Patents by Inventor RUOH-ROU CHANG

RUOH-ROU CHANG 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).

  • Laser radar system capable of active polarization
    Patent number: 10261181
    Abstract: A laser radar system capable of active polarization comprises a signal processing unit for sending a control signal; a laser emitting unit for emitting a first laser to a target after receiving the control signal, wherein the laser emitting unit comprises a liquid crystal polarization driver and a liquid crystal polarization component group, and the liquid crystal polarization driver controls a phase delay of the liquid crystal polarization component group to therefore change a polarized state of the first laser; and a laser receiving unit for receiving a second laser reflected off the target and analyzing polarization information of the second laser through the signal processing unit to evaluate surface characteristics of the target.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: April 16, 2019
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Te-Yuan Chung, Ruoh-Rou Chang, Shih-Che Chien, Yu-Sung Hsiao
  • LASER RADAR SYSTEM CAPABLE OF ACTIVE POLARIZATION
    Publication number: 20180364354
    Abstract: A laser radar system capable of active polarization comprises a signal processing unit for sending a control signal; a laser emitting unit for emitting a first laser to a target after receiving the control signal, wherein the laser emitting unit comprises a liquid crystal polarization driver and a liquid crystal polarization component group, and the liquid crystal polarization driver controls a phase delay of the liquid crystal polarization component group to therefore change a polarized state of the first laser; and a laser receiving unit for receiving a second laser reflected off the target and analyzing polarization information of the second laser through the signal processing unit to evaluate surface characteristics of the target.
    Type: Application
    Filed: June 20, 2017
    Publication date: December 20, 2018
    Inventors: TE-YUAN CHUNG, RUOH-ROU CHANG, SHIH-CHE CHIEN, YU-SUNG HSIAO