Patents by Inventor David D. Dawson

David D. Dawson 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).

  • Semiconductor illumination system with expansion matched components
    Patent number: 5544184
    Abstract: A semiconductor laser that includes a monolithic submount with a light emitting source aligned along one side thereby defining a radiation path over which the emitted light propagates. The submount includes two notches that flank the light emitting source. A micro-lens is mounted adjacent to the light emitting source by attaching to the submount with either epoxy or solder. Finally, the components of the semiconductor laser have matching coefficients of thermal expansion so that the optical alignment of the light emitting source and the micro-lens is maintained notwithstanding thermal cycling.
    Type: Grant
    Filed: June 10, 1994
    Date of Patent: August 6, 1996
    Assignee: SDL, Inc.
    Inventors: Edmund L. Wolak, John Endriz, D. Philip Worland, David D. Dawson, Donald R. Scifres