| 摘要 |
<p>PROBLEM TO BE SOLVED: To save space by decreasing the number of elements for time division of a laser beam and sharing a part of optical parts after the time division. SOLUTION: The deflection directions of laser beams time-divided (42 and 44) are set different from each other, returned onto the same optical axis and separated according to the deflection directions in the vicinity of machining heads 30A and 30B, and the laser beams are used for the machining.</p> |
