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研究生： 王志彬
Wang, Chih-Ping
論文名稱： 薄片雷射切割窗格的光轉向研究
Light deflecting of thin laser cut panels
指導教授： 吳志陽
Wu, C.Y.
學位類別： 碩士
Master
系所名稱： 工學院 - 機械工程學系
Department of Mechanical Engineering
論文出版年： 2005
畢業學年度： 93
語文別： 中文
論文頁數： 76
中文關鍵詞： 蒙地卡羅 、雷射切割窗格
外文關鍵詞： LASER CUT PANEL, MONTE CARLO METHOD
相關次數： 點閱：84  下載：1 
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    • 　　本文以研究薄片雷射切割窗格的製程及其光轉向效果為目的。為減少窗格的厚度，在很薄的PET片(125μm)上以KrF準分子雷射切割，製作薄片雷射切割窗格，並利用蒙地卡羅法模擬切縫形成的平行四面體的介面造成光之折射及反射，再以實驗及模擬檢驗薄片雷射切割窗格的光轉向效果。研究結果顯示：(一)入射角小時，轉向到天花板的光分佈範圍較深入室內，(二)入射角小時高寬比愈小有愈多的光轉向到天花板，入射角大時則有相反的傾向。

    　　The purpose of this work is to fabricate a laser-cut panel (LCP) of thin thickness and to investigate the light deflecting efficiency of the thin LCP. To reduce the thickness of the LCP, we cut a thin PET sheet (125μm) by using KrF excimer laser. We use the Monte Carlo method to simulate the refraction and reflection at the interfaces of parallelepipeds formed by laser-cut. The performance of the resulting laser-cut panel is examined by experiment and simulation. The results shows that (1) the incident light is deflected more deeply into the room for lower incidence angle, (2) For incident light with a low angle the LCP with a smaller aspect ratio deflects more light to the ceiling and the tendency is reversed for incident light with a high angle.

    中文摘要.....................................................i 英文摘要.....................................................ii 誌謝.........................................................iii 目錄.........................................................iv 表目錄.......................................................vi 圖目錄.......................................................vii 符號說明.....................................................xi 第一章 緒論.................................................1 1-1 研究動機、背景與文獻回顧................................1 1-2 研究目的................................................4 1-3 本文結構................................................4 第二章 物理模式與模擬計算...................................12 2-1 基本假設................................................12 2-2 蒙地卡羅法(Monte Carlo method)..........................13 2-3 光包離開薄片雷射切割窗格到光纖頭的光追蹤................17 第三章 雷射切割窗格的製作及實驗量測.........................21 3-1 準分子雷射加工機概述................................21 3-2 加工材料............................................22 3-3 刻除率的量測........................................22 3-4 薄片雷射切割窗格的製作..............................23 3-5 真空鑲埋及研磨......................................23 3-6 薄片雷射切割窗格的實驗量測..........................25 3-7 普通雷射切割窗格的製作..............................26 3-8 普通雷射切割窗格的光轉向實驗........................27 第四章 結果與討論...........................................37 4-1 光學平滑介面的光轉向模擬算..........................37 4-2 薄片雷射切割窗格的量測結果..........................38 4-3 量測結果與非鏡式表面數值模擬結果比較................40 4-4 普通雷射切割窗格的定性觀測..........................41 第五章 結論與展望...........................................73 5-1 結論................................................73 5-2 展望................................................73 參考文獻.....................................................74

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