OPTICAL ARTICLE COATED WITH AN UNDERLAYER AND WITH A TEMPERATURE-RESISTANT MULTI-LAYER ANTI-REFLECTION COATING, AND MANUFACTURING METHOD

The invention relates to an optical article having anti-reflection properties which is optionally antistatic and which possesses high heat resistance and high abrasion resistance, and to the method of manufacturing it. The article of the invention comprises a substrate and, from the substrate up: -...

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Bibliographic Details
Main Authors SIRJEAN JEAN-LOUIS, THOMAS MICHELE, BEINAT OLIVIER
Format Patent
LanguageChinese
English
Published 01.10.2014
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:The invention relates to an optical article having anti-reflection properties which is optionally antistatic and which possesses high heat resistance and high abrasion resistance, and to the method of manufacturing it. The article of the invention comprises a substrate and, from the substrate up: - an underlayer comprising an SiO2-based layer, said SiO2-based layer having a thickness of greater than or equal to 75 nm and being free of Al2O3; and - a multi-layer anti-reflection coating comprising a stack of at least one high-refractive-index layer and at least one low-refractive-index layer, of which all of the low-refractive-index layers comprise a mixture of SiO2 and Al2O3, and of which the high-refractive-index layers are not layers which absorb within the visible region, comprising a substoichiometric titanium oxide, and reducing the relative transmittance factor in the visible region (Tv) of the optical article by at least 10% relative to the same article not containing said layers which absorb within the
Bibliography:Application Number: CN201410352507