Method of ablating an opening in a hard, non-metallic substrate

Electric heating – Metal heating – By arc

Reexamination Certificate

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C219S121700

Reexamination Certificate

active

06864460

ABSTRACT:
A method of ablating a hole into a hard, non-metallic substrate is disclosed. At least on laser assembly capable of generating a laser beam in an axis having a focus that is moveable relative to said axis is provided. A focus of the laser beam is positioned adjacent at least one surface of the substrate. A first layer of the substrate is ablated by the laser beam. The focus is moved relative to the axis corresponding to the depth of the substrate thereby enabling ablation of successive layers of the substrate. Successive layers of the substrate are ablated to generate a hole into the substrate.

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