Patents by Inventor Shengqian Wang

Shengqian Wang 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).

  • Method for resisting noise of co-phasing system of dispersed fringe sensor and optical system
    Patent number: 9829718
    Abstract: The present disclosure provides a method for improving capability of resisting image noise of a co-phasing system of a dispersed fringe sensor. The method comprises the following steps: carrying out a coarse co-phasing adjustment by utilizing the dispersed fringe sensor until the coarse co-phasing is stabilized in a closed loop; collecting a two dimensional dispersed fringe image by the dispersed fringe sensor; superposing the dispersed fringe image along a dispersed direction so as to convert the two dimensional dispersed fringe image to a one dimensional image along an interferential direction; extracting peak values of the main peak, a left side lobe and a right side lobe of the one dimensional image along the interferential direction, and calculating corresponding piston error value of the image by carrying out a Left-subtracting-right LSR algorithm on these peak values.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: November 28, 2017
    Assignee: The Institute of Optics and Electronics, The Chinese Academy of Sciences
    Inventors: Changhui Rao, Yang Li, Shengqian Wang
  • METHOD FOR RESISTING NOISE OF CO-PHASING SYSTEM OF DISPERSED FRINGE SENSOR AND OPTICAL SYSTEM
    Publication number: 20170074639
    Abstract: The present disclosure provides a method for improving capability of resisting image noise of a co-phasing system of a dispersed fringe sensor. The method comprises the following steps: carrying out a coarse co-phasing adjustment by utilizing the dispersed fringe sensor until the coarse co-phasing is stabilized in a closed loop; collecting a two dimensional dispersed fringe image by the dispersed fringe sensor; superposing the dispersed fringe image along a dispersed direction so as to convert the two dimensional dispersed fringe image to a one dimensional image along an interferential direction; extracting peak values of the main peak, a left side lobe and a right side lobe of the one dimensional image along the interferential direction, and calculating corresponding piston error value of the image by carrying out a Left-subtracting-right LSR algorithm on these peak values.
    Type: Application
    Filed: September 15, 2016
    Publication date: March 16, 2017
    Inventors: Changhui Rao, Yang Li, Shengqian Wang