Onaka Jessica, Iwase Takahiro, Fukui Marina, Koyama Daisuke, Matsukawa Mami
Opt Lett. 2021 Mar 1;46(5):1169-1172. doi: 10.1364/OL.414295.
A new type of ultrasonically controlled concave liquid crystal lens based on traveling waves (TWs) with a divided electrode structure and an appropriate driving scheme is proposed in this Letter. The lens uses an annular piezoelectric ceramic divided into four parts for four-phase driving and consists of a liquid crystal layer in a sandwich structure between two circular glass substrates. The lens configuration was simulated by finite element analysis using the Ansys software. Here we discuss the use of TWs to expand the lens aperture and clarify the lens' optical characteristics using a Shack-Hartmann wavefront sensor. The effective lens aperture using TWs was 4.4 mm, and the focal length was 3.8 m.
本文提出了一种新型的基于行波（TWs）的超声控制凹面液晶透镜，其具有分割电极结构和适当的驱动方案。该透镜使用环形压电陶瓷，分为四个部分进行四相驱动，由位于两个圆形玻璃基板之间的夹层结构中的液晶层组成。使用Ansys软件通过有限元分析对透镜结构进行了模拟。在这里，我们讨论了利用行波来扩大透镜孔径，并使用夏克-哈特曼波前传感器阐明了透镜的光学特性。使用行波的有效透镜孔径为4.4毫米，焦距为3.8米。
