In addition to water, air and food, light has always influenced people's rest and rest, living a life of sunrise and sunset.

Until 1879, Edison invented the electric light bulb (incandescent), its principle is: when the light access circuit, current flow through the heating effect of the filament, make the incandescent lamp for visible and infrared light, this phenomenon in the filament temperature up to 700 k can detect, because at work the filament temperature is very high, most of the energy wasted in the form of infrared radiation; At the same time, because the filament temperature is very high, evaporation is also very fast, so the life is greatly shortened, about 2200 hours or so, and the light efficiency is about 12 (Lm) per watt.

Before lighting system only pay attention to quantity, but today has gradually moved towards delicacy, pay attention to energy-saving effect.

Due to the extensive use of lighting technology and lighting appliances, people's living standards are generally improved, the demand for lighting equipment is surging day by day, and also the expansion of power consumption. Therefore, people begin to pay attention to the development of high-efficiency and high-quality lighting equipment.

The electron energy saving lamp heats the filament of the lamp mainly through the ballast. At about 1160K temperature, the filament starts to emit electrons (fixed on the filament and coated with some electron powder). After the electron collision, argon atoms collide with each other in an elastic way. The filament temperature of the fluorescent lamp is about 1160K, which is lower than that of the incandescent lamp (2200K ~ 2700K). Therefore, its life is greatly increased to more than 8000 hours. Moreover, because it does not have the current thermal effect of the incandescent lamp, it can reach 60 lumens per watt (LM).