Patents Assigned to Foresight Enterprises, Inc.
  • Compensated densitometer
    Patent number: 4080075
    Abstract: The output of a test light of a densitometer is divided into a test beam and a reference beam. The test beam is caused to traverse film samples, and impinge on a detector that produces a signal responsive to the intensity of the received light. A second detector is arranged to receive the reference beam, which does not traverse the film sample. A measuring system is responsive to the output of the first detector, and utilizes the output of the second detector to compensate for variations in the intensity of the test light.
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: March 21, 1978
    Assignee: Foresight Enterprises, Inc.
    Inventor: Bernard J. Berg