DocumentCode
1244855
Title
Liquid crystal lens with focal length variable from negative to positive values
Author
Wang, Bin ; Ye, Mao ; Sato, Susumu
Author_Institution
Dept. of Electr. & Electron. Eng., Akita Univ., Japan
Volume
18
Issue
1
fYear
2006
Firstpage
79
Lastpage
81
Abstract
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.
Keywords
electrodes; lenses; liquid crystal devices; optical design techniques; optical focusing; LC cell; electrodes; focal length variable; lens power; liquid crystal lens; optical quality; spatially nonuniform electric field; symmetrical electric field; Dielectrics; Electrodes; Glass; Indium tin oxide; Lenses; Liquid crystals; Nonuniform electric fields; Slabs; Substrates; Voltage; Lens power; liquid crystal (LC) lens; negative lens; positive lens;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/LPT.2005.860397
Filename
1546043
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