Vapour-deposition material for the production of optical layers of high refractive index
AssigneeMerck Patent GmbH
InventorsMartin Friz, Reiner Dombrowski, Uwe Anthes
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Abstract
The invention relates to a vapour-deposition material for the production of optical layers of high refractive index which comprises titanium oxide and ytterbium oxide in a molar ratio of from 4:1 to 1:4, to a process for the preparation thereof, and to the use thereof.
Claims23
Vapour-deposition material for the production of optical layers of high refractive index, consisting of titanium oxide and ytterbium oxide in a molar ratio of 4:1 to 1:4, and gadolinium oxide and/or dysprosium oxide and optionally titanium in said vapour-deposition material.
Vapour-deposition material for the production of optical layers of high refractive index, consisting of 67 to 76 parts by weight of ytterbium oxide, 15 to 27 parts by weight of titanium dioxide and 2 to 5 parts by weight of titanium, based on the total weight of ytterbium oxide, titanium dioxide and titanium in the mixture.
Optical layer of high refractive index, comprising a vapour-deposition material, which comprises titanium oxide and ytterbium oxide in a molar ratio of 4:1 to 1:4 and has a refractive index of n≧2.0 said optical layer having been deposited and being on a substrate as a coating, wherein the substrate is glass or plastic and/or is an optical lens, spectacle lens or camera lens.
Dependencies are inferred from the claim text.