| 摘要 |
PURPOSE: To execute the ideal laser machining having no generation of taper or inclination to the inner face in simple way when through hole, notch, etc., are formed to a relatively thick work. CONSTITUTION: The device is provided with a laser oscillator 1 to generate laser beam, an objecting lens 4 of optical system to collect laser beam for a work 10 and a high reflection plate 41 arranged to the opposite face of laser beam irradiating face of work 10 and having high reflection characteristic for laser beam. By effectively using the laser beam reflected with the high reflection plate 41, the ideal laser machining, which has no taper and inclination to the inner face of through hole, notch, etc., is executed. |
