Patent ID: 6229651
Filing Date: 2001-05-08
Classification: G02B

Abstract:
Optical element, comprising:a base body having a surface,an optically effective first layer system of which at least one layer system surface is on the base body,a second optically effective layer system embedded in the base body that terminates in an intersection area with a broad surface of the second optically effective layer system extending along said surface of the base body,at least the second optically effective system comprising a sequence of optically high and low refraction layers, the high refraction layer consisting predominantly of at least one of the materials:TiO.sub.2, Ta.sub.2 O.sub.5, Nb.sub.2 O.sub.5, HfO.sub.2, ZrO.sub.2, SiO.sub.x N.sub.y,and the low refraction layer consisting predominantly of at least one of the materials:SiO.sub.2, Al.sub.2 O.sub.3, SiO.sub.x N.sub.y,a packing density of the layers of the second optically effective layer system being at least 0.95 and the second layer system being recessed in the intersection area at most by 5 .mu.m.