Patents by Inventor Sidney E. Levingston

Sidney E. Levingston 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).

  • Laser power meter
    Patent number: 7077564
    Abstract: A laser power meter and associated method are disclosed. The laser power meter has an absorber that is placed in a path of a laser beam during a power measurement, a temperature sensor for measuring the temperature of the absorber, a differentiator for determining a rate of change of the temperature of the absorber, and a processor that computes an estimated power of the laser beam based on the temperature and its rate of change without considering power related loss effects and then computes the power of the laser beam based on the estimated power and the temperature and its rate of change.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: July 18, 2006
    Assignee: Coherent, Inc.
    Inventors: James Schloss, Sidney E. Levingston, Sean Bergman