摘要:
An improved eye safety protection system for laser systems. The present invention measures energy returned along the optical axis itself. A beam splitter is installed in the optical axis and intercepts reflected energy back along the optical axis and passes the reflected energy to a photodetector which is used to measure the light scattered or reflected back along the emitting axis from the beam splitter. The output from the detector is passed to a comparator and regulation unit which adjusts the power level in the primary energy beam. Outgoing power can also be monitored.