LOW INDEX OF REFRACTION THIN FILM WITH HIGH HARDNESS COATING AND METHOD AND APPARATUS TO PRODUCE SAME

• Main Authors: NOLAN, Thomas P, DEMTCHOUK, Alexander Vassilievich, CHOI, Jae Ha, HARKNESS, IV
• Format: Patent
• Language: English; French
• Published: 08.08.2024
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; GLASS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

A coated article comprising: a transparent substrate and a protective coating comprising: an adhesion layer formed over the substrate; a protective layer formed over the adhesion layer and may have refractive index of from 1.6 to 1.8; and an anti-reflective layer formed over the protective layer, the anti-reflective layer comprises a plurality of sublayers, wherein at least one sublayer has a refractive index higher than index of said protective layer and at least one sublayer has a refractive index lower than the index of said protective layer. Article revêtu comprenant : un substrat transparent et un revêtement protecteur comprenant : une couche d'adhésion constituée sur le substrat ; une couche de protection constituée sur la couche d'adhésion et pouvant avoir un indice de réfraction de 1,6 à 1,8 ; et une couche antireflet constituée sur la couche de protection, la couche antireflet comprenant une pluralité de sous-couches, au moins une sous-couche présentant un indice de réfraction supérieur à l'indice de ladite couche de protection et au moins une sous-couche présentant un indice de réfraction inférieur à l'indice de ladite couche de protection.