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99.99% of coronavirus killed in 30 seconds with Japan firm s UV LED The Mainichi
TOKUSHIMA A deep ultraviolet (UV) LED with the ability to inactivate 99.99% of coronavirus particles when shined on surfaces for 30 seconds under certain conditions has been developed by a Japanese firm.
Nichia Corp., based in the city of Anan, Tokushima Prefecture, is ready to mass-produce the LED, and apparently hopes to use it in air purifiers, air conditioning systems and other equipment.
According to the company, the LED emits deep UV light with a wavelength of 280 nanometers, and has an optical output of 70 milliwatts. The inactivation of virus particles is said to be most effective at a wavelength of 260 nm, but the optical output drops at shorter wavelengths, which would reduce the deep UV LED s lifespan. The company says that at 265 nm, the LED has an estimated lifespan of about 2,000 hours. At 280 nm, that can be expanded by about 10 times, to some 20,000 hours.
99.99% of coronavirus killed in 30 seconds with Japan firm s UV LED
January 9, 2021 (Mainichi Japan)
The Handy UV emitter trial product, which can inactivate virus particles in 30 seconds, is shown in this image provided by Nichia Corp. TOKUSHIMA A deep ultraviolet (UV) LED with the ability to inactivate 99.99% of coronavirus particles when shined on surfaces for 30 seconds under certain conditions has been developed by a Japanese firm. Nichia Corp., based in the city of Anan, Tokushima Prefecture, is ready to mass-produce the LED, and apparently hopes to use it in air purifiers, air conditioning systems and other equipment. According to the company, the LED emits deep UV light with a wavelength of 280 nanometers, and has an optical output of 70 milliwatts. The inactivation of virus particles is said to be most effective at a wavelength of 260 nm, but the optical output drops at shorter wavelengths, which would reduce the deep UV LED s lifespan. The company say