スリット電極型液晶シリンドリカルレンズアレイによる配光特性と高速応答化

抄録

Liquid-crystal cylindrical-lens-array (LC-CLA) having two pairs of slit-patterned electrodes was studied as a device to control light distribution properties. The LC-CLA has a pair of separated two circuit to drive independently, that can work as light deflection and diffusion. In the experiment using LED light with stacking two LC-CLA (each LC thickness: 80um), the light deflection angle of 26 degrees were obtained by same driving condition for both. While, the diffusion state of ± 26 degrees were obtained by driving in opposite direction. By the conventional step switching method, rising time is 7 seconds and recovery time is 13 seconds. We succeeded to make those response times less than one-tenth, introducing over-drive-pulse and reset-pulse at switching of turn on and off, respectively.