Glazing panel
AssigneeAsahi Glass Company, Limited
InventorsJunichi Ebisawa, Nobutaka Aomine, Satoshi Takeda, Kazuyoshi Noda, Daniel Decroupet
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Abstract
A glazing panel carrying a coating stack comprises in sequence at least: a glass substrate a base antireflective layer an infra-red reflecting layer, and a top antireflective layer in which at least one of the antireflective layers comprises at least one mixed nitride layer which is a mixture of Al and at least one additional material X, in which the atomic ratio X/Al is greater than or equal to 0.05 and in which X is one or more of the materials selected from the group comprising the elements of Groups 3a, 4a, 5a, 4b, 5b, 6b, 7b, 8 of the periodic table. The glazing panel is particularly suitable for heat treatment and incorporation in windscreens.
Claims16
A glazing panel carrying a coating stack comprising in sequence at least:
- a glass substrate
- a base antireflective layer
- an infra-red reflecting layer, and
- a top antireflective layer
- characterised in that at least one of the antireflective layers comprises at least one mixed nitride layer which is a mixture of Al and at least one additional material X, in which the atomic ratio X/Al is greater than or equal to 0.05 and in which X is one or more of the materials selected from the group comprising the elements of Groups 3a, 4a, 5a, 4b, 5b, 6b, 7b, 8 of the periodic table.
A method of manufacturing a glazing panel having a haze of less than about 0.5 comprising the step of subjecting a glazing panel in accordance with clain 1 to a heat treatment process of at least 570° C.
Dependencies are inferred from the claim text.