| DC 欄位 |
值 |
語言 |
| DC.contributor | 光電科學與工程學系 | zh_TW |
| DC.creator | 郭冠廷 | zh_TW |
| DC.creator | Kuan-Ting Kuo | en_US |
| dc.date.accessioned | 2012-8-21T07:39:07Z | |
| dc.date.available | 2012-8-21T07:39:07Z | |
| dc.date.issued | 2012 | |
| dc.identifier.uri | http://ir.lib.ncu.edu.tw:444/thesis/view_etd.asp?URN=982206066 | |
| dc.contributor.department | 光電科學與工程學系 | zh_TW |
| DC.description | 國立中央大學 | zh_TW |
| DC.description | National Central University | en_US |
| dc.description.abstract | 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。
| zh_TW |
| dc.description.abstract | 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.
| en_US |
| DC.subject | 發光二極體 | zh_TW |
| DC.subject | 螢光粉 | zh_TW |
| DC.subject | 吸收係數 | zh_TW |
| DC.subject | 轉換效率 | zh_TW |
| DC.subject | YAG | zh_TW |
| DC.subject | Phosphor | en_US |
| DC.subject | Absorption coefficient | en_US |
| DC.subject | Conversion efficiency | en_US |
| DC.subject | LED | en_US |
| DC.title | 不同激發光螢光粉光學模型之分析 | zh_TW |
| dc.language.iso | zh-TW | zh-TW |
| DC.title | The analysis of different blue light sources for YAG phosphor model | en_US |
| DC.type | 博碩士論文 | zh_TW |
| DC.type | thesis | en_US |
| DC.publisher | National Central University | en_US |