Patents by Inventor Robert E. Rhoades

Robert E. Rhoades 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).

  • Information display system having transparent holographic optical element
    Patent number: 5291316
    Abstract: An information display system has a display screen which is substantially transparent to a selected band of wavelengths of light and can be mounted on a window. A projector projects an image of light of the wavelengths to which the display screen responds onto the screen to reflect or transmit the selected wavelengths of light from the screen. The screen is formed as a holographic optical element which reflects the light such that an observer is able to see the projected image from the display screen only if his eyes are within a predetermined area, while observers outside of the area see only a substantially transparent display screen on the window.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: March 1, 1994
    Assignee: Astronautics Corporation of America
    Inventors: David P. Haberman, Robert E. Rhoades, Arthur Cox, Richard D. Rallison