Japan invented LED ultraviolet germicidal lamp for influenza A

Japan's Industrial Technology Research Institute in February 8th released a Research Institute of the invention, they use light-emitting diodes (LED) to produce a germicidal effect of UV lamps. Compared with the current mercury germicidal lamp, the LED ultraviolet lamp has the advantages of less power consumption, high safety and small size.

Due to the worldwide epidemic of influenza A (H1N1) influenza, there is a growing market for sterilization equipment in society and life. At present, the sterilization method is high temperature sterilization, chemical sterilization, ultraviolet sterilization. In these sterilization methods, mercury lamp ultraviolet sterilization is an important means of sterilization. UV disinfection is not only effective for heat resistant bacteria, and no side effects of chemical sterilization, can directly act on the bacteria DNA inhibit their proliferation. In particular, the absorption wavelength of DNA is about 260 nm, and the bactericidal effect is obvious. At present, most of the sterilization method is to issue a 256 nanometer wavelength ultraviolet mercury lamp. But if mercury spills, it can cause damage to the environment. In addition, the mercury lamp itself is also very large volume, so the market requires the development of mercury free, and light and simple UV sterilization equipment.

LED lighting is mostly used in street decoration and other energy-saving light source, has not yet achieved LED UV light. The use of a few gallium nitride materials LED ultraviolet light, due to technical bottlenecks, the manufacture of short wavelength light technical difficulties, the market has not yet appeared under the wavelength of 350 nm LED.

The Institute of Yamazaki So, Makino Junharu and other leaders of the research team through the improvement of the quality of artificial diamonds and electronic devices, the successful development of a nearly practical 0.3mW luminous power of the diamond LED. The team used artificial diamond to produce 0.5 mm diameter LED, with LED coated on the tray of Escherichia coli ultraviolet radiation, confirmed the death of e.coli. The irradiation range is 2 mm and the irradiation range is about 1 cm.

In the future, the research team plans to improve the luminous intensity by the transformation of electronic devices, to verify the effect of short time sterilization.