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Area Lighting / Emission, optical properties of materials

IEV ref 845-24-104

Symbol
RL

en
coefficient of retroreflected luminance
quotient of the luminance, L, of a plane retroreflective surface in the direction of observation and the illuminance, E MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWaamGadaGadeaabaGaaqaaaOqaaiaadweadaWgaaWcbaGaeyyPI4fabeaaaaa@37F5@ , at the retroreflector on a plane perpendicular to the direction of the incident light

R L = L E MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgaruWqVvNCPvMCG4uz 3bqee0evGueE0jxyaibaieYdi9WrpeeC0lXdh9vqqj=hEeea0xXdbb a9frFj0=OqFfea0dXdd9vqaq=JfrVkFHe9pgea0dXdar=Jb9hs0dXd bPYxe9vr0=vr0=vqpWqaaeaaciWacmGadaGadeaaeaGaauaaaOqaai aadkfadaWgaaWcbaGaamitaaqabaGccqGH9aqpdaWcaaqaaiaadYea aeaacaWGfbWaaSbaaSqaaiabgwQiEbqabaaaaaaa@3D85@

Note 1 to entry: The coefficient of retroreflected luminance is particularly suitable for describing materials in sheet form.

Note 2 to entry: The coefficient of retroreflected luminance is expressed in candela per square metre per lux (cd·m−2·lx−1).

Note 3 to entry: This entry was numbered 845-04-98 in IEC 60050-845:1987.


fr
coefficient de luminance rétroréfléchie, m
quotient de la luminance, L, d'une surface rétroréflective plane dans la direction d'observation par l'éclairement, E MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWaamGadaGadeaabaGaaqaaaOqaaiaadweadaWgaaWcbaGaeyyPI4fabeaaaaa@37F5@ , du rétroréflecteur dans un plan perpendiculaire à la direction de la lumière incidente

R L = L E MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgaruWqVvNCPvMCG4uz 3bqee0evGueE0jxyaibaieYdi9WrpeeC0lXdh9vqqj=hEeea0xXdbb a9frFj0=OqFfea0dXdd9vqaq=JfrVkFHe9pgea0dXdar=Jb9hs0dXd bPYxe9vr0=vr0=vqpWqaaeaaciWacmGadaGadeaaeaGaauaaaOqaai aadkfadaWgaaWcbaGaamitaaqabaGccqGH9aqpdaWcaaqaaiaadYea aeaacaWGfbWaaSbaaSqaaiabgwQiEbqabaaaaaaa@3D85@

Note 1 à l'article: Le coefficient de luminance rétroréfléchie est particulièrement utile pour décrire les matériaux en feuilles.

Note 2 à l'article: Le coefficient de luminance rétroréfléchie est exprimé en candela par mètre carré par lux (cd·m−2·lx−1).

Note 3 à l'article: Cet article était numéroté 845-04-98 dans l'IEC 60050-845:1987.


ar
معامل استضاءة إنعكاس إرتجاعي

de
Leuchtdichtekoeffizient bei Retroreflexion, m

it
coefficiente di luminanza retroriflessa

ko
역반사 발광 계수

ja
再帰反射輝度係数

pl
współczynnik luminancji powrotnej, m

pt
coeficiente de luminância retrorrefletida

zh
逆反射亮度系数

Publication date: 2020-12
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