Design of Optical Lens for High Power LED Indoor Lighting

• Main Authors: Hai-Feng Liu, 劉海峰
• Other Authors: Kuang-Lung Huang
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/93633574503723410542

碩士 === 明道大學 === 材料與能源工程學系碩士班 === 104 === Global warming, air pollutions and other environmental issues have prompted the trend for carbon reduction in all types of research and development. Lighting is one of the daily life essential equipments, and was being heavily used; has accumulated remarkable electricity usage. This study presents a design and development of high-efficiency energy saving LED lamps to comply with modern demands. In this study, mirrors, refractors and energy-saving LED lamps (114 lm) were used to design a 5- and 9-LED 2-dimensional lighting array. LightTools design software was utilized to change the free form surface of lenses and the array pitch. Experimental results showed that 5-LED with 200mm pitch, reached 77.7% efficiency, 0.66 uniformity and 169 lux maximum light intensity; 9-LED array with 200mm pitch, reached 78.4% efficiency, 0.65 uniformity and 306 lux maximum light intensity. In summary, this study has designed high-efficiency energy saving LED lamps which meet CNS (China National Standards) luminance standards.