光場近眼顯示器中體積全像光學元件之間的布拉格條件相互匹配技術

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/97781

Title:	光場近眼顯示器中體積全像光學元件之間的布拉格條件相互匹配技術
Authors:	沈聖旻;Shen, Sheng-Min
Contributors:	光電科學與工程學系
Keywords:	體積全像光學元件;光導;光場;相位疊加法;視覺輻輳調節衝突;Volume holographic optical element;Light guide;Light field;Volume hologram being an integrator of the lights emitted from elementary light source, VOHIL;Vergence Accommodation Conflict, VAC
Date:	2025-08-13
Issue Date:	2025-10-17 11:53:46 (UTC+8)
Publisher:	國立中央大學
Abstract:	本論文利用體積全像光學元件製作光導，透過記錄不同角度的光柵結合光場設計來解決視覺輻輳調節衝突的問題。光場技術是從不同方向和位置進入觀察者眼睛的光線資訊，在光導的製作中，利用體積全像光學元件具有角度選擇性的特性，設計不同的曝光能量來最佳化角度選擇性，每個體積全像光學元件都能取代透鏡陣列上的每一個子透鏡，擷取出不同的影像位置，並利用相位疊加法計算出滿足布拉格條件的波長與角度之後，透過SLM調製出該角度，使得擷取到的影像能從設計的方向耦合光導，形成光場的效果。根據實驗結果可以得知在考慮體積全像光學元件的收縮量可以大幅度的增加擷取出來的畫面位置，使角度選擇性選取出的子畫面更加精確。 ;This paper utilizes volume holographic optical elements to create light guides, addressing the issue of visual accommodation-conflict by recording diffraction gratings at different angles and integrating them with light field design. Light field technology involves light information entering the observer’s eyes from different directions and positions. In the fabrication of light guides, the angle-selective properties of volume holographic optical elements are utilized, with different exposure energies designed to optimize angle selectivity. Each volume holographic optical element can replace a sub-lens in a lens array, capturing images from different positions. After calculating the wavelength and angle that satisfy the Bragg condition using the phase addition method, the angle is modulated through an SLM, ensuring that the captured image couples into the light guide from the designed direction, thereby forming the light field effect. Experimental results show that considering the shrinkage of the volume holographic optical elements can significantly increase the captured image positions, making the angle-selective sub-images more precise.
Appears in Collections:	[Graduate Institute of Optics and Photonics] Electronic Thesis & Dissertation

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