METHOD OF MANUFACTURING A GEODESIC CONSTRUCTION ELEMENT AND OPTICAL INTEGRATED SYSTEM COMPRISING SUCH AN ELEMENT

摘要

The lens is made by forming aspherical, rotationally symmetrical depressions in the surface of a substrate. This surface is provided with a planar waveguide. The substrate has a number of cold Plasma-CVD applied layers exhibiting differing etching rates in a progressive sequence. The surface is masked and etched to form the depressions. The planar waveguide is applied after removal of the mask. Pref. the etching rate decreases with the increasing layer number.