| 摘要 |
<p>A method of laser processing wherein a processing head (15) is moved and a system therefor which have such an arrangement that, even if an optical path length from a laser oscillator (1) to a processing point (laser head) is varied due to the movement of the processing head (15), the laser processing can be suitably performed. A condensing optical part (2) consisting of lenses and the like is inserted into an optical path. The condensing optical part (2) is displaced, so that an article to be processed (14) can be positioned within a region for processing in which, the article to be processed (14) can be suitably processed in accordance with an optical path length from the laser oscillator to the processing head (15) during the processing. That is, a beam diameter of a laser ray (3) is reduced by the displaced condensing optical part (2), so that the characteristics of propagation thereof can match the variable optical path length. With such an arrangement, a value of displacement of the condensing optical part (2) is limited, so that a laser processing machine compact in size can be obtained.</p> |
