| 摘要 |
PURPOSE:To execute marking by the laser beam without reducing the work distance. CONSTITUTION:In a laser beam marking equipment where a mask 13 on which the prescribed pattern 12 is formed is irradiated with the laser beam outputted from a laser beam oscillator 11, and marking is executed by image-forming the laser beam transmitted from the pattern on a work by means of an image- forming lens 15, an optical element 14 which is formed of a material capable of transmitting the laser beam and is arranged on the outgoing side of the mask of the optical path of the laser beam with forming a plane by the incident and the outgoing planes, and a driving means 16 to sway this optical element at the prescribed angle of rotation are provided. This optical means refracts the laser beam according to the swaying angle. |
