Glazing assembly comprising a substrate provided with a stack of thin layers for solar protection and/or thermal insulation
First Claim
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1. Glazing assembly comprising at least one transparent substrate (1) provided with a stack of thin "A" layers consisting essentially of, in succession:
- a) a first coating (2) of dielectric material;
b) a first `functional` metallic layer (3) having reflection properties in the infrared region;
c) a second coating (5) of dielectric material;
d) a second `functional` metallic layer (6) having reflection properties in the infrared region; and
e) a third coating (8) of dielectric material;
whereinf) the sum of the thicknesses of the first and second functional layers (3,
6) is greater than or equal to 25 nm and;
g) the ratio of the thickness of the first functional layer (3) to the thickness of the second functional layer (6) is less than 0.55, so that the glazing assembly has a solar factor SF of less than or equal to 32% and a colorimetry in external reflection corresponding to negative a* and b* values of less than 4, in absolute values.
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Abstract
The subject of the invention is a glazing assembly comprising at lest one transparent substrate provided with a stack of thin "A" layers composed in succession of a first coating of dielectric material, a first "functional" layer having reflection properties in the infrared, in particular a metallic layer, and a third coating of dielectric material. The sum of the thicknesses of the first and second functional layers is greater than or equal to 25 nm. The ratio of the thickness of the first functional layer to the thickness of the second functional layer is less than 0.55.
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26 Claims
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1. Glazing assembly comprising at least one transparent substrate (1) provided with a stack of thin "A" layers consisting essentially of, in succession:
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a) a first coating (2) of dielectric material; b) a first `functional` metallic layer (3) having reflection properties in the infrared region; c) a second coating (5) of dielectric material; d) a second `functional` metallic layer (6) having reflection properties in the infrared region; and e) a third coating (8) of dielectric material;
whereinf) the sum of the thicknesses of the first and second functional layers (3,
6) is greater than or equal to 25 nm and;g) the ratio of the thickness of the first functional layer (3) to the thickness of the second functional layer (6) is less than 0.55, so that the glazing assembly has a solar factor SF of less than or equal to 32% and a colorimetry in external reflection corresponding to negative a* and b* values of less than 4, in absolute values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification