ISO INTERNATIONAL STANDARD 7759 Second edition 2010-09-01 Anodizing of aluminium and its alloys Measurement of reflectance characteristics of aluminium surfaces using a goniophotometer or an abridged goniophotometer Anodisation de I'aluminium et de ses alliages - Mesurage des caracteristiques de reflectivite des surfaces d'aluminium a I'aide d'un goniophotometre normal ou simplifie Reference number ISO 7759:2010(E) @ ISO 2010 Provided by IHS from IHS Not for Resale ISO 7759:2010(E) PDFdisclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The IsO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below COPYRIGHTPROTECTEDDOCUMENT ISO2010 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either isO at the address below or ISO's member body in the country of the requester ISO copyright office Case postale 56 : CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ii @ISO2010-All rights reserved Provided by IHS permitted without license from IHS Not for Resale ISO 7759:2010(E) Contents Page Foreword Introduction 1 Scope 2 Normative references 3 Terms and definitions 4 Principle.. 5 Apparatus.. 6 Preparation and calibration of apparatus .... 6.1 General conditions .. 6.2 Geometric conditions.. 6.3 Spectral conditions 6.4 Calibration. 7 Procedure .6 8 Expression of results.. 8.1 8.2 Specular reflectance Rs 8.3 Distinctness of reflected image R; . 8.4 Narrow-angle haze H. 8.5 Wide-angle haze Hw 8.6 Diffuseness Rd : 8.7 Directionality D 9 Test report. Annex A (informative) Precision and accuracy of goniophotometers .8 Bibliography... .9 Iso 2010-All rights reserved Provided by IHS Not for Resale