Patents by Inventor Benny S. Svardal

Benny S. Svardal 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).

  • Single-path color video projection systems employing reflective liquid crystal display devices
    Patent number: 6839095
    Abstract: A multimedia projector (100) includes a single-path frame-sequential color optical system in which light rays emitted by a light source (14) propagate through a color wheel (102) and an optical integrator (16, 120, 122), and are directed toward a transflective polarizing beam splitter (40) that separates them into P-polarized components (76) and S-polarized components (78). The P-polarized components are transmitted toward a reflective LCD (26) in which pixels in a dark state reflect the light rays without a polarization change and return them through the transflective polarizing beam splitter, whereas pixels in a bright state reflect the light rays with a 90° polarization change as S-polarized light rays (112), which are reflected by the transflective polarizing beam splitter toward a projection lens (27).
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: January 4, 2005
    Assignee: InFocus Corporation
    Inventors: Serge Bierhuizen, Lawrence J. Gianola, Benny S. Svardal
  • Single-path color video projection systems employing corrective optics
    Publication number: 20040257537
    Abstract: A multimedia projector (100) includes a single-path frame-sequential color optical system in which light rays emitted by a light source (14) propagate through a color wheel (102) and an optical integrator (16, 120, 122), and are directed toward a transflective polarizing beam splitter (40) that separates them into P-polarized components (76) and S-polarized components (78). The P-polarized components are transmitted toward a reflective LCD (26) in which pixels in a dark state reflect the light rays without a polarization change and return them through the transflective polarizing beam splitter, whereas pixels in a bright state reflect the light rays with a 90° polarization change as S-polarized light rays (112), which are reflected by the transflective polarizing beam splitter toward a projection lens (27).
    Type: Application
    Filed: July 22, 2004
    Publication date: December 23, 2004
    Inventors: Serge Bierhuizen, Lawrence J. Gianola, Benny S. Svardal
  • Single-path color video projection systems employing reflective liquid crystal display devices
    Publication number: 20030214617
    Abstract: A multimedia projector (100) includes a single-path frame-sequential color optical system in which light rays emitted by a light source (14) propagate through a color wheel (102) and an optical integrator (16, 120, 122), and are directed toward a transflective polarizing beam splitter (40) that separates them into P-polarized components (76) and S-polarized components (78). The P-polarized components are transmitted toward a reflective LCD (26) in which pixels in a dark state reflect the light rays without a polarization change and return them through the transflective polarizing beam splitter, whereas pixels in a bright state reflect the light rays with a 90° polarization change as S-polarized light rays (112), which are reflected by the transflective polarizing beam splitter toward a projection lens (27).
    Type: Application
    Filed: May 17, 2002
    Publication date: November 20, 2003
    Inventors: Serge Bierhuizen, Lawrence J. Gianola, Benny S. Svardal