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    • 44. 发明授权
    • Phosphor
    • US4978472A
    • 1990-12-18
    • US747437
    • 1985-06-21
    • Noboru KoteraShusaku EguchiNorio Miura
    • Noboru KoteraShusaku EguchiNorio Miura
    • C09K11/77C09K11/62
    • C09K11/7773C09K11/7705C09K11/7733C09K11/7791
    • A rare earth element activated complex halide phosphor represented by the formulaBaF.sub.2.aBaX.sub.2.bMgF.sub.2.cMe.sup.I F.dMe.sup.II F.sub.2.eMe.sup.III F.sub.3 :fLnwherein X is at least one halogen selected from the group consisting of Cl, Br and I, Me.sup.I is at least one alkali metal selected from the group consisting of Li and Na, Me.sup.II is at least one divalent metal selected from the group consisting of Be, Ca Sr, Me.sup.III is at least one trivalent metal selected from the group consisting of Al, Ga, Y and La, Ln is at least one rare earth element selected from the group consisting of Eu, Ce an Tb, and a, b, c, d, e and f are numbers satisfying the conditions of 0.90.ltoreq.a.ltoreq.1.05, 0.ltoreq.b.ltoreq.1.2, 0.ltoreq.c.ltoreq.0.9, 0.ltoreq.d.ltoreq.1.2, 0.ltoreq.e.ltoreq.0.03, 10.sup.-6 .ltoreq.f.ltoreq.0.03 and c+d+e.noteq.0. The phosphor emits light of high luminance when stimulated by light of wavelength ranging from 450 to 800 nm after exposure to ionizing radiation, ultraviolet rays, cathode rays, or the like. Further, the phosphor emits thermoluminescent light of high luminance when heated after exposure to ionizing radiations, ultraviolet rays, cathode rays, or the like.
    • 46. 发明授权
    • Intensifying screens
    • 加强屏幕
    • US4696868A
    • 1987-09-29
    • US912515
    • 1986-09-29
    • Yuji AokiHidenaga HoriuchiAkio UmemotoNorio Miura
    • Yuji AokiHidenaga HoriuchiAkio UmemotoNorio Miura
    • G03C5/17G21K4/00H05B33/00
    • G21K4/00G03C5/17
    • An intensifying screen comprising: a support, a fluorescent layer on the support and a protective layer on the fluorescent layer, wherein the fluorescent layer is composed essentially of a blue emitting phosphor selected from the group consisting of (1) a M.sup.II WO.sub.4 phosphor wherein M.sup.II is at least one of Mg, Ca, Zn and Cd, (2) a CaWO.sub.4 phosphor, (3) a BaSO.sub.4 :Pb phosphor, (4) a BaSO.sub.4 :Eu.sup.2+ phosphor, (5) a (Ba, Sr)SO.sub.4 :Eu.sup.2+ phosphor, (6) a MeF.sub.2.pMe'X.sub.2.qKX'.rMe"SO.sub.4 :mEu.sup.2+, nTb.sup.3+ phosphor, wherein Me is at least one of Mg, Ca, Sr and Ba, each of Me' and Me" is at least one of Ca, Sr and Ba, each of X and X' is at least one of Cl and Br, and p, q, r, m and n are numbers which satisfy the conditions of 0.80.ltoreq.p.ltoreq.1.5, 0.ltoreq.q.ltoreq.2.0, 0.ltoreq.r.ltoreq.1.0, 0.001.ltoreq.m.ltoreq.0.10 and 0.ltoreq.n.ltoreq.0.05, respectively, provided q+r.noteq.0, (7) a LnOX:Tm phosphor wherein Ln is La or Gd, and X is Cl or Br, (8) a Ln(Ta.sub.1-x, Nb.sub.x)O.sub.4 :Tm phosphor wherein Ln is at least one of La, Y Gd and Lu, and 0.ltoreq.x.ltoreq.0.3, (9) a Y.sub.2 O.sub.2 S:Tb phosphor, (10) a CsI:Na phosphor, (11) a CsI:T1 phosphor, (12) a NaI phosphor, (13) a ZnS:Ag phosphor and (14) a HfP.sub.2 O.sub.7 : Cu phosphor, and wherein at least one of the fluorescent and protective layers is colored with a colorant which has a main absorption peak at a wavelength in the region of 400 to 600 nm.
    • 一种增强屏幕,包括:支撑体,支撑体上的荧光层和荧光层上的保护层,其中荧光层基本上由选自以下的蓝色发光荧光体组成:(1)MIIWO4荧光体,其中MII为 Mg,Ca,Zn和Cd中的至少一种,(2)CaWO 4荧光体,(3)BaSO 4 :Pb荧光体,(4)BaSO 4 :Eu 2+荧光体,(5)a(Ba,Sr)SO 4: ,(6)MeF2.pMe'X2.qKX'.rMe''SO4:mEu2 +,nTb3 +荧光体,其中Me是Mg,Ca,Sr和Ba中的至少一种,Me'和Me'中的每一个至少是 Ca,Sr和Ba中的一个,X和X'分别为Cl和Br中的至少一个,p,q,r,m和n为满足条件为0.80