6 July 2017 Liquid crystal lens with a concave polyimide layer
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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.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Zuowei Zhou, Xiaolong Li, 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 . Submission: Received: 3 May 2017; Accepted: 19 June 2017
Received: 3 May 2017; Accepted: 19 June 2017; Published: 6 July 2017
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