Materials, Photonic Devices, and Sensors

Liquid crystal lens with a concave polyimide layer

[+] Author Affiliations
Zuowei Zhou, Xiaolong Li, Hongwen Ren

Chonbuk National University, BK Plus Haptic Polymer Composite Research Team, Department of Polymer Nano Science and Technology, Jeonju, Jeonbuk, Republic of Korea

Opt. Eng. 56(7), 077102 (Jul 06, 2017). doi:10.1117/1.OE.56.7.077102
History: Received May 3, 2017; Accepted June 19, 2017
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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 Vrms. Our LC lens has no threshold voltage, and the fabrication procedure is relatively simple.

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© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Zuowei Zhou ; Xiaolong Li and Hongwen Ren
"Liquid crystal lens with a concave polyimide layer", Opt. Eng. 56(7), 077102 (Jul 06, 2017). ; http://dx.doi.org/10.1117/1.OE.56.7.077102


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