| 摘要 |
PROBLEM TO BE SOLVED: To obtain the sufficient color temperature and high brightness even when the glass is colored for preventing the halation by specifying the light transmittance at specific wavelength, of the glass including a specific compound. SOLUTION: This front glass substrate is made of SiO2-Al2O3-RO-R2O glass (RO is MgO, CaO, SrO or BaO, and R2O is Li2O, Na2O or K2O), and the light transmittance at wavelength 460 mm is T%460, and the light transmittance at wavelength 620 mm is T%620. Here, the relationships of T%460>=85, and T%460-T%620>=5 are satisfied, a content of CoO is 20-100 ppm, and a content of NiO is 0-less than 10 ppm. The SiO2-Al2O3-RO-R2O glass includes 50-70 wt.% of SiO2, 0.5-15 wt.% of Al2O3, 10-27 wt.% of MgO+CaO+SrO+BaO, 7-15 wt.% of LiO2+Na2O+K2O, 0-10 wt.% of ZrO2, or the like.
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