cie International ISO Standard IS0/CIE 23603 First edition Standard method of assessing 2024-10 the spectral quality of daylight simulators for visual appraisal and measurement of colour Méthode normalisée d'évaluation de la qualité spectrale des simulateurs de lumiere du jour pour le jugement visuel et la mesure des couleurs Reference number ISO/CIE23603:2024(en) @ ISO/CIE 2024 IS0/CIE 23603:2024(en) COPYRIGHTPROTECTEDDOCUMENT IS0/CIE2024 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester ISO copyright office CIE Central Bureau CP 401 : Ch. de Blandonnet 8 BabenbergerstrafBe 9/9A·A-1010 Vienna CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Phone: +431714 3187 Fax:+41227490947 Email: [email protected] Email: [email protected] Website: www.iso.org Website: www.cie.co.at Published in Switzerland @ IS0/CIE 2024 - All rights reserved i IS0/CIE 23603:2024(en) Contents Page Foreword. iv Introduction Scope. 1 1 2 Normative references 1 3 Terms and definitions. 4 Requirements. 4 4.1 Chromaticity tolerance .4 4.2 Quality grade 5 Test methods. 4 5.1 Spectroradiometry 4 5.2 Computations. .5 5.2.1 Normalization. 5 Chromaticity deviation. .5 5.2.2 5.2.3 Virtual metameric pairs 5.2.4 Computing metamerism indices 5 6 Tables. 7 Bibliography. 19 @ IS0/CIE 2024 - All rights reserved iii