Patents by Inventor Drew L'Esperance

Drew L'Esperance 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 Schlieren imaging
    Patent number: 9232117
    Abstract: A Schlieren imaging system can comprise a digital display configured to provide a background for Schlieren imaging, a cutoff filter onto which the background is focused, and a camera configured to image the cutoff filter and the background to facilitate Schlieren imaging. A calibration method for the Schlieren imaging system can comprise forming a pixel image on a digital display, focusing the pixel image on the cutoff filter, imaging the cutoff filter and the pixel image with a camera; and moving the pixel image with respect to the cutoff filter to align the pixel image with respect to the cutoff filter to facilitate Schlieren imaging. Thus, alignment of the Schlieren imaging system can be substantially simplified.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: January 5, 2016
    Assignee: MetroLaser, Inc.
    Inventors: Benjamin D. Buckner, Drew L'Esperance
  • Digital Schlieren Imaging
    Publication number: 20140267781
    Abstract: A Schlieren imaging system can comprise a digital display configured to provide a background for Schlieren imaging, a cutoff filter onto which the background is focused, and a camera configured to image the cutoff filter and the background to facilitate Schlieren imaging. A calibration method for the Schlieren imaging system can comprise forming a pixel image on a digital display, focusing the pixel image on the cutoff filter, imaging the cutoff filter and the pixel image with a camera; and moving the pixel image with respect to the cutoff filter to align the pixel image with respect to the cutoff filter to facilitate Schlieren imaging. Thus, alignment of the Schlieren imaging system can be substantially simplified.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Inventors: Benjamin D. Buckner, Drew L'Esperance