ApplicationFiled: January 12, 2017Publication date: July 13, 2017Applicant: Magic Leap, Inc.Inventors: Ivan L. Yeoh, Lionel Ernest Edwin, Robert Dale TeKolste
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Publication number: 20170122725Abstract: Examples of a light field metrology system for use with a display are disclosed. The light field metrology may capture images of a projected light field, and determine focus depths (or lateral focus positions) for various regions of the light field using the captured images. The determined focus depths (or lateral positions) may then be compared with intended focus depths (or lateral positions), to quantify the imperfections of the display. Based on the measured imperfections, an appropriate error correction may be performed on the light field to correct for the measured imperfections. The display can be an optical display element in a head mounted display, for example, an optical display element capable of generating multiple depth planes or a light field display.Type: ApplicationFiled: November 2, 2016Publication date: May 4, 2017Inventors: Ivan L. Yeoh, Lionel E. Edwin, Sam Miller
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Publication number: 20170124928Abstract: Examples of a light field metrology system for use with a display are disclosed. The light field metrology may capture images of a projected light field, and determine focus depths (or lateral focus positions) for various regions of the light field using the captured images. The determined focus depths (or lateral positions) may then be compared with intended focus depths (or lateral positions), to quantify the imperfections of the display. Based on the measured imperfections, an appropriate error correction may be performed on the light field to correct for the measured imperfections. The display can be an optical display element in a head mounted display, for example, an optical display element capable of generating multiple depth planes or a light field display.Type: ApplicationFiled: November 2, 2016Publication date: May 4, 2017Inventors: Lionel E. Edwin, Ivan L. Yeoh, Sam Miller
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Publication number: 20170038579Abstract: A display subsystem for a virtual image generation system. The display subsystem comprises a planar waveguide apparatus, and an optical fiber having a distal tip affixed relative to the planar waveguide apparatus, and an aperture proximal to the distal tip. The display subsystem further comprises at least one light source coupled the optical fiber and configured for emitting light from the aperture of the optical fiber, and a mechanical drive assembly to which the optical fiber is mounted to the drive assembly. The mechanical drive assembly is configured for displacing the aperture of the optical fiber in accordance with a scan pattern. The display subsystem further comprises an optical waveguide input apparatus configured for directing the light from the aperture of the optical fiber down the planar waveguide apparatus, such that the planar waveguide apparatus displays one or more image frames to the end user.Type: ApplicationFiled: July 19, 2016Publication date: February 9, 2017Applicant: MAGIC LEAP, INC.Inventors: Ivan L. Yeoh, Lionel Ernest Edwin, Aaron Mark Schuelke
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Publication number: 20160324403Abstract: Improved systems, methods, and devices relating to optical fiber scanners are provided. In one aspect, a scanning apparatus includes an optical fiber and a piezoelectric actuator coupled to the optical fiber to deflect a distal end of the optical fiber in a scanning pattern. The apparatus can include drive circuitry coupled to the piezoelectric actuator, sense circuitry electrically coupled to the piezoelectric actuator and the drive circuitry to determine displacement of the piezoelectric actuator, and a processor coupled to the drive circuitry and the sense circuitry to drive the piezoelectric actuator in response to the displacement.Type: ApplicationFiled: December 24, 2014Publication date: November 10, 2016Inventors: Ivan L. Yeoh, Per G. Reinhall, Eric J. Seibel, Matthew J. Kundrat
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Publication number: 20160328884Abstract: A virtual image generation system and method is provided. A plurality of synthetic image frames of the three-dimensional scene are rendered, and sequentially displayed to an end user. Each of the displayed image frames has a non-uniform resolution distribution.Type: ApplicationFiled: July 15, 2016Publication date: November 10, 2016Applicant: MAGIC LEAP, INC.Inventors: Brian T. Schowengerdt, Lionel Ernest Edwin, Ivan L. Yeoh, Aaron Mark Schuelke, Samuel A. Miller