Study on light attenuation of UVC-LEDs in the atomosphere

Reiya Aono; Yuusuke Takashima; Yoshiki Naoi; Takeshi Yasui; Kentaro Nagamatsu

Presentation information

Oral presentation

1 Interdisciplinary Physics and Related Areas of Science and Technology » 1.1 Interdisciplinary and General Physics

[12p-B409-1~15] 1.1 Interdisciplinary and General Physics

Thu. Mar 12, 2020 1:15 PM - 5:15 PM B409 (2-409)

Makoto Omodani(Tokai Univ.), Chiemi Fujikawa(Tokai Univ.)

3:15 PM - 3:30 PM

[12p-B409-8] Study on light attenuation of UVC-LEDs in the atomosphere

〇Reiya Aono¹, Yuusuke Takashima¹, Yoshiki Naoi^1,2, Takeshi Yasui², Kentaro Nagamatsu² (1.Tokushima Univ. Electrical Engi., 2.Tokushima Univ. pLED)

Keywords:deep ultraviolet LED, light attenuation, ozone

We measured the effect of the light path length of collimated light on deep ultraviolet (265 nm) and green (525 nm) LED, only deep ultraviolet LED confirmed the light attenuation. The light of UVC-LED with the wavelength of 265 nm was attenuated approximately 65% at the light path length of 20cm. As a result, big problem for sterilization in the atmosphere is clarified.