发明名称 |
Reflection-type liquid crystal device with polarization of output light perpendicular to that of input light |
摘要 |
A reflection-type liquid crystal (LC) device having a twisted nematic (TN) LC layer that lets linearly-polarized incident light enter and become circularly-polarized at a reflecting surface, and then linearly polarizes it, after reflecting, with a plane of polarization that has been rotated 90 DEG from the incident light at an light output surface. The TN LC layer allows linearly-polarized incident light to enter at an angle to the molecular plane of light input of the twisted nematic LC, and to linearly polarize the light after reflection. The plane of polarization is rotated 90 DEG from the incident light at the light output surface. The TN LC layer also allows circularly-polarized incident light to enter and become linearly-polarized light at the reflecting surface. Circularly-polarized light after reflection may be rotated opposite the incident circularly-polarized light at the light output surface to provide for reverse on/off states.
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申请公布号 |
US5361151(A) |
申请公布日期 |
1994.11.01 |
申请号 |
US19930133827 |
申请日期 |
1993.10.07 |
申请人 |
SEIKO EPSON CORPORATION |
发明人 |
SONEHARA, TOMIO;OKUMURA, OSAMU |
分类号 |
G02F1/1335;G02F1/13363;G02F1/139;(IPC1-7):G02F1/133;G02F1/13 |
主分类号 |
G02F1/1335 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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