利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

58 条记录 (耗时 0.044 秒)

    Electrically switchable polymer liquid crystal and polymer birefringent flake in fluid host systems and optical devices utilizing same
    52.
    发明授权
    Electrically switchable polymer liquid crystal and polymer birefringent flake in fluid host systems and optical devices utilizing same 失效
    流体主机系统中的电可切换聚合物液晶和聚合物双折射薄片以及利用其的光学装置

    公开(公告)号：US06665042B1

    公开(公告)日：2003-12-16

    申请号：US09571805

    申请日：2000-05-16

    申请人： Kenneth L. Marshall ,  Tanya Z. Kosc ,  Stephen D. Jacobs ,  Sadeg M. Faris ,  Le Li

    发明人： Kenneth L. Marshall ,  Tanya Z. Kosc ,  Stephen D. Jacobs ,  Sadeg M. Faris ,  Le Li

    IPC分类号： C09K1952

    CPC分类号： G02F1/172 ,  G02F1/137

    摘要： Flakes or platelets of polymer liquid crystals (PLC) or other birefringent polymers (BP) suspended in a fluid host medium constitute a system that can function as the active element in an electrically switchable optical device when the suspension is either contained between a pair of rigid substrates bearing transparent conductive coatings or dispersed as microcapsules within the body of a flexible host polymer. Optical properties of these flake materials include large effective optical path length, different polarization states and high angular sensitivity in their selective reflection or birefringence. The flakes or platelets of these devices need only a 3-20° rotation about the normal to the cell surface to achieve switching characteristics obtainable with prior devices using particle rotation or translation.

    摘要翻译： 悬浮在流体宿主介质中的聚合物液晶（PLC）或其它双折射聚合物（BP）的片状物或血小板构成了当悬浮液被包含在一对刚性体之间时可以用作电气可切换光学装置中的有源元件的系统 带有透明导电涂层的基底或作为微胶囊分散在柔性主体聚合物体内。 这些薄片材料的光学特性在其选择反射或双折射中包括大的有效光程长度，不同的偏振状态和高的角灵敏度。 这些装置的薄片或血小板仅围绕细胞表面的法线仅需3-20°的旋转，以实现使用粒子旋转或平移的现有装置可获得的切换特性。

    Holographically-formed polymer dispersed liquid crystals with multiple gratings
    55.
    发明授权
    Holographically-formed polymer dispersed liquid crystals with multiple gratings 失效
    具有多个光栅的全息形成的聚合物分散液晶

    公开(公告)号：US06538775B1

    公开(公告)日：2003-03-25

    申请号：US09398964

    申请日：1999-09-16

    申请人： Christopher C. Bowley ,  Adam K. Fontecchio ,  Jaujeng Lin ,  Gregory P. Crawford ,  Sadeg M. Faris ,  Le Li

    发明人： Christopher C. Bowley ,  Adam K. Fontecchio ,  Jaujeng Lin ,  Gregory P. Crawford ,  Sadeg M. Faris ,  Le Li

    IPC分类号： G03H102

    CPC分类号： G03H1/28 ,  G02B5/203 ,  G02B5/32 ,  G02F1/13342 ,  G03H1/0236 ,  G03H1/0248 ,  G03H1/04 ,  G03H1/265 ,  G03H2001/2231 ,  G03H2223/12 ,  G03H2223/18 ,  G03H2260/12 ,  G03H2260/33

    摘要： A multicolored reflection liquid crystal display device includes a pair of substrates having a reflective holographic polymer dispersed liquid crystal (H-PDLC) film disposed therebetween. The H-PDLC film contains at least two different reflection gratings capable of reflecting two different wavelengths of light. A multicolored reflection H-PDLC is obtained by simultaneously illuminating a plurality of regions of a film comprised of a mixture of a liquid crystal and a photo-polymerizable monomer with a plurality of holographic light patterns capable of providing liquid crystal layers of different spacings so as to obtain different reflection gratings in each of the regions. A mask is placed between each of the laser light beams and the film to form a pattern of light and dark regions on the film. Each mask is positioned such that at least one light region of a first beam pair coincides with at least one dark region of a second beam pair within the film. A multiple grating liquid crystal display device including an H-PDLC film having a first region comprising liquid crystal and matrix polymer layers forming a transmission grating and a second region comprising liquid crystal and matrix polymer layers forming a reflection grating capable of reflecting a preselected wavelength of light also is described.

    摘要翻译： 多彩反射液晶显示装置包括一对基板，其具有设置在其间的反射全息聚合物分散液晶（H-PDLC）膜。 H-PDLC膜包含能够反射两种不同波长的光的至少两种不同的反射光栅。 通过同时用能够提供不同间隔的液晶层的多个全息光图案同时照射由液晶和可光聚合单体的混合物组成的膜的多个区域来获得多色反射H-PDLC，从而 以在每个区域中获得不同的反射光栅。 在每个激光束和膜之间放置掩模以在膜上形成光和暗区域的图案。 每个掩模被定位成使得第一光束对的至少一个光区与膜内的第二光束对的至少一个暗区重合。 一种多光栅液晶显示装置，包括具有包括液晶的第一区域和形成透射光栅的基质聚合物层的H-PDLC膜，以及包含液晶的第二区域和形成能够反射预选波长的反射光栅的基质聚合物层 光也被描述。

    Apparatus for producing multi-color images on substrates using dry multi-colored cholesteric liquid crystal (CLC) pigment materials
    57.
    发明授权
    Apparatus for producing multi-color images on substrates using dry multi-colored cholesteric liquid crystal (CLC) pigment materials 失效
    用于使用干多色胆固醇液晶（CLC）颜料材料在基板上产生多色图像的装置

    公开(公告)号：US06394595B1

    公开(公告)日：2002-05-28

    申请号：US09141981

    申请日：1998-08-28

    申请人： Yingqiu Jiang ,  Le Li ,  Sadeg Faris

    发明人： Yingqiu Jiang ,  Le Li ,  Sadeg Faris

    IPC分类号： B41J201

    CPC分类号： B41J2/01 ,  B05D3/12 ,  B05D5/063 ,  B05D5/065 ,  B05D5/067 ,  B41M5/0023 ,  B41M7/0027

    摘要： A computer-controlled system for producing a multi-color image on a substrate using multi-colored cholesteric liquid crystal (CLC) pigment materials made from CLC flakes tuned to predetermined bands of color. An image generator automatically generates an image specifying a pattern over which binder material is to be applied to a substrate by a binder material applicator. A plurality of CLC pigment applicators automatically apply patterns of different-color CLC pigment material to the pattern of binder material, which binds thereto as the binder material dries according to its drying characteristics. An output device is used to automatically return the substrate to a different one of CLC pigment applicators after each application of a pattern of different-color CLC pigment material to the pattern of binder material. The output device automatically repeats the return of the substrate to the CLC pigment applicators until all bands of color in the multi-color image are rendered.

    摘要翻译： 一种计算机控制系统，用于使用由CLC薄片制成的多色胆固醇液晶（CLC）颜料材料在基板上产生多色图像，该调色剂调整到预定的颜色带。 图像发生器通过粘合剂材料施加器自动生成指定粘合剂材料施加到基底的图案的图像。 多个CLC颜料涂布器自动地将不同颜色的CLC颜料的图案应用于粘合剂材料的图案，粘合剂材料根据其干燥特性而干燥。 在将不同颜色的CLC颜料材料的图案应用于粘合剂材料的图案之后，输出装置用于自动将基板返回到不同的CLC颜料涂布器。 输出装置自动重复将基板返回到CLC颜料施加器，直到渲染多色图像中的所有色彩带。

    Reflective film material having symmetrical reflection characteristics and method and apparatus for making the same
    58.
    发明授权
    Reflective film material having symmetrical reflection characteristics and method and apparatus for making the same 失效
    具有对称反射特性的反射膜材料及其制造方法和装置

    公开(公告)号：US06377325B2

    公开(公告)日：2002-04-23

    申请号：US08891877

    申请日：1997-07-09

    申请人： Sadeg M. Faris ,  Le Li

    发明人： Sadeg M. Faris ,  Le Li

    IPC分类号： G02F11335

    CPC分类号： G02F1/1335 ,  C09D5/36 ,  C09D13/00 ,  C09K19/00 ,  G02B5/3016

    摘要： Disclosed are novel reflective films having symmetrical reflection characteristics on the upper and lower surfaces thereof. Preferably, such films are made from cholesteric liquid crystal (CLC) material, wherein the pitch of the helices of the liquid crystal molecules therein varies along the thickness dimension (i.e. transverse to the surface) of the film. Depending on the final spiral structure of the materials utilized, the CLC circularly polarizing film materials reflect either left-handed or right-handed circularly polarized light. In a first illustrative embodiment, the CLC film has a laminated construction in order that both the upper and lower surfaces thereof have substantially the same reflection characteristics over its tuned reflection band. In second illustrative embodiment, the CLC film has a laminated construction in order that both the upper and lower surfaces thereof have substantially the same reflection characteristics over its broadband reflection band. By virtue of their circularly polarizing reflection characteristics, the CLC films of the present invention can be used to form polarization-encoded spatially multiplexed images (SMI) on radiation absorbing surfaces, coloring media with high brightness characteristics, CLC-based toner 2-D and 3-D xerographic printing processes, and the like.

    摘要翻译： 公开了在其上表面和下表面上具有对称反射特性的新型反射膜。 优选地，这种膜由胆甾型液晶（CLC）材料制成，其中其中的液晶分子的螺旋的间距沿膜的厚度尺寸（即横向于表面）变化。 根据所使用的材料的最终螺旋结构，CLC圆偏振膜材料反射左旋或右旋圆偏振光。 在第一示例性实施例中，CLC膜具有层叠结构，以使其上表面和下表面在其调谐反射带上具有基本相同的反射特性。 在第二示例性实施例中，CLC膜具有层叠结构，以便其上表面和下表面在其宽带反射带上具有基本相同的反射特性。 由于它们的圆偏振反射特性，本发明的CLC膜可用于在辐射吸收表面上形成偏振编码的空间多路复用图像（SMI），具有高亮度特性的着色介质，基于CLC的调色剂2-D和 3-D静电印刷工艺等。