標題: A polarized bifocal switch based on liquid crystals operated electrically and optically
作者: Chen, Hung-Shan
Lin, Yi-Hsin
Chang, Chia-Ming
Wang, Yu-Jen
Srivastava, Abhishek Kumar
Sun, Jia Tong
Chigrinov, Vladimir Grigorievich
光電工程學系
Department of Photonics
公開日期: 28-Jan-2015
摘要: A polarized bifocal switch based on liquid crystals (LC) operated electrically and optically is demonstrated. The bifocal switch mainly consists of two parts: a LC layer as a polarization switch and two polymeric layers for modulation of polarization dependent spatial phase difference which results in a positive or a negative lensing effect. The orientations of the LC molecules in the polarization switch are manipulated either in electrically switching (ES) mode or optically rewritten (ORW) mode. The bifocal switch with an aperture size of 10mm exhibits two discrete lens powers (-1.39 Diopter and +0.7 Diopter) with different polarization states no matter in ES mode or in ORW mode. ORW mode is also a bistable mode. The related mechanism and electro-optical performance are discussed and demonstrated. Such a versatile optical switch is capable of not only switching between a positive lens power and a negative lens power, but also switching between two linear polarization states which can be useful in optical systems. The potential applications are for optical systems, wearable devices and ophthalmic lenses. (C) 2015 AIP Publishing LLC.
URI: http://dx.doi.org/10.1063/1.4906495
http://hdl.handle.net/11536/124366
ISSN: 0021-8979
DOI: 10.1063/1.4906495
期刊: JOURNAL OF APPLIED PHYSICS
Volume: 117
Appears in Collections:Articles