Patents Examined by Nap Thantn
  • Display for contrast enhancement
    Patent number: 4824208
    Abstract: A display comprising optical means for presenting an absence of light over a controlled viewing angle and means for selectively scattering or transmitting light in response to a prescribed input to effect a display of information within said viewing angle.
    Type: Grant
    Filed: October 5, 1987
    Date of Patent: April 25, 1989
    Assignee: Talig Corporation
    Inventors: James L. Fergason, Robert Parker