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: 20200142201Abstract: 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: ApplicationFiled: January 7, 2020Publication date: May 7, 2020Inventors: Douglas Robert Lanman, William Aaron Nicholls, Marina Zannoli, Kevin James MacKenzie, James Hillis, Yusufu Njoni Bamaxam Sulai, Olivier Mercier
-
Patent number: 10634907Abstract: An eye-tracker for determining a position of the pupil of an eye includes a detector and an optical element. The optical element has a first side facing the detector and an opposing second side. The optical element is configured to receive light reflected off the eye on the first side and redirect a portion of the reflected light that has a first wavelength in a spectral range and a first circular polarization toward the detector. The optical element is also configured to light that is outside the spectral range and light that has a second circular polarization opposite to the first circular 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: GrantFiled: December 19, 2018Date of Patent: April 28, 2020Assignee: Facebook Technologies, LLCInventors: Ying Geng, Babak Amirsolaimani, Scott Charles McEldowney, Wanli Chi, Yusufu Njoni Bamaxam Sulai
-
Patent number: 10606349Abstract: 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: GrantFiled: June 22, 2018Date of Patent: March 31, 2020Assignee: Facebook Technologies, LLCInventors: Andrew John Ouderkirk, Jacques Gollier, Robin Sharma, Yusufu Njoni Bamaxam Sulai, Brian Wheelwright, Ying Geng, Alexander Sohn, Abbas Mehdi Kazmi
-
Patent number: 10609364Abstract: A lens for a head mounted display is configured for directing and collimating image light from pixels of an electronic display to a pupil of a user's eye to lessen a pupil swim effect. A method of configuring a lens for directing and collimating image light from an electronic display to a pupil of a user's eye includes configuring the lens to lessen a difference between observed distortions of imagery displayed by the electronic display at different gaze angles of the user's eye.Type: GrantFiled: July 3, 2018Date of Patent: March 31, 2020Assignee: Facebook Technologies, LLCInventors: Ying Geng, Yusufu Njoni Bamaxam Sulai, Jacques Gollier, Brant Carlton Lewis, Brian Wheelwright
-
Patent number: 10598928Abstract: A head-mounted device (HMD) contains a display, an optics block, a redirection structure, and an eye tracking system. The display is configured to emit image light and provide it to an eye of a user. The optics block is configured to direct the emitted light in order to allow it to reach the eye. The eye tracking system contains a camera, an illumination source, and a controller. The camera is configured to capture image data using infrared light reflected from the eye. The controller is configured to use this image data to determine eye tracking information. The illumination source is configured to illuminate the eye with infrared light for the purpose of taking eye tracking measurements. The redirection structure is configured to direct infrared light reflected from the eye to the eye tracking system. In multiple embodiments, redirection structures may comprise prism arrays, lenses, liquid crystal layers, or grating structures.Type: GrantFiled: December 21, 2017Date of Patent: March 24, 2020Assignee: Facebook Technologies, LLCInventors: Wai Sze Tiffany Lam, Yusufu Njoni Bamaxam Sulai, Robin Sharma, Ying Geng, Lu Lu, Jacques Gollier
-
Patent number: 10600352Abstract: A display device is configured to be operable in a normal mode that blocks ambient light or a see-through mode that allows ambient light to be visible to a user. The display device includes an emission surface configured to output image light, a switchable window configurable to block ambient light in the normal mode or to transmit ambient light in the see-through mode, and an optical assembly. The 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. The optical assembly also includes a second region configured to receive ambient light from the switchable window and to allow at least a portion of the ambient light to pass through. A method of setting the display device in normal mode or see-through mode is also disclosed.Type: GrantFiled: December 4, 2018Date of Patent: March 24, 2020Assignee: Facebook Technologies, LLCInventors: Brian Wheelwright, Jacques Gollier, Ying Geng, Yusufu Njoni Bamaxam Sulai, Fenglin Peng, Babak Amirsolaimani
-
Patent number: 10591989Abstract: A near-eye-display (NED) includes an eye tracking system and a waveguide display. The eye tracking system tracks locations based on a location of the user's eyes. The waveguide display includes a light source, an output waveguide and a controller. The output waveguide includes a dynamic output grating that outputs an expanded image light to the tracked eyebox locations. The decoupling grating is a 2D array of spatially switchable liquid crystal (LC) pixels including an active subset of LC pixels emitting light only to regions within the tracked eyebox locations. The decoupling grating dynamically out-couples the expanded image light to the tracked location based on switching instructions generated and provided by the controller.Type: GrantFiled: December 7, 2018Date of Patent: March 17, 2020Assignee: Facebook Technologies, LLCInventors: Yusufu Njoni Bamaxam Sulai, Wai Sze Tiffany Lam, Lu Lu
-
Patent number: 10567731Abstract: Systems and methods for displaying an image across a plurality of displays are described herein. Pixel intensity values in the multifocal display are determined using correlation values and numerical iterations. An eye tracking system measures eye tracking information about a position of a user's eye, and the pixel intensity values are modified based on the eye tracking information. An image is displayed on the plurality of displays based on the determined pixel intensity values. The plurality of displays may be within an HMD, and address vergence accommodation conflict by simulating retinal defocus blur.Type: GrantFiled: July 26, 2019Date of Patent: February 18, 2020Assignee: Facebook Technologies, LLCInventors: Olivier Mercier, Yusufu Njoni Bamaxam Sulai, Kevin James MacKenzie, Marina Zannoli, James Hillis, Derek Nowrouzezahrai, Douglas Robert Lanman
-
Publication number: 20200049872Abstract: 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: ApplicationFiled: October 18, 2019Publication date: February 13, 2020Inventors: Fenglin Peng, Ying Geng, Yusufu Njoni Bamaxam Sulai, Mengfei Wang, Lu Lu, Jacques Gollier
-
Patent number: 10520742Abstract: A head-mounted display includes an electronic display configured to output image light, an optics assembly configured to direct image light in a first band from the electronic display to an eye box, an eye tracking unit configured to generate eye tracking information, and a beamsplitter configured to redirect light in a second band reflected from the eye box toward the eye tracking unit and transmit the image light in the first band. The beamsplitter includes a first region and a second region, and a first portion that joins the first region and the second region is curved such that an angle between the first region and the optical axis is larger than an angle between second region and the optical axis, and the beamsplitter is positioned along the optical axis between the optics assembly and the electronic display.Type: GrantFiled: August 23, 2017Date of Patent: December 31, 2019Assignee: Facebook Technologies, LLCInventors: Yusufu Njoni Bamaxam Sulai, Brian Wheelwright, Jacques Gollier, Alexander Sohn
-
Publication number: 20190384070Abstract: A lens assembly includes a first optical element and a second optical element. The first optical element includes a flat partially reflective layer. The second optical element includes a curved reflective polarizer layer.Type: ApplicationFiled: June 7, 2019Publication date: December 19, 2019Inventors: Ying Geng, Yusufu Njoni Bamaxam Sulai, Jacques Gollier, Brian Wheelwright
-
Patent number: 10509228Abstract: A head-mounted display (HMD) presented herein comprises an electronic display and an optical assembly. The electronic display is configured to emit image light. The optical assembly is configured to direct the image light to an eye-box of the HMD corresponding to a location of a user's eye. The electronic display is positioned with respect to an optical axis of the HMD such that a first portion of the image light emitted by a first portion of the electronic display and a second portion of the image light emitted by a second portion of the electronic display appear to originate at different distances from the optical assembly such that the optical assembly generates at least a first image plane associated with the first portion of the electronic display and a second image plane associated with the second portion of the electronic display.Type: GrantFiled: December 20, 2017Date of Patent: December 17, 2019Assignee: Facebook Technologies, LLCInventors: Yusufu Njoni Bamaxam Sulai, Brian Wheelwright
-
Patent number: 10504207Abstract: A head-mounted display (HMD) divides an image into a high resolution (HR) inset portion at a first resolution, a peripheral portion, and a transitional portion. The peripheral portion is downsampled to a second resolution that is less than the first resolution. The transitional portion is blended such that there is a smooth change in resolution that corresponds to a change in resolution between a fovea region and a non-fovea region of a retina. An inset region is generated using the HR inset portion and the blended transitional portion, and a background region is generated using the downsampled peripheral portion. The inset region is provided to a HR inset display, and the background region is provided to a peripheral display. An optics block combines the displayed inset region with the displayed background region to generate composite content.Type: GrantFiled: June 6, 2019Date of Patent: December 10, 2019Assignee: Facebook Technologies, LLCInventors: Austin Wilson, Douglas Robert Lanman, Nicholas Daniel Trail, Scott Charles McEldowney, Stephen James McNally, Yusufu Njoni Bamaxam Sulai
-
Patent number: 10495798Abstract: 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: GrantFiled: August 7, 2018Date of Patent: December 3, 2019Assignee: Facebook Technologies, LLCInventors: Fenglin Peng, Ying Geng, Yusufu Njoni Bamaxam Sulai, Mengfei Wang, Lu Lu, Jacques Gollier
-
Patent number: 10495887Abstract: A head-mounted display (HMD) includes a multifocal block having one or more possible focal distances and includes a multifocal structure. The multifocal structure has a first focal distance and a second focal distance of the one or more possible focal distances. The multifocal structure includes one or more optical components positioned in series such that light from an electronic display is received and passes through each of the one or more optical components at least once before being output from the multifocal structure. The one or more optical components includes a switchable half waveplate (SHWP). The SHWP has a first state that causes the multifocal structure to output image light at the first focal distance, and a second state that causes the multifocal structure to output the image light at the first focal distance.Type: GrantFiled: July 16, 2019Date of Patent: December 3, 2019Assignee: Facebook Technologies, LLCInventors: Yusufu Njoni Bamaxam Sulai, Nicholas Daniel Trail, Wai Sze Tiffany Lam
-
Publication number: 20190353898Abstract: An optical system includes an optical waveguide, and a first optical element configured to direct a first ray, having a first circular polarization and impinging on the first optical element at a first incidence angle, in a first direction so that the first ray propagates through the optical waveguide via total internal reflection toward a second optical element. The first optical element is configured to also direct a second ray, having a second circular polarization that is distinct from the first circular polarization and impinging on the first optical element at the first incidence angle, in a second direction that is distinct from the first direction so that the second ray propagates away from the second optical element. The second optical element is configured to direct the first ray propagating through the optical waveguide toward a detector.Type: ApplicationFiled: March 20, 2019Publication date: November 21, 2019Inventors: Babak Amirsolaimani, Pasi Saarikko, Ying Geng, Yusufu Njoni Bamaxam Sulai, Scott Charles McEldowney
-
Publication number: 20190353906Abstract: An optical assembly includes a partial reflector that is optically coupled with a first polarization volume holographic element. The partial reflector is capable of receiving first light having a first circular polarization and transmitting a portion of the first light having a first circular polarization. The first polarization volume holographic element is configured to receive the first portion of the first light and reflect the first portion of the first light as second light having the first circular polarization. The partial reflector is capable of receiving the second light and reflecting a first portion of the second light as third light having a second circular polarization opposite to the first polarization. The first polarization volume holographic element is configured to receive the third light having the second circular polarization and transmit the third light having the second circular polarization.Type: ApplicationFiled: December 14, 2018Publication date: November 21, 2019Inventors: Jacques Gollier, Brian Wheelwright, Scott Charles McEldowney, Yusufu Njoni Bamaxam Sulai, Babak Amirsolaimani, Ying Geng
-
Patent number: 10466497Abstract: A head-mounted display includes an electronic display configured to output image light, an optics assembly configured to direct image light in a first band from the electronic display to an eye box, an eye tracking unit configured to generate eye tracking information, and a beamsplitter configured to redirect light in a second band reflected from the eye box toward the eye tracking unit and transmit the image light in the first band. The beamsplitter includes a first region and a second region, and a first portion that joins the first region and the second region is curved such that an angle between the first region and the optical axis is larger than an angle between second region and the optical axis, and the beamsplitter is positioned along the optical axis between the optics assembly and the electronic display.Type: GrantFiled: August 23, 2017Date of Patent: November 5, 2019Assignee: Facebook Technologies, LLCInventors: Yusufu Njoni Bamaxam Sulai, Brian Wheelwright, Jacques Gollier, Alexander Sohn
-
Publication number: 20190313087Abstract: A lens for a head mounted display is configured for directing and collimating image light from pixels of an electronic display to a pupil of a user's eye to lessen a pupil swim effect. A method of configuring a lens for directing and collimating image light from an electronic display to a pupil of a user's eye includes configuring the lens to lessen a difference between observed distortions of imagery displayed by the electronic display at different gaze angles of the user's eye.Type: ApplicationFiled: July 3, 2018Publication date: October 10, 2019Inventors: Ying Geng, Yusufu Njoni Bamaxam Sulai, Jacques Gollier, Brant Carleton Lewis, Brian Wheelwright
-
Patent number: 10432908Abstract: Systems and methods for displaying an image across a plurality of displays are described herein. Pixel intensity values in the multifocal display are determined using correlation values and numerical iterations. An eye tracking system measures eye tracking information about a position of a user's eye, and the pixel intensity values are modified based on the eye tracking information. An image is displayed on the plurality of displays based on the determined pixel intensity values. The plurality of displays may be within an HMD, and address vergence accommodation conflict by simulating retinal defocus blur.Type: GrantFiled: June 12, 2019Date of Patent: October 1, 2019Assignee: Facebook Technologies, LLCInventors: Olivier Mercier, Yusufu Njoni Bamaxam Sulai, Kevin James MacKenzie, Marina Zannoli, James Hillis, Derek Nowrouzezahrai, Douglas Robert Lanman