Opto-electronic sensor

摘要

The sensor has a light source (10) for emitting a guide beam (11). A light deflection unit (12) periodically deflects the guide beam within a transmission angle range (14). Light reflected or back-scattered from an object to be scanned is detected by a receiver. A diverter (18) has a light entrance surface (20) within the transmission angle for the purpose of deflecting the light falling on the entry surface on to a photodetector. The detector is coupled to a synchronizing circuit for generating a synchronization pulse at the start of a scanning period