Patents by Inventor Alexander Koshelev

Alexander Koshelev 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: 10942378
    Abstract: A pupil-replicating waveguide suitable for operation with a coherent light source is disclosed. A waveguide body has opposed surfaces for guiding a beam of image light. An out-coupling element is disposed in an optical path of the beam for out-coupling portions of the beam at a plurality of spaced apart locations along the optical path. Electrodes are coupled to at least a portion of the waveguide body for modulating an optical path length of the optical path of the beam to create time-varying phase delays between the portions of the beam out-coupled by the out-coupling element.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: March 9, 2021
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Andrew Maimone, Andrew Ouderkirk, Hee Yoon Lee, Ningfeng Huang, Maxwell Parsons, Scott Charles McEldowney, Babak Amirsolaimani, Pasi Saarikko, Wanli Chi, Giuseppe Calafiore, Alexander Koshelev, Barry David Silverstein, Lu Lu, Wai Sze Tiffany Lam, Gang Li, Stephan Lutgen, Francois Olivier, David Massoubre
  • Publication number: 20200292851
    Abstract: A pupil-replicating waveguide suitable for operation with a coherent light source is disclosed. A waveguide body has opposed surfaces for guiding a beam of image light. An out-coupling element is disposed in an optical path of the beam for out-coupling portions of the beam at a plurality of spaced apart locations along the optical path. Electrodes are coupled to at least a portion of the waveguide body for modulating an optical path length of the optical path of the beam to create time-varying phase delays between the portions of the beam out-coupled by the out-coupling element.
    Type: Application
    Filed: June 2, 2020
    Publication date: September 17, 2020
    Inventors: Andrew Maimone, Andrew Ouderkirk, Hee Yoon Lee, Ningfeng Huang, Maxwell Parsons, Scott Charles McEldowney, Babak Amirsolaimani, Pasi Saarikko, Wanli Chi, Giuseppe Calafiore, Alexander Koshelev, Barry David Silverstein, Lu Lu, Wai Sze Tiffany Lam, Gang Li, Stephan Lutgen, Francois Olivier, David Massoubre
  • Patent number: 10705353
    Abstract: A pupil-replicating waveguide suitable for operation with a coherent light source is disclosed. A waveguide body has opposed surfaces for guiding a beam of image light. An out-coupling element is disposed in an optical path of the beam for out-coupling portions of the beam at a plurality of spaced apart locations along the optical path. Electrodes are coupled to at least a portion of the waveguide body for modulating an optical path length of the optical path of the beam to create time-varying phase delays between the portions of the beam out-coupled by the out-coupling element.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: July 7, 2020
    Assignee: Facebook Technologies, LLC
    Inventors: Andrew Maimone, Andrew Ouderkirk, Hee Yoon Lee, Ningfeng Huang, Maxwell Parsons, Scott Charles McEldowney, Babak Amirsolaimani, Pasi Saarikko, Wanli Chi, Giuseppe Calafiore, Alexander Koshelev, Barry David Silverstein, Lu Lu, Wai Sze Tiffany Lam, Gang Li, Stephan Lutgen, Francois Olivier, David Massoubre
  • Publication number: 20200192130
    Abstract: A pupil-replicating waveguide suitable for operation with a coherent light source is disclosed. A waveguide body has opposed surfaces for guiding a beam of image light. An out-coupling element is disposed in an optical path of the beam for out-coupling portions of the beam at a plurality of spaced apart locations along the optical path. Electrodes are coupled to at least a portion of the waveguide body for modulating an optical path length of the optical path of the beam to create time-varying phase delays between the portions of the beam out-coupled by the out-coupling element.
    Type: Application
    Filed: December 18, 2018
    Publication date: June 18, 2020
    Inventors: Andrew Maimone, Andrew Ouderkirk, Hee Yoon Lee, Ningfeng Huang, Maxwell Parsons, Scott Charles McEldowney, Babak Amirsolaimani, Pasi Saarikko, Wanli Chi, Giuseppe Calafiore, Alexander Koshelev, Barry David Silverstein, Lu Lu, Wai Sze Tiffany Lam, Gang Li, Stephan Lutgen, Francois Olivier, David Massoubre
  • Patent number: 10578876
    Abstract: A waveguide is provided including first and second diffraction gratings and a phase-matching region conterminous with the first and second diffraction gratings and disposed in an optical path between the gratings. For an optical beam propagating along the optical path, the first grating adds a first phase shift to the optical beam reflecting from the first grating, the second grating adds a second phase shift to the optical beam reflecting from the second grating, and the phase-matching region adds a matching phase shift to the optical beam reflecting from the phase-matching region. The matching phase shift is between minimum and maximum values of the first and second phase shifts.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: March 3, 2020
    Assignee: Facebook Technologies, LLC
    Inventors: Wai Sze Tiffany Lam, Ningfeng Huang, Alexander Koshelev, Hee Yoon Lee, Austin Lane, Giuseppe Calafiore
  • Patent number: 9880330
    Abstract: In one embodiment, an optical element includes a first semi-transparent semi-reflective layer and a second semi-transparent semi-reflective layer. The optical element includes a first transparent material having a first refractive index and disposed between the first semi-transparent semi-reflective layer and the second semi-transparent semi-reflective layer. The optical element includes a second transparent material having a second refractive index, disposed between the first semi-transparent semi-reflective layer and the second semi-transparent semi-reflective layer, and surrounding the first transparent material in a plane parallel to the first semi-transparent semi-reflective layer and the second semi-transparent semi-reflective layer. The first refractive index is higher than the second refractive index.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: January 30, 2018
    Assignee: ABeam Technologies, Inc.
    Inventors: Alexander Koshelev, Keiko Munechika