基於視角擷取的光場近眼顯示技術

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姓名

紀冠宇(Guan-Yu Ji) 查詢紙本館藏

畢業系所

光電科學與工程學系

論文名稱

基於視角擷取的光場近眼顯示技術
(Light Field Near Eye Display Base On View-Angle Extraction)

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至系統瀏覽論文 (2029-8-1以後開放)

摘要(中)

本論文旨提出利用體積全像光元件結合波導技術來製作光導的方法，以實現光場技術。光場是透過透鏡陣列使影像資訊在每一個區域都有著不同的光資訊，最終帶有三維資訊的影像，可以解決目前頭戴式顯示器的視覺輻輳調節衝突之問題。在光導的製作，體積全像光學元件具有角度選擇性之特性，以取代透鏡陣列上的每一個子透鏡，萃取出影像的不同視角，並設計全像透鏡使視角放大，解決市售近眼顯示器視角的不足。實驗中，製作橫向與縱向的子透鏡陣列，並以相位疊加法模擬，在滿足布拉格條件各子透鏡所萃取的視角。實驗結果表示出以體積全像光學元件製作子透鏡，可萃取到不同的子畫面，子畫面視角可相差2.79度，且子畫面的視角放大2.2~2.3倍間。

摘要(英)

This is proposes a method for creating optical waveguides using volume holographic optical elements combined with waveguide technology to realize light field technology. The light field, through an array of lenses, ensures that each region contains different optical information, ultimately producing images with three-dimensional information. This can solve the current visual convergence-accommodation conflict issue in head-mounted displays.
In the creation of optical waveguides, volume holographic optical elements, with their angle selectivity characteristics, replace each sub-lens in the lens array, extracting different perspectives of the image. Additionally, holographic lenses are designed to magnify the viewing angles, addressing the insufficient viewing angles in commercial near-eye displays.
During the experiments, lateral and longitudinal sub-lens arrays were created, and simulations were conducted using phase superposition to meet the Bragg conditions for the viewing angles extracted by each sub-lens. The experimental results demonstrated that sub-lenses made with volume holographic optical elements can extract different sub-images, with a viewing angle difference of 2.79 degrees between sub-images, and the viewing angles of sub-images are magnified by a factor of 2.2 to 2.3.

關鍵字(中)

★ 體積全像
★ 相位疊加法
★ 光導
★ 光場
★ 透鏡陣列

關鍵字(英)

★ volume hologram
★ VOHIL
★ light guide
★ light field
★ lens array

論文目次

摘要 I
ABSTRACT II
致謝 IV
目錄 V
圖目錄 VIII
表目錄 XII
第一章緒論 1
1-1 研究背景 1
1-2 文獻回顧 2
1-3 研究動機 3
1-4 論文前置研究 4
1-5 論文架構 4
第二章實驗原理 5
2-1 全像術 5
2-2 薄全像與厚全像 9
2-3 布拉格條件 10
2-4 耦合波理論 13
2-5 相位疊加法 31
2-6 光場顯示 38
2-7 成像放大率系統 41
第三章體積全像光學元件之角度選擇性模擬與光場應用 43
3-1 體積全像光學元件的角度選擇性以光場技術之應用 43
3-2 利用相位疊加法建立三維解析解 45
3-2-1 水平角度擷取模擬 55
3-2-2 垂直角度擷取模擬 56
3-3 建立拍攝三維體積全像光學元件偏振模擬 58
第四章設計二維光導實驗架構與驗證 62
4-1 實驗架構 62
4-2 二維光導之設計 73
4-2-1 橫向角度選擇的透鏡陣列與視角放大光導元件之設計74
4-2-2 縱向角度選擇的透鏡陣列與視角放大光導元件之設計79
4-3 二維視角放大和擷取光導實驗結果與分析 84
4-3-1 體積全像光學元件繞射效率分析 84
4-3-2 實驗和設計之視角放大分析 90
4-3-3 實驗和模擬的角度選擇性分析 95
4-4 二維視角放大和擷取光導實驗討論 101
第五章結論 106
參考資料 108
中英文名詞對照表 111

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指導教授

余業緯(Yeh-Wei Yu)

審核日期

2024-8-12

推文