Patent ID: 8553735
Filing Date: 2013-10-08
Classification: A61F,B23K

Abstract:
1. A device for material processing by means of laser radiation, said device comprising a source of laser radiation emitting pulsed laser radiation for interaction with the material; optics focusing the pulsed processing laser radiation to a center of interaction in the material; a scanning unit shifting the position of the center of interaction within the material, wherein each processing laser pulse interacts with the material in a zone surrounding the center of interaction assigned to said laser pulse so that material is separated in the zones of interaction; and a control unit which controls the scanning unit and the source of laser radiation such that a cut surface is produced in the material by a plurality of zones of interaction, wherein the control unit controls the source of laser radiation and the scanning unit such that merely a perforation of the material is generated in the cut surface, whereby not all of the zones of interaction located within the cut surface adjoin or overlap each other, so that material bridges, in which the material remains connected, remain between regions in which the material is being separated.