Patents by Inventor Xizheng Liu

Xizheng Liu 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).

  • Heterodyne laser interferometer based on integrated dual polarization beam-splitting assembly and measurement method thereof
    Patent number: 12287198
    Abstract: A heterodyne laser interferometer and a measurement method based on an integrated dual polarization beam-splitting assembly is provided. Technical points: The first polarization beam splitter and the second polarization beam splitter of the integrated dual polarization beam-splitting assembly are arranged in parallel. The first polarization beam splitter is attached with a first polarizer, a third polarizer, and a first quarter-wave plate; The second polarization beam splitter is attached with a second polarizer, a fourth polarizer, and a second quarter-wave plate; The output optical path of the first quarter-wave plate and the second quarter-wave plate is equipped with target mirrors, while the output optical path of the third quarter-wave plate and the fourth quarter-wave plate is equipped with photodetectors. The assembly and adjustment of the present invention is more flexible and reduce the processing difficulty and processing error.
    Type: Grant
    Filed: March 4, 2024
    Date of Patent: April 29, 2025
    Assignee: HARBIN INSTITUTE OF TECHNOLOGY
    Inventors: Haijin Fu, Xiaobo Su, Liang Yu, Pengcheng Hu, Xizheng Liu, Xin Yang