Patents Assigned to Universal Applied Sciences Inc.
  • Patent number: 5018007
    Abstract: A relatively thin projection screen includes a sheet of parallel, specially treated fiber optic cables that emit light transversely, and an overlying liquid crystal display screen formed of a plurality of adjacent and individually modulatable liquid crystal shutters. A dot matrix of pixels is generated by controlling the sequential transmission of light to the optical fibers, and the transparency or opacity of the overlying shutters. As each row of the optical fibers is sequentially energized by a light source, the columns of liquid crystal shutters are simultaneously opened or closed in accordance with signals derived from a television video signal. This provides an optical reproduction of the television signal from the pixels of light defined at the cross over points of the rows and columns. The liquid crystal shutters are modulated to allow a varying amount of light to pass through so that different levels of brightness may be obtained.
    Type: Grant
    Filed: August 4, 1989
    Date of Patent: May 21, 1991
    Assignee: Universal Applied Sciences Inc.
    Inventors: Paul W. Lang, Franklin C. Gribshaw