Patents by Inventor Erik Shipton

Erik Shipton 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: 11933940
    Abstract: Systems and methods are described herein for manufacturing high-index, low-absorption materials for use in visible light optical metasurfaces. Methods of manufacturing or forming hydrogenated amorphous silicon (a-Si:H), silicon-rich nitride (SRN), and hydrogenated silicon-rich nitride (SRN:H) are described herein that exhibit high indices of refraction and low extinction coefficients for visible wavelengths of optical radiation. Optical metasurfaces, including optical metalenses and waveguide couplers, are described herein that utilize the a-Si:H, SRN, and/or SRN:H materials.
    Type: Grant
    Filed: September 14, 2023
    Date of Patent: March 19, 2024
    Assignee: Imagia, Inc.
    Inventors: Gregory Kress, Heydar Honarvar Nazari, Arindom Datta, Erik Shipton, Abdoulaye Ndao
  • Publication number: 20240085590
    Abstract: Systems and methods are described herein for manufacturing high-index, low-absorption materials for use in visible light optical metasurfaces. Methods of manufacturing or forming hydrogenated amorphous silicon (a-Si:H), silicon-rich nitride (SRN), and hydrogenated silicon-rich nitride (SRN:H) are described herein that exhibit high indices of refraction and low extinction coefficients for visible wavelengths of optical radiation. Optical metasurfaces, including optical metalenses and waveguide couplers, are described herein that utilize the a-Si:H, SRN, and/or SRN:H materials.
    Type: Application
    Filed: September 14, 2023
    Publication date: March 14, 2024
    Inventors: Gregory Kress, Heydar Honarvar Nazari, Arindom Datta, Erik Shipton, Abdoulaye Ndao
  • Patent number: 11874476
    Abstract: According to various embodiments, a device may include a light-emitting diode (LED) to generate optical radiation at an operational wavelength with a divergent emission profile, such as a Lambertian emission profile, relative to a planar face thereof. A metalens may be positioned to modify the divergent emission profile of the optical radiation from the LED to have a modified transmission profile. The metalens may comprise, for example, a substrate and a two-dimensional array of passive pillars that extend from the substrate with a radially symmetric pattern of varying pillar diameters. The pillars may be spaced from one another according to a uniform subwavelength interelement spacing. The diameters of the pillars are selected as a function of the operational wavelength to provide a target phase gradient that modifies the divergent emission profile of the optical radiation from the LED to have the modified transmission profile.
    Type: Grant
    Filed: August 16, 2023
    Date of Patent: January 16, 2024
    Assignee: Imagia, Inc.
    Inventors: Gregory Kress, Abdoulaye Ndao, Erik Shipton
  • Patent number: 11777054
    Abstract: A light-emitting diode includes a first semiconductor region of one of p- or n-conductivity types, a second semiconductor region of the other one of p- or n-conductivity types, forming a p-n junction with the first semiconductor region, and a quantum well layer at the p-n junction between the first and second semiconductor regions. A hyperbolic metamaterial structure is provided in the second semiconductor region. The hyperbolic metamaterial structure is coupled to the quantum well layer for extracting light from the quantum well layer. The hyperbolic metamaterial structure may be patterned to provide an array of nanoantennas to apodize the emitted beam, and to control the polarization state of the emitted beam.
    Type: Grant
    Filed: August 19, 2022
    Date of Patent: October 3, 2023
    Assignee: Meta Platforms Technologies, LLC
    Inventors: Erik Shipton, Tanya Malhotra
  • Patent number: 11681194
    Abstract: Various embodiments set forth liquid crystal (LC) patterning control systems in which LCs are aligned using locally applied magnetic fields. The index of refraction experienced by light propagating through an anisotropic LC is dependent on orientation. As a result, a phase difference may be imparted to an optical beam that is passed through, or reflected from, an array of LCs whose orientations are controlled via locally applied magnetic fields. In some embodiments, the locally applied magnetic fields may be generated by driving currents through wires that intersect at micro or nanomagnetic particles or at magnetic domains, or by applying voltages to micro or nanocoils wrapped around high-permeability cores, among other things.
    Type: Grant
    Filed: February 14, 2022
    Date of Patent: June 20, 2023
    Assignee: META PLATFORMS TECHNOLOGIES, LLC
    Inventors: Erik Shipton, Oleg Yaroshchuk
  • Patent number: 11609424
    Abstract: Techniques disclosed herein relate to a near-eye display system. One example of an eye-tracking system includes a substrate transparent to visible light and infrared light and a reflective holographic grating conformally coupled to a surface of the substrate. The reflective holographic grating is configured to transmit the visible light and reflectively diffract infrared light in a first wavelength range for eye tracking. The refractive index modulation of the reflective holographic grating is apodized in a direction along a thickness of the reflective holographic grating to reduce optical artifacts in the visible light.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: March 21, 2023
    Assignee: Meta Platforms Technologies, LLC
    Inventors: Gregory Olegovic Andreev, Gang Li, Erik Shipton, Yingfei Jiang, Wanli Chi, Andrew John Ouderkirk
  • Patent number: 11594672
    Abstract: Examples include a device including a nanovoided polymer element having a first surface and a second surface, a first plurality of electrodes disposed on the first surface, a second plurality of electrodes disposed on the second surface, and a control circuit configured to apply an electrical potential between one or more of the first plurality of electrodes and one or more of the second plurality of electrodes to induce a physical deformation of the nanovoided polymer element.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: February 28, 2023
    Assignee: META PLATFORMS TECHNOLOGIES, LLC
    Inventors: Tanya Malhotra, Kenneth Diest, Andrew John Ouderkirk, Robin Sharma, Barry Silverstein, Christopher Yuan Ting Liao, Erik Shipton, Greg Olegovic Andreev, Katherine Marie Smyth
  • Patent number: 11569584
    Abstract: Antennas such as flat panel, leaky wave antennas with directional coupler feeds and waveguides are disclosed. In one example, an antenna includes a surface having antenna elements, a guided wave transmission line, and a coupling surface. The guided wave transmission line provides a guided feed wave. The coupling surface is between and separates the guided wave transmission line and the surface having antenna elements. The coupling surface controls coupling of the guided feed wave to the antenna elements. The coupling surface can also spatially filter the guided feed wave to provide a more uniform power density for the antenna elements. The guided feed wave can be a high power density electromagnetic wave or a density radially decaying electromagnetic wave.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: January 31, 2023
    Assignee: KYMETA CORPORATION
    Inventors: Benjamin Sikes, Erik Shipton, David Levesque, Mohsen Sazegar, Ryan Stevenson, Chris M. Eylander
  • Patent number: 11570413
    Abstract: An apparatus may include (1) a planar liquid-crystal structure including a plurality of liquid crystals, and (2) a plurality of electrodes coupled to the planar liquid-crystal structure such that (a) when a first plurality of voltages are applied to at least some of the plurality of electrodes, the plurality of liquid crystals are oriented such that the planar liquid-crystal structure operates as a diffraction grating having a first pitch, and (2) when a second plurality of voltages are applied to at least some of the plurality of electrodes, the plurality of liquid crystals are oriented such that the planar liquid-crystal structure operates as a diffraction grating having a second pitch different from the first pitch.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: January 31, 2023
    Assignee: Meta Platforms Technologies, LLC
    Inventors: Erik Shipton, Alireza Moheghi, Giuseppe Calafiore, Hee Yoon Lee
  • Patent number: 11469347
    Abstract: A light-emitting diode includes a first semiconductor region of one of p- or n-conductivity types, a second semiconductor region of the other one of p- or n-conductivity types, forming a p-n junction with the first semiconductor region, and a quantum well layer at the p-n junction between the first and second semiconductor regions. A hyperbolic metamaterial structure is provided in the second semiconductor region. The hyperbolic metamaterial structure is coupled to the quantum well layer for extracting light from the quantum well layer. The hyperbolic metamaterial structure may be patterned to provide an array of nanoantennas to apodize the emitted beam, and to control the polarization state of the emitted beam.
    Type: Grant
    Filed: December 13, 2020
    Date of Patent: October 11, 2022
    Assignee: Meta Platforms Technologies LLC
    Inventors: Erik Shipton, Tanya Malhotra
  • Publication number: 20220171232
    Abstract: Various embodiments set forth liquid crystal (LC) patterning control systems in which LCs are aligned using locally applied magnetic fields. The index of refraction experienced by light propagating through an anisotropic LC is dependent on orientation. As a result, a phase difference may be imparted to an optical beam that is passed through, or reflected from, an array of LCs whose orientations are controlled via locally applied magnetic fields. In some embodiments, the locally applied magnetic fields may be generated by driving currents through wires that intersect at micro or nanomagnetic particles or at magnetic domains, or by applying voltages to micro or nanocoils wrapped around high-permeability cores, among other things.
    Type: Application
    Filed: February 14, 2022
    Publication date: June 2, 2022
    Inventors: Erik SHIPTON, Oleg YAROSHCHUK
  • Patent number: 11274252
    Abstract: A method and apparatus for improved switching speed and/or tunability for radio-frequency (RF) devices are described. In one embodiment, a liquid crystal (LC) component comprises an LC structure in a mixture with right-handed (R) and left-handed (S) chiral dopants.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: March 15, 2022
    Assignee: Merck Patent GmbH
    Inventors: Erik Shipton, Philip Sullivan, Sebastian Gauza
  • Patent number: 11249242
    Abstract: A manufacturing system for fabricating self-aligned grating elements with a variable refractive index includes a patterning system, a deposition system, and an etching system. The manufacturing system performs a lithographic patterning of one or more photoresists to create a stack over a substrate. The manufacturing system performs a conformal deposition of a protective coating on the stack. The manufacturing system performs a deposition of a first photoresist of a first refractive index on the protective coating. The manufacturing system performs a removal of the first photoresist to achieve a threshold value of first thickness. The manufacturing system performs a deposition of a second photoresist of a second refractive index on the first photoresist. The second refractive index is greater than the first refractive index. The manufacturing system performs a removal of the second photoresist to achieve a threshold value of second thickness to form a portion of an optical grating.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: February 15, 2022
    Assignee: Facebook Technologies, LLC
    Inventors: Matthew E. Colburn, Giuseppe Calafiore, Matthieu Charles Raoul Leibovici, Erik Shipton, Pasi Saarikko
  • Patent number: 11249365
    Abstract: Various embodiments set forth liquid crystal (LC) patterning control systems in which LCs are aligned using locally applied magnetic fields. The index of refraction experienced by light propagating through an anisotropic LC is dependent on orientation. As a result, a phase difference may be imparted to an optical beam that is passed through, or reflected from, an array of LCs whose orientations are controlled via locally applied magnetic fields. In some embodiments, the locally applied magnetic fields may be generated by driving currents through wires that intersect at micro or nanomagnetic particles or at magnetic domains, or by applying voltages to micro or nanocoils wrapped around high-permeability cores, among other things.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: February 15, 2022
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Erik Shipton, Oleg Yaroshchuk
  • Patent number: 11233189
    Abstract: A form birefringent optical element includes a structured layer and a dielectric environment disposed over the structured layer. At least one of the structured layer and the dielectric environment includes a nanovoided polymer, the nanovoided polymer having a first refractive index in an unactuated state and a second refractive index different than the first refractive index in an actuated state. Actuation of the nanovoided polymer can be used to reversibly control the form birefringence of the optical element. Various other apparatuses, systems, materials, and methods are also disclosed.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: January 25, 2022
    Assignee: Facebook Technologies, LLC
    Inventors: Kenneth Diest, Andrew John Ouderkirk, Gregory Olegovic Andreev, Erik Shipton, Tanya Malhotra, Barry David Silverstein, Christopher Yuan Ting Liao
  • Patent number: 11221490
    Abstract: A multilayer grating is a diffraction grating that includes a plurality of layers. The plurality of layers arranged to form a 2-dimensional grating, the layers including at least a first patterned layer and a second patterned layer. The first patterned layer includes a plurality of different materials that are arranged in a first pattern such that the first patterned layer has a first index profile. The second patterned layer includes a plurality of different materials that are arranged in a second pattern such that the second patterned layer has a second index profile that is inverted relative to the first index profile. Ambient light incident on the first patterned layer and the second patterned layer creates a first diffracted ray and a second diffracted ray, respectively, and the first diffracted ray and the second diffracted ray destructively interfere with each other based in part on the inverted index profile.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: January 11, 2022
    Assignee: Facebook Technologies, LLC
    Inventors: Erik Shipton, Giuseppe Calafiore, Pasi Saarikko
  • Patent number: 11137655
    Abstract: A tunable liquid crystal (LC) device includes an LC layer between a pair of reflectors forming an optical cavity. The reflectors include conductive layers for applying an electrical signal to the LC layer. One of the conductive layers may include an array of conductive pixels for spatially selective control of the effective refractive index of the LC layer. The phase delay introduced by the LC layer may be greatly increased or magnified by placing the LC layer into the optical cavity. This enables a substantial reduction of the LC layer thickness, which in its turn enables very tight pitches of the LC pixels, with a reduced inter-pixel crosstalk caused by fringing electric fields, as well as faster switching times. A tight-pitch, fast LC device may be used as a configurable hologram or a spatial light modulator.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: October 5, 2021
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Maxwell Parsons, Shane Colburn, Yingfei Jiang, Andrew Maimone, Erik Shipton, Guohua Wei, Oleg Yaroshchuk
  • Patent number: 11107972
    Abstract: An optical element includes a nanovoided polymer layer having a first refractive index in an unactuated state and a second refractive index different than the first refractive index in an actuated state. Compression or expansion of the nanovoided polymer layer, for instance, can be used to reversibly control the size and shape of the nanovoids within the polymer layer and hence tune its refractive index over a range of values, e.g., during operation of the optical element. Various other apparatuses, systems, materials, and methods are also disclosed.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: August 31, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Kenneth Diest, Andrew John Ouderkirk, Robin Sharma, Tanya Malhotra, Barry David Silverstein, Christopher Yuan Ting Liao, Erik Shipton, Gregory Olegovic Andreev
  • Publication number: 20210255490
    Abstract: A tunable liquid crystal (LC) device includes an LC layer between a pair of reflectors forming an optical cavity. The reflectors include conductive layers for applying an electrical signal to the LC layer. One of the conductive layers may include an array of conductive pixels for spatially selective control of the effective refractive index of the LC layer. The phase delay introduced by the LC layer may be greatly increased or magnified by placing the LC layer into the optical cavity. This enables a substantial reduction of the LC layer thickness, which in its turn enables very tight pitches of the LC pixels, with a reduced inter-pixel crosstalk caused by fringing electric fields, as well as faster switching times. A tight-pitch, fast LC device may be used as a configurable hologram or a spatial light modulator.
    Type: Application
    Filed: April 3, 2020
    Publication date: August 19, 2021
    Inventors: Maxwell Parsons, Shane Colburn, Yingfei Jiang, Andrew Maimone, Erik Shipton, Guohua Wei, Oleg Yaroshchuk
  • Patent number: 11073697
    Abstract: Embodiments of the disclosure are generally directed to systems and methods for switchable electroactive devices for head-mounted displays (HMDs). In particular, a method may include (1) applying an electric field to an electroactive element of an electroactive device via electrodes of the electroactive device that are electrically coupled to the electroactive element to compress the electroactive element, which comprises a polymer material defining nanovoids, such that an average size of the nanovoids is decreased and a density of the nanovoids is increased in the electroactive element, wherein the electroactive device is positioned at a distance from a user's eye, and (2) emitting image light from an emissive device positioned such that at least a portion of the image light is incident on a surface of the electroactive device facing the user's eye.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: July 27, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Robin Sharma, Andrew John Ouderkirk, Tanya Malhotra, Kenneth Diest, Gregory Olegovic Andreev, Erik Shipton, Christopher Yuan Ting Liao, Barry David Silverstein