IEVref:845-24-104ID:
Language:enStatus: Standard
Term: coefficient of retroreflected luminance
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Symbol: RL
Definition: 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.


Publication date:2020-12
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