Calculation for array of seven cut-off luminaires with height to spacing ratios of 1 to 4 shows that glare due to nearest lamp exceeds that of all others combined, even if CIE (Commission Internationale de l'Eclairage) cut-off conditions are strengthened to I80=20 and I90=5 candela per kilolumen; this is because nearest lamp is seen below 80°; development of formula for most sensitive case also applies to case where two lamps may be seen below 80°.
Avoidance of glare in street traffic
Vermeidung von Blendung im Strassenverkehr
Lichttechnik ; 19 , n 2
1967
Article (Journal)
German
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