高均勻度LED照明輔具設計與製作

DESIGN AND FABRICATION OF HIGH UNIFORMITY LED LIGHTING FITTING

黃昱傑(Yu-Chieh Huang)

指導教授 ： 簡昭珩

大同大學/工程學院/機械工程學系所/碩士(2009年)

摘要

由於LED的省電、環保、耐用等優點，即將慢慢的取代傳統的燈泡與冷陰極螢光管，但是在這其中卻因為LED的發光特性產生了一些缺點，就以高功率型LED來說，發光強度雖然大，但由於發光的區域相當小，在中短距離照明的使用上，會因為它的特性使得照明的區域有照度不均勻的狀況發生，所以必須再額外加裝其他的燈罩燈具或是將LED作陣列擺置的設計等，在保留高功率型LED特性的同時又增加其發光的均勻性是必須的。
將嘗試使用灌模技術製作LED的輔具，讓LED的光線在透射過輔具的同時，能改變其行經方向，讓射出輔具的光線能比原來LED的光線更加均佈。
本文成功製作出高均勻度LED輔具，在高度200mm時，使用亮度110 lumen發光角度120度之光源下，可使適合閱讀與書寫之500Lux照度值範圍，擴大至150mm，而在150mm範圍內之照度均勻度提升至66.1%。

關鍵字

發光二極體 ； 照明輔具

並列摘要

LED (light emitting diode) has advantage of energy-saving, environmental, and durable, so it will substitute for traditional lamp and CCFL (cold cathode fluorescent lamp); nevertheless, there are some disadvantages for characteristic of LED in the substitute process. For high power LED, it has high brightness intensity but the region of light-extraction area is too small. It will produce nonuniformity of illumination in this region by using in short distant illumination. It have to be fitted some lampshade and lighting fitting, or to design the array places. It is important to retain the luminance and to increase the uniformity of high power LED at same time.
Try to fabricate the LED lighting fitting by molding technique. It will change the ray direction by tracing the lighting fitting, to let the luminance more uniformity than before.
In this study, succeed in fabricating the high uniformity LED lighting fitting. At the height of 200mm, it can let the region of the illumination suiting to read and write enlarge to 150mm, and the uniformity of illumination in the region of 150mm promote to 66.1%.

並列關鍵字

lighting fitting ； LED

參考文獻

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