| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a laser beam machining head capable of preventing the contamination of an optical system by a spatter having a large momentum. SOLUTION: On the side of an optical path of a laser beam converged by a lens, at least two of nozzle bases 15A, 15B, 15C are disposed. The two nozzle bases are disposed at the positions different from each other with respect to the optical axis of the converged laser beam 10. Each of the nozzle bases is provided with slitlike nozzles 16A, 16B, 16C blowing a gas toward the optical path of the laser beam. The two nozzles are disposed in parallel with each other.</p> |
