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1. 发明授权

US06392248B1 Method and apparatus for color radiography, and color light emission sheet therefor 有权
标题翻译：用于彩色放射线照相的方法和装置及其彩色发光片
公开(公告)号：US06392248B1
公开(公告)日：2002-05-21
申请号：US09704526
申请日：2000-11-03
申请人： Takeshi Takahara , Akihisa Saito , Eiji Oyaizu , Koichi Nittoh , Toshiyuki Tamura
发明人： Takeshi Takahara , Akihisa Saito , Eiji Oyaizu , Koichi Nittoh , Toshiyuki Tamura
IPC分类号： G01T124
CPC分类号： G21K4/00 , G21K2004/06
摘要： A color radiography system comprises a color light emission sheet having a phosphor layer that contains a phosphor emitting in a plurality of colors to radiation and emits light under irradiation of radiation transmitted through a subject to be inspected, and a color film or a color camera that detects the light emissions of the plurality of colors into the respective colors. In the phosphor layer, a phosphor is used that has a primary emission component corresponding to one emission color in a visible light region and at least one secondary emission component, the secondary emission component having an emission color different from that of the primary emission component and a ratio of light emission to radiation of the same intensity being different from that of the primary emission component. According to the present color radiography system, image information of a plurality of colors having different sensitivity characteristics can be obtained. The image information of an appropriate density can be obtained under various conditions.
摘要翻译：彩色放射照相系统包括具有磷光体层的彩色发光片，该荧光体层包含以多种颜色发射的荧光体，以便在被照射被检查物体的辐射照射下照射并发射光;以及彩色胶片或彩色照相机，将多种颜色的光发射检测为各自的颜色。在荧光体层中，使用具有与可见光区域中的一种发光颜色相对应的一次发光成分和至少一种二次发射成分的荧光体，二次发光成分具有与一次发光成分不同的发光颜色，相同强度的发光与辐射的比率与初级发射成分不同。根据本彩色射线照相系统，可以获得具有不同灵敏度特性的多种颜色的图像信息。可以在各种条件下获得适当密度的图像信息。

2. 发明授权

US06504156B1 Ceramic scintillator material and manufacturing method thereof, and radiation detector therewith and radiation inspection apparatus therewith 有权
标题翻译：陶瓷闪烁体材料及其制造方法及其辐射检测器及其辐射检查装置
公开(公告)号：US06504156B1
公开(公告)日：2003-01-07
申请号：US09615057
申请日：2000-07-12
申请人： Takeshi Takahara , Akihisa Saito , Yukihiro Fukuta , Eiji Oyaizu , Masaaki Tamatani
发明人： Takeshi Takahara , Akihisa Saito , Yukihiro Fukuta , Eiji Oyaizu , Masaaki Tamatani
IPC分类号： G01T120
CPC分类号： C09K11/7771 , C04B35/547 , C04B35/6455 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3244 , C04B2235/34 , C04B2235/5436 , C04B2235/656 , C04B2235/6567 , C04B2235/783 , C04B2235/786 , C04B2235/95 , C04B2235/96 , G01N23/046 , G01N2223/419
摘要： A ceramic scintillator material consists of a sintered body of a rare earth oxysulfide phosphor containing Pr as an activator. The sintered body has a texture where coarse grains of irregular polyhedron and slender fine grains are intermixed. The coarse grains have a shape of for instance a dimension (average value) in the range of 50 to 100 &mgr;m, the fine grains having a shape of which average short axis is in the range of 2 to 5 &mgr;m and average long axis in the range of 5 to 100 &mgr;m. An area ratio of the coarse grains to the fine grains is in the range of 10:90 to 60:40. Such a ceramic scintillator material has, in addition to excellent light output (high sensitivity), mechanical strength capable of coping with downsizing of a detector. Furthermore, non-uniformity in sensitivity that causes artifacts can be decreased.
摘要翻译：陶瓷闪烁体材料由含有Pr作为活化剂的稀土氧硫化物荧光体的烧结体构成。烧结体具有粗糙的不规则多面体和细长细颗粒混合的结构。粗粒的形状例如为50〜100μm的尺寸（平均值），细长粒的平均短轴为2〜5μm的平均长轴，平均长轴为范围在5到100 mum。粗晶粒与细晶粒的面积比在10:90〜60:40的范围内。除了优异的光输出（高灵敏度）之外，这种陶瓷闪烁体材料还具有能够应对检测器尺寸减小的机械强度。此外，可以降低导致伪像的灵敏度的不均匀性。

3. 发明授权

US06339224B1 Radiation intensifying screen and radiation receptor and radiation inspection apparatus using the intensifying screen 有权
标题翻译：辐射强化屏和放射线受体和放射检查仪使用强化屏
公开(公告)号：US06339224B1
公开(公告)日：2002-01-15
申请号：US09423282
申请日：1999-11-08
申请人： Takeshi Takahara , Akihisa Saito , Eiji Oyaizu
发明人： Takeshi Takahara , Akihisa Saito , Eiji Oyaizu
IPC分类号： G21K400
CPC分类号： G21K4/00 , G21K2004/06
摘要： An intensifying screen, comprising a support, a phosphor layer disposed on the support and a protecting film disposed on the phosphor layer. The phosphor layer comprises a first phosphor layer formed on the support side and constituted of particles of the first phosphor having average particle diameter D1 and range coefficient k, which expresses a particle size distribution, in the range of 1.3 to 1.8, and a second phosphor layer formed on the protective film side and constituted of particles of the second phosphor having average particle diameter D2 (>D1) and range coefficient k, which expresses a particle size distribution, in the range of 1.5 to 2.0. The ratio (CW1:CW2) of coating weight per unit area of the particles of the first phosphor in the first phosphor layer CW1 and coating weight per unit area of the particles of the second phosphor in the second phosphor layer CW2 is in the range of from 8:2 to 6:4. According to such intensifying screens, even when phosphors of, for instance, high emission efficiency are employed, while preventing lowering of speed and sharpness from occurring, granularity can be improved.
摘要翻译：一种增强屏幕，包括支撑体，设置在支撑体上的荧光体层和设置在荧光体层上的保护膜。荧光体层包括形成在支撑侧并由平均粒径D1和范围系数k表示粒度分布在1.3至1.8的范围内的第一荧光体的颗粒构成的第一荧光体层和第二荧光体由形成在保护膜侧的由在平均粒径D2（> D1）和范围系数k（表示粒度分布）的第二荧光体的颗粒构成的层在1.5至2.0的范围内。第一荧光体层CW1中的第一荧光体的粒子的单位面积的涂布重量的比例（CW1：CW2）和第二荧光体层CW2中的第二荧光体的粒子的每单位面积的涂布重量的比例在从8：2到6：4。根据这样的增强屏幕，即使采用例如高发光效率的荧光体，也能够防止速度和锐度的降低而发生粒度的提高。

4. 发明授权

US08937286B2 Solid scintillator and electron beam detector using the same 有权
标题翻译：固体闪烁体和电子束检测器使用
公开(公告)号：US08937286B2
公开(公告)日：2015-01-20
申请号：US14350196
申请日：2012-10-26
申请人： Kazumitsu Morimoto , Yoshitaka Adachi , Akihisa Saito , Eiji Oyaizu , Masaki Toyoshima
发明人： Kazumitsu Morimoto , Yoshitaka Adachi , Akihisa Saito , Eiji Oyaizu , Masaki Toyoshima
IPC分类号： C09K11/67 , C09K11/77 , C09K11/08 , H01J37/244
CPC分类号： C09K11/7774 , G21K4/00 , H01J37/244 , H01J2237/2443 , H01J2237/28 , Y10T428/24355
摘要： The present invention provides a solid scintillator comprising a rare earth oxide sintered body, wherein: an afterglow time, which is the time required for a light output from the solid scintillator to degrease from a maximum value to 1/e of the maximum value, is 200 ns or shorter. The rare earth oxide sintered body preferably has a composition represented by a general formula (1): LnaXbOc:Ce (1), wherein Ln is one or more elements selected from Y, Gd and Lu; X is one or more elements selected from Si, Al and B; and a, b and c satisfy 1≦a≦5, 0.9≦b≦6, and 2.5≦≦c≦13, respectively.
摘要翻译：本发明提供一种包含稀土氧化物烧结体的固体闪烁体，其中，从固体闪烁体输出的光从最大值到最大值1 / e的所需时间的余辉时间为 200 ns或更短。稀土氧化物烧结体优选具有由通式（1）表示的组成：LnaXbOc：Ce（1），其中Ln是选自Y，Gd和Lu中的一种或多种元素; X是选自Si，Al和B中的一种或多种元素; a，b和c分别满足1＆nlE; a＆nlE; 5,0.9＆nlE; b＆nlE; 6和2.5＆nlE;＆nlE; c＆nlE; 13。

5. 发明申请

US20060033030A1 X-ray detector 审中-公开
标题翻译： X射线探测器
公开(公告)号：US20060033030A1
公开(公告)日：2006-02-16
申请号：US10509035
申请日：2003-03-28
申请人： Keiichi Ito , Hiroshi Aida , Eiji Oyaizu , Yukihiro Fukuta , Akihisa Saito , Akiko Fujisawa , Katsuhisa Homma
发明人： Keiichi Ito , Hiroshi Aida , Eiji Oyaizu , Yukihiro Fukuta , Akihisa Saito , Akiko Fujisawa , Katsuhisa Homma
IPC分类号： G01T1/20
CPC分类号： G01T1/2018
摘要： An X-ray detector comprising a scintillation layer separated by a partition for each pixel and a photodiode for converting fluorescent light, which is converted by the sciltillation layer, into a signal charge, wherein when an average particle diameter of phosphor particles forming the scintillation layer is Ds and an average particle diameter forming the partition is Dw, Ds>Dw is satisfied.
摘要翻译：一种X射线检测器，包括由用于每个像素的隔板分离的闪烁层和用于将由所述滤色层转换的荧光转换成信号电荷的光电二极管，其中当形成所述闪烁层的荧光体颗粒的平均粒径是Ds，形成分隔层的平均粒径为Dw，Ds> Dw。

6. 发明授权

US08693627B2 Intensifying screen for X-ray detector, X-ray detector, and X-ray inspection apparatus 有权
标题翻译：强化X射线检测仪，X射线检测仪，X射线检测仪等
公开(公告)号：US08693627B2
公开(公告)日：2014-04-08
申请号：US13477503
申请日：2012-05-22
申请人： Eiji Oyaizu , Akihisa Saito , Yoshitaka Adachi , Kazumitsu Morimoto
发明人： Eiji Oyaizu , Akihisa Saito , Yoshitaka Adachi , Kazumitsu Morimoto
IPC分类号： G01T1/202 , C09K11/85 , C09K11/84 , G01N23/04 , G01N23/204
CPC分类号： C09K11/7733 , C09K11/7771 , G21K4/00 , G21K2004/08
摘要： In an embodiment, an X-ray detector has a transmissive fluorescence generating portion, and a reflective fluorescence generating portion. The transmissive and reflective fluorescence generating portions have at least one of an intensifying screen having a phosphor layer that contains praseodymium-activated gadolinium oxysulfide phosphor particles in which a ratio of particles having a particle diameter falling in ±30% of a center particle diameter is 45% by volume or more and their filling rate is 60% by volume or more, and an intensifying screen having a phosphor layer that contains europium-activated barium fluorochloride phosphor particles in which a ratio of particles having a particle diameter falling in ±30% of a center particle diameter is 45% by volume or more and their filling rate is 45% by volume or more.
摘要翻译：在一个实施例中，X射线检测器具有透射荧光产生部分和反射荧光产生部分。透射和反射荧光产生部分具有至少一个具有荧光体层的增强屏幕，其中荧光体层含有镨激活的氧硫化钆荧光体颗粒，其中粒径在中心粒径的±30％中的颗粒的比例为45 体积比以上，填充率为60体积％以上，具有含有铕激活的氟化钡荧光体粒子的荧光体层的增强丝网，其中粒径在±30％以下的粒子的比率中心粒径为45体积％以上，填充率为45体积％以上。

7. 发明申请

US20090078891A1 RADIATION SHIELDING SHEET 有权
标题翻译：辐射屏蔽片
公开(公告)号：US20090078891A1
公开(公告)日：2009-03-26
申请号：US11816778
申请日：2006-02-16
申请人： Eiji Oyaizu
发明人： Eiji Oyaizu
IPC分类号： G21F3/00
CPC分类号： G21F1/10 , G21Y2002/201 , G21Y2002/302 , G21Y2004/10
摘要： A radiation shielding sheet formed by filling a shielding material into an organic polymer material. The shielding material is an oxide powder containing at least one element selected from the group consisting of lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), samarium (Sm), europium (Eu) and gadolinium (Gd). The oxide powder has an average grain size of 1 to 20 μm, and a volumetric ratio of the shielding material filled in the radiation shielding sheet is 40 to 80 vol. %.
摘要翻译：通过将屏蔽材料填充到有机聚合物材料中形成的辐射屏蔽片。屏蔽材料是含有选自镧（La），铈（Ce），镨（Pr），钕（Nd），钐（Sm），铕（Eu）和钆（镧）的至少一种元素的氧化物粉末 Gd）。氧化物粉末的平均粒径为1〜20μm，并且填充在辐射屏蔽片中的屏蔽材料的体积比为40〜80体积％。％。

8. 发明授权

US07923708B2 Radiation shielding sheet 有权
标题翻译：辐射屏蔽片
公开(公告)号：US07923708B2
公开(公告)日：2011-04-12
申请号：US11816778
申请日：2006-02-16
申请人： Eiji Oyaizu
发明人： Eiji Oyaizu
IPC分类号： G21F5/00
CPC分类号： G21F1/10 , G21Y2002/201 , G21Y2002/302 , G21Y2004/10
摘要： A radiation shielding sheet formed by filling a shielding material into an organic polymer material. The shielding material is an oxide powder containing at least one element selected from the group consisting of lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), samarium (Sm), europium (Eu) and gadolinium (Gd). The oxide powder has an average grain size of 1 to 20 μm, and a volumetric ratio of the shielding material filled in the radiation shielding sheet is 40 to 80 vol. %.
摘要翻译：通过将屏蔽材料填充到有机聚合物材料中形成的辐射屏蔽片。屏蔽材料是含有选自镧（La），铈（Ce），镨（Pr），钕（Nd），钐（Sm），铕（Eu）和钆（镧）的至少一种元素的氧化物粉末 Gd）。氧化物粉末的平均粒径为1〜20μm，填充在辐射屏蔽片中的屏蔽材料的体积比为40〜80体积％。％。

9. 发明授权

US07675039B2 Phosphor sheet for radiation detector, radiation detector and apparatus for radiographic equipment 有权
标题翻译：用于放射线检测器的荧光板，用于射线照相设备的放射线检测器和设备
公开(公告)号：US07675039B2
公开(公告)日：2010-03-09
申请号：US10528661
申请日：2003-09-25
申请人： Eiji Oyaizu , Masami Okamura
发明人： Eiji Oyaizu , Masami Okamura
IPC分类号： G01T1/20
CPC分类号： G21K4/00 , C09K11/7767 , C09K11/7784
摘要： A phosphor sheet 8 for a radiation detector used by being attached to a photoelectric conversion film 20 of a radiation detector 4 includes a sheet-shaped support 11, and a phosphor layer 12 provided thereon. The phosphor layer 12 contains a europium-activated rare earth oxysulfide phosphor having a europium concentration in a range of 0.01 to 3.5 mol %. The radiation detector 4 includes the phosphor sheet 8 being irradiated with radiation rays transmitted through a specimen and converting the radiation rays into light, a photoelectric conversion film 20 for converting the light from the phosphor sheet 8 into electric charges, and a charge information reading section 30 for reading out the charges generated on the photoelectric conversion film 20 for each of a plurality of pixels 31.
摘要翻译：用于通过安装在放射线检测器4的光电转换膜20上的放射线检测器的荧光体片8包括片状支撑体11和设置在其上的荧光体层12。荧光体层12含有铕激活的稀土氧硫化物荧光体，其铕浓度为0.01〜3.5摩尔％。放射线检测器4包括用透射通过样本的放射线照射荧光体片8并将辐射线变换成光的光电转换膜20，用于将来自荧光体片8的光转换成电荷的光电转换膜20以及电荷信息读取部 30，用于读出对于多个像素31中的每一个在光电转换膜20上产生的电荷。

10. 发明授权

US07282717B2 X-ray detector and X-ray examination apparatus using it 有权
标题翻译： X射线检测器和X射线检查仪使用它
公开(公告)号：US07282717B2
公开(公告)日：2007-10-16
申请号：US10546865
申请日：2003-09-25
申请人： Masami Okamura , Eiji Oyaizu , Yukihiro Fukuta , Yoshihito Tsutsui , Masaaki Tamatani , Mitsushi Ikeda , Hiroshi Onihashi , Kenichi Ito
发明人： Masami Okamura , Eiji Oyaizu , Yukihiro Fukuta , Yoshihito Tsutsui , Masaaki Tamatani , Mitsushi Ikeda , Hiroshi Onihashi , Kenichi Ito
IPC分类号： H01L27/00
CPC分类号： G01T1/2928 , C04B35/50 , C04B35/547 , C04B35/62625 , C04B35/6264 , C04B35/62675 , C04B35/634 , C04B35/6365 , C04B35/638 , C04B35/6455 , C04B2235/3224 , C04B2235/3227 , C04B2235/3229 , C04B2235/36 , C04B2235/42 , C04B2235/50 , C04B2235/5436 , C04B2235/604 , C04B2235/612
摘要： An X-ray detector (5) comprises an X-ray-electric charge conversion film (21) for directly converting into charges an incident X-ray that has passed through a subject (2) and is received, and a charge information reading section (15) for detecting charges produced by the X-ray-electric charge conversion film (21) as image signals. The X-ray-electric charge conversion film (21) consists essentially of a rare-earth compound containing at least one of rare-earth element and at least one of element selected from oxygen, sulfur, selenium and tellurium. The X-ray-electric charge conversion film (21) does not adversely affect human bodies and environment, and is excellent in sensitivity, film-forming feature and the like. Accordingly, the X-ray detector (5) which is provided with the improved X-ray detection sensitivity, detection accuracy and the like with environmental loads and the like decreased can be provided.
摘要翻译： X射线检测器（5）包括：X射线电荷转换膜（21），用于将通过被检体（2）的入射X射线直接转换成电荷，并接收电荷信息读取部（15），用于检测由X射线电荷转换膜（21）产生的电荷作为图像信号。 X射线电荷转换膜（21）基本上由含有稀土元素和选自氧，硫，硒和碲中的至少一种元素的稀土化合物组成。 X射线电荷转换膜（21）对人体和环境没有不良影响，并且灵敏度，成膜特征等优异。因此，可以提供具有环境负荷等的改善的X射线检测灵敏度，检测精度等的X射线检测器（5）。

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