LASER CUT COMPOSITE GLASS ARTICLE AND METHOD OF CUTTING

摘要

The present disclosure relates to a process for cutting and separating arbitrary shapes of thin substrates of transparent materials, particularly tailored composite fusion drawn glass sheets, and the disclosure also relates to a glass article prepared by the method. The developed laser method can be tailored for manual separation of the parts from the panel or full laser separation by thermally stressing the desired profile. The self-separation method involves the utilization of an ultra-short pulse laser that can be followed by a CO2 laser (coupled with high pressure air flow) for fully automated separation.

主权项

1. A method of laser processing a fusion formed glass composite workpiece, the method comprising:
focusing a pulsed laser beam into a laser beam focal line oriented along the beam propagation direction and directed into the fusion formed glass composite workpiece, the laser beam focal line generating an induced absorption within the workpiece, and the induced absorption producing a defect line along the laser beam focal line within the workpiece; and translating the workpiece and the laser beam relative to each other along a contour, thereby forming a plurality of defect lines within the workpiece, the defect lines being spaced apart by a distance between 0.5 micron and 20 microns.