研究生: |
柯駿程 Chun-Cheng Ko |
---|---|
論文名稱: |
用於均勻照明系統中之LED圓形導光管設計 Innovative Design of LED Circular Light Pipe for Uniform Illumination System |
指導教授: |
黃忠偉
Jong-Woei Whang |
口試委員: |
蕭弘清
Horng-Ching Hsiao 胡能忠 Neng-Chung Hu 趙涵捷 none 陳省三 none |
學位類別: |
碩士 Master |
系所名稱: |
電資學院 - 電子工程系 Department of Electronic and Computer Engineering |
論文出版年: | 2008 |
畢業學年度: | 96 |
語文別: | 中文 |
論文頁數: | 53 |
中文關鍵詞: | 發光二極體 、圓形導光管 、全反射 、均勻度 、非序列光線追跡 、田口方法 |
外文關鍵詞: | LED, Circular Light Pipe (CLP), TIR, uniformity, non-sequential ray tracing, Taguchi method |
相關次數: | 點閱:268 下載:0 |
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由於3C產品的發展快速,設計者為了增加產品的實用性與美觀性,於是運用了圓形結構的照明裝置到產品中,而受限於產品的輕薄短小、低耗電和低成本等訴求,光源於是選擇發光二極體(LED),圓形結構則是以塑膠射出的導光管來製作,本文中,我們將對此圓形結構的照明裝置進行設計,並稱之為LED圓形導光管(Circular Light Pipe, CLP)。
市面上最常見的LED圓形導光管是以至少兩顆以上的LED,對稱的放置在無需經過設計的導光裝置正下方來逹成均勻照明目的。本文中,主要目的則是以單一顆LED,並搭配利用全反射(TIR)原理設計的圓形導光管來達成。圓形導光管上的TIR分光結構和微稜鏡結構將藉由TIR理論推導得到初始角度,而微稜鏡結構的數目、長度和密度分佈則先給定一組初始參數,並藉由機構軟體Pro/ENGINEER®來快速建構所需的微稜鏡結構之CLP,並輔以非序列光線追跡軟體TracePro® 來分析光輸出結果。為了得到最佳的光輸出均勻度,並節省不必要的試誤(try and error)過程所浪費的時間,故優化設計的過程將使用田口方法(Taguchi method)。
Due to the quickly development of 3C products, designers would like to add practicability and pretty on products. Because the requirements of light weight, thin, short, small, saving power and low cost, the light source will select LED and the Circular Light Pipe will use plastic materials by injection molding. In this study, we will focus on designing the illumination device with circular structure and called as LED Circular Light Pipe (CLP).
On the market, the common LED CLPs always use more than 2pcs LED and locate symmetrically under the un-designed CLP for the purpose of uniform illumination. In this study, we will use 1pcs LED to design CLP based on TIR principle. The initial angles of TIR beam-splitting structure and micro prisms on CLP will be decided by TIR principle. The numbers, lengths and distribution of micro prisms will be given a set of initial parameters. Then, we will create the initial LED CLP with micro prisms by 3D CAD software Pro/ENGINEER® and analyze the light output results by non-sequential ray tracing software TracePro®. For the better uniformity and saving time to avoid the try and error, we do optimization by Taguchi method.
參考文獻
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[8] Pro/ENGINEER is trademark of Parametric Technology Corporation, http://www. ptc.com/.
[9] TracePro is trademark of Lambda Research Corporation, http://www.lambdares. com/.
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