Patents by Inventor Christopher Glenister

Christopher Glenister 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).

  • Magnetic lens, method for focusing charged particles and charged particle energy analyzer
    Patent number: 8164066
    Abstract: The invention provides a magnetic lens for generating a magnetic imaging field to focus charged particles emitted from a sample, the lens comprising a central pole piece and an outer pole piece disposed about the central pole piece, wherein the lens comprises a magnetic moveable element for movement relative to at least one of the pole pieces, whereby a focal length of the lens is variable by said movement of the magnetic moveable element, thereby enabling a zoom facility for changing the magnification of an image. The movement of the moveable element preferably changes the magnetic circuit between the pole pieces. Also provided is a method of focusing charged particles emitted from a sample and a charged particle energy analyzer, such as an imaging photoelectron spectroscopy system.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: April 24, 2012
    Assignee: VG Systems Limited
    Inventors: Bryan Barnard, Christopher Glenister
  • Magnetic Lens, Method for Focusing Charged Particles and Charged Particle Energy Analyzer
    Publication number: 20110012018
    Abstract: The invention provides a magnetic lens for generating a magnetic imaging field to focus charged particles emitted from a sample, the lens comprising a central pole piece and an outer pole piece disposed about the central pole piece, wherein the lens comprises a magnetic moveable element for movement relative to at least one of the pole pieces, whereby a focal length of the lens is variable by said movement of the magnetic moveable element, thereby enabling a zoom facility for changing the magnification of an image. The movement of the moveable element preferably changes the magnetic circuit between the pole pieces. Also provided is a method of focusing charged particles emitted from a sample and a charged particle energy analyzer, such as an imaging photoelectron spectroscopy system.
    Type: Application
    Filed: July 16, 2010
    Publication date: January 20, 2011
    Inventors: Bryan BARNARD, Christopher Glenister