IES LM-75-19:2019

IES LM-75-19:2019

Approved Method: Guide to Goniometer Measurements and Types, and Photometric Coordinate Systems

€54.00

Details

This document provides definitions of spherical coordinate systems and goniophotometer types used to measure light sources. It does not address the use of goniophotometers to measure media or surfaces. The operating principles behind each type of goniophotometer are addressed, and a general guide to goniophotometer calibration, stray light elimination, and stray light correction is presented. A methodology for zeroing data when measuring upward light is also provided. In addition, the correspondences between relevant IES and CIE definitions are described.

Additional Info

Author Illuminating Engineering Society (IES)
Published by IES-USA
Document type Standard
Theme /subgroups/293
EAN ISBN 9780879950101
Number of pages 39
Replace IES LM-75-01
Keyword IES LM-75-19
ANSI Approved