Patent ID: 8597281
Filing Date: 2013-12-03
Classification: A61F,B23K

Abstract:
1. A method of producing cuts in a transparent material, comprising: generating optical breakthroughs in the material by application of laser radiation focused into the material at a focal point; the laser radiation passing through the surface of the material without injuring the surface of the material and the optical breakthroughs being formed within the material proximate the focal point; shifting the focal point three dimensionally within the material so as to form the cut by a surface lattice-type array of sequentially arranged optical breakthroughs; shifting the focal point along a three dimensional path within the material such that adjacent optical breakthroughs are not generated immediately following each other along said path; and wherein the surface lattice-type array of the optical breakthroughs is made up of at least two partial lattices including at least a first partial lattice and a second partial lattice, which are processed one after another, with respect to their associated optical breakthroughs; and wherein there is a gap between sequentially generated optical breakthroughs of each partial lattice, the gap being such that plasma bubbles generated in the material by sequential optical breakthroughs of each partial lattice do not merge and wherein plasma bubbles of the first partial lattice are adjacent plasma bubbles of the second partial lattice.