Patents by Inventor Robert D. Audas

Robert D. Audas 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).

  • Method of operating a liquid crystal light valve
    Patent number: 5225921
    Abstract: A method of operating a liquid crystal light valve having a photoconductor and a liquid crystal involves selecting a photoconductor with an appropriate bandgap and an input light having a limited frequency range with a center frequency matching a bandgap of the photoconductor. This results in the light being more uniformly absorbed through the bulk of the photoconductor and the light blocking layer or the light blocking layer and the mirror can be eliminated. The photoconductor can be optimized for sensitivity and short carrier lifetimes necessary for high frame rates.
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: July 6, 1993
    Inventors: Robert D. Audas, Donald E. Brodie