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US 2019/0194062 A1Published application
Coloured stove sightglass with colour-neutral transmission characteristics
AssigneeSchott AG
InventorsMatthias WÖLFINGER, Falk GABEL, Friedrich SIEBERS, Evelin WEISS, Matthias BOCKMEYER, Oliver HOCHREIN
Life of this patent
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Abstract
A sightglass for a stove is provided that has a substrate made of transparent coloured lithium aluminium silicate glass ceramic. The sightglass has a light transmittance of 0.1% to 50%. Standard illuminant D65 light, after passing through the glass ceramic, at a thickness of 4 mm, has a colour locus in the white region W1 determined by the following coordinates in the chromaticity diagram CIExyY-2°: White region W1 x y 0.27 0.21 0.22 0.25 0.32 0.37 0.45 0.45 0.47 0.34 0.36 0.29.
Claims13
A sightglass for a stove, the sightglass comprising:
- a substrate made of transparent coloured lithium aluminium silicate glass ceramic, wherein the glass ceramic has a light transmittance of 0.1% to 50% and has a standard illuminant D65 light, after passing through the glass ceramic, at a thickness of 4 mm, with a colour locus in a white region W1 determined by coordinates in a chromaticity diagram CIExyY-2°:
- White region W1
- X
- y
- 0.27
- 0.21
- 0.22
- 0.25
- 0.32
- 0.37
- 0.45
- 0.45
- 0.47
- 0.34
- 0.36
- 0.29.
13 more elements
Dependencies are inferred from the claim text.