Patents by Inventor Charlotte E. Ludington

Charlotte E. Ludington 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).

  • Hybrid Schottky infrared focal plane array
    Patent number: 4536658
    Abstract: A two dimensional focal plane array of Schottky internal emission photodiodes which sense radiation in their metallic regions on a silicon substrate for infrared imaging. The array is designed for mating with multiplexing circuitry via hybrid bump bonding techniques.
    Type: Grant
    Filed: January 5, 1983
    Date of Patent: August 20, 1985
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Charlotte E. Ludington
  • Schottky barrier infrared detector and process
    Patent number: 4533933
    Abstract: A Schottky barrier diode formed of iridium-silicon material having a frequency response encompassing the 3.0 to 5.0 micrometer infrared band. The bandwidth, uniformity of response and silicon base material of such diodes renders them ideally suited for use in large scale focal plane arrays associated with infrared cameras.
    Type: Grant
    Filed: December 7, 1982
    Date of Patent: August 6, 1985
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Paul W. Pellegrini, Charlotte E. Ludington, Aleksandar Golubovic, Melanie M. Weeks
  • Self-guarding Schottky barrier infrared detector array
    Patent number: 4531055
    Abstract: A two dimensional focal plane array of Schottky photodiodes on a silicon substrate for infrared imaging. The array is designed for mating with multiplexing circuitry and has a self-guarding feature wherein adjacent Schottky electrodes act as guard electrodes. This feature allows a substantial increase of the focal plane area coverage ratio.
    Type: Grant
    Filed: January 5, 1983
    Date of Patent: July 23, 1985
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Freeman D. Shepherd, Jr., Paul W. Pellegrini, Charlotte E. Ludington, Melanie M. Weeks