| abstract |
The visible light transmittance converted to a thickness of 0.8 mm is 85% or more, the haze value converted to a thickness of 0.8 mm is 1.0% or less, and SiO 2 is represented by mass% on an oxide basis. 58 to 70%, the Al 2 O 3 15~30%, 2~10 % of Li 2 O, 0 to 5% of Na 2 O, 0 to 2% of K 2 O, SrO and 0 to 1.8% , BaO 0 to 2%, SnO 2 0.5 to 6%, ZrO 2 0.5 to 6%, P 2 O 5 0 to 6%, and the total content of SrO and BaO is 0. Crystallized glass having a content of 1 to 3% and a total content of Na 2 O and K 2 O of 1 to 5%. |