Apparatus and method for start of scan detection

摘要

A method of determining a start of scan time in a laser scanning system utilizing a scanning reflector, comprising: directing a laser beam toward the scanning reflector so as to be reflected by the scanning reflector; returning the laser beam reflected from the scanning reflector toward the scanning reflector for at least one additional reflection from the scanning reflector; detecting the laser beam reflected at least twice from the scanning reflector; and controlling the start of scan of the scanning system, responsive to the detection of the laser beam.