Patents by Inventor Xinglai Liu

Xinglai 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).

  • Photoelastic modulator having symmetric structure and forty-five degree double-drive photoelastic modulator
    Patent number: 10036903
    Abstract: The present invention relates to a Photoelastic Modulator (PEM), particularly to a novel polarized light modulator structure based on a photoelastic effect. The PEM, which controls driving voltages of two groups of piezoelectric actuators, is able to implement polarized light modulation having a relatively large optical path difference, and polarized light modulator having a fast modulation shaft moving circumferentially, and the PEM operates stably without a moving component. The present invention includes the piezoelectric actuators, a light pass crystal and a driver controller. Two light pass faces of the light pass crystal are parallel regular octagons directly facing each other, and identical rectangles are formed by side faces of the light pass crystal. The piezoelectric actuators are in soft connection with middle positions of the rectangles by connection rubber layers.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: July 31, 2018
    Assignee: North University of China
    Inventors: Zhibin Wang, Kewu Li, Rui Zhang, Youhua Chen, Yuanyuan Chen, Jinhua Li, Xinglai Liu, Changqing Yang
  • NOVEL PHOTOELASTIC MODULATOR HAVING SYMMETRIC STRUCTURE AND FORTY-FIVE DEGREE DOUBLE-DRIVE PHOTOELASTIC MODULATOR
    Publication number: 20170322432
    Abstract: The present invention relates to a Photoelastic Modulator (PEM), particularly to a novel polarized light modulator structure based on a photoelastic effect. The PEM, which controls driving voltages of two groups of piezoelectric actuators, is able to implement polarized light modulation having a relatively large optical path difference, and polarized light modulator having a fast modulation shaft moving circumferentially, and the PEM operates stably without a moving component. The present invention includes the piezoelectric actuators, a light pass crystal and a driver controller. Two light pass faces of the light pass crystal are parallel regular octagons directly facing each other, and identical rectangles are formed by side faces of the light pass crystal. The piezoelectric actuators are in soft connection with middle positions of the rectangles by connection rubber layers.
    Type: Application
    Filed: May 9, 2016
    Publication date: November 9, 2017
    Applicant: North University of China
    Inventors: Zhibin Wang, Kewu Li, Rui Zhang, Youhua Chen, Yuanyuan Chen, Jinhua Li, Xinglai Liu, Changqing Yang