Patents by Inventor David Anthony Stringfellow

David Anthony Stringfellow 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).

  • Apparatus and method of producing a light beam for an optical measurement instrument
    Patent number: 8456631
    Abstract: An apparatus for providing a light beam for use in a diffraction instrument (1) includes a device (10; 17; 28) for generating a light beam; and means (12, 21; 24) for shaping the light beam generated by the device (10; 17; 28), dimensioned, in use, to determine the beam shape, and including: an aperture (21; 25) and means (13; 24) for rejecting spatial frequency components above a certain range in the light beam. The apparatus further includes a spatial low-pass filter (14; 15; 26; 27) arranged to filter a beam provided by the beam shaping means.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: June 4, 2013
    Assignee: Malvern Instruments, Ltd.
    Inventors: David Michael Spriggs, David Anthony Stringfellow
  • APPARATUS AND METHOD OF PRODUCING A LIGHT BEAM FOR AN OPTICAL MEASUREMENT INSTRUMENT
    Publication number: 20100315636
    Abstract: An apparatus for providing a light beam for use in a diffraction instrument (1) includes a device (10; 17; 28) for generating a light beam; and means (12, 21; 24) for shaping the light beam generated by the device (10; 17; 28), dimensioned, in use, to determine the beam shape, and including: an aperture (21; 25) and means (13; 24) for rejecting spatial frequency components above a certain range in the light beam. The apparatus further includes a spatial low-pass filter (14; 15; 26; 27) arranged to filter a beam provided by the beam shaping means.
    Type: Application
    Filed: June 30, 2008
    Publication date: December 16, 2010
    Inventors: David Michael Spriggs, David Anthony Stringfellow