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IES LM 75 2019

$27.08

ANSI/IES LM-75-19 – Approved Method: Guide to Goniometer Measurements and Types, and Photometric Coordinate Systems

Published By Publication Date Number of Pages
IES 2019 39
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This document is an update of LM-75-2001, which was reaffirmed in 2012. The document has been updated to reflect current use of goniophotometers in industry, including calibration methods and methodologies for correction of stray light. Updated in this document are definitions of goniophotometer types and coordinate systems for photometric measurement of light sources. This document supersedes any angular conventions presented in LM-72-1997. This document does not cover near-field goniometers.

IES LM 75 2019
$27.08