Patents by Inventor David A. Fattal

David A. Fattal 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: 20200290622
    Abstract: Vehicle monitoring employs three-dimensional (3D) information in a region adjacent to a vehicle to visually highlight objects that are closer to the vehicle than a threshold distance. A vehicle monitoring system includes a 3D scanner to scan the region adjacent to the vehicle and provide a 3D model including a spatial configuration of objects located within the scanned region. The vehicle monitoring system further includes a 3D electronic display to display a portion of the scanned region using the 3D model and to visually highlight an object within the displayed portion that is located less than the threshold distance from the vehicle.
    Type: Application
    Filed: May 29, 2020
    Publication date: September 17, 2020
    Inventor: David A. Fattal
  • Patent number: 10768357
    Abstract: A polarization-mixing light guide includes a plate light guide and a polarization retarder within the plate light guide. The light guide is to guide a beam of light at a non-zero propagation angle. The light beam includes a first polarization component and a second polarization component. The polarization retarder is to redistribute the first and second polarization components of the guided light beam into predetermined combinations of the polarization components. The light guide is to preferentially scatter out a portion of the guided light beam having the first polarization component. A three-dimensional (3-D) electronic display includes an array of multibeam diffraction gratings at a surface of the plate light guide to preferentially couple out the first polarization component of the guided light beam as a plurality of light beams having different principal angular directions.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: September 8, 2020
    Assignee: LEIA INC.
    Inventor: David A. Fattal
  • Publication number: 20200271851
    Abstract: A bar collimator and backlight system provide collimated light to illuminate a backlight. The bar collimator includes a light guide configured to guide light as guided light and a light extraction feature on a side of the light guide configured to scatter a portion of the guided light out of the light guide as extracted light. The bar collimator further includes a collimation film between the light guide and the backlight, the collimation film being configured to collimate the extracted light. The collimated light has an extent corresponding to a length of an input of the backlight and is configured to serve as an illumination source of the backlight. The backlight system includes the bar collimator and the backlight. The backlight may be multiview backlight.
    Type: Application
    Filed: May 11, 2020
    Publication date: August 27, 2020
    Inventors: Ming Ma, Xuejian Li, David A. Fattal
  • Publication number: 20200241295
    Abstract: A backlit transparent display and a transparent display system provide a displayed image while enabling a background scene to be visible through the display. The backlit transparent display includes a light guide, a plurality of scattering elements, and an array of light valves configured to modulate emitted light scattered from the light guide to provide modulated emitted light representing a displayed image. Transparency of the backlit transparent display is configured to enable the background scene to be visible through the backlit transparent display. The transparent display system includes the array of light valves and a transparent backlight. The transparent display system is configured to provide the displayed image as superimposed on the background scene visible through the transparent display system.
    Type: Application
    Filed: April 10, 2020
    Publication date: July 30, 2020
    Inventor: David A. Fattal
  • Publication number: 20200241342
    Abstract: A polarized backlight employs a light source configured to provide polarized light and a light guide to guide the polarized light. A polarization-preserving scattering feature optically coupled to the light guide is configured to scatter a portion of the guided polarized light out of the light guide as emitted polarized light. A polarization of the emitted polarized light is determined by a polarization of the guided polarized light.
    Type: Application
    Filed: April 14, 2020
    Publication date: July 30, 2020
    Inventors: David A. Fattal, Ming Ma, Xuejian Li
  • Patent number: 10728533
    Abstract: A near-eye display and a binocular near-eye display system provide a plurality of different views of an image to different locations within an eye box to impart focus depth cues to a user. The near-eye display includes a multibeam diffraction grating-based display configured to provide the different views and an optical system configured to relay the different views to the different locations within the eye box. The binocular near-eye display system includes a pair of the multibeam diffraction grating-based displays and a binocular optical system configured to provide and relay a stereoscopic image pair representing a three-dimensional (3D) scene to a corresponding pair of laterally displaced eye boxes.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: July 28, 2020
    Assignee: LEIA INC.
    Inventor: David A. Fattal
  • Patent number: 10725226
    Abstract: Dual-direction collimation and a dual-direction optical collimator provide dual-direction collimated light at a non-zero propagation angle. The dual-direction collimator includes a vertical collimator configured to collimate light in a vertical direction and a horizontal collimator configured to collimate the vertically collimated light in a horizontal direction. The horizontal collimator is located at an output of the vertical collimator. A three-dimensional (3D) display includes the dual-direction collimator, a plate light guide and an array of multibeam diffraction gratings at a surface of the plate light guide to couple out the dual-direction collimated light guided in the plate light guide as a plurality of light beams corresponding to different 3D view of the 3D electronic display.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: July 28, 2020
    Assignee: LEIA INC.
    Inventors: David A. Fattal, Ming Ma, Xuejian Li
  • Publication number: 20200228782
    Abstract: A multiview camera array and multiview system employ camera sub-arrays having at least one camera in common to capture a multiview image of a scene for display on a multiview display. The multiview camera array includes a first sub-array of cameras and a second sub-array of cameras. Cameras of the first and second camera sub-arrays are spaced apart from one another by a first baseline distance and a second baseline distance, respectively. The multiview system further includes a multiview display configured to display the multiview image. A method of capturing a multiview image includes capturing a first plurality of different views of the scene with the first sub-array of cameras and capturing a second plurality of different views of the scene using the second sub-array of cameras.
    Type: Application
    Filed: March 25, 2020
    Publication date: July 16, 2020
    Inventor: David A. Fattal
  • Patent number: 10712501
    Abstract: Grating-based backlighting includes a light guide and a plurality of reflective grating islands spaced apart from one another and optically coupled to the light guide. The light guide is to guide a light beam at a non-zero propagation angle and a reflective grating island includes a reflection mode diffraction grating that is configured to diffractively couple out a portion of the guided light beam as a coupled-out light beam at a predetermined principal angular direction.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: July 14, 2020
    Assignee: LEIA INC.
    Inventor: David A. Fattal
  • Publication number: 20200218011
    Abstract: A grating-coupled light guide concentrates light and diffractively redirects the concentrated light at a non-zero propagation angle as guided light having a predetermined spread angle. The grating-coupled light guide includes a light guide, an optical concentrator, and a grating coupler. The optical concentrator is configured to concentrate light from a light source as concentrated light and the grating coupler is configured to diffractively redirect the concentrated light into the light guide as the guided light. Characteristics of the optical concentrator and grating coupler are configured in combination to determine the non-zero propagation angle and predetermined spread angle. A grating-coupled display system further includes an array of light valves configured to modulate emitted light as a displayed image.
    Type: Application
    Filed: March 18, 2020
    Publication date: July 9, 2020
    Inventors: Xuejian Li, David A. Fattal, Francesco Aieta
  • Publication number: 20200217996
    Abstract: A multicolor static multiview display and method of multicolor static multiview display operation provide a color static multiview image using diffractive gratings to diffractively scatter light from guided light beams having a selectable color and different radial directions. The multicolor static multiview display includes a light guide configured to guide plurality of guided light beams and a multicolor light source configured to provide the guided light beam plurality having the selectable color and the different radial directions. The multicolor static multiview display further includes a plurality of diffraction gratings configured to provide from a portion of the guided light beams directional light beams having a color, intensities, and principal angular directions corresponding to color view pixels of the color static multiview image.
    Type: Application
    Filed: March 16, 2020
    Publication date: July 9, 2020
    Inventor: David A. Fattal
  • Patent number: 10703375
    Abstract: Vehicle monitoring employs three-dimensional (3D) information in a region adjacent to a vehicle to visually highlight objects that are closer to the vehicle than a threshold distance. A vehicle monitoring system includes a 3D scanner to scan the region adjacent to the vehicle and provide a 3D model including a spatial configuration of objects located within the scanned region. The vehicle monitoring system further includes an electronic display to display a portion of the scanned region using the 3D model and to visually highlight an object within the displayed portion that is located less than the threshold distance from the vehicle.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: July 7, 2020
    Assignee: LEIA INC.
    Inventor: David A. Fattal
  • Patent number: 10705281
    Abstract: A mode-selectable backlight and display employ a plurality of directional scattering features to provide emitted light. The mode-selectable backlight includes a light guide, a first directional scattering feature to provide first emitted light from guided light having a first propagation direction within the light guide in a first operational mode, and a second directional scattering feature to provide second light from guided light having a second propagation direction within the light guide in a second operational mode. The second emitted light comprises a plurality of directional light beams having different principal angular directions from one another and the first propagation direction differing from the second propagation direction. The mode-selectable display further includes a plurality of light sources to provide the guided light and an array of light valves configured to modulate the emitted light as a displayed image.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: July 7, 2020
    Assignee: LEIA INC.
    Inventors: David A. Fattal, Ming Ma, Xuejian Li
  • Patent number: 10698217
    Abstract: A diffractive backlight system includes a light source and a plate light guide. A surface of the plate light guide is configured with a diffraction grating that couples light out of the plate light guide and concentrates the light into a localized region of space. The diffractive backlight system may be used with at least one light valve array to form a display that generates images for viewing in the localized region of space. The display may be incorporated in head-mounted displays in order to generate focused augmented or virtual reality images for wearers.
    Type: Grant
    Filed: February 25, 2018
    Date of Patent: June 30, 2020
    Assignee: LEIA INC.
    Inventor: David A. Fattal
  • Patent number: 10684404
    Abstract: Diffraction grating-based backlighting having controlled diffractive coupling efficiency includes a light guide and a plurality of diffraction gratings at a surface of the light guide. The light guide is to guide light and the diffraction gratings are to couple out a portion of the guided light using diffractive coupling and to direct the coupled-out portion away from the light guide surface as a plurality of light beams at a principal angular direction. Diffraction gratings of the plurality include diffractive features having a diffractive feature modulation configured to selectively control a diffractive coupling efficiency of the diffraction gratings as a function of distance along the light guide surface.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: June 16, 2020
    Assignee: LEIA INC.
    Inventor: David A. Fattal
  • Patent number: 10678094
    Abstract: A polarized backlight employs a light source configured to provide polarized light and a light guide to guide the polarized light. A polarization-preserving scattering feature optically coupled to the light guide is configured to scatter a portion of the guided polarized light out of the light guide as emitted polarized light. A polarization of the emitted polarized light is determined by a polarization of the guided polarized light.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: June 9, 2020
    Assignee: LEIA INC.
    Inventors: David A. Fattal, Ming Ma, Xuejian Li
  • Patent number: 10680714
    Abstract: Techniques related to optical devices including a high contrast grating (HCG) lens are described herein. In an example, an optical device includes a transparent substrate. A laser emitter or detector at a first side of the transparent substrate to emit or detect a laser light transmitted via the transparent substrate. A HCG lens is at a second side of the transparent substrate to transmit and refract the laser light.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: June 9, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Wayne Victor Sorin, Michael Renne Ty Tan, David A. Fattal, Sagi Varghese Mathai
  • Patent number: 10670920
    Abstract: Unidirectional grating-based backlighting includes a light guide and a diffraction grating at a surface of the light guide. The light guide is to guide a light beam and the diffraction grating is configured to couple out a portion of the guided light beam using diffractive coupling and to direct the coupled-out portion away from the light guide as a primary light beam at a principal angular direction. The diffraction grating is to further produce a secondary light beam directed into the light guide at an opposite one of the principal angular direction. The unidirectional grating-based backlighting further includes an angularly selective reflective layer within the light guide adjacent to the light guide surface that is configured to reflectively redirect the diffractively produced, secondary light beam out of the light guide in the direction of the primary light beam.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: June 2, 2020
    Assignee: LEIA INC.
    Inventor: David A. Fattal
  • Publication number: 20200150489
    Abstract: A multiview backlight and a multiview display employ a microlens to adjust directional light beams to have directions corresponding to respective different view directions of the multiview display. The multiview backlight includes a light guide configured to guide light as guided light, a multibeam element configured to scatter from the light guide a portion of the guided light as a plurality of directional light beams, and the microlens configured to adjust directions of the directional light beams. The multiview display further includes a multiview pixel configured to modulate the plurality of directional light beams and provide a plurality of different views of the multiview display, the microlens being between the multibeam element and the multiview pixel.
    Type: Application
    Filed: January 14, 2020
    Publication date: May 14, 2020
    Inventors: Ming Ma, David A. Fattal, Francesco Aieta
  • Patent number: 10649128
    Abstract: A multiview backlight and a multiview display employ multibeam elements configured to provide a plurality of light beams having different principal angular directions corresponding to different view directions of the multiview display. The display includes multiview pixels that include sub-pixels. A size of the multibeam element is comparable to a size of a sub-pixel in a multiview pixel of the multiview display.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: May 12, 2020
    Assignee: LEIA INC.
    Inventors: David A. Fattal, Ming Ma, Xuejian Li