A new low-voltage-driven GRIN liquid crystal lens with multiple ring electrodes in unequal widths

Yung Yuan Kao*, Paul C.-P. Chao, Chieh Wen Hsueh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

59 Scopus citations

Abstract

This work is dedicated to design a novel liquid crystal (LC) lens device with multiple ring electrodes in unequal widths, in order to offer tunability on focusing quality and to lower the level of applied voltage. The number and widths of the multiple ring electrodes are pre-designed and optimized to offer the on-line tunability on individual electrode voltages to render a better refraction index distribution for focusing, as compared to the past hole-type LC lenses. The resulted refractive index distribution is expected to offer similar focusing effects based on the theory of the gradient refraction index (GRIN) lens. The transparent electrodes of this new LC lens are placed at the inner surface of the LC cell to minimize the driving voltages, in results, less than 10V, for the same level of focusing power and an easy practical operation. A new fabrication process in the wafer level to bury bus lines is developed for generating smooth electrical fields over the lens aperture. In addition, a dielectric layer is coated between electrodes and the LC layer.

Original languageEnglish
Pages (from-to)18506-18518
Number of pages13
JournalOptics Express
Volume18
Issue number18
DOIs
StatePublished - 30 Aug 2010

Fingerprint Dive into the research topics of 'A new low-voltage-driven GRIN liquid crystal lens with multiple ring electrodes in unequal widths'. Together they form a unique fingerprint.

Cite this