As a result of the COVID-19 pandemic, there is an increased demand for safe, sanitized public spaces.

Ultraviolet light has well-known used in the water, air and surfaces disinfection.The wavelength between 100 and 400 nanometers.Most uv disinfection systems use germicidal lamps with a wavelength of 240nm-280nm, the most common being 254nm.

         We call them ozone-free lamps, made with doped fused quartz which blocks the transmission of 185nm energy, emit approximately 95% of the ultraviolet energy at the mercury resonance wavelength of 253.7nm. This wavelength is the region of maximum germicidal effectiveness and is highly lethal to virus, bacteria, protozoa and mold.

          But exposure to 254 nm UVC light can also cause damage to human skin and eyes. However, recently published research has shown that 222nm uv(Far-UV, 200 to 235 nm) has the same bactericidal ability as 254nm light without harming the skin or eyes

          Biophysical principles are based on the limited penetration distance of light at Far-UV in a biological sample (e.g., stratum corneum) compared to light at 254 nm.

          Can Far-UV affect the skin?

          Filtered 222nm technology uses excimer lamps with specially designed short-pass filters to remove harmful UV wavelengths. Excimer lamp is an arc discharge light source with a special inert gas filled chamber, no mercury, no electrodes.

          Can Far-UV affect the eye?

          Another organ that is particularly sensitive to UV damage is the lens. However, the lens is located at the distal end of a sufficiently thick cornea. Therefore, it is expected that the permeability of light from far UVC 200 nm through the cornea to the lens is essentially zero.

           Suggested applications

           Filtered 222nm far-UVC light technology can be used wherever people gather and interact,like the supermarket,school,healthcare,hotel,office,and public areas...