UV-C light makes germs harmless. Up to now, disinfection has been carried out with mercury lamps, which generate UV rays. But the mercury is an extremely health-damaging heavy metal and can load the environment. Parallel to this are the UV-C wavelengths in a mercury tube, which can be used to kill germs only 20-25% of the total emitted wavelength spectrum.
UV-C LEDs emit extremely narrow-band UV light, which can then be used directly and effectively to destroy the pathogens with their radiation. The UV rays create resonances in the nucleic acids of the DNA and break the bonds of the molecules. The cell nucleus of the microorganisms is changed in such a way that cell division becomes impossible. As a result, the pathogens can no longer multiply.
In contrast to the problematic mercury lamps, UV-LEDs do not require a warm-up phase and reach full power immediately. In addition, they are mechanically highly stable, non-toxic and can be operated in the low-voltage range. In addition, UV LEDs have another advantage: LEDs are spotlights. Due to their radiation characteristics, they offer a wide range of design options.
The UV-C COB (Chip On Board) CMD-FSC-COGA now introduced by Seoul Viosys combines 16 UV-C LED chips on an aluminium carrier board and delivers 300mW beam power at 275nm with a radiation characteristic of 140°. These are available now. The 20mm x 20mm modules are fixed by means of heat conducting adhesive strips, which are already applied.