Rare earth doped host materials
    4.
    发明授权
    Rare earth doped host materials 失效
    稀土掺杂主体材料

    公开(公告)号:US06699406B2

    公开(公告)日:2004-03-02

    申请号:US09272912

    申请日:1999-03-19

    Abstract: A rare earth element doped composition having a dopant concentration of up to about 60 mole percent of one or more rare earth elements selected from Tb, Dy, Ho, Er, Tm, Yb and Lu, wherein the composition is optically transparent to wavelengths at which excitation, fluorescence or luminescence of the rare earth elements occur. Method for making the compositions, composite materials having dispersed therein the compositions and luminescent devices containing optical or acoustical elements formed from the composite materials are also disclosed.

    Abstract translation: 掺杂剂浓度高达约60摩尔%的稀土元素掺杂组合物,其选自Tb,Dy,Ho,Er,Tm,Yb和Lu中的一种或多种稀土元素,其中该组合物对于波长为 发生稀土元素的激发,荧光或发光。 还公开了制备组合物的方法,其中分散有组合物的复合材料和包含由复合材料形成的光学或声学元件的发光装置。

    Stimulable phosphor sheet and energy subtraction processing method using
the same
    6.
    发明授权
    Stimulable phosphor sheet and energy subtraction processing method using the same 失效
    稳定的荧光体片和能量减法处理方法使用相同

    公开(公告)号:US5051589A

    公开(公告)日:1991-09-24

    申请号:US510914

    申请日:1990-04-18

    Inventor: Satoshi Arakawa

    Abstract: Stimulable phosphor sheet comprises a plurality of stimulable phosphors which are mixed together or which take on the form of layers. The stimulable phosphors have different response speeds, with which light emission from the stimulable phosphors responds to stimulating rays which cause them to emit light in proportion to the amounts of radiation stored thereon during their exposure to radiation, and different radiation absorption characteristics which represent absorptivity with respect to energy levels of the radiation. Radiation images of an object are stored on the stimulable phosphor sheet. The stimulable phosphor sheet is then exposed to pulsed stimulating rays. Light emitted by the stimulable phosphor sheet is detected with different timings corresponding to the response speeds of the stimulable phosphors, and a plurality of image signals representing the radiation images are thereby obtained. Thereafter, subtraction processing for the radiation images is carried out on the plurality of the image signals.

    Abstract translation: 可刺激的荧光粉片包括多个可激发的荧光体,它们混合在一起或以层的形式。 可刺激的荧光体具有不同的响应速度,来自可刺激磷光体的光发射响应于刺激光线,其使得它们在其暴露于辐射期间与其上存储的辐射量成比例地发光,以及不同的辐射吸收特性,其表示吸收 尊重辐射能级。 物体的辐射图像存储在可刺激的荧光体片材上。 然后将可刺激的荧光粉片暴露于脉冲刺激的射线。 用与可激发荧光体的响应速度相对应的不同定时检测由可刺激荧光粉片发射的光,从而获得表示辐射图像的多个图像信号。 此后,对多个图像信号进行放射线图像的减法处理。

    Display tube with terbium-activated blue-luminescing phosphor screen
    7.
    发明授权
    Display tube with terbium-activated blue-luminescing phosphor screen 失效
    显示管与铽激活蓝色发光荧光屏

    公开(公告)号:US4604550A

    公开(公告)日:1986-08-05

    申请号:US667043

    申请日:1984-11-01

    CPC classification number: C09K11/7771 C09K11/777 H01J29/185 H01J29/28

    Abstract: A display tube comprising in an evacuated envelope means to generate at least one electron beam which is focused on a display screen and describes a field thereon, which display screen comprises a terbium-activated blue-luminescing phosphor on a carrier, and in which the light emitted by the phosphor falls through a filter. If the energy of the emissions of the phosphor which find their origin in the .sup.5 D.sub.3 -level of terbium is at least 40% of the energy of the emissions of all terbium levels and the filter has a transmission of more than 75% at those wavelengths where the .sup.5 D.sub.3 .fwdarw..sup.7 F.sub.5 and the .sup.5 D.sub.3 .fwdarw..sup.7 F.sub.4 emissions of terbium are located and the filter has a transmission of less than 10% at those wavelengths where the .sup.5 D.sub.4 .fwdarw..sup.7 F.sub.5 and the .sup.5 D.sub.4 .fwdarw..sup.7 F.sub.4 and the .sup.5 D.sub.4 .fwdarw..sup.7 F.sub.3 emissions of terbium are located so that the color point of the filtered light is located in the range x.ltoreq. 0.200 and y.ltoreq.0.100 in the CIE color triangle, a well saturated blue picture is displayed having a satisfactorily high energy efficiency.

    Abstract translation: 一种显示管,包括在真空包络中的装置,以产生聚焦在显示屏幕上的至少一个电子束,并描述其上的场,该显示屏幕包括在载体上的铽激活的蓝色发光荧光体,其中光 由荧光体发射的光通过滤光器落下。 如果发现其起源于铽的5D3级的荧光体的发射能量是所有铽水平的发射能量的至少40%,并且在那些波长处的滤波器的透射率大于75% 在5D4-> 7F5和5D4-> 7F4和5D4-> 7F3发射的波长处,铽的5D3-> 7F5和5D3-> 7F4发射位于滤波器的透射率小于10% 铽的位置使得滤色光的色点位于CIE彩色三角形的x <0.2和y <0.100范围内,显示出良好饱和的蓝色图像,具有令人满意的高能量效率。

    X-ray image converter devices using rare earth oxyhalide phosphors
    8.
    发明授权
    X-ray image converter devices using rare earth oxyhalide phosphors 失效
    使用稀土卤氧化物荧光体的X射线图像转换器装置

    公开(公告)号:US4603259A

    公开(公告)日:1986-07-29

    申请号:US735305

    申请日:1985-05-17

    Inventor: Jacob G. Rabatin

    CPC classification number: C09K11/777 G21K4/00

    Abstract: X-ray image converters using rare earth oxyhalide phosphors activated with terbium and/or thulium ion are described exhibiting improved brightness. Novel reflector means are provided in said x-ray image converter devices which reflect UV radiation incident thereupon back through the phosphor layer to associated readout or recording means sensitive to this wavelength radiation. A multi layer x-ray screen construction utilizing said improved reflector means is also described providing improved image sharpness while further reducing the crossover problem because more reflected UV radiation is being transmitted to an associated photographic film.

    Abstract translation: 描述了使用用铽和/或ium离子激活的稀土卤氧化物荧光体的X射线图像转换器显示出改进的亮度。 在所述X射线图像转换器装置中设置有新的反射器装置,其反射通过荧光体层反射的UV辐射到对该波长辐射敏感的相关读出或记录装置。 还描述了利用所述改进的反射器装置的多层x射线屏幕结构,其提供改善的图像清晰度,同时进一步减少交叉问题,因为更多的反射的UV辐射被传输到相关的摄影胶片。

    Phosphor
    9.
    发明授权
    Phosphor 失效

    公开(公告)号:US4539138A

    公开(公告)日:1985-09-03

    申请号:US591224

    申请日:1984-03-12

    CPC classification number: C09K11/7788 C09K11/7701 C09K11/7705 C09K11/777

    Abstract: A rare earth element activated divalent metal represented by the formulaM.sup.II FX.xSiO.sub.2 :yLnwherein M.sup.II is at least one divalent metal selected from the group consisting of Ba, Ca, Sr, Mg, Zn and Cd; Ln is at least one rare earth element selected from the group consisting of Eu, Tb, Ce, Tm, Dy, Pr, Ho, Nd, Yb, Er, Sm and Gd; X is at least one halogen selected from the group consisting of Cl, Br and I; x and y are numbers satisfying the condition 5.times.10.sup.-5 .ltoreq.x.ltoreq.0.5 and of 0

    Abstract translation: 由式MIIFX.xSiO 2:yLn表示的稀土元素活化二价金属,其中MII是选自Ba,Ca,Sr,Mg,Zn和Cd中的至少一种二价金属; Ln是选自Eu,Tb,Ce,Tm,Dy,Pr,Ho,Nd,Yb,Er,Sm和Gd中的至少一种稀土元素; X是选自Cl,Br和I中的至少一种卤素; x和y分别是满足条件5×10-5≤x≤0.5且0≤y≤0.2的数字。 该荧光体具有发光亮度高,粉末流动性高,余辉性好等特点。

    Recrystallization of activated rare-earth oxyhalide phosphors
    10.
    发明授权
    Recrystallization of activated rare-earth oxyhalide phosphors 失效
    活化稀土卤氧化物荧光粉的重结晶

    公开(公告)号:US4311487A

    公开(公告)日:1982-01-19

    申请号:US158192

    申请日:1980-06-11

    CPC classification number: G21K4/00 C09K11/7701 C09K11/777

    Abstract: A method for the recrystallization of activated rare-earth oxyhalide phosphors is disclosed. The method comprises recrystallizing the phosphor by firing a phosphor-flux mixture in an inert atmosphere. The phosphor-flux is substantially homogeneous and the flux contains substantially dehydrated magnesium halide. One particularly preferred phosphor made by the method is a lanthanum oxychloride phosphor coactivated with bismuth and ytterbium. This phosphor made by the present method has high speed and low afterglow.

    Abstract translation: 公开了一种活化的稀土氧卤化物荧光体的再结晶方法。 该方法包括在惰性气氛中烧制磷光体 - 助熔剂混合物,使磷光体重结晶。 磷光体通量基本上是均匀的,并且焊剂含有基本脱水的卤化镁。 通过该方法制造的一种特别优选的荧光体是与铋和镱共激活的氯氧化镧荧光体。 通过本方法制造的该荧光体具有高速度和低余辉。

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