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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/6896

    Title: 全彩反射式圓盤型複合全像術之視窗設計與數值模擬Design;and computer simulation of viewing window of full-color reflection disk-type multiplex holography
    Authors: 陳宇宏;Yu-Hung Chen
    Contributors: 光電科學研究所
    Keywords: 反射式複合全像術;全像術;全彩;reflection holograms;holography;full-color
    Date: 2007-06-29
    Issue Date: 2009-09-22 10:31:29 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 本論文主要研究方向是驗證可否用單一種波長雷射光來製作出全彩的反射式可環繞觀賞的全像片,我們所採用的方法是事先利用不同濃度的TEA溶液來改變藥膜厚度,以膨脹的底片去記錄光柵,完成沖洗步驟並晾乾後再量測其入射角與繞射角度,而底片的膨脹率將可從藥膜膨脹與收縮的理論計算中得知,我們亦將TEA濃度與膨脹率的實驗結果畫成一條曲線作參考。 利用此種全像術之理論模型配合繞射光方向餘弦的計算,我們以電腦做數值模擬,而從模擬結果中可知,若我們要以單一波長雷射製作出可繞射不同色光的反射式成像面複合全像片,在拍攝系統上需要做調整與改變,包括直線視窗的位置、膨脹率所對應的濃度、參考光聚焦高度……等等。在模擬中我們加入多種限制,大多是為了接近製作時的實際情況。 在選定好參數以後,我們利用模擬所得的數據做實際拍攝,一方面驗證模擬的正確性,另一方面期望使不同波長的觀賞視窗能如預期的出現在預設的位置上,如此一來我們將可達成利用此方法來製作全彩的反射式複合全像片。以上所提的研究過程,在本論文各章節中我們都將做詳細討論。The main purpose of this research is to prove that one can fabricate a full-color reflection hologram for 360° walk-around viewing with one laser source. TEA solution, which could change the thickness of film, is adopted, and then the pre-soaked film is used to record interference patters. Utilizing the measurement of the diffracted angle, the swelling ratio α of the film can be from the theory model. α as a function of TEA concentration is also plotted for later reference. Utilizing the calculations of direction cosines for diffracted ray, we simulate the holographic process by a computer. From the simulated results, we know that if we want to use a laser to produce a full-color reflection-type image-plane disk-type holograms, we have to design the parameters for hologram production, including the position of the straight viewing window, swelling ratio, the concentrations of TEA solutions, and the position of the converging reference wave. The above-mentioned fabrication parameters are discussed in this thesis. Finally, some experimental results are demonstrated. We can see that viewing windows for diffracted waves belonging to different wavelengths are retrieved at the same place (desired viewing window) as we designed. So we can say that it is possible to produce full-color reflection-type image-plane holograms for 360° walk-around viewing.
    Appears in Collections:[光電科學研究所] 博碩士論文

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