遠程熒光粉壽命和顏色維護的標準測試

　　LED照明產品的商業化過程的一部分，特別是如果制造商正在申請認證，如能源之星計劃，涉及測試壽命和顏色一致性的夾具在長期內。

　　測試標準如照明工程協會北美國（IES）LM-80（表征通量和顏色維護）和tm-21（預測長期通量維護）解釋如何從結果進行測試和估計壽命，但工作是費時和繁瑣。然而，由于傳統的白光LED已經有好幾年了，有大量的測試數據，制造商可以利用它來簡化這個過程。

　　即便如此，應該指出的是，遠程熒光粉是一種新近推出的技術，據說它比傳統的白光LED具有更高的功效，但還沒有受到其他LED產品的長期測試。更糟糕的是，目前還沒有關于遠距離熒光器件特性和壽命預測的測試標準。

　　This is unfortunate because such test data would both improve the probability of successful commercialization and allow both engineers and consumers to make direct comparisons of this promising technology with existing products， particularly as research has indicated that remote-phosphor products should last much longer than conventional white LEDs.

　　This article considers how phosphor degradation affects the life of conventional white LEDs compared with remote phosphor. The article then follows on to explain how far authorities have progressed in drafting test standards for remote-phosphor devices. Finally， an examination of the lifetime and color maintenance claims made by manufacturers of remote-phosphor devices already on the market is included.