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73 条记录 (耗时 0.031 秒)

    Method of making an optically nonlinear switched optical device and related devices
    42.
    发明授权
    Method of making an optically nonlinear switched optical device and related devices 失效
    制造光学非线性开关光学器件及相关器件的方法

    公开(公告)号：US5452123A

    公开(公告)日：1995-09-19

    申请号：US999487

    申请日：1992-12-30

    申请人： Sanford A. Asher ,  Song-Yuan Chang ,  Seshadri Jagannathan ,  Rasu Kesavamoorthy ,  Guisheng Pan

    发明人： Sanford A. Asher ,  Song-Yuan Chang ,  Seshadri Jagannathan ,  Rasu Kesavamoorthy ,  Guisheng Pan

    IPC分类号： G02B6/122 ,  G02F1/35 ,  G02B26/00

    CPC分类号： B82Y20/00 ,  G02B6/1225 ,  G02F1/3511

    摘要： Methods for making a nonlinear optical device and related devices are dissed. The method includes creating an ordered dispersion of charged particles in a surrounding medium. The charged particles and the surrounding medium are chosen such that they initially have identical refractive indices. In accordance with one aspect of the invention, cadmium sulfide inclusions are added to at least one of (a) the particles or (b) the medium. The cadmium sulfide inclusions have a highly nonlinear refractive index. The inclusions are optically nonlinear and upon high intensity radiation the refractive index of the particles change. This change in the refractive index occurs on the order of nanoseconds. In accordance with another aspect of the invention, a nonfluorescent dye is incorporated into at least one of (a) the particles or (b) the medium. The dye is photoabsorptive. Upon being impinged with high intensity radiation, the dye absorbs photons and heats the surrounding particles. This temperature increase causes a change in the refractive indices of the particles or medium. When the particle or medium refractive index is altered from that of the medium or particle the array diffracts light and prevents transmission of a specific wavelength. In accordance with yet another aspect of the invention, photorefractive materials such as lithium niobate or barium titanate substances can be used to induce the required optical nonlinearity. Related devices are also disclosed which exhibit high speed optical switching properties. The device may be employed advantageously in an optical computer or optical limiter.

    摘要翻译： 公开了制造非线性光学器件和相关器件的方法。 该方法包括在周围介质中产生带电粒子的有序分散体。 选择带电粒子和周围介质使得它们最初具有相同的折射率。 根据本发明的一个方面，向（a）颗粒或（b）介质中的至少一种添加硫化镉夹杂物。 硫化镉夹杂物具有高度非线性折射率。 夹杂物是光学非线性的，并且在高强度辐射下，颗粒的折射率改变。 折射率的这种变化发生在纳秒级。 根据本发明的另一方面，将非荧光染料掺入（a）颗粒或（b）介质中的至少一种中。 染料是光吸收性的。 当被高强度辐射照射时，染料吸收光子并加热周围的颗粒。 该温度升高导致颗粒或介质的折射率的变化。 当颗粒或介质折射率与介质或颗粒的粒子或介质折射率相比改变时，阵列衍射光并防止特定波长的透射。 根据本发明的另一方面，可以使用诸如铌酸锂或钛酸钡物质的光折射材料来诱导所需的光学非线性。 还公开了展现高速光学开关性能的相关装置。 该装置可以有利地用于光学计算机或光学限制器中。

    Storage phosphor panel with overcoat comprising dye
    47.
    发明授权
    Storage phosphor panel with overcoat comprising dye 有权
    存储磷光体面板，其中包含染料

    公开(公告)号：US08618512B2

    公开(公告)日：2013-12-31

    申请号：US13170648

    申请日：2011-06-28

    申请人： Seshadri Jagannathan ,  Marcus S. Bermel ,  Daniel M. Leusch

    发明人： Seshadri Jagannathan ,  Marcus S. Bermel ,  Daniel M. Leusch

    IPC分类号： H05B33/00

    CPC分类号： G21K4/00 ,  G21K2004/06

    摘要： A storage phosphor screen including a substrate; a phosphor layer disposed over the substrate; and an overcoat layer disposed over the phosphor layer, wherein the overcoat layer comprises at least one organic solvent-soluble polymer and at least one light absorbing colorant, and wherein the light absorbing colorant is dispersed within the organic solvent-soluble polymer. Also disclosed is a method of preparing a storage phosphor screen including providing a substrate; providing a phosphor solution comprising a solvent, at least one stimulable phosphor, and a binder; providing an overcoat solution comprising a solvent, at least one organic solvent-soluble polymer and at least one light absorbing colorant; forming a phosphor layer over a surface of the substrate with the phosphor solution; and forming an overcoat layer over the phosphor layer with the overcoat solution, wherein the light absorbing colorant is dispersed within the overcoat layer.

    摘要翻译： 一种存储荧光屏，包括基板; 设置在所述基板上的荧光体层; 以及设置在所述荧光体层上的外涂层，其中所述外涂层包含至少一种有机溶剂可溶性聚合物和至少一种光吸收着色剂，并且其中所述光吸收着色剂分散在所述有机溶剂可溶性聚合物中。 还公开了一种制备包括提供衬底的存储荧光屏的方法; 提供包含溶剂，至少一种可刺激的磷光体和粘合剂的磷光体溶液; 提供包含溶剂，至少一种有机溶剂可溶性聚合物和至少一种光吸收着色剂的外涂层溶液; 用所述荧光体溶液在所述基板的表面上形成荧光体层; 以及在所述外涂层溶液上在所述荧光体层上形成外涂层，其中所述光吸收着色剂分散在所述外涂层内。

    DIGITAL RADIOGRAPHIC DETECTOR WITH BONDED PHOSPHOR LAYER
    49.
    发明申请
    DIGITAL RADIOGRAPHIC DETECTOR WITH BONDED PHOSPHOR LAYER 有权
    具有粘结磷光体层的数字放射性检测器

    公开(公告)号：US20110133093A1

    公开(公告)日：2011-06-09

    申请号：US12862986

    申请日：2010-08-25

    申请人： Seshadri Jagannathan ,  Marcia K. Hansen

    发明人： Seshadri Jagannathan ,  Marcia K. Hansen

    IPC分类号： G01T1/20

    CPC分类号： G01T1/20 ,  G01T1/2018 ,  G21K4/00

    摘要： A digital radiographic detector having a radiation sensing element with a particulate material dispersed within a binder composition, wherein the binder composition includes a pressure-sensitive adhesive, wherein the particulate material, upon receiving radiation of a first energy level, is excitable to emit radiation of a second energy level, either spontaneously or in response to a stimulating energy of a third energy level. There is an array of photosensors, each photosensor in the array energizable to provide an output signal indicative of the level of emitted radiation of the second energy level that is received. The radiation sensing element bonds directly to, and in optical contact with, either the array of photosensors or an array of optical fibers that guide light to the array of photosensors.

    摘要翻译： 一种具有分散在粘合剂组合物中的具有颗粒材料的辐射感测元件的数字放射线检测器，其中所述粘合剂组合物包括压敏粘合剂，其中所述颗粒材料在接收到第一能级的辐射时是可激发的，以发射 第二能量水平，自发地或响应于第三能级的刺激能量。 存在一组光电传感器，阵列中的每个光电传感器可激发以提供指示所接收的第二能级的发射辐射水平的输出信号。 辐射感测元件直接接合光导体阵列或将光引导到光电传感器阵列的光导阵列或光学接触光学接触。

    POLYMER COMPOSITE
    50.
    发明申请
    POLYMER COMPOSITE 有权
    聚合物复合材料

    公开(公告)号：US20080181969A1

    公开(公告)日：2008-07-31

    申请号：US11669830

    申请日：2007-01-31

    申请人： Thomas N. Blanton ,  Narasimharao Dontula ,  Seshadri Jagannathan ,  Kevin L. Bishop ,  David W. Sandford ,  Craig L. Barnes

    发明人： Thomas N. Blanton ,  Narasimharao Dontula ,  Seshadri Jagannathan ,  Kevin L. Bishop ,  David W. Sandford ,  Craig L. Barnes

    IPC分类号： A61K33/38 ,  A61P31/00

    CPC分类号： C08K5/375 ,  C08K3/015 ,  C08K3/10 ,  C08K3/105 ,  C08K3/30 ,  C08K5/1345

    摘要： A polymer composite comprising a thermoplastic polymer compounded with a phenolic antioxidant, an organo-disulfide antioxidant, and a silver-based antimicrobial agent. The specified combination of antioxidant stabilizers is superior in inhibiting undesirable discoloration of thermoplastic polymers in the presence of compounded silver-based antimicrobial agents. A process of preparing such a composite, comprising compounding the phenolic antioxidant and organo-disulfide antioxidant with the thermoplastic polymer prior to compounding the silver-based antimicrobial agent with the thermoplastic polymer.

    摘要翻译： 一种聚合物复合材料，其包含与酚类抗氧化剂混合的热塑性聚合物，有机二硫化物抗氧化剂和银基抗微生物剂。 抗氧化剂稳定剂的指定组合在抑制在复合银基抗菌剂存在下热塑性聚合物不期望的变色是优异的。 一种制备这种复合材料的方法，包括在将银基抗微生物剂与热塑性聚合物配混之前，将酚类抗氧化剂和有机二硫化物抗氧化剂与热塑性聚合物混合。