新材料技術提高LED MR16燈泡更換的流行

　　這可能是最受歡迎的燈具在使用今天最近美國能源部的報告估計，在美國就有4600萬但MR16鹵素燈泡是最有效的。這也使它通過更換LED廠商的高效率的一個有吸引力的目標，并且已經有10%的MR16的安裝基礎在美國已經切換到固態版本。

　　然而，市場上許多LED替代品都有不利的一面。美國能源部說，還有表現和等價性問題，主要是一種高流明輸出的小型MR16形式因素結合的挑戰。鹵素燈仍然可以提供比最好的LED版本流明還要多一倍的光，其中許多仍然難以滿足35瓦鹵素燈的性能要求。其他的問題包括匹配“溫暖”鹵素顏色和高價格，特別是可調光LED版本。

　　幾乎所有的主要制造商銷售LED燈mr16s，仍有很多需要改進的地方。在這篇文章中，我們來看看新的半導體材料、熒光粉的組合承諾提供真正的固態替代那些耗電但流行的鹵素。

　　Introduction and market data

　　Many estimates1 suggest that lighting as a whole accounts for about one-fifth of global electricity consumption， and LED-based lighting has long promised to have a major impact on that figure. At the same time， the growing popularity of MR16 halogen lamps makes them increasingly responsible for the world’s growing electricity bill.

　　Halogen lamps present extra motivation for consumers looking to switch to LED replacements. In rooms where previously a 100 Watt incandescent bulb would have been a typical choice， many may now feature six or more halogen spotlights. If each of those is rated at 50 Watts， the impact on customer bills is obvious.

　　No wonder LED-based versions of MR16s have already made significant inroads into the market for halogens. The latest figures from the US Department of Energy （DOE）， in its April 2013 report on LED lighting adoption，2 estimate that of 46 million MR16 halogens installed in the country， 4.8 million now feature LED chips.