發光二極體光源之演色性設計與分析

Design and Analysis of Color Rendering in LED Light Sources

黃亮翔(Liang-Hsiang Huang)

指導教授 ： 王培仁

國立清華大學/工學院/動力機械工程學系/碩士(2009年)

摘要

隨著人類文明發展，照明已經廣泛地應用在人類生活中。由於LED生產製造技術進步、發光強度提升，在各種產品的應用愈來愈多，如顯示器、手電筒、背光板等，目前已經有部分的照明產品問世，未來照明產業將會成為LED普及的下一個目標。目前市售的照明燈具，光源多使用白熾燈泡或螢光燈管，面對照明能源消耗量增加及能源短缺問題，必須發展出更省電、環保的照明技術。高亮度白光LED具有高效率、耗電量小、使用壽命長、反應速度快及體積小、重量輕、抗震性能佳等特點，且不含液態汞，回收的問題比螢光燈少，將其應用在照明上，對節約能源和環境保護都是很好的選擇。
　　本研究嘗試以白光LED與單色光LED補償頻譜的概念設計高演色性LED光源，研究方式如下：首先利用實驗以及光學模擬的相互驗證，建立螢光燈光源參考標準，再進行LED光源的模型建立，利用實驗驗證，提高光源模擬的準確度；同時建立演色性計算程式，利用參數變化的概念找出補光最佳比例，綜合上述兩者的結果進行LED替代光源的模擬設計，期望能設計出與參考標準相當，高色彩均勻度且高演色性T8型LED替代光源。

關鍵字

照明 ； 發光二極體 ； 演色性 ； 混光

並列摘要

Along with development of civilization, lighting has been widely used in our lives. With the large progress in production and luminous efficiency, light-emitting diodes (LED) are more and more popular in commercial applications such as displays, flashlights, back light units, and etc. Even though not many LED luminaries are available in the market, LED illuminations are still expected to replace traditional light sources in the near future. Due to increasing energy consumption and shortage of oil production, the need to develop better energy-saving and environmentally-green technology is essential. Therefore, applications of High Brightness (HB) LED in lighting industry are important goals to be achieved. HB-LED is high in efficiency, low in energy consumption, long-life in life-span, fast in ignition, small in size, and light in weight; and, it does not contain poisonous mercury which leads to recycle problems as fluorescent tubes do.
In this study, white LEDs are supplemented with a red LED for design of HB LED light sources with high color rendering index (CRI). At first, experiments and optical simulations via ASAP are benchmarked for fluorescent sources. Then, models for HB LED and experiments are established for validation of the HB LED models plus a program to calculate mixing of various colors for the best CRI. Finally, two methods are adopted for design of HB LED with high CRI plus better uniformity compared to the fluorescent tubes.

並列關鍵字

Illumination ； Light-Emitting Diode ； Color Rendering Index ； Color Mixing

參考文獻

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