| 摘要 |
Reflective liquid crystal light valves are disclosed. A liquid crystal cell is also disclosed comprising a transparent electrode, a reflective electrode, and a twisted nematic liquid crystal layer interposed therebetween. A first alignment layer with a first alignment direction disposed on the transparent electrode. A second alignment layer with a second alignment direction disposed on the reflective electrode, wherein a first included angle phi is between the first and second alignment directions. A polarizing device is disposed on the exterior of the transparent electrode to provide an incident beam having a polarization direction, wherein a second included angle beta is between the first alignment direction and the polarization direction. A relationship between the first included angle phi and the second included angle beta satisfies phi/2<beta<phi/2+30° or 90°+phi/2<beta<phi/2+120°.
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