Patents by Inventor James D. Barrie

James D. Barrie 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).

  • Tunable solid state thin film optical filter
    Patent number: 6522469
    Abstract: A thin film electrical optical filter includes a thin film electrooptical dielectric having a voltage controlled electrooptical refractive index that is disposed between opposing stacks of alternative layers having differing refractive indices for transmitting received incident light through a target passband. An applied voltage to the electrooptical dielectric can serve to alter the actual passband to the target passband for compensating for thin film manufacturing tolerances for producing controllable optical filters with precise passbands.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: February 18, 2003
    Assignee: The Aerospace Corporation
    Inventors: Peter D. Fuqua, James D. Barrie