Fast Switchable Micro‐Lenticular Lens Arrays Using Highly Transparent Nano‐Polymer Dispersed Liquid Crystals,Advanced Materials Interfaces

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Fast Switchable Micro‐Lenticular Lens Arrays Using Highly Transparent Nano‐Polymer Dispersed Liquid Crystals
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2019-07-26 , DOI: 10.1002/admi.201900841
Srinivas Pagidi ₁ , Ramesh Manda ₁ , Surjya Sarathi Bhattacharyya ₂ , Sung Guk Lee ₁ , Seong Min Song ₁ , Young Jin Lim ₁ , Joong Hee Lee ₁ , Seung Hee Lee _{1,

3}

Affiliation

A polarization‐dependent micro‐lenticular lens array (MLA) based on phase modulation of the nanostructured polymer dispersed liquid crystal (nano‐PDLC) is proposed. The transparent and optically isotropic composite is formed by photo‐polymerization induced phase separation of the LC and pre‐polymer mixture. The gradient field is generated by interdigitated electrodes and the LCs in nanosized droplets in nano‐PDLC orient along the field direction, resulting in field‐induced birefringence from the optically isotropic phase. Consequently, the MLAs are formed at the focal plane, in which its measured focal length is 22 µm at 50 V_rms. Besides, the position of focused beam in MLA device can be tuned depending on the polarization direction of an incident beam. The MLA device can realize a 3D image when the polarized 2D image arrays encounter the microlens. The proposed MLA device can pave the way toward upcoming fast switchable 2D/3D display device applications with a very fast switching time of 3.8 ms.

中文翻译：

使用高度透明的纳米聚合物分散液晶快速切换微透镜透镜阵列

提出了一种基于纳米结构的聚合物分散液晶（nano-PDLC）的相位调制的偏振相关微凸透镜阵列（MLA）。透明且光学各向同性的复合材料是由光聚合引起的液相色谱和预聚物混合物的相分离形成的。梯度场是由指状电极和纳米PDLC中的纳米液滴中的LC沿场方向定向生成的，从而导致了光学各向同性场的场致双折射。因此，MLA形成在焦平面上，其中在50 V _rms下测得的焦距为22 µm。此外，可以根据入射光束的偏振方向来调整MLA设备中聚焦光束的位置。当偏振的2D图像阵列遇到微透镜时，MLA设备可以实现3D图像。拟议的MLA设备可以以3.8 ms的快速切换时间为即将到来的快速可切换2D / 3D显示设备应用铺平道路。

更新日期：2019-07-26

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