Patents by Inventor Stephen John Hart

Stephen John Hart 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: 11900842
    Abstract: A device includes a backplane and a plurality of elements arranged on the backplane. The plurality of elements form an irregular pattern. The backplane includes a plurality of circuits. The plurality of elements are coupled to the plurality of circuits by conductive vias that are regularly spaced.
    Type: Grant
    Filed: September 15, 2023
    Date of Patent: February 13, 2024
    Assignee: Pacific Light & Hologram, Inc.
    Inventors: Jonathan Seamus Blackley, Watson Brent Boyett, Sylvain Marcel Colin, Robin James Green, Stephen John Hart, Margaret H. Hsu, DeaGyu Kim, Mark Anthony Loya, Benjamin Francis Neil, Kamran Qaderi, Tina Qin, Jesus Manuel Caridad Ramirez, Jayakrishna Sashidharan, Asher Zelig Sefami, Sameer Sudhir Walavalkar, Joshua D. Wiensch
  • Patent number: 11893966
    Abstract: Systems and methods for improving operating characteristics of displays such as liquid crystal on silicon displays.
    Type: Grant
    Filed: August 19, 2022
    Date of Patent: February 6, 2024
    Assignee: Snap Inc.
    Inventors: Stephen John Hart, Rock Edward Kent, Howard V. Goetz, James L. Sanford, Nicholas W. Melena
  • Patent number: 11762333
    Abstract: Methods, apparatus, devices, and systems for reconstructing three-dimensional objects with display zero order light suppression are provided. In one aspect, a method includes illuminating a display with light, a portion of the light illuminating display elements of the display, and modulating the display elements of the display with a hologram corresponding to holographic data to diffract the portion of the light to form a holographic scene corresponding to the holographic data, and to suppress display zero order light in the holographic scene. The display zero order light can include reflected light from the display.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: September 19, 2023
    Assignee: Pacific Light & Hologram, Inc.
    Inventors: Kamran Qaderi, Stephen John Hart, Robert Alan Hess, Jonathan Seamus Blackley
  • Publication number: 20230186874
    Abstract: Systems and methods for improving operating characteristics of displays such as liquid crystal on silicon displays.
    Type: Application
    Filed: August 19, 2022
    Publication date: June 15, 2023
    Inventors: Stephen John Hart, Rock Edward Kent, Howard V. Goetz, James L. Sanford, Nicholas W. Melena
  • Publication number: 20230142054
    Abstract: Methods, apparatus, devices, and systems for displaying three-dimensional objects by individually diffracting different colors of light are provided. In one aspect, an optical device includes: a first optically diffractive component including a first diffractive structure configured to diffract a first color of light having a first incident angle at a first diffracted angle, a second optically diffractive component including a second diffractive structure configured to diffract a second color of light having a second incident angle at a second diffracted angle, a first reflective layer configured to totally reflect the first color of light having the first incident angle and transmit the second color of light, and a second reflective layer configured to totally reflect the second color of light having the second incident angle. The first reflective layer is between the first and second diffractive structures, and the second diffractive structure is between the first and second reflective layers.
    Type: Application
    Filed: December 12, 2022
    Publication date: May 11, 2023
    Inventors: Kamran Qaderi, Stephen John Hart, Robert Alan Hess, Jonathan Seamus Blackley
  • Patent number: 11455975
    Abstract: Systems and methods for improving operating characteristics of displays such as liquid crystal on silicon displays.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: September 27, 2022
    Assignee: Snap Inc.
    Inventors: Stephen John Hart, Edward Rock Kent, Howard V. Goetz, James L. Sanford, Nicholas W. Melena
  • Patent number: 11415937
    Abstract: Methods, apparatus, devices, and systems for displaying three-dimensional objects by individually diffracting different colors of light are provided. In one aspect, an optically diffractive device includes: first and second diffractive components and a color-selective polarizer therebetween. The first diffractive component is configured to diffract a first color of light in a first polarization state incident at a first incident angle with a first diffraction efficiency at a first diffracted angle, and diffract a second color of light in a second polarization state with a diffraction efficiency substantially less than the first diffraction efficiency. The color-selective polarizer is configured to rotate the second polarization state of the second color of light to the first polarization state.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: August 16, 2022
    Assignee: Pacific Light & Hologram, Inc.
    Inventors: Kamran Qaderi, Stephen John Hart, Robert Alan Hess, Jonathan Seamus Blackley
  • Patent number: 11378917
    Abstract: Methods, apparatus, devices, and systems for displaying three-dimensional objects by individually diffracting different colors of light are provided. In one aspect, a system includes a display having a plurality of display elements and an optical device including at least two beam expanders configured to expand an input light beam in at least two dimensions to generate an output light beam to the display by diffracting the input light beam to adjust a beam size of the input light beam in the at least two dimensions, the input light beam including a plurality of different colors of light.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: July 5, 2022
    Assignee: Pacific Light & Hologram, Inc.
    Inventors: Kamran Qaderi, Stephen John Hart, Robert Alan Hess, Jonathan Seamus Blackley
  • Patent number: 11360429
    Abstract: Methods, apparatus, devices, and systems for reconstructing three-dimensional objects with display zero order light suppression are provided. In one aspect, a method includes illuminating a display with light, a portion of the light illuminating display elements of the display, and modulating the display elements of the display with a hologram corresponding to holographic data to diffract the portion of the light to form a holographic scene corresponding to the holographic data, and to suppress display zero order light in the holographic scene. The display zero order light can include reflected light from the display.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: June 14, 2022
    Assignee: Pacific Light & Hologram, Inc.
    Inventors: Kamran Qaderi, Stephen John Hart, Robert Alan Hess, Jonathan Seamus Blackley
  • Patent number: 11360430
    Abstract: Methods, apparatus, devices, and systems for reconstructing three-dimensional objects with display zero order light suppression are provided. In one aspect, a method includes illuminating a display with light at an incident angle, a portion of the light illuminating display elements of the display, modulating the display elements of the display with a hologram corresponding to holographic data to diffract the portion of the light to form a holographic scene corresponding to the holographic data, and redirecting display zero order light away from the holographic scene to suppress the display zero order light in the holographic scene. The display zero order light includes reflected light from the display.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: June 14, 2022
    Assignee: Pacific Light & Hologram, Inc.
    Inventors: Kamran Qaderi, Stephen John Hart, Robert Alan Hess, Jonathan Seamus Blackley
  • Patent number: 11360431
    Abstract: Methods, apparatus, devices, and systems for reconstructing three-dimensional objects with display zero order light suppression are provided. In one aspect, a method includes illuminating a display with light at an incident angle, a portion of the light illuminating display elements of the display, modulating the display elements of the display with a hologram corresponding to holographic data to diffract the portion of the light to form a holographic scene corresponding to the holographic data, and redirecting display zero order light away from the holographic scene to suppress the display zero order light in the holographic scene. The display zero order light includes reflected light from the display. The light includes a plurality of different colors of light.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: June 14, 2022
    Assignee: Pacific Light & Hologram, Inc.
    Inventors: Kamran Qaderi, Stephen John Hart, Robert Alan Hess, Jonathan Seamus Blackley
  • Patent number: 11347185
    Abstract: Methods, apparatus, devices, and systems for displaying three-dimensional objects by individually diffracting different colors of light are provided. In one aspect, a system includes a display having a plurality of display elements and an optical device configured to diffract a plurality of different colors of light to the display. The optical device is configured such that, when the plurality of different colors of light is incident on the optical device, the optical device separates light of individual colors of the different colors while suppressing crosstalk between the different colors.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: May 31, 2022
    Assignee: Pacific Light & Hologram, Inc.
    Inventors: Kamran Qaderi, Stephen John Hart, Robert Alan Hess, Jonathan Seamus Blackley
  • Publication number: 20220083003
    Abstract: Methods, apparatus, devices, and systems for reconstructing three-dimensional objects with display zero order light suppression are provided. In one aspect, a method includes illuminating a display with light, a portion of the light illuminating display elements of the display, and modulating the display elements of the display with a hologram corresponding to holographic data to diffract the portion of the light to form a holographic scene corresponding to the holographic data, and to suppress display zero order light in the holographic scene. The display zero order light can include reflected light from the display.
    Type: Application
    Filed: September 17, 2021
    Publication date: March 17, 2022
    Inventors: Kamran Qaderi, Stephen John Hart, Robert Alan Hess, Jonathan Seamus Blackley
  • Publication number: 20220083001
    Abstract: Methods, apparatus, devices, and systems for reconstructing three-dimensional objects with display zero order light suppression are provided. In one aspect, a method includes illuminating a display with light at an incident angle, a portion of the light illuminating display elements of the display, modulating the display elements of the display with a hologram corresponding to holographic data to diffract the portion of the light to form a holographic scene corresponding to the holographic data, and redirecting display zero order light away from the holographic scene to suppress the display zero order light in the holographic scene. The display zero order light includes reflected light from the display.
    Type: Application
    Filed: September 17, 2021
    Publication date: March 17, 2022
    Inventors: Kamran Qaderi, Stephen John Hart, Robert Alan Hess, Jonathan Seamus Blackley
  • Publication number: 20220082998
    Abstract: Methods, apparatus, devices, and systems for reconstructing three-dimensional objects with display zero order light suppression are provided. In one aspect, a method includes illuminating a display with light, a portion of the light illuminating display elements of the display, and modulating the display elements of the display with a hologram corresponding to holographic data to diffract the portion of the light to form a holographic scene corresponding to the holographic data, and to suppress display zero order light in the holographic scene. The display zero order light can include reflected light from the display.
    Type: Application
    Filed: September 17, 2021
    Publication date: March 17, 2022
    Inventors: Kamran Qaderi, Stephen John Hart, Robert Alan Hess, Jonathan Seamus Blackley
  • Publication number: 20220083000
    Abstract: Methods, apparatus, devices, and systems for displaying three-dimensional objects by individually diffracting different colors of light are provided. In one aspect, a system includes a display having a plurality of display elements and an optical device including at least two beam expanders configured to expand an input light beam in at least two dimensions to generate an output light beam to the display by diffracting the input light beam to adjust a beam size of the input light beam in the at least two dimensions, the input light beam including a plurality of different colors of light.
    Type: Application
    Filed: September 17, 2021
    Publication date: March 17, 2022
    Inventors: Kamran Qaderi, Stephen John Hart, Robert Alan Hess, Jonathan Seamus Blackley
  • Publication number: 20220086419
    Abstract: Methods, apparatus, devices, and systems for displaying three-dimensional objects by individually diffracting different colors of light are provided. In one aspect, a system includes a display having a plurality of display elements and an optical device configured to diffract a plurality of different colors of light to the display. The optical device is configured such that, when the plurality of different colors of light is incident on the optical device, the optical device separates light of individual colors of the different colors while suppressing crosstalk between the different colors.
    Type: Application
    Filed: September 17, 2021
    Publication date: March 17, 2022
    Inventors: Kamran Qaderi, Stephen John Hart, Robert Alan Hess, Jonathan Seamus Blackley
  • Publication number: 20220083006
    Abstract: Methods, apparatus, devices, and systems for displaying three-dimensional objects by individually diffracting different colors of light are provided. In one aspect, an optical device includes: a first optically diffractive component including a first diffractive structure configured to diffract a first color of light having a first incident angle at a first diffracted angle, a second optically diffractive component including a second diffractive structure configured to diffract a second color of light having a second incident angle at a second diffracted angle, a first reflective layer configured to totally reflect the first color of light having the first incident angle and transmit the second color of light, and a second reflective layer configured to totally reflect the second color of light having the second incident angle. The first reflective layer is between the first and second diffractive structures, and the second diffractive structure is between the first and second reflective layers.
    Type: Application
    Filed: September 17, 2021
    Publication date: March 17, 2022
    Inventors: Kamran Qaderi, Stephen John Hart, Robert Alan Hess, Jonathan Seamus Blackley
  • Publication number: 20220083002
    Abstract: Methods, apparatus, devices, and systems for reconstructing three-dimensional objects with display zero order light suppression are provided. In one aspect, a method includes illuminating a display with light at an incident angle, a portion of the light illuminating display elements of the display, modulating the display elements of the display with a hologram corresponding to holographic data to diffract the portion of the light to form a holographic scene corresponding to the holographic data, and redirecting display zero order light away from the holographic scene to suppress the display zero order light in the holographic scene. The display zero order light includes reflected light from the display. The light includes a plurality of different colors of light.
    Type: Application
    Filed: September 17, 2021
    Publication date: March 17, 2022
    Inventors: Kamran Qaderi, Stephen John Hart, Robert Alan Hess, Jonathan Seamus Blackley
  • Publication number: 20220082886
    Abstract: Methods, apparatus, devices, and systems for displaying three-dimensional objects by individually diffracting different colors of light are provided. In one aspect, an optically diffractive device includes: first and second diffractive components and a color-selective polarizer therebetween. The first diffractive component is configured to diffract a first color of light in a first polarization state incident at a first incident angle with a first diffraction efficiency at a first diffracted angle, and diffract a second color of light in a second polarization state with a diffraction efficiency substantially less than the first diffraction efficiency. The color-selective polarizer is configured to rotate the second polarization state of the second color of light to the first polarization state.
    Type: Application
    Filed: September 17, 2021
    Publication date: March 17, 2022
    Inventors: Kamran Qaderi, Stephen John Hart, Robert Alan Hess, Jonathan Seamus Blackley