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: 11454495Abstract: 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: January 15, 2020Date of Patent: September 27, 2022Assignee: Magic Leap, Inc.Inventors: Lionel E. Edwin, Ivan L. Yeoh, Samuel A. Miller
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Patent number: 11366322Abstract: 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: December 9, 2020Date of Patent: June 21, 2022Assignee: Magic Leap, Inc.Inventors: Ivan L. Yeoh, Lionel Ernest Edwin, Robert Dale Tekolste
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Patent number: 11314091Abstract: 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: GrantFiled: November 26, 2019Date of Patent: April 26, 2022Assignee: Magic Leap, Inc.Inventors: Ivan L. Yeoh, Lionel E. Edwin, John Graham Macnamara
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Publication number: 20220026718Abstract: 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: August 6, 2021Publication date: January 27, 2022Inventors: Ivan L. Yeoh, Lionel E. Edwin, John Graham Macnamara
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Patent number: 11086125Abstract: 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: January 12, 2018Date of Patent: August 10, 2021Assignee: Magic Leap, Inc.Inventors: Ivan L. Yeoh, Lionel E. Edwin, John Graham Macnamara
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Publication number: 20210116709Abstract: 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: December 9, 2020Publication date: April 22, 2021Applicant: Magic Leap, Inc.Inventors: Ivan L. YEOH, Lionel Ernest EDWIN, Robert Dale TEKOLSTE
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Patent number: 10901223Abstract: 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: April 1, 2020Date of Patent: January 26, 2021Assignee: Magic Leap, Inc.Inventors: Ivan L. Yeoh, Lionel Ernest Edwin, Robert Dale Tekolste
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Publication number: 20200333602Abstract: 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: April 1, 2020Publication date: October 22, 2020Applicant: Magic Leap, Inc.Inventors: Ivan L. YEOH, Lionel Ernest EDWIN, Robert D. TEKOLSTE
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Publication number: 20200225024Abstract: 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: January 15, 2020Publication date: July 16, 2020Inventors: Lionel E. Edwin, Ivan L. Yeoh, Samuel A. Miller
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Publication number: 20200166759Abstract: 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: November 26, 2019Publication date: May 28, 2020Inventors: Ivan L. Yeoh, Lionel E. Edwin, John Graham Macnamara
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Patent number: 10649218Abstract: 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: November 13, 2019Date of Patent: May 12, 2020Assignee: MAGIC LEAP, INC.Inventors: Ivan L. Yeoh, Lionel Ernest Edwin, Robert Dale Tekolste
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Publication number: 20200081258Abstract: 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: November 13, 2019Publication date: March 12, 2020Applicant: Magic Leap, Inc.Inventors: Ivan L. YEOH, Lionel Ernest EDWIN, Robert Dale TEKOLSTE
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Patent number: 10571251Abstract: 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: February 26, 2019Date of Patent: February 25, 2020Assignee: Magic Leap, Inc.Inventors: Lionel E. Edwin, Ivan L. Yeoh, Samuel A. Miller
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Patent number: 10534175Abstract: 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: GrantFiled: May 10, 2017Date of Patent: January 14, 2020Assignee: Magic Leap, Inc.Inventors: Ivan L. Yeoh, Lionel E. Edwin, John Graham Macnamara
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Patent number: 10520737Abstract: 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: June 11, 2019Date of Patent: December 31, 2019Assignee: Magic Leap, Inc.Inventors: Ivan L. Yeoh, Lionel Ernest Edwin, Robert Dale Tekolste
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Publication number: 20190323825Abstract: 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: June 28, 2019Publication date: October 24, 2019Inventors: Ivan L. Yeoh, Lionel E. Edwin, Samuel A. Miller
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Publication number: 20190293941Abstract: 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: June 11, 2019Publication date: September 26, 2019Applicant: Magic Leap, Inc.Inventors: Ivan L. YEOH, Lionel Ernest EDWIN, Robert Dale TEKOLSTE
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Patent number: 10378882Abstract: 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: August 13, 2019Assignee: Magic Leap, Inc.Inventors: Ivan L. Yeoh, Lionel E. Edwin, Samuel A. Miller
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Publication number: 20190226830Abstract: 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: February 26, 2019Publication date: July 25, 2019Inventors: Lionel E. Edwin, Ivan L. Yeoh, Samuel A. Miller
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Patent number: 10359634Abstract: 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: July 9, 2018Date of Patent: July 23, 2019Assignee: Magic Leap, Inc.Inventors: Ivan L. Yeoh, Lionel Ernest Edwin, Robert Dale Tekolste