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    • 4. 发明授权
    • Oxide phosphorescent glass capable of exhibiting a long lasting
after-glow and photostimulated luminescence
    • 氧化磷光玻璃能够表现出持久的余辉和光刺激发光
    • US6123872A
    • 2000-09-26
    • US210904
    • 1998-12-16
    • Masaaki YamazakiYoshinori YamamotoNaruhito SawanoboriShinobu Nagahama
    • Masaaki YamazakiYoshinori YamamotoNaruhito SawanoboriShinobu Nagahama
    • G21K4/00C03C3/066C03C3/068C03C3/093C03C3/095C03C4/04C03C4/12C09K11/08C09K11/63C09K11/79G01T1/00C09K11/00
    • C03C4/04C03C3/066C03C3/068C03C4/12C09K11/757C09K11/7755C09K11/778
    • The present invention provides an oxide glass capable of exhibiting a long lasting afterglow and photostimulated phosphorescence, whereby energy can be accumulated by radiation excitation, for example, by .gamma.-rays, X-rays, UV-rays, etc., light emission can be continued for a long time even after stopping the excitation. Furthermore, the long lasting afterglow and photostimulated luminescence oxide glass can be used not only as a phosphorescent material for night illumination or night signal, but also as a material for confirming an infrared laser or controlling an optical axis because of exhibiting photostimulated luminescence by irradiation of infrared rays or visible rays. In addition, this glass is useful for recording or reproducing of .gamma.-rays, X-rays or UV-rays images. This glass material is represented, in term of atoms for making up the glass, by the following chemical composition (mol %):______________________________________ SiO.sub.2 1 to 55% B.sub.2 O.sub.3 1 to 50% (SiO.sub.2 + B.sub.2 O.sub.3 = 20 to 60%) ZnO 30 to 75% Tb.sub.2 O.sub.3 0 to 7% MnO 0 to 2% (Tb.sub.2 O.sub.3 + MnO = 0.01 to 7%) R.sub.2 O 0 to 25% (R: at least one atom selected from Li, Na, K and Cs) R'O 0 to 25% (R': at least one atom selected from Mg, Ca, Sr and Ba) Al.sub.2 O.sub.3 0 to 15% Ga.sub.2 O.sub.3 0 to 15% GeO.sub.2 0 to 20% ZrO.sub.2 0 to 5% Ln.sub.2 O.sub.3 0 to 8% (Ln: at least one atom selected from Y, La, Gd, Yb, Lu, Sm, Dy, Tm and Pr) and Sb.sub.2 O.sub.3 0 to 0.5%. ______________________________________
    • 本发明提供能够显示持久的余辉和光刺激的磷光的氧化物玻璃,由此例如通过γ射线,X射线,紫外线等可以通过辐射激发而积聚能量,可以发光 持续很长时间,即使停止激发。 此外,持久的余辉和光刺激的发光氧化物玻璃不仅可以用作夜间照明或夜间信号的磷光材料,而且可以用作确认红外激光或控制光轴的材料,因为通过照射显示光刺激的发光 红外线或可见光。 此外,这种玻璃可用于记录或再现γ射线,X射线或UV射线图像。 根据以下化学成分(摩尔%)表示玻璃材料:SiO 2 1〜55%-B 2 O 3〜50%(SiO 2 + B 2 O 3 = 20〜60%) - ZnO 30〜75%-Tb 2 O 3〜7%-MnO 0〜2%(Tb 2 O 3 + MnO = 0.01〜7%)-R 2 O 0〜25%(R:至少一种选自Li,Na,K和Cs的原子) - R'O 0〜25%(R':选自Mg,Ca,Sr和Ba中的至少一个原子)-Al 2 O 3 0〜15%-Ga 2 O 0〜15%-GeO 0〜20%-ZrO 2 0〜5 %Ln2O3 0〜8%(Ln:选自Y,La,Gd,-Yb,Lu,Sm,Dy,Tm和Pr中的至少一个原子)和Sb 2 O 3 0〜0.5%。 -