Title: An electrically tunable-focusing liquid crystal lens with a low voltage and simple electrodes
Authors: Lin, Hung-Chun
Lin, Yi-Hsin
Department of Photonics
Issue Date: 30-Jan-2012
Abstract: An electrically tunable focusing LC lens with a low voltage and simple planar electrodes is demonstrated. The inhomogeneous electric field of the LC lens without any hole-patterned-electrode is generated by using an embedded polymeric layer with a gradient distribution of dielectric constants (or relative permittivity). LC directors in the LC layer experience spatially inhomogeneous voltages even though a single voltage is applied to the planar electrodes. Such a LC lens has a low voltage (similar to 2.6 V-rms) and simple design of electrodes. The gradient distribution of dielectric constants of polymeric layer is discussed and the performance of the LC lens is investigated. The applications of such a LC lens are cell phones, webcam, and pico projectors. (C)2012 Optical Society of America
URI: http://dx.doi.org/10.1364/OE.20.002045
ISSN: 1094-4087
DOI: 10.1364/OE.20.002045
Volume: 20
Issue: 3
Begin Page: 2045
End Page: 2052
Appears in Collections:Articles