Patents by Inventor Weijuan Qu

Weijuan Qu 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).

  • Digital holographic microscopy
    Patent number: 8363316
    Abstract: An optical configuration for a digital holographic microscope and a method for digital holographic microscopy are presented. In one embodiment, digital off-axis holograms are obtained using a cube beam splitter (110) to both split and combine a diverging spherical wavefront emerging from a microscope objective (108). When a plane numerical reference wavefront is used for the reconstruction of the recorded digital hologram, the phase curvature introduced by the microscope objective (108) together with the illuminating wave to the object wave can be physically compensated.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: January 29, 2013
    Assignees: Nanyang Technological University, Ngee Ann Polytechnic
    Inventors: Anand Krishna Asundi, Weijuan Qu, Oi Choo Chee
  • DIGITAL HOLOGRAPHIC MICROSCOPY
    Publication number: 20110043878
    Abstract: An optical configuration for a digital holographic microscope and a method for digital holographic microscopy are presented. In one embodiment, digital off-axis holograms are obtained using a cube beam splitter (110) to both split and combine a diverging spherical wavefront emerging from a microscope objective (108). When a plane numerical reference wavefront is used for the reconstruction of the recorded digital hologram, the phase curvature introduced by the microscope objective (108) together with the illuminating wave to the object wave can be physically compensated.
    Type: Application
    Filed: August 21, 2009
    Publication date: February 24, 2011
    Applicants: Nanyang Technological University, Ngee Ann Polytechnic
    Inventors: Anand Krishna Asundi, Weijuan Qu, Oi Choo