白光LED中場色彩分佈之分析

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姓名

王郁睆(Yu-huan Wang) 查詢紙本館藏

畢業系所

光電科學與工程學系

論文名稱

白光LED中場色彩分佈之分析
(The analysis of the color distribution of white LED in mid-field region)

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摘要(中)

本論文中，我們將提出一個架構用以分析並探討白光 LED 中場之色彩分佈，我們將討論當 LED光源上加上二次光學元件時，黃暈的產生之機制，並希望藉此方法於後續的二次光學設計時，可以在設計時就將會導致黃暈的部分進行優化，以達到色彩高均勻度。
在文章中，我們將先對用來量測空間色彩分佈的光譜儀進行校正，接下來針對碗杯型式的封裝體之 LED空間中的色彩變化進行分析，我們使用已建構之YAG螢光粉模型在相同螢光粉濃度下，分別在有無半球形透鏡的條件下建立藍黃光之光學模型，並以實驗驗證其準確性。接著討論將光源加上二次光學透鏡之色彩分佈，並以實驗驗證建立之藍黃光光學模型可用於分析色彩均勻度。而在文章的最後，我們將討論兩種白光 LED 的藍黃光之中場距離分佈。

摘要(英)

In this thesis, we propose the framework to analyze and explore the color distribution of the white LED in mid-field. We discuss the mechanism of the yellow ring when the LED light source coupled with secondary optics, and would like to take this approach to the follow-up second optical design. As long we design the part of the second optical elements correctly, the yellow ring can achieve high and uniform color.
In this article, we corrected the spectrometer which is used to measure the color distribution of the space. Furthermore, we studied on the deviation of the color distribution in the space for LEDs in-cup encapsulation. Based on the YAG phosphor model, in the same concentration of the phosphor, we constructed simulation results and verified experiments in the case of that with or without the hemispherical lens. Moreover, we also made simulation results and verified experiments when the light source was coupled with the TIR lens. Finally, we discussed the distance of blue and yellow lights.

關鍵字(中)

★ 白光LED
★ 中場

關鍵字(英)

★ mid-field
★ White LED

論文目次

摘要i
Abstract . vi
目錄. viii
圖索引. xi
表索引. xiii
第一章緒論.1
1.1 LED 固態照明發展背景1
1.2 研究目的與動機3
1.3 論文大綱6
第二章基本原理.7
2.1 引言7
2.2 LED 發光原理7
2.3 光度學8
2.4 色彩學13
2.4.1 CIE 色座標14
2.4.2 混色原理19
2.4.3 色溫.20
2.5 中場擬合理論.21
第三章光譜儀校正 23
3.1 引言23
3.2 光譜儀校正-鹵素燈23
3.3 光譜儀校正- 高色溫 LED 32
3.4 結論36
第四章白光LED中場色彩分佈之分析.40
4.1 引言40
4.2 螢光粉模型.40
4.3 光源43
4.3.1 碗杯封裝形式44
4.3.2 碗杯封裝加上半球形透鏡形式50
4.4 光源加上二次光學元.55
4.4.1 碗杯封裝LED 加上二次光學元件55
4.4.2 碗杯封裝加半球形透鏡LED 加上二次光學元件.59
4.5 光形63
4.6 中場分析67
第五章結論.72
參考文獻.74
中英文名詞對照表.78

參考文獻

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指導教授

孫慶成(Ching-cherng Sun)

審核日期

2012-8-23

推文