Electrically controlled hole-patterned tunable-focus lens with polymer dispersed liquid crystal doped with Ag nanoparticles

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• 作者：Daoping Li ; Jihong Zheng ; ^{jihongzheng@sina.com" class="auth_mail" title="E-mail the corresponding author} ; ^{jihongzheng2002@aliyun.com" class="auth_mail" title="E-mail the corresponding author} ; Kun Gui ; Kangni Wang ; Yanan Wang
• 关键词：PDLC lens ; Asymmetric electrode ; Electrically controlled tunable-focus
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：127
• 期：19
• 页码：7788-7793
• 全文大小：1198 K

文摘

In this study, we investigated the electrically controlled tunable-focus characteristics of a polymer dispersed liquid crystal (PDLC) lens doped with Ag nanoparticles (NPs). The design and simulation of a circular lens and cylindrical lens show that a good lens effect closely depends on the size of etched circular and rectangular holes. Our results show a good focusing effect for 0.5 and 1 mm diameter circular lenses and 1 × 5 mm and 0.5 × 2.5 mm cylindrical lenses. In addition, the measured focal length of the PDLC lens is consistent with the simulation results. The circular lens and cylindrical lens have good electrically controlled tunable-focus properties when the applied voltage is 100 V_rms and 80 V_rms, respectively. Moreover, incorporated Ag nanoparticles function to improve transmittance of the PDLC lens. The advantages of controlled flexibility, easy fabrication, and small size of such a PDLC lens have wide applications within imaging and three-dimensional displays.