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  • 學位論文

不同激發光螢光粉光學模型之分析

The analysis of different blue light sources for YAG phosphor model

指導教授 : 楊宗勳 孫慶成
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摘要


在本論文中,為了探討不同波長之激發光搭配YAG 螢光粉封裝成白光LED 的光學特性,因此建立了不同激發光YAG 螢光粉光學模型,而我們利用蒙地卡羅 (Monte-Carlo) 光追跡法結合米氏散射(Mie Scatter) 原理來模擬光線在YAG 螢光粉內的散射行為,並藉由二次光追跡來得到吸收係數和轉換效率。由於藍光經過YAG螢光粉後會發生形變,所以引入β參數結合螢光粉吸收頻譜來修正藍光頻譜形變的情形,並利用線性疊加的方式還原其頻譜,最後藉由實際半球封裝白光LED來驗證光學模型的準確性。

並列摘要


In order to explore the property of white light LED, we build the phosphor model which is encapsulated with different LED wavelength. we use the Monte-Carlo ray tracing method with Mie scattering theory to simulate the scattering behavior in YAG phosphor, and obtain absorption coefficient and transfer efficiency by 2-nd ray tracing. Because the spectrum of blue light will distort by YAG phosphor, we introduced a coefficient β to compensate the distortion of blue light spectrum, and recover the original spectrum by superposition. At last, we verified the accuracy of model by experiment.

參考文獻


[81]紀葦世,高效能YAG螢光粉之特性量測與模型,元智大學光電工程研究所碩士論文,中華民國九十九年。
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被引用紀錄


徐健紘(2014)。YAG 螢光粉摻雜散射粒子之光學模型〔碩士論文,國立中央大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0031-0412201512011104
黃瑞琳(2014)。多激發光波長與溫度效應之螢光粉光學模型之研究〔碩士論文,國立中央大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0031-0412201512025053
丁姿妍(2014)。高濃度YAG螢光粉光學模型之建立與分析〔碩士論文,國立中央大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0031-0412201512023060

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