| 摘要 |
<p>A high transmission flat glass, which has a chemical composition, wherein the glass contains, as coloring components, in wt %, 0.005 % or more and less than 0.02 % of total iron oxides in terms of Fe2O3, less than 0.008 % of FeO and 0 to 0.25 % of cerium oxides, and the proportion of FeO in terms of Fe2O3 to total iron oxide is 40 % or less, and exhibits a high transmittance for visible lights and solar radiation rays; or a high transmission flat glass, which comprises 0.06 % or less of total iron oxides and 0.025 to 0.20 % of cerium oxide, and exhibits, when irradiated with an ultraviolet ray having a wavelength of 335 nm, a ratio of a fluorescent strength at 395 nm to that at 600 nm of 10 % or more.</p> |
