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研究生： 陳建安
JIAN-AN CHEN
論文名稱： 高功率白光LED之混光設計優化及光學設計
Color-mixing, modules design and Optical design of High-Power White-Light LEDs
指導教授： 廖顯奎
Shien-kuei Liaw
口試委員: 蘇忠傑
Jung-chieh Su
張乃元
Nai-yuan Chang
賴柏洲
Po-chou Lai
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： 2007
畢業學年度： 95
語文別： 中文
論文頁數： 84
中文關鍵詞： 白光發光二極體 、光學設計 、混光設計 、照明
外文關鍵詞： White-Light LEDs, optics design, color mixing design, illumination
相關次數： 點閱：246  下載：5 
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    • 本論文利用光學設計改善發光二極體之光場分佈，及利用混光設計製作出照明規範要求之白光發光二極體光譜，將光學模擬之白光發光二極體燈具匯入照明軟體進行照明分析。在光學設計實驗中，主要為發光二極體支架設計及透鏡設計，而發光二極體支架設計將Lambertian光場改變為最佳發散角約 13∘，考量固晶及打線技術，因此以平台式為主要發光二極體支架結構並進行透鏡設計。另外在透鏡設計部分可將發散角約縮小至 9∘及亦可將發散角改變為 40∘透鏡，至於透鏡結構，主要為橢球透鏡及子彈型透鏡及特殊結構透鏡。接著混光設計部分，利用不同濃度之雙色螢光粉搭配不同藍光波長晶片(455 nm及460 nm)進行混光(黃色及橘色矽酸鹽螢光粉)，利用不同濃度之雙色螢光粉混合，可產生不同螢光粉色座標，再搭配不同藍光晶片混光，則可以產生不同白光發光二極體斜率路徑，以此製作出美國能源局2006年制定之照明規範區域。並且改善藍光晶片搭配YAG黃色螢光粉之白光發光二極體光色偏黃等問題。照明設計則是針對高功率白光發光二極體之混光設計及光學設計進行整合，探討其照明品質(眩光及空間照度充足與否及光色)。

    This thesis uses optical design to improve the light distribution of LED, and design the white light LED spectra fits to the illumination standards by appropriately use phosphors for light mixing. These calculated results for white light LED then import to interior design simulation software to analyze. For the optical design issue, we focus on the design of LED lens and LED holders. We find that the best divergence angle to design the Lambertian distribution is about ±130.
    Consider die attach and bonding issues, we choose the platform shape holder as our main structure when design the LED lamp. The divergence angle varies from ±90 to ±400 in our example. The lens shape we consider here are elliptical type and bullet type.
    The following chapter is light mixing design. The combined candidates comes from certain concentration bi-color phosphors (yellow and orange silicate phosphors) integrated with blue light chips ranging from 455 nm to 460 nm. By mixing different concentration phosphors, we can get different phosphor color coordinates. Using various blue light chips to mix light. One can generate different white light LED slopes which coherence with the DOE 2006 criteria. Also, we conquer the biased color problem of white light LED.
    Finally is the integrated technology for high-power LED mixing design and optical design. The quality of illumination parameters such as glare, space intensity and light color are also discussed.

    摘要………………………………………………………………………I Abstract…………………………………………………………………..II 誌謝……………………………………………………………………. IV 論文目錄………………………………………………………………...V 圖目錄………………………………………………………………VIII 表目錄………………………………………………………………XIII 第一章 緒論……………………………………………………………..1 1.1 前言…………………………………………………………….1 1.2 研究動機………………………………………………………..2 1.3 研究目的………………………………………………………..3 1.4 論文架構………………………………………………………..3 第二章 高功率發光二極體介紹………………………………………..5 2.1 LED發光原理與介紹…………………………………………..5 2.1.1 晶格……………………………………………………5 2.1.2 能隙……………………………………………………6 2.1.3 晶格匹配………………………………………………9 2.1.4 複合…………………………………………………..11 2.1.5 LED發光原理………………………………………..12 2.2 發光效率提升介紹……………………………………………14 2.3 高功率白光LED介紹………………………………………...15 2.4 發光二極體市場現況…………………………………………17 第三章 白光LED混光實驗…………………………………………18 3.1 螢光粉簡介……………………………………………………19 3.2 基本參數簡介及照明規範……………………………………21 3.3 白光LED混光理論分析……………………………………...25 3.4 白光LED混光實驗..………………………..………………...27 3.4.1 白光混光實驗之螢光粉介紹…………………………28 3.4.2 白光混光實驗分析……………………………………33 3.5 本章小結………………………………………………………42 第四章 LED光學設計實驗……………………………….…………44 4.1 LED光場特性……………………………………………….44 4.2 LED支架之光學模擬……………………………………….46 4.3 LED Lens之光學模擬(角度<15∘).………………………..52 4.4 LED Lens光學模擬(特殊角度) ……………………………57 4.5 實作驗證…………………………………………………….59 4.6 本章小結…………………………………………………….62 第五章 LED照明設計模擬………………………………………….63 5.1 照明品質定義……………………………………………….63 5.2 照明設計模擬……………………………………………….66 5.3 本章小結…………………………………………………….74 第六章 結論與展望…………………………………………………..76 6.1 結論………………………………………………………….76 6.2 未來展望…………………………………………………….77 參考文獻………………………………………………………………78

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