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    • 4. 发明专利
    • Laser processing head
    • JP4220707B2
    • 2009-02-04
    • JP2002050111
    • 2002-02-26
    • 浜松ホトニクス株式会社
    • 松本  聡良雄 磯部
    • B23K26/06G02B13/00B23K26/00
    • PROBLEM TO BE SOLVED: To provide a laser machining head capable of measuring the temperature of a machining section without the need for the adjustment of a light receiving lens, even if a protrusion and a recess are formed on/in a workpiece. SOLUTION: The laser machining head 110 is provided with a projection lens 120, a dichroic mirror 125 and a condenser lens 130. The projection lens 120 condenses laser beams from a laser diode 160. The dichroic mirror 125 reflects the condensed laser beams, which irradiate the workpiece 10. The beam receiving lens 130 receives radiant beams emitted from a machining section. The radiant beams are made incident on an optical fiber 152 at a radiant light emitting port 118 arranged at the optical axis 192 and are transmitted to a radiation thermometer 170, enabling the temperature of the machining section to be measured. Even when the irradiation angle of the laser beam or the height of the machining section changes, the radiant beams are received along the optical axis 192 all the time, which eliminates the need for the adjustment of the direction and the position of the receiving lens. COPYRIGHT: (C)2003,JPO