e-ILV

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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For the complete set of terms and definitions CIE S 017:2020 can be purchased from the CIE Webshop. Members of a CIE National Committee or Associate National Committee have access to a 66,7 % discount on the purchase price of the standard.

17-27-075

directional lamp

electric lamp having at least 80 % luminous flux within a solid angle of π sr (corresponding to a cone with an angle of 120°)

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Publication date: 2020-12
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