Element comprising a transparent substrate and a multi-layer wear protection coating with adjusted reflectance

A transparent wear-resistant element, comprising:

• a substrate having a first surface and a second surface, wherein the substrate is transparent within a visible spectral range of wavelengths from 380 nm to 780 nm;
• a layer system comprising two successive layers that are in contact with one another and are deposited on the first surface of the substrate, the two successive layers including a first layer with a first refractive index (n1) and a second layer with a second refractive index (n2), the first refractive index (n1) is greater than the second refractive index (n2), the second refractive index (n2) is a value of at least 1.60, wherein the first and second refractive indices (n1−n2) have a difference of at least 0.05;
• and
• a reflectance at the second surface of at least 2% in the visible spectral range of wavelengths,
• wherein the first layer comprises a zirconium compound.

A transparent wear-resistant element, comprising:

• a substrate having a first surface and a second surface, wherein the substrate is transparent within a visible spectral range of wavelengths from 380 nm to 780 nm;
• a layer system comprising two successive layers that are in contact with one another and are deposited on the first surface of the substrate, the two successive layers including a first layer with a first refractive index (n1) and a second layer with a second refractive index (n2), the first refractive index (n1) is greater than the second refractive index (n2), the second refractive index (n2) is a value of at least 1.60, wherein the first and second refractive indices (n1−n2) have a difference of at least 0.05;
• and
• a reflectance at the second surface of at least 2% in the visible spectral range of wavelengths,
• wherein the layer system has a total thickness of at least 470 nm and less than 2 μm, and
• wherein the first layer is in contact with the substrate.