Patents by Inventor Doris Boebel

Doris Boebel 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).

  • Illumination device
    Patent number: 5323302
    Abstract: An illumination device comprises a light source, a reflector which reflects light emitted by the light source, a light disc, and a plurality of optically active elements arranged in a path of rays of the light reflected by the reflector for at least one of dispersing and deviating of the light, the optically active elements being formed as diffraction-optical elements and together forming a diffraction grating which is formed as a member which is separate from the light disc.
    Type: Grant
    Filed: February 26, 1993
    Date of Patent: June 21, 1994
    Assignee: Robert Bosch GmbH
    Inventors: Johannes-Gerhard Bertling, Doris Boebel, Peter Schoettle