Patents by Inventor Dachun GAN

Dachun GAN 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).

  • Stitching-measurement device and stitching-measurement method
    Patent number: 11365964
    Abstract: Disclosed is a stitching-measurement device adapted for performing stitching-measurement on a surface of a concave spherical lens, including: an interferometer, a reference lens, a first plane mirror, a second plane mirror, a first adjustment mechanism, a second adjustment mechanism, a concave spherical object to be measured, a motion table and a control mechanism, the first plane mirror being mounted on the first adjustment mechanism configured to change a position of the first plane mirror; the second plane mirror being mounted on the second adjustment mechanism configured to change a position of the second plane mirror; the concave spherical object to be measured being placed on the motion table configured to change a position of the concave spherical object to be measured; the control mechanism communicating with the interferometer, the first adjustment mechanism, the second adjustment mechanism, and the motion table for issuing control signals, wherein by the first adjustment mechanism and the second adj
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: June 21, 2022
    Assignee: The Institute of Optics and Electronics, The Chinese Academy of Sciences
    Inventors: Fuchao Xu, Xin Jia, Dachun Gan, Tingwen Xing
  • Detection device for detecting lens surface in stitching interferometer
    Patent number: 11268808
    Abstract: A detection device adapted to detect lens surface and a stitching interferometer including the same are disclosed.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: March 8, 2022
    Assignee: The Institute of Optics and Electronics, The Chinese Academy of Sciences
    Inventors: Dachun Gan, Fuchao Xu, Xin Jia, Tingwen Xing
  • DETECTION DEVICE FOR DETECTING LENS SURFACE IN STITCHING INTERFEROMETER
    Publication number: 20210381827
    Abstract: A detection device adapted to detect lens surface and a stitching interferometer including the same are disclosed.
    Type: Application
    Filed: March 5, 2019
    Publication date: December 9, 2021
    Inventors: Dachun GAN, Fuchao XU, Xin JIA, Tingwen XING
  • STITCHING-MEASUREMENT DEVICE AND STITCHING-MEASUREMENT METHOD
    Publication number: 20210278201
    Abstract: Disclosed is a stitching-measurement device adapted for performing stitching-measurement on a surface of a concave spherical lens, including: an interferometer, a reference lens, a first plane mirror, a second plane mirror, a first adjustment mechanism, a second adjustment mechanism, a concave spherical object to be measured, a motion table and a control mechanism, the first plane mirror being mounted on the first adjustment mechanism configured to change a position of the first plane mirror; the second plane mirror being mounted on the second adjustment mechanism configured to change a position of the second plane mirror; the concave spherical object to be measured being placed on the motion table configured to change a position of the concave spherical object to be measured; the control mechanism communicating with the interferometer, the first adjustment mechanism, the second adjustment mechanism, and the motion table for issuing control signals, wherein by the first adjustment mechanism and the second adj
    Type: Application
    Filed: December 5, 2018
    Publication date: September 9, 2021
    Inventors: Fuchao XU, Xin JIA, Dachun GAN, Tingwen XING