OPTICAL SYSTEM, AND LASER PROCESSING DEVICE

PROBLEM TO BE SOLVED: To provide an optical system and a laser processing device capable of setting easily energy strength distribution of laser beam on a processed point, so that the energy strength distribution is higher on a peripheral area than on a center area.SOLUTION: An optical system 7 comp...

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Bibliographische Detailangaben
Hauptverfasser:	NISHITANI YUSUKE, WATANABE MASANARI
Format:	Patent
Sprache:	eng
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHYSICS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an optical system and a laser processing device capable of setting easily energy strength distribution of laser beam on a processed point, so that the energy strength distribution is higher on a peripheral area than on a center area.SOLUTION: An optical system 7 comprises: a collimator lens group 8 emitting laser beam having a parallel flux; an axicon lens 9 which is conical shape and to which the emitted beam from the collimator lens group 8 injects; and a focus lens group 10 condenses the emitted beam from the axicon lens 9. A conical face of the axicon lens 9 locates on the collimator lens group 8 side and a plane face of the axicon lens 9 locates on the focus lens group 10 side.