Patents Assigned to The United States of America as represented by the Dept of the Army
  • Visible imaging device using Darlington phototransistors
    Patent number: 7061074
    Abstract: The present invention is a modified darlington phototransistor wherein a phototransistor is coupled to a Bipolar Junction Transistor (BJT). This design provides a high sensitivity and a fast response and effectively increases the gain of the photocurrent. This circuit is particularly will suited for the readily available CMOS and Bipolar Complementary Metal Oxide Semiconductor (BiCMOS) processes prevalent today.
    Type: Grant
    Filed: October 7, 2004
    Date of Patent: June 13, 2006
    Assignee: The United States of America as represented by the Dept of the Army
    Inventors: Khoa V. Dang, Conrad W Terrill