IEC_TR_60825-10-2002.pdf

TECHNICALREPORTIECTR 60825-10First edition2002-02Safety of laser products Part 10:Application guidelines andexplanatory notes to IEC 60825-1Scurit des appareils laser Partie 10:Guide dapplication et notes explicativesconcernant la CEI 60825-1Reference numberIEC/TR 60825-10:2002(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Publication numberingAs from 1 January 1997 all IEC publications are issued with a designation in the60000 series.For example,IEC 34-1 is now referred to as IEC 60034-1.Consolidated editionsThe IEC is now publishing consolidated versions of its publications.For example,edition numbers 1.0,1.1 and 1.2 refer,respectively,to the base publication,thebase publication incorporating amendment 1 and the base publication incorporatingamendments 1 and 2.Further information on IEC publicationsThe technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.Information relating tothis publication,including its validity,is available in the IEC Catalogue ofpublications(see below)in addition to new editions,amendments and corrigenda.Information on the subjects under consideration and work in progress undertakenby the technical committee which has prepared this publication,as well as the listof publications issued,is also available from the following:IEC Web Site(www.iec.ch)Catalogue of IEC publicationsThe on-line catalogue on the IEC web site(www.iec.ch/catlg-e.htm)enablesyou to search by a variety of criteria including text searches,technicalcommittees and date of publication.On-line information is also available onrecently issued publications,withdrawn and replaced publications,as well ascorrigenda.IEC Just PublishedThis summary of recently issued publications(www.iec.ch/JP.htm)is alsoavailable by email.Please contact the Customer Service Centre(see below)forfurther information.Customer Service CentreIf you have any questions regarding this publication or need further assistance,please contact the Customer Service Centre:Email:custserviec.chTel:+41 22 919 02 11Fax:+41 22 919 03 00LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.TECHNICALREPORTIECTR 60825-10First edition2002-02Safety of laser products Part 10:Application guidelines andexplanatory notes to IEC 60825-1Scurit des appareils laser Partie 10:Guide dapplication et notes explicativesconcernant la CEI 60825-1PRICE CODE IEC 2002 Copyright-all rights reservedNo part of this publication may be reproduced or utilized in any form or by any means,electronic ormechanical,including photocopying and microfilm,without permission in writing from the publisher.International Electrotechnical Commission,3,rue de Varemb,PO Box 131,CH-1211 Geneva 20,SwitzerlandTelephone:+41 22 919 02 11 Telefax:+41 22 919 03 00 E-mail:inmailiec.ch Web:www.iec.chWFor price,see current catalogueCommission Electrotechnique InternationaleInternational Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 TR 60825-10 IEC:2002(E)CONTENTSFOREWORD.3INTRODUCTION.41Scope.52Object.53Reference documents.54Definitions.55Why laser radiation is hazardous.56Units.97Maximum permissible exposures(MPEs).98The classification system.128.1Laser product classification.128.1.1Class 1 and 1M laser products.128.1.2Class 2 and 2M laser products.138.1.3Class 3R laser products.138.1.4Class 3B laser products.138.1.5Class 4 laser products.138.1.6Product modification.138.2Procedures for hazard control.139Intrabeam viewing.159.1General.159.2Nominal ocular hazard distance(NOHD).189.3NOHD calculation CW output.219.4NOHD calculation for pulsed laser products.219.5NOHD for magnifying optics.239.6Specular reflections.269.7Atmospheric attenuation.2810Extended source viewing.2810.1General.2810.2Extended sources.2810.3Calculation of rNOHD.33Annex A(normative)Flowcharts.34LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.TR 60825-10 IEC:2002(E)3 INTERNATIONAL ELECTROTECHNICAL COMMISSION_SAFETY OF LASER PRODUCTS Part 10:Application guidelines and explanatory notesto IEC 60825-1FOREWORD1)The IEC(International Electrotechnical Commission)is a worldwide organization for standardization comprisingall national electrotechnical committees(IEC National Committees).The object of the IEC is to promoteinternational co-operation on all questions concerning standardization in the electrical and electronic fields.Tothis end and in addition to other activities,the IEC publishes International Standards.Their preparation isentrusted to technical committees;any IEC National Committee interested in the subject dealt with mayparticipate in this preparatory work.International,governmental and non-governmental organizations liaisingwith the IEC also participate in this preparation.The