Patent ID: 8648433

Claim:
A method for producing an oblique surface in a substrate, comprising: providing a substrate having a first main surface, a second main surface situated opposite the first main surface, and a thickness; forming a first recess in a region of a first surface on the first main surface, to a first depth in the substrate; forming a second recess in a region of a second surface of the second main surface to a second depth in the substrate, the second surface being laterally displaced relative to the first main surface, and a sum of the first depth and the second depth being greater than the thickness of the substrate; applying a first flexible diaphragm on the first main surface over the first recess; applying a second flexible diaphragm on the second main surface over the second recess; and producing a vacuum pressure inside the first recess and the second recess until the first flexible diaphragm and the second flexible diaphragm contact one another with their surfaces respectively facing the substrate.