Patents Examined by Thomas Robbias
  • Patent number: 5488504
    Abstract: A device for converting a set of electronic signals that represent an image into a coherent image includes a two-dimensional array of asymmetric Fabry-Perot (ASFP), quantum-well-based optical modulators connected on a pixel-by-pixel basis to a two-dimensional array of drive circuits located on an integrated circuit. Electronic signals received by the integrated circuit cause the pixel drive circuits to change a bias voltage applied across the optical modulator section and, thereby, change the optical properties of the optical modulator section of the device. The two-dimensional array can be used to impart intensity-only, phase-only, or phase-and-intensity variations onto a beam of coherent laser light incident on the array. This coherent image can be used with other optical elements to form optical processing machines and optical storage devices.
    Type: Grant
    Filed: August 20, 1993
    Date of Patent: January 30, 1996
    Assignee: Martin Marietta Corp.
    Inventors: Terrance L. Worchesky, Kenneth J. Ritter