Optoelectronic arrangement feeds at least some of light reflected back from outlet window to receiver element whose resulting signal forms deflection synchronizing signal

摘要

The arrangement has a light beam transmitter and receiver and a deflection unit with which the transmitted light beam (3) is periodically passed within the detection area via an outlet window (16). At least some of the light reflected back from the outlet window is fed to a receiver element (17), whereby the resulting signal generated at the output of the receiver element forms the synchronizing signal.