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Area Lighting / Lighting technology, day lighting

IEV ref845-09-90

en
CIE standard overcast sky
completely overcast sky for which the ratio of its luminance Lγ in the direction at an angle γ above the horizon to its luminance Lz at the zenith is given by the relation

Lγ = Lz (1 + 2 sin γ)/3


fr
ciel couvert normalisé CIE, m
ciel totalement couvert pour lequel le rapport de sa luminance Lγ dans la direction faisant un angle γ au-dessus de l'horizon à sa luminance Lz au zénith est donné par la relation

Lγ = Lz (1 + 2 sin γ)/3


ar
المواصفة القياسية للجنة الإنارة الدولية للسماء الملبدة بالغيوم

de
bedeckter Himmel nach CIE, m

es
cielo cubierto patrón CIE

fi
pilvisen taivaan CIE-standardi

it
cielo coperto secondo CIE

ko
시아이이 표준 흐린 하늘
시아이이 표준 구름낀 하늘

ja
CIE標準曇天空

no
nb CIE standardverdi for overskyet himmel

nn CIE standardverdi for overskya himmel

pl
nieboskłon pokryty znormalizowany CIE

pt
céu encoberto normalizado CIE

sv
CIE standard för mulen himmel

Publication date: 1987
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