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).

  • STATIC MULTIVIEW DISPLAY AND METHOD
    Publication number: 20190317265
    Abstract: A static multiview display and method of static multiview display operation provide a static multiview image using diffractive gratings to diffractively scatter light from guided light beams having different radial directions. The static multiview display includes a light guide configured to guide plurality of guided light beams and a light source configured to provide the guided light beam plurality having the different radial directions. The 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 intensities and principal angular directions corresponding to view pixels of the static multiview image.
    Type: Application
    Filed: June 26, 2019
    Publication date: October 17, 2019
    Inventors: David A. Fattal, Xuejian Li, Francesco Aieta
  • Grating apparatus for target phase changes
    Patent number: 10436956
    Abstract: Examples include a method for fabricating a grating mirror using a computing device that comprises calculating a target phase change across the grating mirror. The target phase change may correspond to a target wavefront shape in a beam of light reflected from a grating patter. The method may also comprise generating the grating pattern comprising a plurality of lines with line widths, line period spacings, and line thicknesses corresponding to the target phase change across the grating mirror using the computing device. In such examples, a set of coordinates may be generated using the computing device with each coordinate identifying a location of a line of the plurality of lines, a line width of the line, a line period spacing of the line, and a line thickness of the line.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: October 8, 2019
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: David A Fattal, Jingjing Li, Raymond G Beausoleil, Marco Fiorentino
  • MULTIVIEW BACKLIGHTING EMPLOYING FLUORESCENT MULTIBEAM ELEMENTS
    Publication number: 20190302336
    Abstract: Multiview backlighting employs a fluorescent multibeam element having a color-tailored emission pattern to provide directional light beams corresponding to a plurality of different views of a multiview image. A multiview backlight includes a light guide configured to guide light as guided light and a fluorescent multibeam element. The fluorescent multibeam element includes a fluorescent material and is configured to provide emitted light having a color-tailor emission pattern from the guided light. The emitted light includes a plurality of directional light beams having different principal angular directions corresponding to respective different view directions of a multiview display and the color-tailored emission pattern corresponds to an arrangement of color sub-pixels of a view pixel in the multiview display.
    Type: Application
    Filed: June 20, 2019
    Publication date: October 3, 2019
    Inventors: David A. Fattal, Ming Ma
  • MULTIVIEW DISPLAYS HAVING A REFLECTIVE SUPPORT STRUCTURE
    Publication number: 20190302340
    Abstract: Multiview displays include a reflective support structure located between a backlight and a screen. The backlight includes a plate light guide configured to couple out light that propagates within the plate light guide using multibeam elements. The reflective support structure reflects light incident on a portion of the surface that abuts the reflective support structure back into the plate light guide. The screen includes an array of multiview pixels configured to modulate coupled out light to create a multiview image.
    Type: Application
    Filed: June 20, 2019
    Publication date: October 3, 2019
    Inventors: Ming Ma, David A. Fattal
  • Transformation from tiled to composite images
    Patent number: 10373544
    Abstract: A three-dimensional (3D) display driver includes a single buffer and a mapping circuit. The single buffer is configured to store a tiled image that includes a contiguously arranged plurality of tiles. Each tile represents a different 3D view of a 3D image. The different 3D views have associated angular ranges and principal angular directions. The mapping circuit is configured to access the stored tiled image and to map pixels from the different 3D views into pixels at corresponding locations in a composite image. The composite image is configured to spatially interleave the pixels from the different 3D views so that pixels from each of the different 3D views are distributed across the composite image. A 3D electronic display includes the mapping circuit.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: August 6, 2019
    Assignee: LEIA, INC.
    Inventor: David A. Fattal
  • POLARIZED BACKLIGHT AND BACKLIT DISPLAY USING THE SAME
    Publication number: 20190227363
    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 light.
    Type: Application
    Filed: October 4, 2017
    Publication date: July 25, 2019
    Inventors: David A. Fattal, Ming Ma, Xuejian Li
  • TRANSPARENT DISPLAY AND METHOD
    Publication number: 20190227335
    Abstract: A transparent display and a transparent multiview display an image while enabling a background scene to be visible through the display. The transparent display includes a light guide having a scattering feature 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 a combination of the light guide and the array of light valves is configured to enable the background scene to be visible through the transparent display. The transparent multiview display includes the light guide and a plurality of multibeam elements configured to scatter guided light from the light guide as a plurality of directional light beam. The transparent multiview display further includes an array of light valves to modulate the directional light beams to provide the display image as a multiview image.
    Type: Application
    Filed: March 31, 2019
    Publication date: July 25, 2019
    Inventor: David A. Fattal
  • Multibeam diffraction grating-based color backlighting
    Patent number: 10345505
    Abstract: Multibeam diffraction grating-based color backlighting includes a plate light guide, a multibeam diffraction grating at a surface of the plate light guide, and light sources laterally displaced from one another in a direction corresponding to a propagation axis of the plate light guide. The light sources produce light of different colors. The plate light guide is to guide light from the light sources. The multibeam diffraction grating is to couple out a portion of the guided light using diffractive coupling as a plurality of light beams of different colors in a plurality of different principal angular directions.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: July 9, 2019
    Assignee: LEIA, INC.
    Inventor: David A. Fattal
  • Coupling-modulated optical resonator
    Patent number: 10338416
    Abstract: Coupling modulation of an optical resonator employs a variable modal index to provide modulation of optical signal coupling. A coupling-modulated optical resonator includes an optical resonator having a coupled portion and a bus waveguide having a modulation section adjacent to and coextensive with and separated by a gap from the coupled portion. The modulation section is to modulate coupling of an optical signal between the optical resonator and the bus waveguide according to a variable difference between a modal index of the bus waveguide modulation section and a modal index of the optical resonator coupled portion.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: July 2, 2019
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Di Liang, David A. Fattal
  • BAR COLLIMATOR, BACKLIGHT SYSTEM AND METHOD
    Publication number: 20190196091
    Abstract: A bar collimator and a backlight system employ diffractive coupling to provide a collimated source of illumination to a backlight. The bar collimator includes a light guide and a diffraction grating disposed on a side of the light guide. The light guide is configured to guide light received from a light source as guided light. The diffraction grating is configured to diffractively couple out a portion of the guided light and to direct the diffractively coupled-out portion toward an input of a backlight as a collimated light having an extent corresponding to a length of the backlight input. A backlight system includes the bar collimator and further includes a light source and a backlight adjacent to the light guide of the bar collimator, the backlight being configured to receive collimated light from a diffraction grating of the bar collimator.
    Type: Application
    Filed: January 21, 2019
    Publication date: June 27, 2019
    Inventors: Xuejian Li, Ming Ma, David A. Fattal
  • OPTICAL DEVICES INCLUDING A HIGH CONTRAST GRATING LENS
    Publication number: 20190173584
    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: Application
    Filed: January 17, 2019
    Publication date: June 6, 2019
    Inventors: Wayne Victor Sorin, MIchael Renne Ty Tan, David A. Fattal, Sagi Varghese Mathai
  • MULTIBEAM DIFFRACTION GRATING-BASED BACKLIGHTING
    Publication number: 20190170926
    Abstract: Multibeam diffraction grating-based backlighting includes a light guide and a multibeam diffraction grating at a surface of the light guide. The light guide is configured to guide light from a light source. The multibeam diffraction grating is configured to couple out a portion of the guided light using diffractive coupling and to direct the diffractively coupled out portion away from the light guide as a plurality of light beams with different principal angular directions having directions corresponding to view directions of a multiview display.
    Type: Application
    Filed: February 7, 2019
    Publication date: June 6, 2019
    Inventors: David A. Fattal, Zhen Peng, Charles M. Santori
  • High contrast grating optoelectronics
    Patent number: 10305248
    Abstract: A high contrast grating optoelectronic apparatus includes an optoelectronic device at a front surface of a substrate. The optoelectronic device is to one or both of emit light and detect light through a back surface of the substrate opposite the front surface. A high contrast grating (HCG) lens is adjacent to and spaced apart from the back surface of the substrate by a spacer. The spacer includes one or both of a wafer-bonded substrate and a cavity. The HCG lens is to focus the light.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: May 28, 2019
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Sagi V. Mathai, Michael Renne Ty Tan, David A. Fattal, Wayne V. Sorin
  • DIFFRACTIVE MULTIBEAM ELEMENT-BASED BACKLIGHTING
    Publication number: 20190155105
    Abstract: A diffractive multiview backlight and a multiview display employ an array of diffractive multibeam elements including a plurality of diffraction gratings 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 diffractive multibeam element of the array is comparable to a size of a sub-pixel in a multiview pixel of the multiview display.
    Type: Application
    Filed: June 30, 2016
    Publication date: May 23, 2019
    Inventors: Francesco Aieta, David A. Fattal
  • OPTICAL SLAB
    Publication number: 20190064442
    Abstract: An apparatus (2) can comprise an optical slab (4) comprising a rigid substrate of substantially transmissive material. The apparatus (2) can also comprise a WDM multiplexer (6) to receive and combine a plurality of optical signals (14, 16 and 20) at different wavelengths to form a combined optical signal (24) in the optical slab (4) having an aggregate power. The apparatus can further comprise a broadcaster (28) to distribute the combined optical signal (24) from the optical slab (4) to each of a plurality of different optical receivers (30, 32 and 34) with a fraction of the aggregate power of the combined optical signal (24).
    Type: Application
    Filed: October 30, 2018
    Publication date: February 28, 2019
    Inventors: Georgios Panotopoulos, Michael Renne Ty Tan, Wayne Victor Sorin, David A. Fattal
  • Method of fabricating a compact photonics platform
    Patent number: 10209445
    Abstract: Compact photonics platforms and methods of forming the same are provided. An example of a compact photonics platform includes a layered structure having an active region along a longitudinal axis, a facet having an angle no less than a critical angle formed at at least one longitudinal end of the active region, and a waveguide having at least one grating coupler positioned in alignment with the angled facet to couple light out to or in from the waveguide.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: February 19, 2019
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Di Liang, David A. Fattal, Marco Florentino, Zhen Peng, Charles M. Santori, Raymond G. Beausoleil
  • Optical devices including a high contrast grating lens
    Patent number: 10193632
    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: May 22, 2013
    Date of Patent: January 29, 2019
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Wayne Victor Sorin, Michael Renne Ty Tan, David A. Fattal, Sagi Varghese Mathai
  • MULTIBEAM ELEMENT-BASED BACKLIGHT AND DISPLAY USING SAME
    Publication number: 20190025494
    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: Application
    Filed: June 8, 2016
    Publication date: January 24, 2019
    Inventors: David A. Fattal, Ming Ma, Xuejian Li
  • PRIVACY DISPLAY AND DUAL-MODE PRIVACY DISPLAY SYSTEM
    Publication number: 20190018186
    Abstract: A privacy display provides a private image exclusively visible within a viewing cone of a viewbox. The privacy display includes a light guide to guide light, a diffraction grating configured to diffractively couple out a portion of the guided light as diffractively coupled-out light and to direct the diffractively coupled-out light into the viewbox, and a light valve array configured to modulate the diffractively coupled-out light to provide the private image. An extent of the viewbox is determined by a collimation factor of the guided light. A dual-mode privacy display system further includes a broad-angle backlight configured to provide broad-angle light to separately provide a public image visible both inside and outside the viewing cone. The private image may be provided in a privacy mode and the public image may be provided in a public mode of the dual-mode privacy display system.
    Type: Application
    Filed: July 25, 2016
    Publication date: January 17, 2019
    Inventor: David A. Fattal
  • Optical slab
    Patent number: 10162116
    Abstract: An apparatus can comprise an optical slab comprising a rigid substrate of substantially transmissive material. The apparatus can also comprise a WDM multiplexer to receive and combine a plurality of optical signals at different wavelengths to form a combined optical signal in the optical slab having an aggregate power. The apparatus can further comprise a broadcaster to distribute the combined optical signal from the optical slab to each of a plurality of different optical receivers with a fraction of the aggregate power of the combined optical signal.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: December 25, 2018
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Georgios Panotopoulos, Michael Renne Ty Tan, Wayne Victor Sorin, David A. Fattal