Patent ID: 11906700
Assignee: SCHOTT AG
Field: Surface technology, coating (Chemistry)
Classification: CPC G  C  H | IPC C  G  H

Claim 14:
15. A coated glass ceramic substrate, comprising:
a substrate with a first side and a second side;
a multilayer antireflection coating on at least one of the first and/or second sides; and
a Haze value after a Bayer test that increases less than 2.5%,
wherein the multilayer antireflection coating comprises at least four successive layers and is composed of layers with different refractive indices,
wherein layers having a higher refractive index alternate with layers having a lower refractive index,
wherein the layers having the lower refractive index are formed of silicon oxide with a proportion of aluminum,
wherein the multilayer antireflection coating reduces reflectance of the coated glass ceramic substrate as compared to the substrate by more than 3% throughout an entirety of a wavelength range from 400 nm to at least 700 nm.