ams OSRAM’s high and low power UV-C LEDs can effectively inactivate SARS-CoV-2

OSRAM's High and Low Power UV-C LEDs

Nov 8, 2021

– 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 evidences 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.

For the experiment, a fixture was equipped with Oslon UV 3636 in two different power classes (4 and 42 mW) and placed at a distance of 300mm to the pathogens. All LEDs are at a wavelength of 275 nm. The uniform irradiance of the probe was realized by a light mixing chamber and the irradiance determined under the consideration of all reflections. At low intensity levels a dose of 2,7 mJ/cm² for a log3 or up to 99.9% reduction and 3,6 mJ/cm² for log4 or up to 99,99% have been derived.

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).

Source: https://www.osram.com

Related Articles


Changing Scene

  • TALQ Consortium Released Version 2.6.0 of the Smart City Protocol

    May 24, 2024 The TALQ Consortium has released a new version 2.6.0 of its Smart City Protocol, a global interface standard for smart city device networks. Continuous evolution of the protocol ensures the interface standard constantly adapts to changing market needs. Version 2.6.0 introduces a new Cabinet Control profile, an extension of active periods and… Read More…

  • Maxlite Appoints Lance Hollner as President & Chief Executive Officer

    May 24, 2024 MaxLite is pleased to announce that its Board of Advisors has appointed Lance Hollner as its new President & CEO. A lighting industry veteran, Hollner brings over two decades of lighting expertise and knowledge to MaxLite, along with a strong track record of delivering results, driving continuous improvement, and developing talent. Much… Read More…


Design

  • G5 Series from Eralux Illuminates the Oshawa Library

    G5 Series from Eralux Illuminates the Oshawa Library

    May 23, 2024 Eralux is proud to present its latest project with the G5 Series at the Oshawa Library to improve the atmosphere and use of public spaces. Located in downtown Oshawa, Ontario, the library is a center for learning and creativity. Now that Eralux’s innovative lighting solution has been introduced, the library experience is… Read More…

  • Luminis Wins Red Dot Award for Inline

    Luminis Wins Red Dot Award for Inline

    May 14, 2024 Luminis recently announced its Inline family has received a Red Dot Design Award for Product Design. Dating back to 1955, the Red Dot Design Award is one of the world’s largest design competitions. The Red Dot Label has become established internationally as one of the most sought-after marks of quality for good… Read More…


New Products

  • Discover Evoq Cove Lighting System from Lumenwerx

    Discover Evoq Cove Lighting System from Lumenwerx

    May 23, 2024 Lumenwerx proudly introduces Evoq, an adaptable cove lighting system comprising modular light fixtures in a plug-and-play design, several mounting options, and precision-engineered optics, among other components and features. Designed with meticulous attention to detail and a commitment to innovation, Evoq sets a new industry standard, redefining the possibilities of cove lighting. Light… Read More…

  • Airlight and CDm2 Join Forces to Offer Casambi Bluetooth Control Solutions

    Airlight and CDm2 Join Forces to Offer Casambi Bluetooth Control Solutions

    May 23, 2024 CDm2 LIGHTWORKS is excited to announce a new partnership with Airlight; the authorized Canadian partner for Casambi, offering customized, future-proof control systems utilizing low energy Bluetooth 5.3. “Partnering with Airlight enables CDm2 to deliver Casambi innovative technology to our clients in support of their diverse project requirements.” Casambi is designed to be flexible… Read More…