Patents by Inventor Andrew Xiang

Andrew Xiang 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).

  • Spectrometers with aberration-corrected concave diffraction gratings and transmissive aberration correctors
    Patent number: 8379203
    Abstract: The invention generally relates to spectrometers and optical systems useful therein. More particularly, the invention generally relates to optical systems and systems having improved functionalities, flexibilities, and design options. For example, optical systems of the invention employ an aberration-corrected concave grating along with one or more transmissive aberration correctors.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: February 19, 2013
    Inventors: Lian-Qin Xiang, Andrew Xiang
  • SPECTROMETERS WITH ABERRATION-CORRECTED CONCAVE DIFFRACTION GRATINGS AND TRANSMISSIVE ABERRATION CORRECTORS
    Publication number: 20100277732
    Abstract: The invention generally relates to spectrometers and optical systems useful therein. More particularly, the invention generally relates to optical systems and systems having improved functionalities, flexibilities, and design options. For example, optical systems of the invention employ an aberration-corrected concave grating along with one or more transmissive aberration correctors.
    Type: Application
    Filed: October 19, 2009
    Publication date: November 4, 2010
    Inventors: Lian-Qin Xiang, Andrew Xiang