Patents by Inventor Benjamin Ihas

Benjamin Ihas 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: 11067738
    Abstract: An imaging directional backlight apparatus includes a waveguide and light source array for providing large area directed illumination from localized light sources. The waveguide may include a stepped structure in which steps may include extraction features optically hidden to guided light, propagating in a forward direction. Returning light propagating in a backward direction may be refracted, diffracted, or reflected by the features to provide discrete illumination beams exiting from the top surface of the waveguide. Viewing windows are formed through imaging individual light sources and defines the relative positions of system elements and ray paths. Alignment of the waveguide to mechanical and optical components may be provided by surface relief features of the waveguide arranged in regions adjacent the input surface and intermediate the light emitting regions of the light sources.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: July 20, 2021
    Assignee: RealD Spark, LLC
    Inventors: Benjamin Ihas, Michael G. Robinson, Robert Ramsey
  • Patent number: 10948648
    Abstract: A backlight includes a directional waveguide and a light source array, for providing large area directed illumination from localized light sources. Interfaces are provided between the directional waveguide and optical components adjacent the directional waveguide such that the coefficient of friction at the waveguide interfaces is greater than the coefficient of friction at least one outer interface on each side of the waveguide in the stack. Damage from compressive forces on the optical stack may be reduced, achieving improved optical performance and lifetime. Privacy display, low stray light display and autostereoscopic display may be provided with high uniformity, long lifetime and reduced cost mechanical components.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: March 16, 2021
    Assignee: RealD Spark, LLC
    Inventors: Benjamin Ihas, Robert A. Ramsey, Graham J. Woodgate, Jonathan Harrold
  • Publication number: 20210041619
    Abstract: An imaging directional backlight apparatus includes a waveguide and light source array for providing large area directed illumination from localized light sources. The waveguide may include a stepped structure in which steps may include extraction features optically hidden to guided light, propagating in a forward direction. Returning light propagating in a backward direction may be refracted, diffracted, or reflected by the features to provide discrete illumination beams exiting from the top surface of the waveguide. Viewing windows are formed through imaging individual light sources and defines the relative positions of system elements and ray paths. Alignment of the waveguide to mechanical and optical components may be provided by surface relief features of the waveguide arranged in regions adjacent the input surface and intermediate the light emitting regions of the light sources.
    Type: Application
    Filed: June 30, 2020
    Publication date: February 11, 2021
    Inventors: Benjamin Ihas, Michael G. Robinson, Robert Ramsey
  • Publication number: 20200225402
    Abstract: A directional backlight apparatus includes a directional waveguide and a light source array, for providing large area directed illumination from localized light sources. Interfaces are provided between the directional waveguide and optical components adjacent the directional waveguide such that the coefficient of friction at the waveguide interfaces is greater than the coefficient of friction at least one outer interface on each side of the waveguide in the stack. Damage from compressive forces on the optical stack may be reduced, achieving improved optical performance and lifetime. Privacy display, low stray light display and autostereoscopic display may be provided with high uniformity, long lifetime and reduced cost mechanical components.
    Type: Application
    Filed: September 28, 2018
    Publication date: July 16, 2020
    Inventors: Benjamin Ihas, Robert A. Ramsey, Graham J. Woodgate, Jonathan Harrold
  • Publication number: 20070091399
    Abstract: The present invention provides a method and system for increasing the holographic storage capacity of a holographic recording medium using an irradiance-tailoring (e.g., optical) element by changing the irradiance profile of the modulated object beam (e.g., by imparting motion to an irradiance-tailoring element and/or the holographic recording medium and/or by reconfiguring (e.g., periodically) the phase profile of a stationary irradiance-tailoring (e.g., optical) element) to minimize the effects of fixed-pattern noise buildup from occurring in the holographic recording medium.
    Type: Application
    Filed: December 29, 2005
    Publication date: April 26, 2007
    Applicant: InPhase Technologies, Inc.
    Inventors: Benjamin Ihas, Samuel Weaver, Ken Anderson, Aaron Wegner
  • Publication number: 20070082179
    Abstract: A method and apparatus for fabricating a multi-layer optical article includes grasping an outer surface of a first substrate with a first holder, whereby the outer surface of the first substrate is held to an inner surface of the first holder, grasping an outer surface of a second substrate with a second holder, whereby the outer surface of the second substrate is held to an inner surface of the second holder, arranging the inner surfaces of the holders to face one another, arranging at least one spacer element between the holders, disposing an adherent on the inner surface of one of the substrates, moving the holders together such that the holders contact the at least one spacer and the substrates contact the adherent, and at least partially curing the adherent while the inner surfaces of the holders are in a selected angular relationship.
    Type: Application
    Filed: October 7, 2005
    Publication date: April 12, 2007
    Inventors: James Wade, Bradley Sissom, Benjamin Ihas, Mark Michaels, Michael Tackitt, Brian Riley, Lisa Dhar, Kevin Curtis
  • Publication number: 20050259303
    Abstract: A novel photoimageable system for a two-chemistry system containing liquid photoreactive asymmetric acrylate compound containing sulfur, aromatic moieties, and optionally bromine, and an aluminum salt compound is disclosed. The photoimageable system has high dynamic range (M/#) and sensitivity and unexpectedly high temperature and high humidity resistance. The photoimageable system retains its dynamic range when exposed to 60° C. for 4 weeks while a composition without the aluminum salt compound lost 75% of its dynamic range under similar exposure conditions. In one embodiment, 2-10 weight % of a thio-butylacrylate dissolved in a two-component urethane matrix containing 0.002 to 1 weight % of the aluminum salt compound showed a dynamic range of greater than 5 for a 200 microns thick sample and retained more than 80% of the dynamic range after 4 weeks exposure at 60° C.
    Type: Application
    Filed: May 29, 2003
    Publication date: November 24, 2005
    Inventors: Songvit Setthachayanon, Xuan Phan, Mark Michaels, Benjamin Ihas