飛行甲板上儀表的LED背光

　　LED照明在航空電子世界得到了廣泛的應用，幾乎所有的內(nèi)部和外部都安裝了新的飛機設計。越來越多的飛機在現(xiàn)有飛機上進行改裝。一個領域是較慢的納入LED是駕駛艙，但現(xiàn)在正在改變，因為LED背光的儀表顯示器越來越普遍。本文將概述為什么在飛行甲板上采用LED是緩慢的，以及如何克服技術上的挑戰(zhàn)，如一致的調光和顏色穩(wěn)定性。

　　Figure 1： Advanced avionics systems， such as the Honeywell Primus Epic about to be installed on the next-generation Embraer E-Jet， are using larger LCDs with advanced graphics that require high-quality LED backlighting.

　　Typical examples of LEDs used for lighting-instrument clusters will be examined， including the Lumex QuasarBrite? devices. LED backlight drivers are key to backlight quality. Examples appropriate for the rigorous demands of the avionics industry include drivers from Atmel and Semtech. Evaluation kits from STMicroelectronics and Texas Instrumentsare worthy of inclusion here， as well.