ISO 22578-2:2024

International
Standard
ISO 22578-2
First edition
Graphical symbols — Safety colours
2024-02
and safety signs —
Part 2:
Measurement of photopic
luminance of phosphorescent
components used in a natural
disaster safety way guidance system
Reference number
ISO 22578-2:2024(en) © ISO 2024

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ISO 22578-2:2024(en)
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Published in Switzerland

© ISO 2024 – All rights reserved
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ISO 22578-2:2024(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test specification . 1
4.1 Test specimens.1
4.2 Conditioning.2
4.3 Ambient conditions.2
4.4 Irradiance, illuminance and luminance instrumentation .2
4.4.1 Irradiance instrumentation .2
4.4.2 Illuminance instrumentation .2
4.4.3 Luminance instrumentation .3
4.5 Excitation light conditions .3
4.6 Luminance measurements . .3
4.6.1 General .3
4.6.2 Telephotometer method.3
4.6.3 Contact method .3
4.6.4 Luminance recordings .4
4.7 Test report .
...