First developed in the 1950s, LEDs were originally only available in infra-red. These LEDs were put to good use in remote controls, televisions and a few other appliances. Between 1950 and 1990, Red, Green and Amber LEDs were developed - the mid 1990s saw the Blue LED come to light, from which white light could be produced. Since the introduction of the Blue LED, light output has doubled approximately every two years. Recently, new white LEDs have become available by combining different phosphor types with a UV LED, other colors such as purple, orange or pink can be achieved. The advantage of LED is obvious, it saves energy as well as the increased lifetimes over standard incandescent lighting. White LED is superior in lifetime and efficiency. Now-a-days LEDs are being used for every imaginable lighting application.