Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Blue-Light Hazards of 405 nm Sterilization LED Lamps

405 nm 살균용 UV LED 등기구의 청색광 위해에 관한 연구

  • Hyeon-seok Heo (Dt&C) ;
  • Chung-hyeok Kim (Ingenium College, Kwangwoon University) ;
  • Ki-ho Nam (Department of Plasma Biodisplay Engineering, Kwangwoon University) ;
  • Jin-sa Kim (Department of Automatic System, Chosun College of Science & Technology)
  • 허현석 ;
  • 김충혁 (광운대학교 인제니움학부) ;
  • 남기호 (광운대학교 플라즈마바이오디스플레이학과) ;
  • 김진사 (조선이공대학교 자동화시스템과)
  • Received : 2023.02.10
  • Accepted : 2023.03.11
  • Published : 2023.05.01
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Abstract

Recently, sterilization technology has received increasing interest due to the COVID-19 pandemic and required safety precautions. Particularly, sterilization devices using near ultraviolet (UV) with a 405 nm wavelength are also drawing attention. It has a UV-C wavelength and other sterilization effects. Its blue-colored light on the boundary between UV and visible light is used as a light-emitting diode (LED) lamp for 405 nm sterilization, owing to its longer wavelengths than UV rays. However, the 405 nm wavelength contains blue light that can damage the eyes and skin during prolonged exposures and affect the emotional and biological parts of the body. Currently, 405 nm sterilization LED light registers are circulating in the market. However, they have not undergone safety tests for blue-light hazards. Thus, with the active distribution of sterilization LED lights, solid safety standards and management systems are essential to protect users from blue-light hazards. Accordingly, in this study, we conducted spectral radiance and spectral radiative luminance tests on 405 nm sterilization LED registers available in the market by the measurement criteria of IEC 62471. Safety standards must be established to secure users' safety against blue light hazards at a time when 405nm sterilization LED lights are actively distributed due to COVID-19.

Keywords

Acknowledgement

The present research has been supported by the Research Grant of Kwangwoon University in 2021.

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