公开(公告)号：US10261181B2

公开(公告)日：2019-04-16

申请号：US15627935

申请日：2017-06-20

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Te-Yuan Chung ,  Ruoh-Rou Chang ,  Shih-Che Chien ,  Yu-Sung Hsiao

IPC: G01S17/02 ,  G01J4/00 ,  G01N21/21 ,  G01S7/499

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.