LED調(diào)色：基礎(chǔ)與背景

　　介紹

　　本應(yīng)用筆記介紹幾個(gè)方法來(lái)創(chuàng)建顏色一致的基于LED的照明產(chǎn)品，引導(dǎo)讀者如何與Cree的產(chǎn)品有效的工作來(lái)實(shí)現(xiàn)這個(gè)目標(biāo)。

　　與所有半導(dǎo)體器件一樣，LED具有材料和工藝的變化，從而產(chǎn)生與性能相應(yīng)變化的產(chǎn)品。LED分級(jí)和包裝來(lái)平衡與照明行業(yè)需求的制造過(guò)程的本質(zhì)。照明類(lèi)LED產(chǎn)品是由固態(tài)照明行業(yè)的需求，應(yīng)用要求和行業(yè)標(biāo)準(zhǔn)，包括顏色一致性，以及顏色和流明維護(hù)。

　　led照明中顏色一致性的必要性

　　沒(méi)有什么比圖片更能說(shuō)明每個(gè)照明技術(shù)需要提供一致的顏色。這是我們正在努力解決的問(wèn)題的一個(gè)例子。

　　Though this illustration is from an array of HID lamps illuminating the facade of a building， it shows the undesirable results of inconsistent color in manufacture and color maintenance of luminaires as they age.

　　An increasingly active industrial policy in the United States， European Union and throughout the world， is resulting in a rigorous set of performance requirements for LED lighting applications. For example， the 2010 document “ENERGY STAR? Program Requirements for Integral LED Lamps”2 proposes stringent requirements， significantly above those for CFLs3， the first industrial policy mandated illumination technology. The LED Lamp requirements were preceded by the 2008 document “ENERGY STAR Program Requirements for Solid State Lighting Luminaires4.” In each of these documents， there are requirements in CCT， CRI， lumen and color maintenance for an Energy Star approved LED illumination product， shown in Tables 1 and 2 below.