ams OSRAM’s High & Low Power UV-C LEDs Effectively Inactivate SARS-CoV-2

– UV-C LEDs such as the Oslon UV 3636 from ams OSRAM inactivate up to 99.99 percent of viruses at a dose of 3,6 mJ/cm²

– Even at very low intensities SARS-CoV-2 virus can be inactivated effectively which allows more efficient system designs for e.g. air disinfection systems

– The UV-C radiation damages the nucleic acid (DNA or RNA) within the virus and therefore not only works for SARS-CoV-2, but independently from the variant

 

ams OSRAM (SIX: AMS), a global leader in optical solutions, together with the University of Padua, presents test results on the effectiveness of ams OSRAM UV-C LEDs against the SARS-CoV-2 virus. The corona pandemic continues to dominate daily life in many regions of the world. In addition to the various measures taken to contain the pandemic, disinfection solutions based on UV-C light are becoming increasingly popular. Previously used mercury vapor lamps are often bulky and limited in their target wavelength. Significant advances in LED technology are now opening the door to new applications. The fact that they are already a useful aid in combating the pandemic has now been confirmed by research conducted by the University of Padua on the effectiveness of UV-C LEDs from ams OSRAM.

It has already been shown that a high intensity of UV-C LED radiation can inactivate the SARS-CoV-2 virus rapidly. In realistic applications, like upper air treatment or secondary air treatment devices, the necessary dose to eliminate the virus is applied over several cycles. This means that the required dose is reached by irradiation at a lower intensity for a longer period of time. To align best with realistic scenarios, ams OSRAM and the University of Padua focused the test to demonstrate a realistic evaluation regarding the impact of different irradiance levels to additionally prove for an effective system design using UV-C LEDs. In this experiment, not only the necessary dose for inactivating the SARS-CoV-2 virus was evaluated – also its consistency over different irradiation levels from low to high covering a factor of more than 100. The testing by ams OSRAM and the University of Padua differentiates from other tests that often focus on the highest possible or fastest reduction rate in their research, which can easily be achieved in experiments by increasing the irradiance and time.

The experiments from the Department of Molecular Medicine of the University of Padua confirm that UV-C irradiation provided by Oslon UV 3636 LEDs from ams OSRAM effectively reduce the quantity of SARS-CoV-2 virus. This strengthens the evidence already reported in recent publications1) that this mechanism could work independently from the variant of the pathogen and therefore offers a future-proof way of treatment for this and a potential next pandemic.

1) Lo, CW., Matsuura, R., Iimura, K. et al. UVC disinfects SARS-CoV-2 by induction of viral genome damage without apparent effects on viral morphology and proteins. Sci Rep 11, 13804 (2021).

Intensity Level

Irradiance

Time

Dose

Average Reduction in log

HIGH 1,100 W/m² 13 sec 1,43 mJ/cm² -1,46
MEDIUM 0,085 W/m² 180 sec 1,52 mJ/cm² -1,17
LOW 0,008 W/m² 1800 sec 1,46 mJ/cm² -1,61

To find out more about ams OSRAM’s High & Low Power UV-C LEDs please contact info@i-led.co.uk or call us on 01635 294606.

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Set up in 2001 Intelligent Group Solutions Ltd (IGS) is a specialist company focusing on providing a unique blend of services to customers requiring optoelectronic components, sub-assemblies and or finished product. IGS has the ability to work with not only the customer’s design engineering team but also with the product designer and the customer’s sales and marketing teams to develop solutions that fully meet the requirements of the user.  Read more…

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