| 研究生: |
陳冠辰 Chen, Guan-Chen |
|---|---|
| 論文名稱: |
結合液晶與玻璃透鏡用於製作全息光學元件之製程與性能改善之研究 Combining both of liquid crystal and glass lenses used to fabricate holographic optical elements and investigate improved performance |
| 指導教授: |
許家榮
Sheu, Chia-Rong |
| 學位類別: |
碩士 Master |
| 系所名稱: |
理學院 - 光電科學與工程學系 Department of Photonics |
| 論文出版年: | 2022 |
| 畢業學年度: | 110 |
| 語文別: | 中文 |
| 論文頁數: | 82 |
| 中文關鍵詞: | 液晶透鏡 、全息光學元件 、複合式透鏡組 |
| 外文關鍵詞: | Liquid crystal lens, holographic optical elements, Fresnel zone |
| 相關次數: | 點閱:105 下載:5 |
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本論文主要針對透鏡全息光學元件(Holographic Optical Elements,HOEs)製作與性能進行實驗研究,其製程分別以玻璃透鏡、液態透鏡與液晶透鏡進行並比較所製作之透鏡全息光學元件特性。實驗結果顯示分別以玻璃透鏡與液態透鏡進行透鏡全息光學元件製作其元件特徵均有正常表現,唯獨以液晶透鏡施做之結果,在全息曝光後之光聚合薄膜所記錄的干涉圖樣呈現較為不正常的表現而非一理想的菲涅耳區(Fresnel Zone)干涉圖樣。針對以圓孔型電極液晶透鏡(Hole-Patterned Electrode Liquid Crystal Lens,HPELCLs)施做透鏡全息光學元件所遭遇的問題,實驗利用不同結構參數之液晶透鏡進行並觀察其結果是否改善,雖然液晶透鏡能力的基本量測與觀察都具備理想的條件,但其所製作之透鏡全息光學元件之特徵仍不如玻璃或液態透鏡之結果。於是,實驗結合液晶透鏡與玻璃透鏡成為複合式透鏡組進行透鏡全息光學元件製作與性能分析,實驗結果顯示複合式透鏡組施做之透鏡全息光學元件具有較理想的菲涅耳區(Fresnel Zone)干涉圖樣,並且利用玻璃透鏡進行二次曝光後,可以獲得雙焦距特徵之透鏡全息光學元件。
In the study, the hole-patterned electrode liquid crystal lenses (HPELCLs) were used to fabricate holographic optical elements (HOEs) and investigate their optical performance. Comparing the HOEs fabricated with glass or liquid lenses, it is not achieved the HOEs with ideal Fresnel zone interference patterns recorded in photopolymer films. This issue was investigated and discussed by means of variously structural conditions of the HPELCLs. Finally, combing both of liquid crystal and glass lenses was used to fabricate the HOEs to successfully achieve the HOEs with obviously recorded Fresnel zone interference patterns and dual focal lengths after double holographic exposure processes along with the tunable focuses of liquid crystal lens. To prevent too closely similar interference of both holographic exposure processes and conditions to distinguish finally two optical focuses, the double holographic exposure processes were sequentially executed with the combined lens and the only glass lens in two different positions of photo-curable polymer films.
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