公开(公告)号：EP4286347A1

公开(公告)日：2023-12-06

申请号：EP22745936.9

申请日：2022-01-26

申请人： ISUZU GLASS LTD.

发明人： YAMAGURO, Takao ,  SUETSUGU, Tatsuya ,  HAJIRI, Yoshitaka

IPC分类号： C03C3/091 ,  C03B32/00 ,  C03C3/064 ,  C03C3/089

摘要： An object of the present invention is to provide an opal glass through which uniform diffused light can be obtained. Specifically, the present invention provides a phase-separated opal glass comprising, in terms of molar concentration (%) on an oxide basis, 15 to 82% of SiO 2 , 12 to 75% of B 2 O 3 , 0 to 7% of Al 2 O 3 , and 4 to 20% of Li 2 O and/or 1 to 14% of Na 2 O, a dispersed phase present in the phase-separated opal glass having an average particle size of 0.5 to 2 µm.