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US 11,448,902 B2Granted
Colored optical article with neutral transmitting coating having asymmetric reflectance
AssigneeEssilor International
InventorsMontserrat Burgos, Michèle Thomas, Xiaohong Zhang
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Abstract
The present invention relates to an optical article comprising: —a substrate, —one colouring component, so as to colour the substrate, and —coated on the substrate (a), an asymmetric interferential multilayer stack comprising at least one absorbing layer which absorbs in the visible region at a wavelength ranging from 380 to 780 nm.
Claims23
An optical article comprising:
- (a) a substrate,
- (b) one colouring component, so as to colour the substrate, and
- (c) coated on the substrate (a), an asymmetric interferential multilayer stack comprising an alternated stack comprising at least:
- one first layer further defined as an absorbing layer which absorbs in the visible region at a wavelength ranging from 380 to 780 nm, and
- one second layer comprising at least one dielectric material that is different from the absorbing layer and further defined as SiO2.
2 more elements
Dependencies are inferred from the claim text.