High power LED is the most promising product among LEDs family, which is used in lamp, electronic appliance, decorative and other lighting applications. It is more energy effient than general lights. In most case high power led consumes power from 1w to 10w which are very low level. Compared with incandescent light bulbs, it has more advantages such as long operating life, high luminous flux output, mercury-free, etc. Furthermore, it has small size and can be used combined with other electrical component such as sensor, dimmers and lighting control. Its colors cover a wide range, like red, yellow, blue, green, white, and warm white. With excellent efficiency and light performance high power LED is very popular in numerous light applications including reading lights (car, bus, aircraft), portable (flashlight, bicycle), mini accent, uplighters, downlighters and orientation, bollards, security and garden, cove, undershelf and task, automotive rear combination lamps, traffic signaling, beacons, rail crossing and wayside, indoor/outdoor commercial and residential architectural, lcd backlight and more.