Journal Textile Coloration and Finishing Year / Vol., Issue, Month 2021 / V.33,no.4,Dec Title A Study of Signal Visibility according to the Distance of Clothing for Micro-mobility Users using FOLED Authors Hyunseuk Choi*, Jihye Lee1, Hyunmi Jang1, and Sungmin Hong2 Institution/Affiliations Korea Dyeing and Finishing Technology Institute, 1Free and Mezis Co., LTD, 2Raydeco, LTD Pages/Total page pp.288 ~ 301 / 14 Language Korean Abstract The purpose of this study was to verify the degree of visibility of FOLED (fiber optic light-emitting diode) materials applied to safety-enhancing clothes of micro- mobility users during the day and night by conducting an empirical test targeting 50 people in their teens, 20`s, 30`s, 40`s, and 50`s or older. First, the results of the visibility test at 10 m-intervals from 10 to 70 m based on the clothes sample showed that the light detection of FOLED material was very good without daytime or nighttime distinction. Second, the results of directional sign detection of FOLED were confirmed to be very high without any daytime or night. Third, the results of identifying a pictogram design showed that the distance was shorter than that of light detection or directional indication. However, the FOLED pictogram design could be confirmed at a distance of 50 m or less. Therefore, if a clothes product using FOLED material is worn and micro-mobility is used, the experimental results indicate that safety will be sufficiently secured due to the excellent visibility. Keywords visibility, micro-mobility, optical fiber, light emitting, LED Download   Reference http://koreascience.or.kr/journal/OSGGBT.page?&lang=ko