Process for preparing rare earth luminescent materials
    4.
    发明授权
    Process for preparing rare earth luminescent materials 失效
    制备稀土发光材料的方法

    公开(公告)号:US07060202B2

    公开(公告)日:2006-06-13

    申请号:US10153731

    申请日:2002-05-24

    CPC分类号: C09K11/7797

    摘要: The present invention relates to a process for preparing rare earth trichromatic phosphor, comprising the following steps: (1) providing precursors for at least one composition formula selected from the group consisting of CaBPO5:xEu:yTb, CaAlrB1-rPO5:xEu:yTb and Ca2B5O9Cl:xEu:yTb, wherein x=0.02–0.05 (mole ratio), y=0.001–0.01 (mole ratio) and r=0.5–0.8; (2) grinding and mixing the precursors; and (3) calcining the product obtained in step (2) at 800–1000° C. for 3–5 hours. According to the present process, only one matrix material and two rare earth reactive ions (Eu3+ and Tb3+) are required to synthesize rare earth trichromatic phosphor. That is to say, no reducing reagent is needed; and absence of reducing agent(s) reduces environmental pollution.

    摘要翻译: 本发明涉及一种制备稀土三基色荧光粉的方法,包括以下步骤:(1)提供至少一种选自CaBPO 5:xEu:yTb的组成式的前体, u r r> u u u u u u u u u u u u u u u u u u u u u u u u u u u u::/ / / / / / / / / / / / / / / / / / / / / / / / 其中x = 0.02-0.05(摩尔比),y = 0.001-0.01(摩尔比)和r = 0.5-0.8;其中x = 0.02-0.05(摩尔比) (2)研磨和混合前体; 和(3)将步骤(2)中得到的产物在800-1000℃煅烧3-5小时。 根据本发明,只需要一种基质材料和两种稀土反应离子(Eu 3+ + 3+和Tb 3+)来合成稀土三色荧光体。 也就是说,不需要还原剂; 并且没有还原剂减少了环境污染。

    Long afterglow silicate luminescent material and its manufacturing method
    5.
    发明授权
    Long afterglow silicate luminescent material and its manufacturing method 失效
    长余辉硅酸盐发光材料及其制造方法

    公开(公告)号:US6093346A

    公开(公告)日:2000-07-25

    申请号:US997924

    申请日:1997-12-24

    摘要: The long afterglow silicate luminescent materials which main chemical composition formula is: aMO-bM'O-cSiO.sub.2 -dR:Eu.sub.x Ln.sub.y, wherein M represents one or more elements selected from a group consisting of Sr, Ca, Ba and Zn; M' represents one ore more elements selected from a group consisting of Mg, Cd and Be; R represents one or two components selected from B.sub.2 O.sub.3 and P.sub.2 O.sub.5 ; Ln represents one or more elements selected from a group consisting of Nd, Dy, Ho, Tm, La, Pr, Tb, Ce, Mn, Bi, Sn and Sb; a, b, c, d, x and y are mole coefficients; wherein 0.6.ltoreq.a.ltoreq.6, 0.ltoreq.b.ltoreq.5, 1.ltoreq.o.ltoreq.9, 0.ltoreq.d.ltoreq.0.7, 0.00001.ltoreq.x.ltoreq.0.2, and 0.ltoreq.y.ltoreq.0.3; these luminescent materials have long afterglow characteristic after absorbing short wavelength lights.

    摘要翻译: 主要化学组成式为:aMO-bM'O-cSiO2-dR:EuxLny的长余辉硅酸盐发光材料,其中M表示选自Sr,Ca,Ba和Zn中的一种或多种元素; M'表示选自Mg,Cd和Be中的一种以上元素; R表示选自B 2 O 3和P 2 O 5中的一种或两种组分; Ln表示选自Nd,Dy,Ho,Tm,La,Pr,Tb,Ce,Mn,Bi,Sn和Sb中的一种或多种元素; a,b,c,d,x和y是摩尔系数; 其中0.6≤i≤6,0≤b≤5,0≤b≤0.0,0.0≤n≤0.7,0.00001≤x≤0.2 ,0

    Low-pressure mercury vapor discharge lamp
    6.
    发明授权
    Low-pressure mercury vapor discharge lamp 失效
    低压汞蒸气放电灯

    公开(公告)号:US4800319A

    公开(公告)日:1989-01-24

    申请号:US814284

    申请日:1985-12-23

    CPC分类号: H01J61/44

    摘要: A low-pressure mercury vapor discharge lamp having a very satisfactory color rendition, (R(a,8).gtoreq.85), a color temperature of 2300-3300 K and a color point on or near the Planckian curve. The lamp is provided with a luminescent layer comprising:a. a luminescent alkaline earth metal halophosphate activated by Sb.sup.3+ and Mn.sup.2+ having a color temperature of 2900-5000 K;b. a luminescent material activated by Eu.sup.2+ with an emission maximum van 470-500 nm and a half-value width of at most 90 nm, andc. a luminescent rare earth metal metaborate activated by Ce.sup.3+ and Mn.sup.2+, having a fundamental lattice Ln(Mg,Zn,Cd) B.sub.5 O.sub.10, in which Ln represents the elements Y, La and/or Gd, which borate has red Mn.sup.2+ emission.Further, the lamp is provided with means for absorbing blue radiation having wavelengths below 480 nm. Preferably, the luminescent layer further contains:d. a luminescent material activated by Tb.sup.3+ which exhibits green Tb.sup.3+ emission.Besides a very satisfactory color rendition at a low color temperature, these lamps have a high luminous flux and a high maintenance of the luminous flux during their life.

    摘要翻译: (R(a,8)> / = 85),色温为2300-3300K的低压汞蒸汽放电灯,以及普朗克曲线上或附近的色点。 该灯具有发光层,包括:a。 由Sb3 +和Mn2 +活化的发光碱土金属卤代磷酸盐,色温为2900-5000K; b。 Eu2 +激发的发光材料,发射最大值为470〜500nm,半值宽度为90nm以下,c。 由Ce3 +和Mn2 +活化的发光稀土金属偏硼酸盐,其具有基本晶格Ln(Mg,Zn,Cd)B5O10,其中Ln表示元素Y,La和/或Gd,该硼酸盐具有红色Mn 2+发射。 此外,灯具有用于吸收波长低于480nm的蓝色辐射的装置。 优选地,发光层还包含:d。 由Tb3 +活化的发光材料,其呈现出绿色的Tb3 +发射。 除了在低色温下非常令人满意的色彩再现之外,这些灯具有高光通量和高寿命期间的光通量维持。

    Process for producing a yellow emitting phosphor
    7.
    发明授权
    Process for producing a yellow emitting phosphor 失效
    制造黄色发光荧光体的方法

    公开(公告)号:US4594178A

    公开(公告)日:1986-06-10

    申请号:US713578

    申请日:1985-03-18

    IPC分类号: C09K11/77 H01J61/44 C09K11/73

    CPC分类号: C09K11/7725 H01J61/44

    摘要: Yellow emitting fluorescent lamp phosphors comprise cerium and manganese activated calcium-strontium fluoroapatite compositions represented by the approximate formula(Ca.sub.1-t Sr.sub.t).sub.v Ce.sub.w Mn.sub.x (PO.sub.4).sub.y F.sub.zwhereint is from 0 to 1v is from about 4.12 to about 4.30w is about 0.295x is from about 0.147 to about 0.295y is about 3.0z is from about 1.72 to about 2.21.An improved two step firing process for producing the disclosed phosphors is described and an improved fluorescent lamp employing the disclosed phosphors is also described.

    摘要翻译: 黄色荧光灯荧光体包括由近似式(Ca1-tSrt)vCewMnx(PO4)yFz表示的铈和锰活化的钙 - 锶氟磷灰石组合物,其中t为0至1v约为4.12至约4.30w,为约0.295× 为约0.147至约0.295y,约3.0z为约1.72至约2.21。 描述了用于制备所公开的磷光体的改进的两步烧制方法,并且还描述了采用所公开的磷光体的改进的荧光灯。

    Method for converting radiographic images
    8.
    发明授权
    Method for converting radiographic images 失效
    用于转换放射照相图像的方法

    公开(公告)号:US4507379A

    公开(公告)日:1985-03-26

    申请号:US525318

    申请日:1983-08-22

    摘要: In a radiographic image conversion method in which a stimulating light is irradiated to a panel storing a radiation energy in the form of an image to reproduce and then to read out the image, the response speed of a stimulation and the reading speed of a radiographic image area increased by making use of (1) a phosphate type phosphor having the composition, xM.sub.3 (PO.sub.4).sub.2.NX.sub.2 :yA or M.sub.3 (PO.sub.4).sub.2 :yA, which is a highly sensitive phosphor capable of readily releasing the stored energy when a stimulating light is irradiated to the phosphor, and (2) the stimulating light having the range of the wavelengths from a visible ray of not shorter that 500 nm to an infrared ray.

    摘要翻译: 在放射线照相图像转换方法中,其中刺激光照射到存储图像形式的辐射能量的面板上,以再现图像,然后读出图像,刺激的响应速度和放射线照相图像的读取速度 通过使用(1)具有以下成分的磷酸盐型磷光体来增加面积:xM3(PO4)2NX2:yA或M3(PO4)2:yA,它是一种能够容易地释放储能的高灵敏度荧光体,当a 刺激光被照射到荧光体上,和(2)具有波长范围从不小于500nm的可见光到红外线的刺激光。