COVID-19: Corona inactivating effect on deep UV rays: Equivalent to mercury light source
-Application with a light source for sterilization-
Nitride Semiconductor
National Hospital Organization Sendai Medical Center
It was confirmed that the wavelength in the deep ultraviolet (DUV) region has an inactivating effect equivalent to that of the mercury light source used for sterilization.
Verify coronavirus inactivation:
“Verification of inactivation against OC43 coronavirus using DUV wavelength” was carried out.
Light emitting diode using DUV:
A light emitting diode (LED) using a DUV has been applied as a light source for sterilization in the medical field.
Night Ride:
Three types of light sources were prepared.
Discharge lamp
Excimer lamp with a wavelength of 222 nanometers
UV lamp
Low pressure mercury lamp with a wavelength of 254 nanometers
DUVLED
DUVLED with a wavelength of 275 nanometers
Adjust irradiation time:
Adjust the irradiation time of the object according to the illuminance of the light source.
The amount of irradiation light energy was made the same.
The distance from the light source to the object is set as long as 500 mm,
Consideration is given to obtain a practical inactivating effect.
Verification result of inactivating effect:
this time,
DUVLED with a wavelength of 275 nanometers
Equivalent to a 254 nanometer sterilization light source,
The OC43 coronavirus inactivating effect was confirmed.
from this result,
Night ride
President Muramoto
DUVLED can fully play its role as an alternative sterilizing light source for low-pressure mercury lamps.
New switch