| 摘要 |
<p>The system feeds a laser beam (2) via an optical fiber (3) to a laser machining head (9) that focuses the beam onto the workpiece (12). The method involves measuring the power of the beam before entering the fiber and after exiting the fiber to produce first and second measurement signals (M1,M2), forming the quotient of the second to first signal and comparing the quotient with a predefined threshold value. AN Independent claim is also included for the following: a laser processing system.</p> |
