专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明授权

US4609256A Liquid crystal optical device 失效
标题翻译：液晶光学器件
公开(公告)号：US4609256A
公开(公告)日：1986-09-02
申请号：US401272
申请日：1982-07-23
申请人： Haruo Nakamura
发明人： Haruo Nakamura
IPC分类号： B41J2/445 , G02F1/133 , G02F1/1335 , G02F1/137 , G02F1/139 , G06K15/12 , G09G3/18 , G09G3/36 , G02F1/13 , C09K19/20 , C09K19/30
CPC分类号： G09G3/3622 , C09K19/0208 , C09K19/2021 , G02F1/1392 , G02F1/1397 , G06K15/1252 , G09G3/3681 , G09G3/3692
摘要： A liquid crystal optical device having improved dielectric relaxation at low frequency is provided. The liquid crystal optical device includes a liquid crystal panel having an optically active nematic liquid crystal composition with a dielectric anisotropy which becomes zero at a crossing frequency ("f.sub.c ") of 100 KHz or less at atmospheric temperatures and is positive at frequencies lower than f.sub.c ("f.sub.l ") and negative at frequencies higher than f.sub.c ("f.sub.h "). The interior surfaces of the substrates in the liquid crystal panel haven been oriented so that the liquid crystal molecules adjacent to the surfaces are oriented parallel to the directions of orientation. A polarizer is disposed on each outer surface of the panel with the axis of polarization substantially orthogonal to each other. The axis of polarization are disposed at a position of .+-.45.degree. to the bisector of the two directions of orientation on the interior surfaces of the substrate. This construction results in improved light transmittence and response speed.
摘要翻译：提供了一种在低频下具有改善的介电弛豫的液晶光学器件。液晶光学器件包括具有介电各向异性的光学活性向列型液晶组合物的液晶面板，其在大气温度下的交叉频率（“fc”）为100KHz以下为零，并且在低于fc的频率下为正（“fl”），而在高于fc（“fh”）的频率下为负。液晶面板中的基板的内表面被定向成使得与表面相邻的液晶分子与取向方向平行。偏振器设置在面板的每个外表面上，其偏振轴基本上彼此正交。偏振轴位于与衬底内表面上的两个取向方向的平分线+/- 45°的位置。这种结构提高了光透射和响应速度。

32. 发明授权

US4386836A Electro-photographic printer 失效
标题翻译：电子照相打印机
公开(公告)号：US4386836A
公开(公告)日：1983-06-07
申请号：US220484
申请日：1980-12-29
申请人： Kenji Aoki , Haruo Nakamura , Teiji Miura , Mitsuo Nagata
发明人： Kenji Aoki , Haruo Nakamura , Teiji Miura , Mitsuo Nagata
IPC分类号： F02B75/02 , G02F1/133 , G03G15/32 , G06K15/12 , G03G15/00
CPC分类号： G06K15/1252 , G02F1/133 , G03G15/326 , F02B2075/027
摘要： An electro-photographic printer utilizing a liquid crystal material which operates as a light valve. The liquid crystal material is sandwiched between two base plates which include electrodes which define a plurality of micro-shutters. A light source illuminates one side of the liquid crystal material. A driving circuit selectively applies driving signals to the electrodes for selectively opening and closing the micro-shutters to allow light from the light source to pass therethrough. A photo-sensitive drum on the other side of the liquid crystal receives the light transmitted through the liquid crystal to form characters. The characters are transmitted to a recording paper. The liquid crystal material, which has an inverted dielectric anisotropy on opposite sides of the critical frequency, is selectively driven by selectively applying two different frequency signals to the liquid crystal.
摘要翻译：利用作为光阀操作的液晶材料的电子照相打印机。液晶材料夹在包括限定多个微快门的电极的两个基板之间。光源照亮液晶材料的一侧。驱动电路选择性地向电极施加驱动信号，用于选择性地打开和关闭微快门以允许来自光源的光通过。液晶另一侧的感光鼓接收透过液晶的光线形成字符。这些字符被传送到记录纸。通过选择性地将两个不同的频率信号施加到液晶来选择性地驱动具有临界频率的相对侧上的反向介电各向异性的液晶材料。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式