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EVERLIGHT Studying and Proving UVC LED (275nm) to Effectively Eradicate COVID-19

    Shulin, New Taipei City – Dec.21, 2021 – EVERLIGHT Electronics Co., Ltd., a leading manufacturer in the global LED industry, successfully developed UVC LED that can effectively eradicate SARS-CoV-2 after confirmed by a team led by a researcher, Yi-Ling Lin, in Institute of Biomedical Sciences, Academia Sinica. In specific wavelength of UVC light source, SARS-CoV-2 (Covid-19) can be effectively reduced to achieve the effect of suppressing the Covid-19 transmission. The Effectiveness of Far-Ultraviolet (UVC) Light Prototype Devices with Different Wavelengths on Disinfecting SARS-CoV-2 in this study has been published at Applied Sciences on November 12, 2021.

Coronavirus in 2019 (COVID-19) led to SARS-CoV-2 has been a severe threat to human health in the world. The most effective way to prevent pandemic is to prevent transmission from interrupting the path for virus spread. UV disinfection is improperly used because the general citizens and some UV disinfection manufacturers are lack of understanding it. In order to break consumer myth, EVERLIGHT worked together with a team led by a researcher, Yi-Ling Lin, in Institute of Biomedical Sciences, Academia Sinica, and published this study at Applied Sciences to understand UVC energy, wavelength and exposure time for reducing SARS-CoV-2 (Covid-19). Under the testing conditions of laboratory, based on fixed distance, time and liquid with virus, UVC light prototype devices in 275nm (UVC LED), 254nm (mercury lamp) and 222 nm (excimer lamp) are separately employed to calculate TCID50 and LRV (Log-Reduction Value) as the effectiveness of reducing virus. The results showed that “The ability to reduce virus activity (anti-SARS-CoV-2) in 275 nm was better than those in 222 nm and 254 nm. UVC LED (275nm) using an irradiance of 79.8 μW/cm2 presented the best effect of reducing SARS-CoV-2, where the disinfections can reach 99.99% and 99.9999% after exposed in 5 seconds and 10 seconds, respectively”. EVERLIGHT developed a series of UVC LED (275nm) with this study achievement.

Log-reduction value of UV light devices.

The LRV is a log value with virus reduction. For example: The virus amounts before the exposure of UVC LED and after exposed in 5 seconds are 107 and 102.77, where LRV= Log10107– Log10102.77= 4.23, and the virus reduction ratio is: 1 – 102.77/107= 1 – 10-4.23 = 0.9999=99.99%.

 Log-reduction valueLRV
Exposure Time5 s10 s20 s40 s
UVC LED (275 nm)4.23>6>6>6
Mercury lamp (254 nm)1.173.34>6>6
Excimer lamp (222 nm)0.330.61.831.33

About EVERLIGHT Electronics Co. Ltd.

Everlight는1983년 Robert Yeh 회장 아래에 대만 타이페이에 설립되었으며, 38년의 R&D 경험을 통해 믿을 수 있는 역량을 구축했다. 빠른 고객 요구 대처와 뛰어난 브랜드 인지도를 통해, Everlight는 세계LED시장에서 TOP 5위를 달성했다. 최고의 품질과 서비스 보장을 위해, 제품은 본사에서 직접 생산 및 패키징 한다.
Everlight는 Hight power LED, SMD LED, 램프, 광 부품, LED 조명 모듈, 디지털 디스플레이,포토커플러, 적외선 부품 등 다양한 분야의 포트폴리오를 제공하고 있다. 오늘날 Everlight는 글로벌 회사로 도약하여, 세계 각지에 6400명 이상의 직원을 보유하고 있다. (중국, 홍콩, 일본, 한국, 싱가포르, 말레이시아, 인도, 독일, 미국 등)
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