Patents by Inventor Yusufu Njoni Bamaxam Sulai

Yusufu Njoni Bamaxam Sulai 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).

  • Publication number: 20210286124
    Abstract: An optical device is provided. The optical device includes a first optical element configured to output an elliptically polarized light having one or more predetermined polarization ellipse parameters. The optical device also includes a second optical element including a birefringent material with a chirality, and configured to receive the elliptically polarized light from the first optical element and reflect the elliptically polarized light as a circularly polarized light.
    Type: Application
    Filed: March 16, 2020
    Publication date: September 16, 2021
    Inventors: Fenglin PENG, Junren WANG, Yuge HUANG, Lu LU, Yusufu Njoni Bamaxam SULAI, Ying GENG, Jacques GOLLIER, Barry David SILVERSTEIN, Yu-Jen WANG, Yun-Han LEE
  • Patent number: 11112606
    Abstract: A head-mounted display (HMD) including multiple layered display panels. The HMD may include a first display panel to display a first image, and a second display panel positioned in front of the first display panel to at least partially overlap with the first display panel. The second display panel may include a display substrate, and a plurality of light emitting diodes (LEDs) positioned on the display substrate. The plurality of LEDs display a second image. The display substrate and the plurality of LEDs are transparent for the first image to be visible through the second display panel.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: September 7, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Christopher Percival, Yusufu Njoni Bamaxam Sulai
  • Publication number: 20210263317
    Abstract: An augmented reality/mixed reality/virtual reality (AR/MR/VR) display configured to output artificial reality content comprising an angularly selective diffusive combiner and a projector configured to project a virtual image on the angularly selective diffusive combiner is disclosed. The angularly selective diffusive combiner comprises first and second opposing surfaces with a first material disposed in between. The angularly selective diffusive combiner also comprises a second material disposed between the first and second opposing surfaces, the second material having an optical index of refraction substantially matching the optical index of refraction of the first material for light normally incident to the first and second surfaces at a first angle and an optical index of refraction different from the optical index of refraction of the first material for light incident to the first and second surfaces at an angle.
    Type: Application
    Filed: February 25, 2020
    Publication date: August 26, 2021
    Inventors: Oleg Yaroshchuk, Alireza Moheghi, Yusufu Njoni Bamaxam Sulai
  • Publication number: 20210247615
    Abstract: An optical assembly includes a reflector and a volume Bragg grating (VBG). The VBG is positioned for: (i) transmitting light having a first polarization and incident upon the VBG at an incident angle that is within a first angular range, (ii) reflecting light having the first polarization and incident upon the VBG at an incident angle that is within a second angular range distinct from the first angular range, and (iii) transmitting light having a second polarization different from the first polarization. The optical assembly is configured to receive first light, having the first polarization, and reflect the first light at the reflector and at the VBG before the first light is output from the optical assembly. The optical assembly is configured to receive second light, having the second polarization, and output the second light from the optical assembly without undergoing reflection at either the reflector or the VBG.
    Type: Application
    Filed: April 27, 2021
    Publication date: August 12, 2021
    Inventors: Ying GENG, Brian WHEELWRIGHT, Jacques GOLLIER, Yusufu Njoni Bamaxam SULAI, Babak AMIRSOLAIMANI, Weichuan GAO
  • Patent number: 11086126
    Abstract: A system includes an eyewear device, and a neckband device. The neckband device includes a power source and a processor communicatively coupled to the eyewear device. The system includes a bracelet device, which includes at least one sensor configured to determine a position signal in response to movement of the user's hand, the bracelet device communicatively coupled to the processor. A display device is configured to present content to a user, and is also configured to couple to and be removable from the eyewear device.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: August 10, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Jacques Gollier, Ying Geng, Yusufu Njoni Bamaxam Sulai, Brian Wheelwright
  • Patent number: 11079599
    Abstract: A display device includes a frame, a display, an optical assembly, and a display-moving assembly connected to the display and the frame. The display-moving assembly is configured to move the display between multiple different positions, including a first position and a second position. When the display is in the first position, the display is configured to output image light in a first direction. The first direction is substantially parallel to an optical axis of the optical assembly. When the display is in the second position, the display is positioned away from the optical axis of the optical assembly.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: August 3, 2021
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Brian Wheelwright, Jacques Gollier, Ying Geng, Yusufu Njoni Bamaxam Sulai, Weichuan Gao, Kieran Connor Kelly, Stephen Choi
  • Patent number: 11073700
    Abstract: A display device includes a display having optically anisotropic molecules disposed between a front surface and a back surface. The display is configurable to either receive image light and diffuse the image light to output diffused image light from the front surface, or to transmit ambient light from the back surface to the front surface. The display device also includes an optical assembly that has a substrate, a reflector, and a beam splitter. The optical assembly is configurable to transmit a portion of the diffused image light at a first optical power via an optical path including reflections at the reflector and at the beam splitter and to transmit a portion of the ambient light output from the front surface of the display at a second optical power without reflection at the reflector. The second optical power is less than the first optical power.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: July 27, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Yusufu Njoni Bamaxam Sulai, Brian Wheelwright, Weichuan Gao, Alireza Moheghi, Ying Geng, Oleg Yaroshchuk
  • Patent number: 11054622
    Abstract: A folded-lens system is used in an artificial-reality headset. The folded-lens system has a first mirror, a second mirror, and a quarter-wave plate between the first mirror and the second mirror. The first mirror and the second mirror are not strongly curved, which enables the quarter-wave plate to be on a flat surface.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: July 6, 2021
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Jacques Gollier, Ying Geng, Yusufu Njoni Bamaxam Sulai
  • Patent number: 11055929
    Abstract: A display provides display light to an eyebox area. A reflective layer receives the display light from the display and redirects the display light to the eyebox area. The reflective layer receives scene light from an external environment of the device and redirects the scene light to a camera for capturing scene images. The camera is positioned a first distance from the reflective layer that is approximately the same as a second distance between the reflective layer and the eyebox area.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: July 6, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Brian Wheelwright, Jacques Gollier, Yusufu Njoni Bamaxam Sulai, Fenglin Peng, Babak Amirsolaimani
  • Publication number: 20210173134
    Abstract: A device includes a light source configured to generate an image light. The device also includes a lens assembly coupled with the light source. The lens assembly includes a mirror configured to transmit a first portion of the image light and reflect a second portion of the image light. The lens assembly also includes a reflective polarizer including a birefringent medium with a chirality and configured to substantially reflect the first portion of the image light output from the mirror as a polarized light having a predetermined handedness toward the mirror. The lens assembly further includes a lens disposed between the mirror and the reflective polarizer and configured to provide an optical power to the image light.
    Type: Application
    Filed: November 9, 2020
    Publication date: June 10, 2021
    Inventors: Fenglin PENG, Junren WANG, Yuge HUANG, Lu LU, Yusufu Njoni Bamaxam SULAI, Ying GENG, Jacques GOLLIER, Barry David SILVERSTEIN
  • Patent number: 11022784
    Abstract: Folding optics are used in conjunction with a lens system to reduce a back focal length of a head-mounted display. The lens system provides optical power to focus light from an optical display. The folding optics reflects light to fold upon itself to reduce a distance between the lens system and the optical display.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: June 1, 2021
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Brian Wheelwright, Ying Geng, Fenglin Peng, Yusufu Njoni Bamaxam Sulai, Jacques Gollier
  • Patent number: 11016304
    Abstract: An optical assembly includes a substrate that has a first surface and a second surface that is opposite to and substantially parallel with the first surface, a reflector, and a volume Bragg grating (VBG). The VBG is configured to transmit light incident upon the VBG at an incident angle that is within a first predetermined angular range and to reflect light that is incident upon the VBG at an incident angle that is within a second predetermined angular range distinct from the first angular range. The optical assembly is configured to transmit first light received at the first surface in an optical path that includes reflection at the reflector and at the VBG. The optical assembly is also configured to transmit second light received at the first surface such that the second light is output from the second surface without undergoing reflection at either the reflector or the VBG.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: May 25, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Ying Geng, Brian Wheelwright, Jacques Gollier, Yusufu Njoni Bamaxam Sulai, Babak Amirsolaimani, Weichuan Gao
  • Patent number: 11002898
    Abstract: Disclosed herein are techniques for displaying images on multiple image planes in a near-eye display system. A switchable optical device includes a first polarizer configurable to polarize incident light into light of a first circular polarization state, and a second polarizer configurable to transmit light of a second circular polarization state and reflect light of the first circular polarization state into light of the first circular polarization state. The switchable optical device also includes a partial reflector positioned between the first polarizer and the second polarizer. The partial reflector is configured to transmit light from the first polarizer and reflect light from the second polarizer, where the reflected light and the light from the second polarizer have different polarization states. At least one of the first polarizer or the second polarizer includes a cholesteric liquid crystal (CLC) circular polarizer that is switchable by a voltage signal.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: May 11, 2021
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Fenglin Peng, Ying Geng, Yusufu Njoni Bamaxam Sulai, Mengfei Wang, Lu Lu, Jacques Gollier
  • Patent number: 10996752
    Abstract: A backlight device includes a first surface and a second surface that is opposite to the first surface. The backlight device is configured to emit light in a first optical band through the second surface toward a display panel of a head-mounted display (HMD). The display panel is configured to convert the light from the backlight device to image light. The backlight device is transparent to light in a second optical band that is different than the first optical band. An eye tracking system illuminates an eyebox with light in the second optical band. A camera assembly positioned adjacent to the first surface of the backlight device. The camera assembly is configured to capture images of the eye in the second optical band through the backlight device, the display panel. The eye tracking system determines eye tracking information based at least in part on the captured images.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: May 4, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Andrew John Ouderkirk, Jacques Gollier, Robin Sharma, Yusufu Njoni Bamaxam Sulai, Brian Wheelwright, Ying Geng, Alexander Sohn, Abbas Mehdi Kazmi
  • Patent number: 10989926
    Abstract: A near-eye display based on a polarization-selective diffusive combiner includes a polarizer for polarizing impinging ambient light to have a first polarization state, and a polarization-selective scatterer downstream of the polarizer, for passing through the ambient light having the first polarization state substantially without scattering, while scattering impinging display light having a second polarization state orthogonal to the first polarization state. The display light at the second polarization state may be provided by a projector, the polarization-selective scatterer playing the role of a projector screen. A polarization-selective ocular lens may be disposed downstream of the polarization-selective scatterer for viewing images generated by the projector while propagating through orthogonally polarized light from outside environment.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: April 27, 2021
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Nathan Matsuda, Yusufu Njoni Bamaxam Sulai, Ying Geng, Brian Wheelwright, Douglas Robert Lanman, Afsoon Jamali, Jasmine Soria Sears, Alireza Moheghi
  • Patent number: 10989928
    Abstract: An optical assembly includes a substrate having a first surface and a second surface that is opposite to and substantially parallel with the first surface. The substrate also includes a reflector and a beam splitter, each of which is coupled to the substrate. The optical assembly is configured to transmit image light received at the first surface in an optical path that includes reflection at each of the reflector and the beam splitter before the image light is output from the second surface. The optical assembly is also configured to transmit ambient light received at the first surface such that the second light is output from the second surface without undergoing reflection at either the reflector or the beam splitter. A method of transmitting light through the optical assembly is also disclosed.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: April 27, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Ying Geng, Brian Wheelwright, Jacques Gollier, Yusufu Njoni Bamaxam Sulai, Fenglin Peng, Babak Amirsolaimani
  • Patent number: 10983354
    Abstract: A multiplanar head mounted display (HMD) includes two or more artificial display planes for each eye located at optical distances that can be dynamically adjusted based on a location within a scene presented by the HMD that the user views. For example, a scene is presented on two or more electronic display elements (e.g., screens) of the HMD. A focal length of an optics block that directs image light from the electronic display elements towards the eyes of a user is adjusted using a varifocal system (e.g., an element that mechanically changes a distance between a lens system in the optics block and the electronic display element, an element that changes shape of one or more lenses in the lens system in the optics block, etc.) based on a location or object within the scene where the user is looking.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: April 20, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Douglas Robert Lanman, William Aaron Nicholls, Marina Zannoli, Kevin James MacKenzie, James Hillis, Yusufu Njoni Bamaxam Sulai, Olivier Mercier
  • Patent number: 10983341
    Abstract: An eye-tracker for determining a position of the pupil of an eye includes a detector and an optical element. The optical element is configured to receive first light reflected off the eye and reflectively diffract a portion of the first light that has a first polarization toward the detector. The optical element is also configured to transmit second light. The second light includes a second portion of the first light that has a second polarization that is different from the first polarization. A head-mounted display device that includes a display system and the eye-tracker is also disclosed. A method for determining the location of a pupil of an eye is also disclosed herein.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: April 20, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Ying Geng, Babak Amirsolaimani, Scott Charles McEldowney, Wanli Chi, Yusufu Njoni Bamaxam Sulai
  • Patent number: 10962795
    Abstract: A display device includes a first display, a second display and one or more optical elements. The first display is configured to provide a first light that corresponds to a first image, the second display is configured to provide a second light that corresponds to a second image, and the one or more optical elements are configured to project a display image using the first light and the second light. The display image includes the first image and the second image. The display device is configured to project the first image with a first magnification and project the second image with a second magnification that is distinct from the first magnification. Also disclosed is a method performed by the display device.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: March 30, 2021
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Jacques Gollier, Ying Geng, Yusufu Njoni Bamaxam Sulai, Fenglin Peng, Brian Wheelwright
  • Patent number: 10955675
    Abstract: A display device is configurable to be operable in a first mode and a second mode. The display device includes an emission surface configured to output image light, a first optical assembly, and a second optical assembly. The first optical assembly is configured to receive image light from the emission surface and to direct the image light toward the eyes of a user at a first optical power. The second optical assembly includes a first region configured to receive image light from the emission surface and to direct the image light toward the eyes of a user at a second optical power. The second optical assembly also includes a second region configured to receive ambient light and to transmit at least a portion of the received ambient light at a third optical power distinct from and less than the first optical power and the second optical power.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: March 23, 2021
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Brian Wheelwright, Jacques Gollier, Ying Geng, Yusufu Njoni Bamaxam Sulai, Fenglin Peng, Babak Amirsolaimani