Inventors:
Edward Nashed Boulos - Troy MI
James Victor Jones - Nashville TN
Assignee:
Visteon Global Technologies, Inc. - Dearborn MI
International Classification:
C03C 3087
Abstract:
The present invention is a blue soda-lime-silica glass composition. The composition comprises 68 to 75% SiO , 10 to 18% Na O, 5 to 15% CaO, 0 to 10% MgO, 0 to 5% Al O , and 0 to 5% K O, where CaO+MgO is 6 to 15% and Na O+K O is 10 to 20%, and colorants comprising: 0. 3 to 0. 8 wt. % total iron oxide as Fe O wherein the ratio of FeO/total Fe as Fe O is 0. 35 to 0. 62; 0. 05 to 0. 5 wt. % manganese compound as MnO , 0 to 0. 30 wt. % titanium oxide as TiO ; and 0 to 0. 8 wt. % cerium oxide as CeO. The colored glass has the following spectral properties at 4. 0 mm. thickness: 65 to 81% light transmittance using Illuminant A (LTA) and using Illuminant C has a dominant wavelength of 488 to 494 nanometers with an excitation purity of 4 to 11%.