What is the Difference Between Energy-efficient LED Bulb and Other Light Sources?

Energy efficient LED bulbs are different from incandescent and fluorescent lamps in several ways.

1. If designed properly, energy efficient LED bulbs will be more efficient, more versatile and have a longer service life.

2. Energy efficient LED bulbs are "directional" light sources, which means they emit light in a specific direction, while incandescent lamps and CFLs emit light and heat in all directions. This means that energy efficient LED bulbs can use light and energy more efficiently in many applications. However, this also means that complicated processes are required to produce LED bulbs that emit light in all directions.

3. Common colors of energy efficient LED bulbs include amber, red, green and blue. In order to produce white light, LEDs of different colors are combined or covered with phosphor materials to convert the color of light into the familiar "white" light used in homes. The phosphor is a light yellow material that covers some LEDs.

4. Color energy efficient LED bulbs are widely used as signal lights and indicator lights, just like the power button on a computer. In CFLs, electric current flows between electrodes at both ends of a tube containing gas, and this reaction produces ultraviolet (UV) light and heat. When ultraviolet light hits the phosphor coating inside the bulb, it will be converted into visible light.