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Area Lighting / Radiation, quantities and units

IEV ref845-01-31

Symbol
Iv
I

en
luminous intensity (of a source, in a given direction)
quotient of the luminous flux dΦv leaving the source and propagated in the element of solid angle dΩ containing the given direction, by the element of solid angle

I v = d Φ v dΩ MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadMeadaWgaaWcbaGaaeODaaqabaGccqGH9aqpdaWcaaqaaiaabsgacqqHMoGrdaWgaaWcbaGaaeODaaqabaaakeaacaqGKbGaeuyQdCfaaaaa@3E68@

unit: cd = lm · sr -1


fr
intensité lumineuse (d'une source, dans une direction donnée) f
quotient du flux lumineux dΦv quittant la source et se propageant dans l'élément d'angle solide dΩ contenant la direction donnée, par cet élément d'angle solide

I v = d Φ v dΩ MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadMeadaWgaaWcbaGaaeODaaqabaGccqGH9aqpdaWcaaqaaiaabsgacqqHMoGrdaWgaaWcbaGaaeODaaqabaaakeaacaqGKbGaeuyQdCfaaaaa@3E68@

unité : cd = lm · sr -1


ar
شدة منيرية (لمصدر ما فى إتجاه معين)
شدة الإضاءة (لمصدر ما فى إتجاه معين)

de
Lichtstärke (einer Strahlungsquelle, in einer gegebenen Richtung), f

es
intensidad luminosa

fi
valovoima
valointensiteetti

it
intensità luminosa

ko
광도, 광원
조도, 광원

ja
光度

no
nb lysstyrke

nn lysstyrke

pl
światłość (źródła w określonym kierunku)

pt
intensidade luminosa (de uma fonte, numa dada direcção)

sr
јачина светлости , <извора у датом правцу> ж јд

sv
ljusstyrka

Publication date: 1987
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