Patents Examined by Lynn Vandenburgh Kent
  • Method and apparatus for improving the efficiency of an acousto-optic deflector
    Patent number: 4473275
    Abstract: An acousto-optic deflector or modulator is shown which diffracts a beam of incident light from a zero order beam into a first order beam. Normally such diffraction deflects but 1% of the light energy within the incident beam. This deflection may be improved by successive transits of the light beam across the acoustic energy wave within the deflector.
    Type: Grant
    Filed: January 25, 1982
    Date of Patent: September 25, 1984
    Assignee: Litton Systems, Inc.
    Inventors: Edward H. David, Jr., Otis G. Zehl, Michael G. Price
  • Acousto-optic deflector utilizing internal deflection
    Patent number: 4473276
    Abstract: An acousto-optic deflector is shown which diffracts a beam of incident light from a zero order beam into a first order beam. Normally such diffraction deflects but 1% of the light energy within the incident beam. This deflection may be improved by successive, internal transits of the light beam across the acoustic energy wave within the deflector. Such internal transits are accomplished by forming the deflector into a cylinder and reflection coating the outer surface of that cylinder to form a mirror pair.
    Type: Grant
    Filed: January 25, 1982
    Date of Patent: September 25, 1984
    Assignee: Litton Systems, Inc.
    Inventors: Edward H. David, Jr., Otis G. Zehl, Michael G. Price