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目前照明能源使用极为不具效率,使得照明能源消耗增加率,大于整体能源消耗增加率。为了控制照明能源消耗增加率,开发能源效率更佳光源对于解决全球能源短缺将有极大帮助。近年来LED发光效率呈现大幅度增长,以照明所需白光LED为例,商品化规格已达50lm/W,超越目前常用白炽灯泡与卤素灯,日商Nichia预定于2006年底推出100lm/W产品上市,其发光效率与常用荧光灯相当。且依据理论来推算,白光LED发光效率极大值为199lm/W,未来仍有相当大进步空间。
At present, the use of lighting energy is extremely inefficient, making lighting energy consumption increase rate, greater than the overall rate of increase of energy consumption. In order to control the rate of increase in lighting energy consumption, the development of a more energy-efficient light source would be of great help in solving the global energy shortage. In recent years, LED luminous efficiency showed a substantial increase in order to lighting the required white LED, for example, commercialized specifications have reached 50lm / W, beyond the current commonly used incandescent bulbs and halogen lamps, Japanese Nichia is scheduled to be launched by the end of 2006 100lm / W products listed , Its luminous efficiency and common fluorescent light quite. And based on the theory to calculate, the maximum white LED luminous efficiency of 199lm / W, there is still considerable room for improvement in the future.