Patents by Inventor Stuart T. Langley

Stuart T. Langley 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).

  • Monolithic diffraction spectrometer
    Patent number: 5020910
    Abstract: A monolithic diffraction spectrometer having a diffraction grating formed over a light sensing array is provided. The diffraction grating serves to diffract wavelengths of interest to an underlying photosensitive device while diffracting other wavelengths away from the photosensing element. By forming a diffraction grating with a variable pitch, or multiple diffraction gratings having various pitches, any number of specific light wavelengths can be detected with a high degree of precision. When a diffraction grating having a pitch which is in the order of the incident wavelength of light is used, improved sensitivity is achieved.
    Type: Grant
    Filed: March 5, 1990
    Date of Patent: June 4, 1991
    Assignee: Motorola, Inc.
    Inventors: William C. Dunn, Stuart T. Langley