| 摘要 |
PURPOSE:To obtain a high output laser beam at need without specially providing a high output laser beam oscillator for vacuum wall, etc., having low oscillating probability. CONSTITUTION:Beam paths of the laser beams generated from at least two sets of the laser beam oscillators 31a, 31b for executing welding/cutting work to a specified position are respectively changed over by beam path change-over devices 34a, 34b, and the laser beam polarized by each beam path change-over device is reflected to the same direction by a laser beam synthesizing device 38a to synthesize the plural laser beams as a parallel laser beam flux. |
