贏得LED路燈照明的挑戰(zhàn)

　　不同的照明情況需要不同的解決方案。這篇文章解釋了驅動智能街道照明設計的眾多參數(shù)和規(guī)定。

　　不可否認，LED在所有路燈照明應用中都變得足夠明亮，同時擁有最好的可用效率和壽命。然而，這種說法只有在燈具設計良好的情況下才是正確的。目前，電子和熱設計有多種成熟的解決方案，但對許多工程師來說光學仍然是一個巨大的挑戰(zhàn)。傳統(tǒng)的路燈光學解決方案很少與LED工作良好。許多新來者，甚至是一些街頭照明行業(yè)的大人物，正在努力尋找符合相關法規(guī)的最佳解決方案。世界各地的街道照明規(guī)定有著相同的目標，而且只有在其需求的具體指標上有所不同。

　　Because operation cost constitutes the largest share of the total cost of street lighting， the efficiency needs to be high. Optically speaking， this not only means the total optical efficiency of the lamp， but more importantly how efficiently the light is directed to the street and to other evaluated areas. For example， a luminaire with a simple reflective shade and a bare array of LEDs has great total efficiency， but because of poor light control， it might be difficult to fulfill the requirements of the existing street light configurations. So， instead of only focusing on how many lumens you can get out of the lamp， one should focus on how many useful lumens will reach the street surface. When using proper optics， you can achieve both： the best possible efficiency and light control.