Nonlinear optical element
    5.
    发明授权
    Nonlinear optical element 失效
    非线性光学元件

    公开(公告)号:US5322760A

    公开(公告)日:1994-06-21

    申请号:US800427

    申请日:1991-11-29

    摘要: A nonlinear optical element comprising a tetraazaporphyrin compound represented by the formula (I): ##STR1## This nonlinear optical element is excellent in that it is improved over low switching speed of the conventional inorganic materials and over small nonlinearity and poor chemical and physical stability and workability of the conventional organic materials.

    摘要翻译: 包含由式(I)表示的四氮杂卟啉化合物的非线性光学元件:优于常规无机材料的低切换速度和小的非线性以及常规有机材料的较小的化学和物理稳定性和可加工性的改进。

    Liquid crystal display device and phase plate therefor
    6.
    发明授权
    Liquid crystal display device and phase plate therefor 失效
    液晶显示装置及其相位板

    公开(公告)号:US5220447A

    公开(公告)日:1993-06-15

    申请号:US494551

    申请日:1990-03-16

    摘要: A liquid crystal display device comprising: a liquid crystal display element formed by holding, between two substrates at least one of which has a light-permeable electrode, a liquid crystal layer in which liquid crystal molecules of a nematic liquid crystal having positive dielectric anisotropy and containing an optically active substance has a helical axis perpendicular to the substrates between the substrates and are helically oriented, and the liquid crystal molecules between the substrates have a twist angle of 180 to 270 degrees, and a phase plate formed by stacking water surface development films of an organic polymer with changing the orientation axes thereof at a constant angle, wherein the contrast ratio, a ratio between brightness in white display and brightness in black display, is remarkably excellent over that of a device obtained by stacking plastic films, and the transmissivity, a quotient of background brightness and light source brightness, is equivalent to that of a conventional double layer structure liquid crystal display device.

    摘要翻译: 一种液晶显示装置,包括:液晶显示元件,其通过在其中至少一个具有透光性电极的两个基板之间保持其液晶层,其中具有正介电各向异性的向列型液晶的液晶分子和 含有光学活性物质的螺旋轴具有垂直于基板之间的基板的螺旋轴并且被螺旋取向,并且基板之间的液晶分子具有180至270度的扭曲角度,并且通过将水表面显影膜 的有机聚合物以恒定角度改变其取向轴,其中对比度,白色显示中的亮度与黑色显示中的亮度之间的比例,显着优于通过堆叠塑料膜获得的装置的透射率 ,背景亮度和光源亮度的商相当于a 常规双层结构液晶显示装置。

    Liquid crystal display device
    7.
    发明授权
    Liquid crystal display device 失效
    液晶显示装置

    公开(公告)号:US4733949A

    公开(公告)日:1988-03-29

    申请号:US808255

    申请日:1985-12-12

    CPC分类号: C09K19/58

    摘要: In a liquid crystal display device produced by forming an orientation controlling film on each surface of upper and lower substrates having an electrode, placing a liquid crystal composition between said substrates, and then sealing the periphery of the substrate, the response times, particularly those at low temperatures can be reduced by using, as the aforesaid liquid crystal composition, a liquid crystal composition which is obtained by adding a material having a glass transition temperature (T.sub.g) of -90.degree. C. or lower to a liquid crystal material base and has a T.sub.g of -82.degree. C. or lower.

    摘要翻译: 在通过在具有电极的上基板和下基板的每个表面上形成取向控制膜而制造的液晶显示装置中,在所述基板之间放置液晶组合物,然后密封基板的周边,响应时间,特别是 作为上述液晶组合物,可以通过使用玻璃化转变温度(Tg)为-90℃以下的材料向液晶材料基底添加而得到的液晶组合物,可以降低低温,并且具有 -82℃以下的Tg。

    Optical apparatus using ferroelectric liquid crystal and switching unit
for emitted light
    8.
    发明授权
    Optical apparatus using ferroelectric liquid crystal and switching unit for emitted light 失效
    使用铁电液晶的光学装置和用于发射光的开关单元

    公开(公告)号:US4634226A

    公开(公告)日:1987-01-06

    申请号:US597746

    申请日:1984-04-06

    CPC分类号: G02F1/13306 G02F1/141

    摘要: An optical apparatus comprises an optical device having an optically functional material sandwiched between a pair of substrates with electrodes formed on opposing surfaces. The optically functional material has such a characteristic that intensity of light issuing from the optical device changes asymmetrically in response to inversion of the polarity of an applied external field. Pulse voltages of one polarity for determining the intensity of the issuing light and pulse voltages of an opposite polarity are applied from a source at a predetermined period so that an average voltage is zeroed within the predetermied period. The issuing light intensity under the application of the pulse voltages of one polarity and the issuing light intensity under the application of the other pulse voltages are selected or changed by a switching unit.

    摘要翻译: 光学装置包括光学装置,该光学装置具有夹在一对基板之间的光学功能材料,其中电极形成在相对的表面上。 光学功能材料具有这样的特征,即,从光学装置发出的光的强度响应于所施加的外部场的极性的反转而不对称地改变。 用于确定发光的强度的一个极性的脉冲电压和相反极性的脉冲电压以预定周期从源施加,使得在预先设定的周期内平均电压为零。 在施加一个极性的脉冲电压下的发光强度和施加其它脉冲电压的发光强度由切换单元选择或改变。

    One-component magnetic developer powder for developing electrostatic
latent image and method of making same
    10.
    发明授权
    One-component magnetic developer powder for developing electrostatic latent image and method of making same 失效
    用于显影静电潜像的单组分磁性显影剂粉末及其制备方法

    公开(公告)号:US4189390A

    公开(公告)日:1980-02-19

    申请号:US846890

    申请日:1977-10-31

    IPC分类号: G03G9/08 G03G9/083 G03G9/14

    摘要: A one-component magnetic developer powder for developing an electrostatic latent image formed according to an electrophotographic process comprising non-agglomerative essentially spherical members consisting essentially of plastics binder, magnetic particles and first electric conductive particles dispersed therein, and second electric conductive particles embedded on a spherical surface of the member, the resistivity of the surface layer of the powder being less than that of the inner portion.The developer powder according to the present invention has a good electrical uniformity and the flowability of the developer powder is very good. Productivity of the same is also very good.

    摘要翻译: 用于显影根据电子照相方法形成的静电潜像的单组分磁性显影剂粉末,其包含基本上由塑料粘合剂,磁性颗粒和分散在其中的第一导电颗粒组成的非聚集的基本上为球形的构件,以及嵌入在其中的第二导电颗粒 该部件的球形表面,粉末的表面层的电阻率小于内部部分的电阻率。 根据本发明的显影剂粉末具有良好的电均匀性,并且显影剂粉末的流动性非常好。 同样的生产力也很好。