Patents by Inventor Charles S. Kaufman

Charles S. Kaufman 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).

  • Patent number: 6891160
    Abstract: A temperature dependent focal plane array operates without a temperature stabilization cooler and/or heater over a wide range of ambient temperatures. Gain, offset and/or bias correction tables are provided in a flash memory in memory pages indexed by the measured temperature of the focal plane array. The memory stores a calibration database, which is accessed using a logic circuit which generates a memory page address from a digitized temperature measurement of the focal plane array. The calibration database is comprised of an array of bias, gain and offset values for each pixel in the focal plane array for each potential operating temperature over the entire range of potential operating temperatures. The bias, gain and offset data within the database are read out, converted to analog form, and used by analog circuits to correct the focal plane array response.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: May 10, 2005
    Assignee: Irvine Sensors Corporation
    Inventors: Charles S. Kaufman, Randolph S. Carson, William B. Hornback
  • Patent number: 6596997
    Abstract: The illustrated embodiment of the invention is an improvement to an infrared camera in which an uncooled warm stop is provided which includes an array of miniature retro-reflectors on its rear surface oriented toward the detector in the camera and away from the exterior light source of interest instead of having a diffuse (i.e., Lambertian or white) or specular (i.e., mirror-like) reflector on the rear or interior surface of the warm stop.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: July 22, 2003
    Assignee: Irvine Sensors Corporation
    Inventor: Charles S. Kaufman
  • Publication number: 20030122077
    Abstract: A temperature dependent focal plane array operates without a temperature stabilization cooler and/or heater over a wide range of ambient temperatures. Gain, offset and/or bias correction tables are provided in a flash memory in memory pages indexed by the measured temperature of the focal plane array. The memory stores a calibration database, which is accessed using a logic circuit which generates a memory page address from a digitized temperature measurement of the focal plane array. The calibration database is comprised of an array of bias, gain and offset values for each pixel in the focal plane array for each potential operating temperature over the entire range of potential operating temperatures. The bias, gain and offset data within the database are read out, converted to analog form, and used by analog circuits to correct the focal plane array response.
    Type: Application
    Filed: October 25, 2002
    Publication date: July 3, 2003
    Inventors: Charles S. Kaufman, Randolph S. Carson, William B. Hornback
  • Publication number: 20030025083
    Abstract: The illustrated embodiment of the invention is an improvement to an infrared camera in which an uncooled warm stop is provided which includes an array of miniature retro-reflectors on its rear surface oriented toward the detector in the camera and away from the exterior light source of interest instead of having a diffuse (i.e., Lambertian or white) or specular (i.e., mirror-like) reflector on the rear or interior surface of the warm stop.
    Type: Application
    Filed: August 3, 2001
    Publication date: February 6, 2003
    Inventor: Charles S. Kaufman
  • Publication number: 20020166967
    Abstract: A temperature dependent focal plane array operates without a temperature stabilization cooler and/or heater over a wide range of ambient temperatures. Gain, offset and/or bias correction tables are provided in a flash memory in memory pages indexed by the measured temperature of the focal plane array. The memory stores a calibration database, which is accessed using a logic circuit which generates a memory page address from a digitized temperature measurement of the focal plane array. The calibration database is comprised of an array of bias, gain and offset values for each pixel in the focal plane array for each potential operating temperature over the entire range of potential operating temperatures. The bias, gain and offset data within the database are read out, converted to analog form, and used by analog circuits to correct the focal plane array response.
    Type: Application
    Filed: May 11, 2001
    Publication date: November 14, 2002
    Inventors: Charles S. Kaufman, Randolph S. Carlson, William B. Hornback
  • Patent number: 6476392
    Abstract: A temperature dependent focal plane array operates without a temperature stabilization cooler and/or heater over a wide range of ambient temperatures. Gain, offset and/or bias correction tables are provided in a flash memory in memory pages indexed by the measured temperature of the focal plane array. The memory stores a calibration database, which is accessed using a logic circuit which generates a memory page address from a digitized temperature measurement of the focal plane array. The calibration database is comprised of an array of bias, gain and offset values for each pixel in the focal plane array for each potential operating temperature over the entire range of potential operating temperatures. The bias, gain and offset data within the database are read out, converted to analog form, and used by analog circuits to correct the focal plane array response.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: November 5, 2002
    Assignee: Irvine Sensors Corporation
    Inventors: Charles S. Kaufman, Randolph S. Carson, William B. Hornback