Patents by Inventor Evelyn Hope Monsay

Evelyn Hope Monsay 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).

  • Sensor for optically sensing air borne acoustic waves
    Patent number: 6924895
    Abstract: The present invention relates to an optical sensor of air borne acoustic waves. The sensor comprises means for producing mutually coherent optical sampling and reference beams, which may be combined to form an intermediate frequency carrier, the sampling beam being exposed to the acoustic field, in which acoustic wave induced density variations occur. These density variations produce a variation in the index of refraction and thereupon a phase modulation of the sampling beam. This phase modulation may be recovered by an optical detector and a phase detector as an electrical signal representative of the acoustic signal. The invention has application to security systems.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: August 2, 2005
    Assignee: Lockheed Martin Corporation
    Inventors: Joseph Lawrence Chovan, Martin Francis Lowry, Evelyn Hope Monsay, William Arthur Penn, William Pattee Whyland, Lawrence Richard Snowman
  • Sensor for optically sensing air borne acoustic waves
    Patent number: 6714306
    Abstract: The present invention relates to an optical sensor of air borne acoustic waves. The sensor comprises means for producing mutually coherent optical sampling and reference beams, which may be combined to form an intermediate frequency carrier, the sampling beam being exposed to the acoustic field, in which acoustic wave induced density variations occur. These density variations produce a variation in the index of refraction and thereupon a phase modulation of the sampling beam. This phase modulation may be recovered by an optical detector and a phase detector as an electrical signal representative of the acoustic signal. The invention has application to security systems.
    Type: Grant
    Filed: May 19, 1986
    Date of Patent: March 30, 2004
    Assignee: Lockheed Martin Corporation
    Inventors: Joseph Lawrence Chovan, Martin Francis Lowry, Evelyn Hope Monsay, William Arthur Penn, William Pattee Whyland, Lawrence Richard Snowman
  • Sensor for optically sensing air borne acoustic waves
    Publication number: 20040021873
    Abstract: The present invention relates to an optical sensor of air borne acoustic waves. The sensor comprises means for producing mutually coherent optical sampling and reference beams, which may be combined to form an intermediate frequency carrier, the sampling beam being exposed to the acoustic field, in which acoustic wave induced density variations occur. These density variations produce a variation in the index of refraction and thereupon a phase modulation of the sampling beam. This phase modulation may be recovered by an optical detector and a phase detector as an electrical signal representative of the acoustic signal.
    Type: Application
    Filed: August 1, 2003
    Publication date: February 5, 2004
    Inventors: Joseph Lawrence Chovan, Martin Francis Lowry, Evelyn Hope Monsay, William Arthur Penn, William Pattee Whyland, Lawrence Richard Snowman