| 摘要 |
<p>A laser beam (4) output from an LD (1) is transmitted over a fiber (2) and is output to an emission section (3). The laser beam (4) is converged, by a lens (5), to a beam spot substantially equal in size with the core diameter of the fiber (2), and the thus-converged laser beam is radiated onto a workpiece (7). An moving element (8) having an emission section (3) is moved under the control of an NC control circuit (15), thus making a mark on the surface of the workpiece (7) in accordance with the input instruction or marking pattern entered from external equipment (14). In the case of an increase in the temperature of the heat developing in the LD1, a Peltier control circuit (11) absorbs the heat of the LD1 through use of a Peltier element (10), and the thus-absorbed heat is radiated to the outside by way of the surface of a fin (16). <IMAGE></p> |
