Total Evaluation of LED Lighting : Glare, Visibility, Suitability for Environmental Lighting( LED Street Light -Evaluations of Discomfort Glare & Lighting Environment-)

Recently LED ligh し s have come to be used in outdoor such as s し reet lights and seourity ligh 【 s ． For those LED lights ， diffuser was not mounted due to the energy − saving and cost limitation ． Therefore ， discomfor し glare caused by non − uniform LED lunlinaire has become serious prGblems ． In this e ∬ ay ， the background of the evaluation experiments for the discomfort glare ， as w 巳 ll as the evttluation experiments and to environmenta 】 ligh ！ ing are introduced ， A ］ so 、 it is shown with the trend of the C 肥 20i5 Manchester that discomfort glare and visibbility of LED lighting are intemationally up to da し e problems ．