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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/76946完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 蔡睿哲(Jui-Che Tsai) | |
| dc.contributor.author | Po-Ying Chou | en |
| dc.contributor.author | 周柏穎 | zh_TW |
| dc.date.accessioned | 2021-07-10T21:41:16Z | - |
| dc.date.available | 2021-07-10T21:41:16Z | - |
| dc.date.copyright | 2020-08-14 | |
| dc.date.issued | 2020 | |
| dc.date.submitted | 2020-08-11 | |
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Chuang, “PDLC-Based Optical Switch Fabricated by 3D Printing,” Master Thesis, Graduate Institute of Photonics and Optoelectronics, National Taiwan University, 2018. [16]W. W. Chen, Y. L. Chen, S. H. Yu, and J. C. Tsai, “PDLC-Based Optical Aperture Tuned by the Fringing Electric Field,” 2018 International Conference on Optical MEMS and Nanophotonics, pp. 177-178, 2018. [17]J. H. Gu, W. C. Lee, Y. F. Chen, S. H. Yu, J. C. Tsai, “Stepped-Tuning Optical Diaphragm Fabricated with a Lithography-less Process,” 2018 International Conference on Optical MEMS and Nanophotonics, pp. 175-176, 2018. [18]C. W. Chang, “The Effect of Temperature and Mechanical Rubbing on the Surface Free Energy of Polyimide Thin Films and the Wettability of Liquid Crystal,” Master Thesis, Department of Photonics, National Sun Yat-Sen University, 2010. [19]D. K. Yang, “Fundamentals of Liquid Crystal Devices,” Wiley, 2014. 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C. Lee, “Multiple-Step Diaphragm of Concentric Apertures Fabricated with the Polymer-Dispersed Liquid Crystal (PDLC) and by Laser Engraving,” Master Thesis, Graduate Institute of Photonics and Optoelectronics, National Taiwan University, 2019 [33]Q. Zhang, C. Y. Tsai, L. J. Li, D. J. Liaw, “Colorless-to-Colorful Switching Electrochromic Polyimides with Very High Contrast Ratio,” Nature Communications, vol. 10, no. 1, pp. 1-8, 2019. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/76946 | - |
| dc.description.abstract | 本研究提出一個簡易、低成本且不須套用程式後處理的方式，來優化高分子分散型液晶固體光圈之成像。高分子分散型液晶(Polymer-Dispersed Liquid Crystal, PDLC)可以透過施加電壓來控制液晶分子的偏轉，和傳統機械式光圈相比，不須外加馬達控制縮放，因此有更好的微型化潛力。 在元件設計中，光圈結構是以雷射調刻出電極的氧化銦錫(Indium Tin Oxide, ITO)導電玻璃作為外層，中間填入液晶E7與高分子聚合物NOA65混合成的PDLC薄膜，最後紫外光曝光固化，形成一個可分成三階段調變的固體光圈。 光圈元件固化完成後，在未加電壓時呈現乳白色，由於遮光效果不盡理想，造成拍攝成像有霧狀模糊問題，因此再以3D列印輔助製作黑色遮罩，遮蔽除了拍攝物體方向以外的環境光線，以此優化拍攝成像，解決霧狀模糊缺點，並以程式分析量化優化幅度。 | zh_TW |
| dc.description.abstract | In this thesis, we use a simple solution to optimize a PDLC-Based Tunable Aperture without post processing. Polymer-Dispersed Liquid Crystal (PDLC) is able to deflect by applied voltage. Comparing traditional mechanical aperture, PDLC aperture needs no motor to drive and has more potential to miniaturize. In the design, the outer layer of the aperture is made by two pieces of Indium Tin Oxide (ITO) conductive glass, one of them is patterned with electrode structures by laser engraving technique. Between two ITO glasses is filled with PDLC which is mixed by E7 liquid crystal and NOA65. Last step is exposing it with UV light to solidify PDLC. A 3-step tunable solid aperture is fabricated. After all, the aperture is milky white without applied voltage, so it’s shading effect is not ideal, which makes picture foggy. To solve this problem, we made a black mask by 3D-printing technique. Cover light except from subject to optimize the imaging. Then test optimization range by program. | en |
| dc.description.provenance | Made available in DSpace on 2021-07-10T21:41:16Z (GMT). No. of bitstreams: 1 U0001-0508202013133300.pdf: 3870245 bytes, checksum: 3a0d0c165a8c75f044f71a0a6c6a4b17 (MD5) Previous issue date: 2020 | en |
| dc.description.tableofcontents | 論文口試委員審定書 i 致謝 ii 中文摘要 iii ABSTRACT iv 目錄 v 圖目錄 viii 表目錄 x Chapter 1 緒論 1 1.1 前言 1 1.2 光圈簡介[1-5] 1 1.3 光圈設計發展回顧 3 1.3.1 刀刃式微機電結構光圈(Blade-Based MEMS Aperture)[7-8] 3 1.3.2 光流體結構光圈(Optofluidic-Based Aperture)[9] 8 1.3.3 介電泳效應可變光圈[10] 12 1.4 研究動機 13 Chapter 2 高分子分散型液晶薄膜製備 14 2.1 PDLC介紹 14 2.1.1 液晶介紹[18-23] 14 2.1.2 PDLC基本性質 16 2.1.3 PDLC工作原理[15-17] 18 Chapter 3 可調變式固體光圈製作 20 3.1 PDLC製備 20 3.1.1 選定PDLC混合比例 20 3.1.2 選定PDLC薄膜厚度 21 3.2 元件結構設計 22 3.2.1 元件結構 22 3.2.2 調變模式 24 3.2.3 3D列印輔助製作黑色圓筒[6] 25 Chapter 4 相機拍攝成像與後續優化 27 4.1 攝影系統簡介 27 4.2 成像優化與量化分析 28 4.2.1 灰階轉換以亮度分組比較 29 4.2.2 改善成效量化分析 31 4.3 改變遮罩開口形狀 34 Chapter 5 結論與未來展望 37 5.1 結論 37 5.2 未來展望 38 參考文獻 39 | |
| dc.language.iso | zh-TW | |
| dc.subject | 遮罩技術 | zh_TW |
| dc.subject | 高分子分散型液晶 | zh_TW |
| dc.subject | 微型固體光圈 | zh_TW |
| dc.subject | 氧化銦錫 | zh_TW |
| dc.subject | 3D列印 | zh_TW |
| dc.subject | 雷射雕刻 | zh_TW |
| dc.subject | Masking technique | en |
| dc.subject | Polymer-Dispersed Liquid Crystal (PDLC) | en |
| dc.subject | Tunable Aperture | en |
| dc.subject | Laser engraving | en |
| dc.subject | Indium Tin Oxide (ITO) | en |
| dc.subject | 3D Printing | en |
| dc.title | 使用黑色遮罩優化高分子分散型液晶固體光圈之取像 | zh_TW |
| dc.title | Optimization of the Images Obtained Through a PDLC-Based Tunable Aperture by a Masking Technique | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 108-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 孫家偉(Chia-Wei Sun),鍾仁傑(Ren-Jei Chung) | |
| dc.subject.keyword | 高分子分散型液晶,微型固體光圈,氧化銦錫,3D列印,雷射雕刻,遮罩技術, | zh_TW |
| dc.subject.keyword | Polymer-Dispersed Liquid Crystal (PDLC),Tunable Aperture,Indium Tin Oxide (ITO),3D Printing,Masking technique,Laser engraving, | en |
| dc.relation.page | 41 | |
| dc.identifier.doi | 10.6342/NTU202002452 | |
| dc.rights.note | 未授權 | |
| dc.date.accepted | 2020-08-11 | |
| dc.contributor.author-college | 電機資訊學院 | zh_TW |
| dc.contributor.author-dept | 光電工程學研究所 | zh_TW |
| 顯示於系所單位： | 光電工程學研究所 | |
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