Patents by Inventor David J. Trayner

David J. Trayner 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).

  • Viewing apparatus
    Patent number: 5600454
    Abstract: Viewing apparatus for providing a viewer with an apparent 3-D image includes a diffusing holographic optical element screen, horizontal strip lamps for illuminating the screen from a plurality of different positions and a liquid crystal display for effecting spatial modulation of the light from the respective positions so as to illuminate respective images on the screen. The arrangement is such as to provide a plurality of viewing zones whereby each image can be seen only from a corresponding one of the zones.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: February 4, 1997
    Assignee: Richmond Holographic Research and Development Ltd
    Inventors: David J. Trayner, Edwina M. Orr