发明名称 |
OPTICAL DISTANCE-MEASURING METHOD AND APPARATUS THEREFOR |
摘要 |
An optical distance-measuring method comprises receiving a modulated light from a light-emitting source at a light-receiving source by reflecting the light from a point whose distance is being measured, and measuring the distance to the point from the phase difference between a modulating signal of the light-emitting source and a received signal from the light-receiving source. A leakage signal is measured by interrupting the normal optical path from the light-emitting source to the light-receiving source. A distance-measuring signal is measured without interrupting the normal optical path. The distance to the point is measured by correcting the distance-measuring signal according to the result obtained from measuring the leakage signal. |
申请公布号 |
DE3380187(D1) |
申请公布日期 |
1989.08.17 |
申请号 |
DE19833380187 |
申请日期 |
1983.04.07 |
申请人 |
TOKYO KOGAKU KIKAI KABUSHIKI KAISHA |
发明人 |
OHTOMO, FUMIO TOKYO KOGAKU KIKAI K.K. |
分类号 |
G01S7/48;G01S7/497;G01S17/08;G01S17/36;(IPC1-7):G01S7/48 |
主分类号 |
G01S7/48 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|