電場控制器光學應用Optic; application of electric field device

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/6884

Title:	電場控制器光學應用Optic;application of electric field device
Authors:	林柏仰;Po-Yang Lin
Contributors:	光電科學研究所
Keywords:	矩陣式液晶電場控制器;非矩陣式液晶電場控制器;non-matrix type liquid crystal controller and ma
Date:	2007-06-26
Issue Date:	2009-09-22 10:31:09 (UTC+8)
Publisher:	國立中央大學圖書館
Abstract:	本論文主要是研究電場控制器的應用。內容涵蓋兩個全新的系統架構，非矩陣式液晶電場控制器、矩陣式液晶電場控制器。利用上述開發出的液晶電場控制器系統，以純電子方式精準的控制光學系統，有別於一般傳統機械式既佔體積又控制費時的機械控制鏡片組，利用光學材料與施加電場之間的緊密關聯性，直接以電壓快速控制穿透率與聚焦點，達到電子化控制光學設備的目的。傳統的光學系統若要調變影像亮度或調整影像大小，需依靠多組光柵替換及多個透鏡組方可達到目的。如此的方式既佔體積且控制變化的解析度受到極大限制。利用本論文所提出的電場控制器搭配最近極為熱門的光學材料液晶，可輕易且精確的達到調變影像亮度與大小的目的，且變化的解析度大幅度提高，體積則大幅度縮小。論文中針對兩電場控制器做了一系列的實驗，所得結論確定在調變影像亮度部分電壓與影像亮度的關係趨近線性，調變影像大小的部分，聚焦點與控制電壓的關係亦在一個大範圍，近20~70公分之中皆呈現近乎線性。另外無論是調變影像亮度或聚焦點，調變後的視覺品質無太大變異。這些結果證明論文中電場控制器的特性確實如前述，對傳統光學設備具可取代性。This research is introduced by new electric field controlled device for optical application, the contents included two new system structure: non-matrix type liquid crystal controller and matrix type liquid crystal controller. Compare with conventional optical lens application, those two device used electric method ”voltage” to control optical characteristic, will shrink the device size and control more precise, also can reduce time consumption. Due to the optical feature of LC changed follow up different electric field, we can use voltage to adjust transmittance and focus length ,then to achieve the goal that optical modulation depend on different electric single control. In a traditional variable transmittance or focus lens system, it need to combine more then one filter film and individual lens, take some mechanical movement then can achieve the target. So the optical device will have large size and analysis ability limited by the configuration. The new electric field controlled device use liquid crystal, can very easy and accurate to change the output light brightness and focus length don’t need other assistant device. Because the character of electric controlled device, the analysis segment can separated more detailed, device size also will reduced to increase the application.
Appears in Collections:	[Graduate Institute of Optics and Photonics] Electronic Thesis & Dissertation

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