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19 条记录 (耗时 0.018 秒)

    Siloxane Compositions Including Titanium Dioxide Nanoparticles Suitable For Forming Encapsulants
    2.
    发明申请
    Siloxane Compositions Including Titanium Dioxide Nanoparticles Suitable For Forming Encapsulants 审中-公开
    包含二氧化钛纳米颗粒的硅氧烷组合物适用于形成密封剂

    公开(公告)号：US20140008697A1

    公开(公告)日：2014-01-09

    申请号：US13991835

    申请日：2011-12-06

    申请人： Brian R. Harkness ,  Ann W. Norris ,  Shellene K. Thurston ,  Vishal Chhabra ,  Bharati S. Kulkarni ,  Nikhil R. Taskar

    发明人： Brian R. Harkness ,  Ann W. Norris ,  Shellene K. Thurston ,  Vishal Chhabra ,  Bharati S. Kulkarni ,  Nikhil R. Taskar

    IPC分类号： H01L33/56

    CPC分类号： H01L33/56 ,  C08G77/045 ,  C08G77/12 ,  C08G77/20 ,  C08L83/04 ,  H01L23/296 ,  H01L2924/0002 ,  H01L2924/00

    摘要： A composition includes an organopolysiloxane component (A) comprising at least one of a disiloxane, a trisiloxane, and a tetrasiloxane, and has an average of at least two alkenyl groups per molecule. The composition further includes an organohydrogensiloxane component (B) having an average of at least two silicon-bonded hydrogen atoms per molecule. Components (A) and (B) each independently have at least one of an alkyl group and an aryl group and each independently have a number average molecular weight less than or equal to 1500 (g/mole). The composition yet further includes a catalytic amount of a hydrosilylation catalyst component (C), and titanium dioxide (TiO2) nanoparticles (D). The composition has a molar ratio of alkyl groups to aryl groups ranging from 1:0.25 to 1:3.0. A product of the present invention is the reaction product of the composition, which may be used to make a light emitting diode.

    摘要翻译： 组合物包括包含二硅氧烷，三硅氧烷和四硅氧烷中的至少一种的有机聚硅氧烷组分（A），并且每分子平均具有至少两个烯基。 组合物还包括每分子平均具有至少两个硅键合的氢原子的有机氢硅氧烷组分（B）。 组分（A）和（B）各自独立地具有烷基和芳基中的至少一个，并且各自独立地具有小于或等于1500（g / mol）的数均分子量。 该组合物还包括催化量的氢化硅烷化催化剂组分（C）和二氧化钛（TiO 2）纳米颗粒（D）。 该组合物的烷基与芳基的摩尔比范围为1:0.25至1:3.0。 本发明的产品是可用于制造发光二极管的组合物的反应产物。

    Nanocrystalline based phosphors and photonic structures for solid state lighting
    3.
    发明授权
    Nanocrystalline based phosphors and photonic structures for solid state lighting 失效
    用于固态照明的纳米晶体荧光体和光子结构

    公开(公告)号：US06734465B1

    公开(公告)日：2004-05-11

    申请号：US10299410

    申请日：2002-11-19

    申请人： Nikhil R. Taskar ,  Rameshwar Nath Bhargava

    发明人： Nikhil R. Taskar ,  Rameshwar Nath Bhargava

    IPC分类号： H01L2715

    CPC分类号： H01L33/502 ,  H01L33/44 ,  H01L33/54

    摘要： A photonic structure for “white” light generation by phosphors under the excitation of a LED. The photonic structure mounts the LED and an optically transparent matrix having dispersed therein phosphors which will emit light under the excitation of the radiation of the LED. The transparent matrix may include nanoparticles for matching the index of refraction of the material of the matrix to that of the light generating phosphors. The matrix material may be readily formed by molding and formed into a variety of shapes including lenses for focusing the emitted light. A large number of the photonic structures may be arranged on a substrate to provide even illumination or other purposes. The phosphors dispersed in the matrix are preferably nanocrystalline.

    摘要翻译： 在LED的激发下由磷光体产生“白”光的光子结构。 光子结构安装LED和其中分散有荧光体的光学透明矩阵，其将在LED的辐射的激发下发光。 透明矩阵可以包括纳米粒子，用于将矩阵材料的折射率与发光荧光体的折射率进行匹配。 基质材料可以容易地通过模塑形成并形成为包括用于聚焦发射光的透镜的各种形状。 大量的光子结构可以被布置在基板上以提供均匀的照明或其它目的。 分散在基质中的磷光体优选是纳米晶体。

    High resolution high output microchannel based radiation sensor
    4.
    发明授权
    High resolution high output microchannel based radiation sensor 失效
    高分辨率高输出微通道辐射传感器

    公开(公告)号：US06534772B1

    公开(公告)日：2003-03-18

    申请号：US09688662

    申请日：2000-10-16

    申请人： Vishal Chhabra ,  Rameshwar Nath Bhargava ,  Dennis Gallagher ,  Samuel P. Herko ,  Bharati S. Kulkarni ,  Nikhil R. Taskar ,  Aleksey Yekimov

    发明人： Vishal Chhabra ,  Rameshwar Nath Bhargava ,  Dennis Gallagher ,  Samuel P. Herko ,  Bharati S. Kulkarni ,  Nikhil R. Taskar ,  Aleksey Yekimov

    IPC分类号： G01T120

    CPC分类号： G21K4/00 ,  G01T1/20 ,  G01T1/2921 ,  G21K2004/06 ,  G21K2004/12 ,  H01J2231/50036 ,  H01J2231/5016 ,  Y10S977/89

    摘要： A microchannel phosphor screen for converting radiation, such as X-rays, into visible light. The screen includes a planar surface, which can be formed from glass, silicon or metal, which has etched therein a multiplicity of closely spaced microchannels having diameters of the order of 40 microns or less. Deposited within each of the microchannels is a multiplicity of phosphors which emit light when acted upon by radiation. The dimensions of the microchannel and the phosphors and the relationship between the microchannels and the phosphors is optimized so that the light output compares favorably with lower resolution non microchannel based scintillation screens. A photomultiplier can be integrated with the X-ray detector so as to provide an enhanced output for use with low level X-ray of for cine or fluoroscopy applications.

    摘要翻译： 用于将诸如X射线的辐射转换成可见光的微通道荧光屏。 屏幕包括可以由玻璃，硅或金属形成的平坦表面，其在其中蚀刻了许多直径为40微米或更小的直径的紧密间隔的微通道。 沉积在每个微通道内的是在辐射作用时发光的多种荧光体。 微通道和磷光体的尺寸以及微通道和荧光体之间的关系被优化，使得光输出与较低分辨率的非微通道闪烁屏相比较。 光电倍增管可与X射线检测器集成，以提供增强的输出，用于电影或荧光透视应用的低电平X射线。

    Microchannel high resolution x-ray sensor having an integrated photomultiplier
    5.
    发明授权
    Microchannel high resolution x-ray sensor having an integrated photomultiplier 失效
    具有集成光电倍增管的微通道高分辨率x射线传感器

    公开(公告)号：US06452184B1

    公开(公告)日：2002-09-17

    申请号：US09385995

    申请日：1999-08-30

    申请人： Nikhil R. Taskar ,  John Victor D. Veliadis ,  Vishal Chhabra ,  Bharail Kulkarni ,  Neeta Pandit ,  Rameshwar Nath Bhargava ,  Roger Delano

    发明人： Nikhil R. Taskar ,  John Victor D. Veliadis ,  Vishal Chhabra ,  Bharail Kulkarni ,  Neeta Pandit ,  Rameshwar Nath Bhargava ,  Roger Delano

    IPC分类号： G01T120

    CPC分类号： G01T1/20 ,  G21K2004/06 ,  G21K2004/12

    摘要： A composite phosphor screen for converting radiation, such as X-rays, into visible light. The screen includes a planar surface, which can be formed from glass, silicon or metal, which has etched therein a multiplicity of closely spaced microchannels having diameters of the order of 10 microns or less. Deposited within each of the microchannels is a multiplicity of phosphors which emit light when acted upon by radiation. A photomultiplier, which may be microchannel based, is integrated with the X-ray detector so as to provide an enhanced output for use with low level X-ray of for cine or fluoroscopy applications. The walls of the microchannels and/or the substrate surfaces include dielectric stack based light reflective coatings.

    摘要翻译： 用于将诸如X射线的辐射转换成可见光的复合荧光屏。 屏幕包括可以由玻璃，硅或金属形成的平坦表面，其在其中蚀刻了具有大约10微米或更小的直径的多个紧密间隔的微通道。 沉积在每个微通道内的是在辐射作用时发光的多种荧光体。 可以将基于微通道的光电倍增管与X射线检测器集成，以提供用于电影或荧光透视应用的低水平X射线的增强输出。 微通道和/或衬底表面的壁包括基于电介质叠层的光反射涂层。

    Method of producing epitaxial layers of II-VI semiconductors with high acceptor concentrations
    8.
    发明授权
    Method of producing epitaxial layers of II-VI semiconductors with high acceptor concentrations 失效
    制备具有高受主浓度的II-VI半导体外延层的方法

    公开(公告)号：US5227328A

    公开(公告)日：1993-07-13

    申请号：US851452

    申请日：1992-03-16

    申请人： Babar A. Khan ,  Nikhil R. Taskar

    发明人： Babar A. Khan ,  Nikhil R. Taskar

    IPC分类号： H01L21/38

    CPC分类号： H01L21/38 ,  Y10S148/064 ,  Y10S438/902

    摘要： Epitaxial layers of II-VI semiconductors in-situ doped with high concentrations of a stable acceptor-type impurity and capped with a diffusion-limiting layer, when subjected to a rapid thermal anneal at a temperature between 700 and 950 degrees C., exhibit a high conversion of the impurities to acceptors, sufficient to render the layers p-type.

    摘要翻译： 原位掺杂高浓度稳定受主型杂质并用扩散限制层封端的II-VI半导体的外延层当在700和950摄氏度之间的温度下进行快速热退火时，表现出 杂质转化为受体的高转化率，足以使层p型。

    Nanocomposite photonic structures for solid state lighting
    9.
    发明授权
    Nanocomposite photonic structures for solid state lighting 失效
    固态照明的纳米复合光子结构

    公开(公告)号：US07259400B1

    公开(公告)日：2007-08-21

    申请号：US10842399

    申请日：2004-05-10

    申请人： Nikhil R. Taskar

    发明人： Nikhil R. Taskar

    IPC分类号： H01L33/00

    CPC分类号： H01L33/502 ,  H01L33/44 ,  H01L33/54

    摘要： A photonic structure for “white” light generation by phosphors under the excitation of a LED. The photonic structure mounts the LED and an optically transparent nanocomposite matrix having dispersed therein phosphors which will emit light under the excitation of the radiation of the LED. The phosphors dispersed in the matrix may be nanocrystalline, or larger sized with the addition of non light emitting, non light scattering nanoparticles dispersed within the matrix material so as to match the index of refraction of the matrix material to that of the phosphors. The nanocomposite matrix material may be readily formed by molding and formed into a variety of shapes including lenses for focusing the emitted light. A large number of the photonic structures may be arranged on a substrate to provide even illumination or other purposes.

    摘要翻译： 在LED的激发下由磷光体产生“白”光的光子结构。 光子结构安装LED和具有分散在其中的荧光体的光学透明纳米复合物基体，其将在LED的辐射的激发下发光。 分散在基质中的磷光体可以是纳米晶体，或者通过添加分散在基质材料内的非发光的非光散射纳米粒子的尺寸，以使基质材料的折射率与荧光体的折射率相匹配。 纳米复合材料基体材料可以容易地通过模塑形成并形成为包括用于聚焦发射光的透镜的各种形状。 大量的光子结构可以被布置在基板上以提供均匀的照明或其它目的。

    X-ray imaging system incorporating pixelated X-ray source and synchronized detector
    10.
    发明授权
    X-ray imaging system incorporating pixelated X-ray source and synchronized detector 失效
    包含像素化X射线源和同步检测器的X射线成像系统

    公开(公告)号：US06674837B1

    公开(公告)日：2004-01-06

    申请号：US10172704

    申请日：2002-06-14

    申请人： Nikhil R. Taskar ,  Rameshwar Nath Bhargava ,  Paul J. Patt

    发明人： Nikhil R. Taskar ,  Rameshwar Nath Bhargava ,  Paul J. Patt

    IPC分类号： H01J3500

    CPC分类号： A61B6/542 ,  A61B6/00 ,  A61B6/4028 ,  A61B6/4216 ,  A61B6/482 ,  G01T1/2928 ,  H01J2235/068 ,  Y10S977/928

    摘要： An X-ray imaging system utilizing a pixelated X-ray source and a X-ray imaging detector operated synchronously. The imaging system may be used in industrial and medical applications. The X-ray source and X-ray detector are synchronized such that a corresponding area of the X-ray detector is activated when the corresponding area of the X-ray source is emitting X-rays. Synchronized and adaptive emission and detection of the X-rays results in scatter rejection, improved image quality, and optimum exposure and dose reduction.

    摘要翻译： 使用像素化X射线源的X射线成像系统和同步运行的X射线成像检测器。 成像系统可用于工业和医疗应用。 X射线源和X射线检测器被同步，使得当X射线源的相应区域发射X射线时，X射线检测器的相应区域被激活。 X射线的同步和自适应发射和检测导致散射抑制，改善的图像质量以及最佳的曝光和剂量降低。