利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

19 条记录 (耗时 0.026 秒)

    Switchable polymer-dispersed liquid crystal optical elements
    2.
    发明申请
    Switchable polymer-dispersed liquid crystal optical elements 失效
    可切换聚合物分散液晶光学元件

    公开(公告)号：US20060114533A1

    公开(公告)日：2006-06-01

    申请号：US11268584

    申请日：2005-11-08

    申请人： Richard Sutherland ,  William Hagan ,  William Kelly ,  Bob Epling

    发明人： Richard Sutherland ,  William Hagan ,  William Kelly ,  Bob Epling

    IPC分类号： G02B5/32 ,  G02B27/42

    CPC分类号： C09K19/544 ,  G02B5/32 ,  G02F1/1326 ,  G02F1/13342 ,  G02F1/31 ,  G02F2001/13712 ,  G02F2201/346 ,  G02F2203/05 ,  G02F2203/055 ,  G02F2203/585 ,  G03H1/02 ,  G03H2001/026 ,  G03H2001/0264 ,  G03H2001/2231 ,  G03H2001/2234 ,  G03H2260/12 ,  G03H2260/33

    摘要： Transmission and reflection type holograms may be formed utilizing a novel polymer-dispersed liquid crystal (PDLC) material and its unique switching characteristics to form optical elements. Applications for these switchable holograms include communications switches and switchable transmission, and reflection red, green, and blue lenses. The PDLC material of the present invention offers all of the features of holographic photopolymers with the added advantage that the hologram can be switched on and off with the application of an electric field. The material is a mixture of a polymerizable monomer and liquid crystal, along with other ingredients, including a photoinitiator dye. Upon irradiation, the liquid crystal separates as a distinct phase of nanometer-size droplets aligned in periodic channels forming the hologram. The material is called a holographic polymer-dispersed liquid crystal (H-PDLC).

    摘要翻译： 透射和反射型全息图可以利用新型聚合物分散液晶（PDLC）材料和其独特的开关特性来形成光学元件。 这些可切换全息图的应用包括通信开关和可切换传输以及反射红色，绿色和蓝色透镜。 本发明的PDLC材料提供了全息光聚合物的全部特征，附加的优点是可以通过施加电场来打开和关闭全息图。 该材料是可聚合单体和液晶的混合物，以及其它成分，包括光引发剂染料。 在照射时，液晶分离为在形成全息图的周期性通道中对齐的纳米尺寸液滴的不同相位。 该材料称为全息聚合物分散液晶（H-PDLC）。

    Switchable polymer-dispersed liquid crystal optical elements
    4.
    发明申请
    Switchable polymer-dispersed liquid crystal optical elements 有权

    公开(公告)号：US20060119916A1

    公开(公告)日：2006-06-08

    申请号：US11268582

    申请日：2005-11-08

    申请人： Richard Sutherland ,  Bill Hagan ,  William Kelly ,  Bob Epling

    发明人： Richard Sutherland ,  Bill Hagan ,  William Kelly ,  Bob Epling

    IPC分类号： G03H1/00

    CPC分类号： G02F1/13342 ,  G02B5/32 ,  G03H1/02 ,  G03H2001/026 ,  G03H2001/0264 ,  G03H2250/38

    摘要： Transmission and reflection type holograms may be formed utilizing a novel polymer-dispersed liquid crystal (PDLC) material and its unique switching characteristics to form optical elements. Applications for these switchable holograms include communications switches and switchable transmission, and reflection red, green, and blue lenses. The PDLC material of the present invention offers all of the features of holographic photopolymers with the added advantage that the hologram can be switched on and off with the application of an electric field. The material is a mixture of a polymerizable monomer and liquid crystal, along with other ingredients, including a photoinitiator dye. Upon irradiation, the liquid crystal separates as a distinct phase of nanometer-size droplets aligned in periodic channels forming the hologram. The material is called a holographic polymer-dispersed liquid crystal (H-PDLC).

    Electrically switchable polymer-dispersed liquid crystal materials including switchable optical couplers and reconfigurable optical interconnects
    8.
    发明申请
    Electrically switchable polymer-dispersed liquid crystal materials including switchable optical couplers and reconfigurable optical interconnects 有权
    包括可切换光耦合器和可重新配置的光互连的电可切换聚合物分散液晶材料

    公开(公告)号：US20050007639A1

    公开(公告)日：2005-01-13

    申请号：US10916430

    申请日：2004-08-12

    申请人： Lalgudi Natarajan ,  Richard Sutherland ,  Vince Tondiglia ,  Timothy Bunning ,  Bob Epling ,  Donna Brandelik

    发明人： Lalgudi Natarajan ,  Richard Sutherland ,  Vince Tondiglia ,  Timothy Bunning ,  Bob Epling ,  Donna Brandelik

    IPC分类号： G02B5/32 ,  G02B6/34 ,  G02F1/1334 ,  G03H1/00 ,  C09K19/52 ,  G02F1/13 ,  G03H1/04

    CPC分类号： G03H1/0005 ,  G02B5/32 ,  G02B6/2713 ,  G02B6/2931 ,  G02B6/29311 ,  G02B6/29314 ,  G02B6/29395 ,  G02F1/13342 ,  G02F2201/305 ,  G03H1/02 ,  G03H1/0248 ,  G03H2001/026 ,  G03H2001/0264 ,  G03H2001/2615 ,  G03H2260/12 ,  G03H2260/33 ,  Y10T428/10

    摘要： A new photopolymerizable material allows single-step, fast recording of volume holograms with properties that can be electrically controlled. Polymer-dispersed liquid crystals (PDLCs) in accordance with the invention preferably comprise a homogeneous mixture of a nematic liquid crystal and a multifunctional pentaacrylate monomer in combination with photoinitiator, coinitiator and cross-linking agent. Optionally, a surfactant such as octancic acid may also be added. The PDLC material is exposed to coherent light to produce an interference pattern inside the material. Photopolymerization of the new PDLC material produces a hologram of clearly separated liquid crystal domains and cured polymer domains. Volume transmission gratings made with the new PDLC material can be electrically switched between nearly 100% diffraction efficiency and nearly 0% diffraction efficiency. By increasing the frequency of the switching voltage, switching voltages in the range of 50 Vrms can be achieved. The optional use of a surfactant allows low switching voltages at lower frequencies than without a surfactant. In an alternative embodiment, a PDLC material in accordance with the invention can be utilized to form reflection gratings, including switchable reflection gratings. In still further embodiments, a PDLC material in accordance with the invention can be used to form switchable subwavelength gratings. By further processing, static transmission, reflection, and subwavelength PDLC materials can be formed. In addition, PDLC materials in accordance with the present invention can be used to form switchable slanted transmission gratings suitable for switchable optical coupling and reconfigurable optical interconnects.

    摘要翻译： 新的可光聚合材料允许单步快速记录体积全息图，其性质可以被电控制。 根据本发明的聚合物分散液晶（PDLC）优选包含与光引发剂，共引发剂和交联剂组合的向列型液晶和多官能五丙烯酸酯单体的均匀混合物。 任选地，还可以加入表面活性剂如辛酸。 PDLC材料暴露于相干光以在材料内产生干涉图案。 新的PDLC材料的光聚合产生清晰分离的液晶畴和固化聚合物畴的全息图。 用新的PDLC材料制成的体积传输光栅可以在近100％的衍射效率和近0％的衍射效率之间电气切换。 通过提高开关电压的频率，可以实现在50Vrms范围内的开关电压。 表面活性剂的选择性使用允许低于没有表面活性剂的低频率的低开关电压。 在替代实施例中，根据本发明的PDLC材料可用于形成包括可切换反射光栅的反射光栅。 在另外的实施例中，根据本发明的PDLC材料可用于形成可切换的亚波长光栅。 通过进一步处理，可以形成静态透射，反射和亚波长的PDLC材料。 此外，根据本发明的PDLC材料可以用于形成适合于可切换光耦合和可重新配置的光互连的可转换的倾斜透射光栅。

    Switchable polymer-dispersed liquid crystal optical elements
    10.
    发明授权
    Switchable polymer-dispersed liquid crystal optical elements 有权
    可切换聚合物分散液晶光学元件

    公开(公告)号：US07256915B2

    公开(公告)日：2007-08-14

    申请号：US11268661

    申请日：2005-11-08

    申请人： Richard L. Sutherland ,  Bill Hagan ,  William Kelly ,  Bob Epling

    发明人： Richard L. Sutherland ,  Bill Hagan ,  William Kelly ,  Bob Epling

    IPC分类号： G03H1/00

    CPC分类号： C09K19/544 ,  G02B5/32 ,  G02F1/1326 ,  G02F1/13342 ,  G02F1/31 ,  G02F2001/13712 ,  G02F2201/346 ,  G02F2203/05 ,  G02F2203/055 ,  G02F2203/585 ,  G03H1/02 ,  G03H2001/026 ,  G03H2001/0264 ,  G03H2001/2231 ,  G03H2001/2234 ,  G03H2260/12 ,  G03H2260/33

    摘要： Transmission and reflection type holograms may be formed utilizing a novel polymer-dispersed liquid crystal (PDLC) material and its unique switching characteristics to form optical elements. Applications for these switchable holograms include communications switches and switchable transmission, and reflection red, green, and blue lenses. The PDLC material of the present invention offers all of the features of holographic photopolymers with the added advantage that the hologram can be switched on and off with the application of an electric field. The material is a mixture of a polymerizable monomer and liquid crystal, along with other ingredients, including a photoinitiator dye. Upon irradiation, the liquid crystal separates as a distinct phase of nanometer-size droplets aligned in periodic channels forming the hologram. The material is called a holographic polymer-dispersed liquid crystal (H-PDLC).

    摘要翻译： 透射和反射型全息图可以利用新型聚合物分散液晶（PDLC）材料和其独特的开关特性来形成光学元件。 这些可切换全息图的应用包括通信开关和可切换传输以及反射红色，绿色和蓝色透镜。 本发明的PDLC材料提供了全息光聚合物的全部特征，附加的优点是可以通过施加电场来打开和关闭全息图。 该材料是可聚合单体和液晶的混合物，以及其它成分，包括光引发剂染料。 在照射时，液晶分离为在形成全息图的周期性通道中对齐的纳米尺寸液滴的不同相位。 该材料称为全息聚合物分散液晶（H-PDLC）。