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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 18 — Aug. 30, 2010
  • pp: 18506–18518

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

Yung-Yuan Kao, Paul C.-P. Chao, and Chieh-Wen Hsueh  »View Author Affiliations

Optics Express, Vol. 18, Issue 18, pp. 18506-18518 (2010)

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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.

© 2010 OSA

OCIS Codes
(220.3630) Optical design and fabrication : Lenses
(230.2090) Optical devices : Electro-optical devices
(230.3720) Optical devices : Liquid-crystal devices

ToC Category:
Optical Devices

Original Manuscript: April 22, 2010
Revised Manuscript: August 2, 2010
Manuscript Accepted: August 3, 2010
Published: August 16, 2010

Yung-Yuan Kao, Paul C.-P. Chao, and Chieh-Wen Hsueh, "A new low-voltage-driven GRIN liquid crystal lens with multiple ring electrodes in unequal widths," Opt. Express 18, 18506-18518 (2010)

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