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URN etd-0211109-155842 Statistics This thesis had been viewed 4473 times. Download 5395 times. Author Yu-Chieh Huang Author's Email Address No Public. Department Mechanical Engineering Year 2008 Semester 1 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 91 Title DESIGN AND FABRICATION OF HIGH UNIFORMITY LED LIGHTING FITTING Keyword LED lighting fitting lighting fitting LED Abstract 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%.
Advisor Committee Chao-Heng Chien - advisor
Files Date of Defense 2009-01-22 Date of Submission 2009-02-17