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AssigneeSchott AG
InventorsFriedrich SIEBERS, Ulrich SCHIFFNER, Wolfgang SCHMIDBAUER, Klaus SCHOENBERGER
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Transparent, dyed cook top or hob with improved color display capability, consisting of a glass ceramic with high quartz mixed crystals as predominant crystal phase, whereby the glass-ceramic contains none of the chemical refining agents arsenic oxide and/or antimony, with transmission values of greater than 0.1% in the range of the visible light within the entire wavelength range greater than 450 nm, a light transmission in the visible of 0.8-2.5% and a transmission in the infrared at 1600 nm of 45-85%.
Transparent, dyed cook top or hob with improved color display capability, consisting of a glass-ceramic comprising high quartz mixed crystals as predominant crystal phase whereby the glass ceramic, except of some unavoidable traces, contains none of the chemical refining agents arsenic oxide and/or antimony, characterized by transmission values of greater than 0.1% within the entire wavelength range of visible light larger than 450 nm, a light transmission in the visible from 0.8 to 2.5% and a transmission in the infrared at 1600 nm of 45-85%, and wherein the glass ceramic comprises Fe2O3 and V2O5, wherein the Fe2O3 content is at least as high as the V2O5 content and thus meet the condition
Transparent, dyed cook top or hob with improved color display capability, consisting of a glass-ceramic comprising high quartz mixed crystals as predominant crystal phase whereby the glass ceramic, except of some unavoidable traces, contains none of the chemical refining agents arsenic oxide and/or antimony, characterized by transmission values of greater than 0.1% within the entire wavelength range of visible light larger than 450 nm, a light transmission in the visible from 0.8 to 2.5% and a transmission in the infrared at 1600 nm of 45-85%, and wherein the glass ceramic comprises Fe2O3 and V2O5, wherein the Fe2O3 content is 0.08 to 0.15 weight %.
A transparent, dyed cook top or hob with improved color display capability, comprising a glass-ceramic which comprises high quartz mixed crystals as predominant crystal phase whereby the glass ceramic, except as impurities present in amounts less than 500 ppm, contains none of the chemical refining agents arsenic oxide and/or antimony, and whereby the glass ceramic is characterized by transmission values of
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