Laser module focusing piece and laser engraving device

The embodiment of the utility model provides a laser module focusing piece which comprises a base body contact surface and a focal length adjusting surface arranged opposite to the base body contact surface, and the focal length adjusting surface is a multi-step surface and comprises a plurality of...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	LIU HUILIN, CAO FAYANG, TANG ZHONGHUA
Format:	Patent
Sprache:	chi ; 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 PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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