Patents by Inventor Zichao LIN

Zichao LIN 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).

  • System for precision displacement measurement based on self-traceable grating interference
    Patent number: 11802758
    Abstract: A system for precision displacement measurement based on a self-traceable grating interference includes a coherent light source, a photoelectric detection module, a self-traceable grating and a signal processing module. The self-traceable grating is arranged on a to-be-measured displacement motion platform. The coherent light source, the photoelectric detection module and the signal processing module are sequentially connected. Laser generated by the coherent light source propagates through the photoelectric detection module and is incident on the self-traceable grating, diffracts with the self-traceable grating, returns to the photoelectric detection module to continue propagating and enters the signal processing module. The signal processing module collects an interference signal to obtain a motion displacement and a motion direction.
    Type: Grant
    Filed: January 27, 2022
    Date of Patent: October 31, 2023
    Assignee: Tongji University
    Inventors: Xiao Deng, Xinbin Cheng, Zichao Lin, Zhenjie Gu, Yulin Yao, Tongbao Li
  • SYSTEM FOR PRECISION DISPLACEMENT MEASUREMENT BASED ON SELF-TRACEABLE GRATING INTERFERENCE
    Publication number: 20230042098
    Abstract: A system for precision displacement measurement based on a self-traceable grating interference includes a coherent light source, a photoelectric detection module, a self-traceable grating and a signal processing module. The self-traceable grating is arranged on a to-be-measured displacement motion platform. The coherent light source, the photoelectric detection module and the signal processing module are sequentially connected. Laser generated by the coherent light source propagates through the photoelectric detection module and is incident on the self-traceable grating, diffracts with the self-traceable grating, returns to the photoelectric detection module to continue propagating and enters the signal processing module. The signal processing module collects an interference signal to obtain a motion displacement and a motion direction.
    Type: Application
    Filed: January 27, 2022
    Publication date: February 9, 2023
    Inventors: Xiao DENG, Xinbin CHENG, Zichao LIN, Zhenjie GU, Yulin YAO, Tongbao LI