Evaluation of Blue Light Hazards in LED Lightings

LED 조명에 대한 청색광 위험 평가

Jung, Myoung Hoon;Yang, Seok-Jun;Yuk, Ju Sung;Oh, Sang-Young;Kim, Chang-Jin;Lyu, Jungmook;Choi, Eun Jung

  • Received : 2015.04.27
  • Accepted : 2015.07.22
  • Published : 2015.09.30


Purpose: To evaluate blue light hazards of LED lightings in an optical store with blue light radiance used as the quantitative indicators of photobiological hazard. Methods: The spectral radiance of each LED lightings was measured, and blue-light radiance and the corresponding maximum exposure time were calculated. Then each LED lighting was classified according to the risk group from IEC 62471 standard. Results: The yellow LED lightings used in showcases and white LED lightings used on ceilings and logo were classified into risk group RG0. But the white LED lightings used on showcases were classified into risk group RG1. The blue light radiances of white LED lightings used in showcases are dozens of times larger than that of fluorescent lamp. Conclusions: Using the value of the blue light radiance could quantitatively express the blue light hazard to various lightings. It was confirmed that white LED lightings for the showcases had high blue light hazards because of their high luminance and color temperature. Therefore, when replacing lightings in optical shop it is necessary to select the appropriate brightness and color temperature for eye health in the long term.


LED lighting;IEC 62471;Blue light hazard;Blue light radiance;Radiance;CCT;Blue light hazard function


  1. Hattar S, Lucas RJ, Mrosovsky N, Thompson S, Douglas RH, Hankins MW, et al Melanopsin and rod-cone photoreceptive systems account for all major accessory visual functions in mice. Nature. 2003;424(6944):76-81.
  2. Sliney DH, Freasier BC. Evaluation of optical radiation hazards. Applied Optics. 1973;12(1):1-24.
  3. Standard:IEC/EN 62471. Assessment of the unique "blue light" hazarad is critical, 2013. May 2015).
  4. Fletcher AE, Bentham GC, Agnew M, Young IS, Augood C, Chakravarthy U, et al. Sunlight exposure, antioxidants, and age-related macular degeneration. Arch Ophthalmol. 2008;126(10):1396-1403.
  5. Noell WK, Walker VS, Kang BS, Berman S. Retinal damage by light in rats. Invest Ophthalmol. 1966;5(5):450-473.
  6. Noell WK. Possible mechanisms of photoreceptor damage by light in mammalian eyes. Vis Res. 1980;20(12):1163-1171.
  7. Marshall J. Radiation and the ageing eye. Ophthalmic Physiol Opt. 1985;5(3):241-263.
  8. Okuno T, Saito H, Ojima J. Evaluation of blue-light hazards from various light sources. Dev Ophthalmol. 2002;35: 104-112.
  9. The Korean Optical News. Keen competition of blue-light blocking lenses, 2014. (22 June 2015).
  10. Ko JK, Cho MR, Lee MJ, Kim JH. Analysis on IEC 62471 for The Introduction of Photobiological Safety of LED Lamp. 2012 Autumn Conference. Korea Safety Management & Science. 2012:435-443.
  11. Kim YH. France, Reinforcement of LED safety regulations, GlobalWindow. 2010. GWOMAL020M.html?BBS_ID=10&MENU_CD=M10103&UPPER_MENU_CD=M10102&MENU_STEP= 3&ARTICLE_ID=2126746(18 June 2015).
  12. ICNIRP. Guidelines on limits of exposure to ultraviolet radiation of wavelengths between 180 nm and 400 nm (incoherent optical radiation). Health Physics. 2004;87(2):171-186.
  13. ICNIRP. Guidelines on Limits of Exposure to Broad- Band Incoherent Optical radiation (0,38 to 3 ${\mu}m$). Health Physics. 1997;73(3):539-554.
  14. ICNIRP. ICNIRP guidelines on limits of exposure to incoherent visible and infrared radiation. Health Physics. 2013; 105(1):74-96.
  15. KSSN(Korean Standards Service Network). Photobiological safety of lamps and lamp systems-Part 2: Guidance on manufacturing requirements relating to non-laser optical radiation safety. KSCIEC 62471-2, 2014.
  16. KATS(Korean Agency for Technology and Standards). Photobiological safety of lamp and lamp systems. K62471-1, 2009.
  17. Koushi A. Light Emitting Diode(translation version), 1st Ed. Seoul: SungAnDang, 2013;36.
  18. Kim CJ, Choi SW, Yang SJ, Oh SY, Choi EJ. Evaluation of blue-light blocking ratio and luminous transmittance of blue-light blocking lens based on international standard. J Korean Ophthalmic Opt Soc. 2014;19(2):135-143.
  19. Pedrotti LS, Pedrotti FL. Optics and Vision, 1st Ed. New Jersey: Prentice Hall International. 1998;20.
  20. Hong KH. Science and Technology of Light, 1st Ed. Seoul: Kyohakyeongoosa, 2012;117.
  21. Yu YG, Choi EJ. A study on blue light blocking performance and prescription for blue light blocking lens. J Korean Ophthalmic Opt Soc. 2013;18(3):297-304.
  22. GLA. A white pater of the global lighting association: Optical and photobiological Safety of LED, CFLs and other high efficiency general lighting sources. Global lighting Association. 2012.
  23. Algvere PV, Marshall J, Seregard S. Age-related maculopathy and the impact of blue light hazard. Acta Ophthalmologica Scandinavica. 2006;84(1):4-15.

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