Patents by Inventor Michel Roncillat

Michel Roncillat 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).

  • Display devices
    Patent number: 4088400
    Abstract: An improvement in electro-optical display devices utilizing polarized light is disclosed, in which the linearly polarized light emerging from the display device is picked up by a diffuser and reaches the observer eyes after passing through a linear polarizer. The contrast is thus enhanced and the display can be used in presence of strong ambient lighting. The contrast can be still further improved by arranging at either side of the diffuser two suitably oriented quarter-wave plates.
    Type: Grant
    Filed: December 21, 1973
    Date of Patent: May 9, 1978
    Assignee: Thomson-CSF
    Inventors: Georges Assouline, Michel Hareng, Michel Roncillat, Eugene Leiba