| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser processing head capable of eccentrically rotating a laser beam by deflecting and decentering the axis of laser beam at a position, in which the laser beam emitted from an optical fiber is made parallel.SOLUTION: A laser processing head comprises: a collimation lens 39 for making parallel a laser beam LB emitted from the emission end of an optical fiber 35; a capacitor lens 47 for condensing the parallel laser beam LB onto a work W; a wedged glass 75 made rotatable and having a wedge in one face thereof between the collimation lens 39 and the capacitor lens 47; and a support arm 71 enabling its leading end side to go into and come out of the optical passage of the laser beam LB. A glass holder 73 is rotatably mounted on the leading end side of that support arm 71 and is equipped with the aforementioned wedged glass 75. |
