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Liquid crystal lens with focal length variable from negative to positive values

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3 Author(s)
Bin Wang ; Dept. of Electr. & Electron. Eng., Akita Univ., Japan ; Mao Ye ; Sato, Susumu

A liquid crystal (LC) lens with focal length variable from negative to positive is reported. There are three electrodes in the LC cell. One electrode has a circular hole in the center. The lens is driven by two voltages that produce a spatially nonuniform and symmetrical electric field in the LC layer. By adjusting the voltages, a wide range of lens power is covered. The LC lens preserves its optical quality over the entire focus range.

Published in:

Photonics Technology Letters, IEEE  (Volume:18 ,  Issue: 1 )

Date of Publication:

Jan. 1, 2006

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