InGaN LEDs： A Question of Power

　　InGaN LEDs： A Question of Power

　　氮化镓（GaN）的混合物和氮化铟（酒店）形成的氮化铟镓（InGaN）已成为制造LED的比较流行的技术之一，特别是蓝色和绿色。虽然技术的历史可以追溯到上世纪90年代，大功率InGaN技术更近。

　　这个领域的可用产品可以应用到现代应用中，标准和高功率产品都有其优点和缺点。标准发光二极管的优点是更容易设计，以及更小，更便宜的高亮度对应。然而，一些应用，如街道照明和汽车头灯，需要额外的权力。在这两种用法之间仍有许多应用程序。

　　LED的色饱和、节能、长寿命是照明应用领域中发展最快的领域。白色和彩色发光二极管在建筑照明、娱乐、装饰照明和视频墙中有着广泛的应用。红色、绿色和蓝色发光二极管由于其结合其他颜色的能力而越来越受欢迎，现在它们可以放在一个包中。

　　Products and applications

　　This article will look at two LEDs that can be used for outdoor lighting applications： the HLMP-CB1A-XY0DD from Avago Technologies and the C503B-GAN-CB0F0791 from Cree. These two products can both be used for outdoor signage but care must be taken in preparing and mounting them， and these precautions are looked at in detail. To put this into practice， the discussion will now look at how the Cree XBDROY-00-0000-000000L01 XLamp product can be used in optical design packages. There will also be a discussion on the benefits and disadvantages of standard versus high-power products using the Lumex SML-LX1206UWW-TR as an example.

　　Blue and green LEDs for outdoor lighting

　　Avago Technologies’ 5 mm blue and green LEDs in the HLMP-Cx1A range （such as the HLMP-CB1A-XY0DD） are untinted and non-diffused. The efficient InGaN material lets them produce well-defined spatial radiation patterns at specific viewing-cone angles. Their advanced optical-grade epoxy construction provides high-temperature and moisture-resistant performance in outdoor signal and sign applications， which can be used for commercial advertising， traffic signs， and variable message signs. The epoxy contains an ultra-violet inhibitor to reduce the effects of long-term exposure to direct sunlight. They are available in 470 nm blue and 525 nm green.