Patents by Inventor Tommy L. Criswell

Tommy L. Criswell 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).

  • Optical sensor using swept wavelength light source
    Patent number: 5650612
    Abstract: An optical sensor system uses a light source which outputs light at a plurality of wavelengths which vary with time in a manner such that only one wavelength is output at any one point in time; and a transducer which modulates light at each wavelength in a manner indicative of the parameter (for example, position or temperature) begin sensed. The transducer's output is, therefore, an optical signal in which the modulated intensity varies with time since only one wavelength is output at any one point in time. Because only a single wavelength is output at any one time, there is no need for an optical demultiplexer and detector array. Only a single detector is needed.
    Type: Grant
    Filed: January 11, 1995
    Date of Patent: July 22, 1997
    Assignee: The Boeing Company
    Inventors: Tommy L. Criswell, Raymond W. Huggins, Mahesh C. Reddy