Patents by Inventor David Paganin

David Paganin 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).

  • Phase determination of a radiation wave field
    Patent number: 7039553
    Abstract: A method and apparatus for quantitative determination of the phase of a radiation wave field is disclosed. A representative measure of the rate of change of intensity of the radiation wave field over a selected surface extending generally across the wave field is transformed to produce a first integral transform representation. A first filter is applied to the first integral transform representation corresponding to the inversion of a first differential operator reflected in the measure of rate of change of intensity to produce a first modified integral transform representation. An inverse of the first integral transform is applied to the first modified integral transform representation to produce an untransformed representation. The untransformed representation is corrected based on a measure of intensity over said selected surface and again transformed to produce a second integral transform representation.
    Type: Grant
    Filed: November 2, 2004
    Date of Patent: May 2, 2006
    Assignee: The University of Melbourne
    Inventors: Keith Nugent, David Paganin, Anton Barty
  • Phase determination of a radiation wave field
    Patent number: 6885442
    Abstract: A method of quantitative determination of the phase of a radiation wave field including the steps of producing a representative measure of the rate of change of intensity of the radiation wave field over a selected surface extending generally across the wave field; producing a representative measure of intensity of the radiation wave filed over the selected surface; transforming the measure of rate of change of intensity to produce a first integral transform representation and applying to the first integral transform representation a first filter corresponding to the inversion of a first differential operator reflected in the measure of rate of change of intensity to produce a first modified integral transform representation; applying an inverse of the first integral transform to the first modified integral transform representation to produce an untransformed representation; applying a correction based on the measure of intensity over the selected surface to the untransformed representation; transforming the
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: April 26, 2005
    Assignee: The University of Melbourne
    Inventors: Keith Nugent, David Paganin, Anton Barty
  • Phase determination of a radiation wave field
    Publication number: 20050062957
    Abstract: A method and apparatus for quantitative determination of the phase of a radiation wave field is disclosed. A representative measure of the rate of change of intensity of the radiation wave field over a selected surface extending generally across the wave field is transformed to produce a first integral transform representation. A first filter is applied to the first integral transform representation corresponding to the inversion of a first differential operator reflected in the measure of rate of change of intensity to produce a first modified integral transform representation. An inverse of the first integral transform is applied to the first modified integral transform representation to produce an untransformed representation. The untransformed representation is corrected based on a measure of intensity over said selected surface and again transformed to produce a second integral transform representation.
    Type: Application
    Filed: November 2, 2004
    Publication date: March 24, 2005
    Inventors: Keith Nugent, David Paganin, Anton Barty