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The e-ILV provides free access to all the terms and definitions contained in the international standard CIE S 017:2020 ILV: International Lighting Vocabulary, 2nd edition.

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17-29-128

direct solar illuminance

Ev,s

illuminance produced by direct sunlight on a horizontal surface on the Earth

Note 1 to entry: The direct solar illuminance is expressed in lux (lx = lm·m−2).

Note 2 to entry: This entry was numbered 17-321 in CIE S 017:2011.

Publication date: 2020-12
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