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    • 7. 发明授权
    • Boron aluminosilicate glass
    • 硼铝硅酸盐玻璃
    • US07323427B2
    • 2008-01-29
    • US10789926
    • 2004-02-27
    • Silke WolffUte WoelfelUwe KolbergHolger Kasprzik
    • Silke WolffUte WoelfelUwe KolbergHolger Kasprzik
    • C03C3/093C03C4/00
    • C03C13/046C03C3/066C03C3/068C03C3/091C03C3/093C03C3/095
    • A short optical glass is disclosed which is particularly suited for the applications imaging, projection, telecommunication, optical information technology and/or laser technology, also particularly suited for fiber applications (light guides or imaging guides). Preferably, the glass has a refractive index of 1.54≦nd≦1.62 and an Abbe coefficient of 48≦vd=57. It further has good attenuating and ion exchange characteristics, good chemical stability and good crystallization stability. The glass comprises 35 to 50 wt.-% SiO2, 0.1 to 6 wt.-% B2O3, 0.1 to 7 wt.-% Al2O3, 0.1 to 4 wt.-% P2O5, 4 to 24 wt.-% R2O (alkali oxides), 6 to 14.5 wt.-% BaO, 0 to 12 wt.-% other RO (alkaline earth oxides), 14 to 25 wt.-% ZnO, 0 to 5 wt.-% La2O3, 0 to 10 wt.-% ZrO2, wherein R2O is an alkali oxide, RO is an alkaline earth oxide other than BaO, wherein Li2O is 6 wt.-% at the most, wherein the glass does not contain any GeO2, SnO, SnO2, AgO, Sb2O3 and, preferably, no rare earth oxides, and wherein the glass may be molten while adding suitable purifying agents.
    • 公开了一种特别适用于成像,投影,通信,光学信息技术和/或激光技术的应用,也特别适用于光纤应用(光导或成像引导)的短光学玻璃。 优选地,玻璃的折射率为1.54 <= N 2 O是碱金属氧化物,RO是BaO以外的碱土金属氧化物,其中Li 2 O 2最多为6重量%,其中玻璃不含任何 GeO 2,SnO,SnO 2,AgO,Sb 2 O 3,优选不存在稀土氧化物 ,并且其中玻璃可以熔融同时加入合适的净化剂。