BS EN ISO 21254-1:2011 BSl Standards Publication Lasers and laser-related eguipment Test methods for laser-induced damage threshold Part 1: Definitions and general principles (ISO 21254-1:2011) bsi. ..making excellence a habit BRITISH STANDARD BS ENISO 21254-1:2011 National foreword This British Standard is the UK implementation of EN ISO 21254-1:2011. Together with BS EN ISO 21254-2:2011, it supersedes withdrawn. The UK participation in its preparation was entrusted to Technical CommitteeCPW/172/9,Electro-opticalsystems. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. @BSI 2011 ISBN9780580529986 ICS 31.260 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Amendments issued sincepublication Date Text affected EN ISO 21254-1 EUROPEANSTANDARD NORMEEUROPEENNE EUROPAISCHENORM July 2011 ICS 31.260 Supersedes EN ISO 11254-1:2000, EN ISO 11254-2:2001 English Version Lasers and laser-related equipment - Test methods for laser induced damage threshold -Part 1: Definitions and general principles (ISO 21254-1:2011) Lasers et equipements associes aux lasers -Methodes Laser und Laseranlagen - Prufverfahren fur die d'essai du seuil d'endommagement provoque par laser- laserinduzierte Zerstorschwelle - Teil 1: Begriffe und Partie 1: Definitions et principes de base (ISO 21254- allgemeine Grundsatze (ISO 21254-1:2011) 1:2011) This European Standard was approved by CEN on14 July 2011. CEN members are bound to comply with the CEN/CENELEC Intemal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three oficial versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, cen EUROPEAN COMMITTEE FOR STANDARDIZATION COMITE EUROPEENDE NORMALISATION EUROPAISCHES KOMITEE FUR NORMUNG Management Centre:AvenueMarnix17,B-100oBrussels 2011CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21254-1:2011: E worldwide for CEN national Members. BSENISO21254-1:2011 ENISO21254-1:2011(E) Foreword photonics" in collaboration with Technical Committee CEN/TC 123"Lasers and photonics"the secretariat of which is held by DIN. text or by endorsement, at the latest by January 2012, and conflicting national standards shall be withdrawn at the latest by January 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent This document supersedes ENISO11254-1:2000, ENISO11254-2:2001. countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsementnotice The text of ISO21254-1:2011 has been approved by CEN as a EN ISO 21254-1:2011 without any modification BS EN ISO 21254-1:2011 ISO 21254-1:2011(E) Contents Page Foreword iv Introduction 1 Scope 2 Normative references.. 3 Terms and definitions 4