Patents by Inventor Anthony Needham

Anthony Needham 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).

  • Wavelength selectable optical filter
    Publication number: 20020167730
    Abstract: A wavelength tunable optical filter 14 and a method of making the same. The optical filter 14 comprising two back-to-back Fabry-Perot optical cavities 30 & 40 comprising a fixed mirror 31 common to both cavities with parallel displaceable mirrors 32 & 42 located one on each side of the fixed mirror 31 to adjust the overall known length of the respective cavities. One optical cavity may have greater length than the other optical cavity.
    Type: Application
    Filed: May 1, 2002
    Publication date: November 14, 2002
    Inventors: Anthony Needham, Crofton Brierley, Richard Syms