Nichia's deep ultraviolet LED is expected to be mass-produced, which can eliminate 99.99% of COVID-19
The deep ultraviolet LED that can kill 99.99% of the new coronavirus is expected to be mass-produced! The Japanese LED manufacturer Nichia has developed and launched a “portable UV irradiator” with a deep ultraviolet LED with an emission wavelength of 280 nanometers (nm) and a light output of 70 milliwatts. It has been confirmed by experiments that it is 5 Irradiation at a centimeter for 30 seconds can eliminate 99.99% of virus particles. The product is about to be mass-produced and is expected to be used in air purifiers and air conditioners.
According to the "Mainichi Shimbun" and "Asahi Shimbun" reports, Japanese LED manufacturer Nichia has developed a deep ultraviolet LED with an emission wavelength of 280 nanometers (nm) and a light output of 70 milliwatts. Studies have shown that when the ultraviolet wavelength is 260 nanometers (nm), the sterilization ability is the highest, but the short wavelength will reduce the light output and shorten the life of the deep ultraviolet LED.
According to Nichia's research, when the emission wavelength is 265 nanometers (nm), the service life of the LED is estimated to be 2000 hours, but at 280 nanometers (nm), the service life can be increased by about 10 times to about 20,000 hours.
The report pointed out that the "portable ultraviolet irradiator" developed by Nichia uses a total of 12 deep ultraviolet LEDs to increase the light output power of 280 nanometers (nm) to 70 milliwatts. According to experiments by Tokushima University, when deep ultraviolet rays are irradiated at a distance of 5 cm from the new coronavirus for 30 seconds, 99.99% of the virus particles on the surface of the object can be destroyed. In addition, it has also been confirmed that ultraviolet rays with a wavelength of 280 nanometers (nm) have the same sterilization effect as ultraviolet rays with a wavelength of 260 nanometers (nm) after increasing the light output.
Nichia said that after adjustments to extend the life of the LED, the product can be put into practical use in the future. The company has donated 20 portable UV irradiators to the Tokushima prefectural government, and also donated 30 to Tokushima University. Domestic manufacturers discuss product development and sales using deep ultraviolet LEDs. The product has already been built into a mass production system and is expected to be used in air purifiers and air conditioners.