Patents by Inventor Samuel W. Lichtman

Samuel W. Lichtman 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).

  • Undersea ranging-communications from altitude via laser
    Patent number: 4050819
    Abstract: An optical means for detecting and/or communicating with underwater objects rom airborne platforms wherein a number of laser sources are collimated so as to illuminate a particular portion of the ocean surface from the airborne platform. Thereafter, use is made of the non-linear optical phenomena resulting from the interaction of the various source characteristics (power and wavelength) with the water media to detect modulation of the specularly reflected energy to provide indications of the presence of submerged objects.
    Type: Grant
    Filed: July 2, 1976
    Date of Patent: September 27, 1977
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Samuel W. Lichtman
  • Transmitter for use in a laser communication and ranging system
    Patent number: 4017146
    Abstract: A transmitter for extending the operational range capability of laser comications and ranging systems. A narrow laser beam is angle deflected to provide a raster scan equivalent to a broad beam scan.
    Type: Grant
    Filed: March 4, 1976
    Date of Patent: April 12, 1977
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Samuel W. Lichtman