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색온도가변 LED 전조등이 악천후 조건에서 차량과 노면 표적의 시인성에 미치는 영향
박현수(Hyensou Pak),강혜란(Hyeran Kang),김준기(Jun-Gi Kim),이찬수(Chan-Su Lee) 한국조명·전기설비학회 2021 조명·전기설비학회논문지 Vol.35 No.9
A quantitative measurement was conducted to find out the effect of CCT tunable LED headlamp on the targets of vehicle and road surface under artificial weather environment. For this, a CCT tunable headlamp with different CCT from 3500K to 6500K and diverse targets like vehicle reflectors, a license plate, and lanes were used. Experimental weather conditions consisted of clear, light fog, heavy fog, light rain, and heavy rain. We measured the luminance of the targets and backgrounds, and then calculated the contrast ratio based on their luminance. The result showed that the low CCT headlamp was better for the visibility of the targets on vehicle and road surface, particularly in reflectors, than the high CCT headlamp. We discussed the influence of target visibility by CCT tunable headlamps and their applicability to vehicles in adverse weather conditions.