UV LED (ultraviolet light emitting semiconductor) couples the electrons and holes inside the semiconductor under the influence of the external power supply, so that the electrons enter a low energy state from a high energy state. The energy difference generated in this process will be released in the form of photons, which is simple This is the light-emitting principle of UV LED. The semiconductor light-emitting element can last for up to 20,000 hours. The traditional UV lamp ionizes the gas (usually mercury) in the lamp chamber through an electric arc to excite its atoms to cause decay. During the decay process, its energy is released in the form of photons. UV LED curing solves the shortcomings of traditional UV curing. Compared with traditional mercury lamps, its curing light source has the characteristics of ultra-long service life, ultra-low temperature, and energy saving. The advantages of UV LED can be seen below:
1. High-pressure mercury lamps produce high temperature and ozone during use, which are very unfavorable to the operating environment and environmental protection. The UV LED curing process does not produce ozone and high temperature, which is safer and more environmentally friendly than the traditional mercury lamp process.
2 UV LED light source is a solid-state semiconductor-based curing device. It is a cold light source. The heat generated by the light source is much lower than that of a traditional mercury lamp. The surface temperature of the workpiece is low, which is more suitable for the curing of heat-sensitive materials
3. UV LED has stable light output and good uniform curing effect, which can improve productivity. The UV LED light source is also scalable, and the length of the effective irradiation area can be continuously increased.
4. The UV LED light source does not need to be preheated and can be switched on and off instantaneously. Its service life is 10 times longer than that of a traditional mercury lamp.
5. UV LED has low energy consumption, and its power consumption is only 10% of that of traditional mercury lamps
6. UV LED is durable and reliable, which can greatly reduce maintenance costs.
