Patent ID: 7758774
Filing Date: 2010-07-20
Classification: C03C,C09K

Abstract:
1. A luminescent glass obtained by a process comprising the steps of adsorbing, to a porous high silica glass, at least one metal component selected from the group consisting of Sc, Y, La, Pr, Nd, Pm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and elements of Groups IVA, VA, VIA, VIIA, VIII, IIB and IVB of the Periodic Table; and thereafter heating the porous glass in a reducing atmosphere, the luminescent glass comprising at least 96 wt. % of SiO 2 , 0.5 to 3 wt. % of B 2 O 3 , 0.1 to 1.5 wt. % of Al 2 O 3 , and 50 to 2000 ppm of at least one metal component selected from the group consisting of Sc, Y, La, Pr, Nd, Pm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and elements of Groups IVA, VA, VIA, VIIA, VIII, IIB and IVB of the Periodic Table.