Coated ultraviolet absorbing glass

Details Coated ultraviolet absorbing glass Coated ultraviolet absorbing glass

B - Operations, Transporting

32

B

B32B 17/06 (2006.01) C03C 3/11 (2006.01) C03C 4/08 (2006.01) C03C 4/10 (2006.01) C03C 14/00 (2006.01) C03C 17/34 (2006.01)

Patent

CA 2341413

This article is a glass substrate having a coating thereon. The coating strongly absorbs certain ultraviolet radiation. The preferred coating absorbs ultraviolet radiation at wavelengths ranging from 230 up to at least 280 nm while providing high transmission throughout a region of visible wavelengths. The preferred coating consists essentially of three layers, wherein the first layer adjacent the substrate is a mixture of SiO2 and TiO2; the second layer is TiO2 and the third layer farthest from the substrate is SiO2.

L'invention porte sur un susbtrat en verre pourvu d'un revêtement. Ce revêtement absorbe fortement certains rayonnements ultraviolets. Le revêtement préféré absorbe les rayonnements ultraviolets à des longueurs d'ondes comprises entre 230 et au moins 280 nm et assure une vitesse de transmission élevée dans une région de longueurs d'ondes visibles. Le revêtement préféré est constitué principalement de trois couches, la première couche adjacente au substrat étant un mélange de SiO¿2? et de TiO¿2?, la deuxième couche étant TiO¿2? et la troisième la plus éloignée du substrat, SiO¿2?.

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