Monitoring temp. at focal point of a laser beam - which ensure optimal radiation during work process by controlling laser beam powder in response to temp. measured

摘要

During laser beam working, the temp. at the laser beam impact point and/or surrounding area is monitored and a signal sent to the laser beam prodn. unit to control the output in response to the measured value. The measuring device used works either according to the thermography principle, or the direct measuring principle using a probe, esp. a fibre optic probe, or is a radiation thermometer, a calibrated thermal imaging system. USE/ADVANTAGE - In laser working of material or in medical fields. Ensures an optimal amount of laser beam radiation is used.