| 摘要 |
Device has transmitter, receiver and analysis unit for evaluation of the output signal from the receiver. Light beams (2) from the transmitter are deflected using a deflection unit (11) so that they are displaced relative to each other to form a number of separate scanning lines forming partial monitoring areas. When an object (8) enters a partial scanning area an object identification signal is generated with the individual signals combined into an output signal in the analysis unit (6). |
