Patents Assigned to Deposition Sciences Incorporated
  • Lamp that emits colored light
    Patent number: 7176606
    Abstract: A lamp includes a transparent envelope having a first region defining an enclosed interior volume and a closure region adjacent to the first region, a light source in the interior volume and electrically coupled through the closure region, an interference filter coating on the exterior of the first region, and a light absorbing coating that is 7–40 nanometers thick on the exterior of the first region, except in a ring-shaped portion adjacent to the closure region that has a thickness of 50–200 nanometers.
    Type: Grant
    Filed: May 6, 2004
    Date of Patent: February 13, 2007
    Assignees: Patent-Treuhand-Gesellschaft fur Elektrisch Gluhlampen mbH, Deposition Sciences Incorporated
    Inventors: Reinhard Schaefer, Robert Nichols, Florence Taitel