Liquid crystal lens with a concave polyimide layer

Zuowei Zhou; Xiaolong Li; Hongwen Ren

doi:10.1117/1.OE.56.7.077102

6 July 2017 Liquid crystal lens with a concave polyimide layer

Zuowei Zhou, Xiaolong Li, Hongwen Ren

Author Affiliations +

Funded by: National Research Foundation of Korea (NRF), National Research Foundation of Korea, National Research Foundation (NRF) of Korea of the Ministry of Science, ICT, and Future Planning Nuclear R&D Program, Chonbuk National University

Optical Engineering, Vol. 56, Issue 7, 077102 (July 2017). https://doi.org/10.1117/1.OE.56.7.077102

Abstract

A tunable-focus liquid crystal (LC) lens is prepared. The orientation of the LC is controlled using a homeotropic polyimide (PI) layer and a homogeneous PI layer. The homeotropic PI layer has a concave shape. The LC in the concave space presents a hybrid alignment and has a convex shape. As a result, the LC has a lens character with the shortest focal length in the voltage-off state. The focal length can be tuned from 9 to 15 cm when an applied voltage is changed from 0 to 8 V_rms. Our LC lens has no threshold voltage, and the fabrication procedure is relatively simple.

Citation Download Citation

Zuowei Zhou, Xiaolong Li, and Hongwen Ren "Liquid crystal lens with a concave polyimide layer," Optical Engineering 56(7), 077102 (6 July 2017). https://doi.org/10.1117/1.OE.56.7.077102

Received: 3 May 2017; Accepted: 19 June 2017; Published: 6 July 2017

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