公开(公告)号：EP0879396A4

公开(公告)日：2000-02-02

申请号：EP97906892

申请日：1997-02-03

申请人： VISIDYNE INC

发明人： ZEHNPFENNIG THEODORE F ,  WYNTJES GEERT

IPC分类号： G01B11/00 ,  G01B11/26 ,  G01S17/36 ,  G01S17/87 ,  G01S5/16 ,  G01C1/00 ,  G01C3/08

CPC分类号： G01S5/163 ,  G01S17/36 ,  G01S17/875

摘要： An optical measurement system includes: at least one optical beam transmitter (16); at least one optical beam detector (22) for receiving the optical beam from the transmitter; modulation means (42) for modulating the intensity of the transmitted optical beam; processor means (32) for detecting the fractional and integer phase difference between the intensity modulation of the transmitted beam and the beam received by the receiver; and a calculator device (38) for converting the integer and fractional phase difference into a distance between the transmitter and detector.