Patents by Inventor Mark R. Ehlers

Mark R. Ehlers 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).

  • Thermal imaging system for a military vehicle
    Patent number: 5600491
    Abstract: A thermal imaging system (100) for a vehicle includes an objective lens (104) for receiving an image of the object, an eyepiece lens (102) for viewing the image of the object, and a compensator lens (106) movably located between the objective and eyepiece lenses (104, 102) for providing a thermal image of the object. The system (100) includes a servo motor control system (107, 109, 110, 112 and 114) for controlling the position of the compensator lens (106) based upon temperature, range and field of view to provide an accurate thermal image of the object.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: February 4, 1997
    Assignee: Hughes Electronics
    Inventors: David A. Hull, Richard R. Smith, Mark R. Ehlers, Michael J. Brothers, Kenneth W. Lee, Dietmar Hanke