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IES ANSI/IES LM-81-20 (R2023)

Photometric Testing of Skylights and Tubular Daylighting Devices Under Hemispheric Sky Conditions
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The publication 'Approved Method: Photometric Testing of Skylights and Tubular Daylighting Devices Under Hemispheric Sky Conditions', officially designated as ANSI/IES LM-81, is an authoritative technical standard and approved method published by the Illuminating Engineering Society (IES). Its primary objective is to establish uniform testing, measurement, and reporting procedures concerning photometric Testing of Skylights and Tubular Daylighting Devices Under Hemispheric Sky Conditions. By detailing rigorous protocols and industry consensus standards, this document serves as an essential resource for testing laboratories, manufacturers, and lighting engineers. It ensures that lighting applications and measurements in this domain are conducted with high accuracy, consistency, and alignment with modern technological advancements.
SDO IES: Illuminating Engineering Society
Document Number LM-81
Publication Date Jan. 1, 2020
Language en - English
Page Count 26
Revision Level
Supercedes
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