VAPOUR-DEPOSITION MATERIAL FOR THE PRODUCTION OF HIGH-REFRACTIVE-INDEX OPTICAL LAYERS, AND PROCESS FOR THE PRODUCTION OF THE VAPOUR-DEPOSITION MATERIAL

摘要

A vapour-deposition material for the production of high-refractive-index optical layers of titanium oxide, titanium and lanthanum oxide under reduced pressure consists of a sintered mixture having the composition TiOx + z * La2O3, where x = 1.5 to 1.8 and z = 10 to 65% by weight, based on the total weight of the mixture. The constituents of the mixture are in the range from 19 to 65% by weight of lanthanum oxide, from 38 to 74% by weight of titanium oxide and from 2 to 7% by weight of titanium.