公开(公告)号：US6094246A

公开(公告)日：2000-07-25

申请号：US003567

申请日：1998-01-06

申请人： Charles Wong ,  Yen-Chen Chen ,  Kuang-Yi Wu ,  Jian-Yu Liu

发明人： Charles Wong ,  Yen-Chen Chen ,  Kuang-Yi Wu ,  Jian-Yu Liu

IPC分类号： G02F1/137 ,  G02F1/13 ,  G02F1/1337 ,  G02F1/139 ,  G02F1/31 ,  G02F1/1335 ,  C09K19/02

CPC分类号： G02F1/31 ,  G02F1/1396 ,  G02F2001/1398

摘要： A twisted nematic liquid crystal-based electro-optic modulator with a twist angle between 0.degree. and 90.degree., and preferably between 50.degree. and 80.degree. is provided. The modulator provides a relatively rapid switching time such as less than about 50 milliseconds, and provides relatively large extinction ratios, such as greater than -25 dB. Preferably the liquid crystal entrance director differs from the polarization direction by a beta angle of about 15.degree..

摘要翻译： 提供扭转角度在0°至90°之间，优选在50°至80°之间的扭转向列型液晶型电光调制器。 调制器提供相对较快的切换时间，例如小于约50毫秒，并提供相对较大的消光比，例如大于-25dB。 优选地，液晶入口导向器与偏振方向不同约为15度的β角。