Optical article comprising a light absorbing compound and a corresponding manufacturing method
AssigneeEssilor International
InventorsXingzhao Ding, Yu Richard Liu
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Abstract
This optical article comprises a base material having at least one face coated with an interferential multilayer coating providing either antireflective or high reflective properties. The coating comprises at least one layer of light absorbing material which has an adjustable composition and thickness, such that the visible light mean transmission factor of the coating is controllable to have a value between 95% and 5%.
Claims15
An optical article comprising a base material having at least one face coated with an interferential multilayer coating providing either antireflective or high reflective properties, wherein said coating comprises at least one layer of light absorbing material which has an adjustable composition and thickness, such that the visible light mean transmission factor of said coating is controllable to have a value between 95% and 5%;
- wherein the adjustable composition comprises SiNx, where x is adjustable and is less than or equal to 1;
- or
- wherein the adjustable composition comprises SiOx, where x is adjustable and is less than or equal to 2;
- and
- wherein the adjustable composition of the at least one layer of light absorbing material is deposited from a material comprising N2 and Ar or O2 and Ar, wherein an adjustable N2/Ar ratio or O2/Ar ratio is correlated with the controllable visible light mean transmission factor.
Dependencies are inferred from the claim text.