The emergence of fluorescent lamps have a problem, the earliest use of fluorescent lamps is the so-called fluorescent lamp. Fortunately, the most common fluorescent lamp is only 1.2m T8 lamp. So we do not know how much it consumed in the end tile, only know that more than ordinary incandescent to save power, in fact, the most common fluorescent power consumption also depends on what kind of ballast. Lamp itself is 36 watts, if the use of domestic inductance ballast, usually with 10W of power consumption, so the power consumption of the whole lamp is 46 watts. The average user may not know. There is "energy-saving lamps" after the emergence of a new situation, in fact, the so-called energy-saving lamps but a curved fine fluorescent lamp, called it as energy-saving lamps just to "energy" this new term to beautify it. The most commonly used energy-saving lamp is 8W, its brightness is equivalent to 40 watts incandescent. But the biggest drawback of energy-saving lamps is mercury, each can pollute 180 tons of water and soil.
LED Bulb: LED is a mercury-free, light efficiency is much higher than the "energy-saving lamps" lamps, it is the real energy-saving lamps. It is bound to become the mainstream of lighting products. And it has emerged a variety of shapes of lamps, including the lamp can replace the incandescent bulbs, LED lamps to replace the fluorescent lamp, as well as LED ceiling lamps, LED downlights, LED PAR lights, etc.
The so-called luminous efficiency of the unit is the number of lap per lap to lm / W said lumens is the unit of luminous flux. Most people may not understand what is the luminous flux. We just want to different watts of incandescent lamp out of the number of dollars can be known.