Effect of liquid crystal concentration on electro-optical properties of polymer dispersed liquid crystal lens for smart electronic glasses with auto-shading and auto-focusing function
Effect of liquid crystal concentration on electro-optical properties of polymer dispersed liquid crystal lens for smart electronic glasses with auto-shading and auto-focusing function
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DOI：
10.1007/s13391-013-3223-y
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发表时间：
2014-05
影响因子：
2.4
通讯作者：
Jaeyong Kim;J. Han
中科院分区：
文献类型：
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作者：
Jaeyong Kim;J. Han
用预聚体(NOA65)和E7液晶的混合物制备了聚合物分散液晶透镜。在聚合诱导相分离过程中，通过紫外光固化聚合了聚合物分散液晶的混合物。测量并优化了聚合物分散液晶透镜器件的透过率、驱动电压、响应时间、对比度和透过率-电压线性区域的斜率等电光性能。聚合物分散液晶透镜的最佳浓度为40%的NOA65和60%的E7液晶浓度。这是首次将聚合物分散液晶透镜用于具有自动调光和/或自动对焦功能的智能电子眼镜。
Polymer dispersed liquid crystal lenses were prepared from a mixture of prepolymer (NOA 65) and E7 liquid crystal. The mixture of polymer dispersed liquid crystal was polymerized by ultraviolet (UV) curing in the polymerization induced phase separation process. With liquid crystal concentration, electro-optical properties of polymer dispersed liquid crystal lens devices including transmittance, driving voltage, response times, contrast ratio and slope of the linear region of the transmittance-voltage were measured and optimized for smart electronic glasses. The optimum concentration for polymer dispersed liquid crystal lens was NOA 65 of 40% and E7 liquid crystal concentration of 60%. This is the first report of the use of the polymer dispersed liquid crystal lens for smart electronic glasses with auto-shading and/or auto-focusing functions.