Light barrier monitoring object detection optical sensor has transmitter and receiver with additional transmitter and receiver for second reflected light beam from object

摘要

A light barrier area monitoring object detection optical sensor has a transmitter (2) and receiver (7) with additional transmitter and receiver (8) to create a second reflected light beam (6) path when an object (12) enters the monitored zone so that the processor (4) can compare it with the beam from the reflector (13) .