Ultraviolet refers to invisible light spanning a range of wavelengths between about 100 to 400nm.
UVC (deep ultraviolet) light does not exist in nature, because its wavelength ranging from about 100 to 280nm cannot reach the Earth. Nonetheless, UVC light performs a wide range of functions such as sterilization, organic decomposition, photopolymerization and sensing.
We have the technology to make high-power LEDs in the UV-C range and is particularly focused on sterilization.
There are several methods for sterilization such as heat and chemicals. UV sterilization is one of the methods which uses UV irradiated light. It has features not found in other sterilization methods and is used in many applications.
|・Since no chemicals are used, no need to wipe off or remove
・Effective against chlorine-resistant micro-organisms that are not sterilized by chlorine
・Does not produce UV-resistant bacteria
|・Hazardous to the human body and organisms (acute/chronic UV damage)
・Damage to plastic materials such as synthetic resin
・Cannot sterilize places where the light does not reach or places in shadow
Ultra Violet is invisible to human eye and it divided to UV-A ,UV-B and UV-C.
UV-C is found within 100-280 nm range. In the graph can be seen that germicidal action is maximized at 265 nm with reductions on either side. Low pressure UV-C lamps have their main emission at 254 nm where the action on DNA is 85% of the peak value and 80% on the IES curve. As a result, it is extremely effective in breaking down the DNA of micro-organisms. This means that they cannot replicate and cause disease.