Low solar absorbing blue glass, solar reflecting coated blue glass, and insulating unit having a low solar heat gain
First Claim
1. A coated glass article comprising, a glass substrate and a coating over a major surface of the glass substrate, the glass substrate comprising a base glass portion and a glass colorant portion, the glass colorant portion having colorants in selected amounts to provide the glass substrate with chromaticity coordinates of a* in the range of −
- 3.5 to +2.5 and b* in the range of −
1 to −
15, and a visible light transmittance of 40 to 80% at a reference thickness of 0.223 inches (5.66 mm), and the coated glass article has a hemispherical emissivity of no greater than 0.25.
4 Assignments
0 Petitions
Accused Products
Abstract
An insulating unit having a neutral grey color and a solar heat gain coefficient less than 0.40 includes a clear glass sheet spaced from a coated glass sheet. The coated glass sheet includes a colored glass substrate having a solar infrared reflective coating. The composition of the coated substrate includes a base glass portion and a glass colorant portion, the glass colorant portion including total iron in the range of 0.04 to less than 0.28 weight percent; CoO in the range of 32 to 90 parts per million, and Se in the range of greater than 0 to less than 5.5 parts per million. In one non-limiting embodiment of the invention the glass substrate at a thickness of 0.223 inches has a* chromaticity coordinates of −3.5 to +2.5 and b* chromaticity coordinates of −1 to −15, and a visible light transmittance of 40 to 80%.
9 Citations
20 Claims
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1. A coated glass article comprising, a glass substrate and a coating over a major surface of the glass substrate, the glass substrate comprising a base glass portion and a glass colorant portion, the glass colorant portion having colorants in selected amounts to provide the glass substrate with chromaticity coordinates of a* in the range of −
- 3.5 to +2.5 and b* in the range of −
1 to −
15, and a visible light transmittance of 40 to 80% at a reference thickness of 0.223 inches (5.66 mm), and the coated glass article has a hemispherical emissivity of no greater than 0.25. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
- 3.5 to +2.5 and b* in the range of −
-
19. In an insulating unit of the type having a coated first glass sheet spaced a second glass sheet, with edges of the glass sheets sealed to provide a sealed space between the first and the second glass sheets, wherein the improvement comprises:
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the coated glass sheet comprises a glass substrate comprising a base glass portion and a glass colorant portion, the glass colorant portion having colorants in selected amounts to provide the glass substrate with chromaticity coordinates of a* in the range of −
3.5 to +2.5 and b* in the range of −
1 to −
15, and a visible light transmittance of 40 to 80% at a reference thickness of 0.223 inches (5.66 mm); andthe coated glass sheet has chromaticity coordinates of a* in the range of −
7 to +2.0 and b* in the range of 3 to −
13, and a visible light transmittance of in the range of 26 to 75% at a reference thickness of 0.223 inches (5.66 mm), and a hemispherical emissivity of no greater than 0.25. - View Dependent Claims (20)
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Specification