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The study of tunable-focus liquid crystal lens based on gradient PVK film

It is difficult to fabricate electrode, which have gradient electric field from edge to center by applying voltage. In this study, a gradient refractive index profile can be easily formed. We change the experimental parameter about exposure time of UV light, concentration of PVK film and the Cell gap to investigate the influence on focal length. As the exposure time increase, the differences in conductivity become large from edge to center, which create better index distribution. For high concentration of PVK films, UV light can not effectively improve the conductivity of transmittance zone, which case the worse index distribution. The increasing of cell gap resulting in poor distribution of the refractive index, which cause larger focal length.

Identiferoai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0829111-001052
Date29 August 2011
CreatorsLin, Hung-Hsuan
ContributorsChi-Huang Lin, Ming-Shan Tsai, Chie-Tong Kuo, Chia-Rong Lee
PublisherNSYSU
Source SetsNSYSU Electronic Thesis and Dissertation Archive
LanguageCholon
Detected LanguageEnglish
Typetext
Formatapplication/pdf
Sourcehttp://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0829111-001052
Rightsuser_define, Copyright information available at source archive

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