Patent ID: 9126859
Filing Date: 2015-09-08
Classification: C03B,C03C,G02B

Abstract:
1. A Li 2 O—Al 2 O 3 —SiO 2 -based crystallized glass, comprising, as a composition in terms of mass %, 55 to 75% of SiO 2 , 20.5 to 27% of Al 2 O 3 , 2 to 4% of Li 2 O, 1.5 to 3% of TiO 2 , 3.8 to 5% of TiO 2 +ZrO 2 , 0 to 2% of Na 2 O+K 2 O+BaO, and 0.1 to 0.5% of SnO 2 , and satisfying the relationships of 3.7≦Li 2 O+0.741MgO+0.367ZnO≦4.5 and SrO+1.847CaO≦0.5, wherein the Li