IEC IEC62906-1-2 Edition 1.02015-07 INTERNATIONAL STANDARD iside Laserdisplaydevices- Part1-2:Vocabularyand lettersymbols IEC 62906-1-2:2015-07(en) THISPUBLICATIONISCOPYRIGHTPROTECTED Copyright@2015IEC, Geneva, Switzerland All rights reserved. Unless othenwise specified, no part of this publication may be reproduced or utilized in any form or by eny means, electronic or mechanical, including photocopying and microfim, without permission in writing from either IEC or IEC's member National Committee in the country of the requester, If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local IEC member National Committee for further information. IEC Central Office Tel.: +41 22 919 02 11 3. rue de Varembe Fax: +41 22 919 03 00 CH-1211 Geneva 20 [email protected] Switzerliand www.iec.ch About the IEC The International Electrotechnical Commission (IEC) is the_ leading global organization that prepares and publishes International Standards for all electrical, electronic and related technologies. About IEC publications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latest edition, a corrigenda or an amendment might have been published. IEc Catalogue-webstore.lec.ch/catalogug Electropedia-www.electropedia.org The stard-alone appication for consuting the entire The world's leading online dictionaryof electronic and Standards, Technical Specifications, Technical Reports other definitions in Engish and French, with equivalent terms in 15 and documents. Available for PC, Mac OS, Android Tablets and additional languages._Also_known_as the International iPad. Electrotechrical Vocabulary (IEV) online, IEC publications search -www.lec.ch/searchpub IEC Glossary-std.lec.ch/glossary The advanced search enables to find IEC publications by a More_ than 60 000 electrotechnical terminology entries in variety.of criteria (reforence number, text, technical English and French extracted from the Terms and Definitions committee,.--). It also gives information on projects, replaced clause of IEC publications issued since 2002. Some entries ans withdrawn publications have been collected from eerlier publicetions of IEC TC 37, 77, 86 anc CISPR, IEc Just Published -webstore.lec.ch/justpublished Stay up to date on all new IEC publications. Just Pubished IEC Customer Service Centre -webstore.iec.chiesc details all new publications released. Availabie online and If you wish to give us your feedback on this pubication or also once a month by email. need further assistance, please contact the Customer Senvice Centre: [email protected]. Srurinhe Intarn 2- IEC62906-1-2:2015@IEC2015 CONTENTS FOREWORD 3 1 Scope .5 2 Terms, definitions, and abbreviations 2.1 Classification of terms. 2.2 Fundamental terms 2.3 Terms related to speckle. 5 2.4 Terms related to display category 2.5 Terms related to optical devices... 2.6 Terms related to light sources .. 8 3 Letter symbols (quantitysymbols /unit symbols) Annex A (informative) Categorization of speckle and speckle contrast ratio 9 A.1 Objective speckle. A.2 Subjective speckle.. A.3 Speckle contrast ratio .10 Bibliography... 12 Figure A.1 - Optical configuration to observe objective speckle. Figure A.2-Optical configuration to observe subjective speckle ..10 Figure A.3 Classification map of speckle 10 Table 1 Letter symbols