1、ICS 11.040.70Optics and optical instrumentsTest lenses for calibration of focimetersPart 1: Test lenses for focimeters used for measuring spectacle lenses(ISO 9342-1:2005)English version of DIN EN ISO 9342-1Optik und optische Instrumente Prfglser zur Kalibrierung von Scheitelbrechwert-Messgerten Tei
2、l 1:Prfglser fr Scheitelbrechwert-Messgerte fr die Messung von Brillenglsern (ISO 9342-1:2005)National forewordThis standard has been published in accordance with a decision taken by CEN/TC 170 to adopt, withoutalteration, International Standard ISO 9342-1 as a European Standard.The responsible Germ
3、an body involved in its preparation was the Normenausschuss Feinmechanik undOptik (Optics and Precision Mechanics Standards Committee).The DIN Standard corresponding to the International Standard referred to in clause 2 of the EN is as follows:ISO Standard DIN StandardISO 7944 DIN EN ISO 7944Amendme
4、ntsThis standard differs from DIN EN ISO 9342, December 1998 edition, as follows:a) The scope of the standard has been restricted to cover only focimeters used for measuring spectaclelenses. Focimeters for the measurement of contact lenses are dealt with in DIN EN ISO 9342-2.b) Subclauses A.5 to A.7
5、 specifying the manufacture of test lenses and the calculation of expected errorshave been amended.c) The content of the revised European/International Standard has been adopted in its entirety.Previous editionsDIN EN ISO 9342: 1998-12DIN 58206-1: 1968-11, 1983-01DIN 58206-2: 1983-01DIN 58206-3: 196
6、8-11, 1977-11National Annex NA(informative)BibliographyDIN EN ISO 7944 Optics and optical instruments Reference wavelengths (ISO 7944:1998)DEUTSCHE NORM August 2005DIN EN ISO 9342-1 No part of this standard may be reproduced without the prior permission ofDIN Deutsches Institut fr Normung e.V., Berl
7、in. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).Supersedes DIN EN ISO 9342,December 1998 edition.English price group 10www.din.dewww.beuth.de9658209Continued overleaf.Document comprises 12 pages.11.05English versionICS 11.040.70 Supersed
8、es EN ISO 9342:1998.Optics and optical instrumentsTest lenses for calibration of focimetersPart 1: Test lenses for focimeters used for measuring spectacle lenses(ISO 9342-1:2005) 2005. CEN All rights of exploitation in any form and by any meansreserved worldwide for CEN national members.Ref. No. EN
9、ISO 9342-1:2005 EOptik und optische Instrumente Prfglser zur Kalibrierung von Schei-telbrechwert-Messgerten Teil 1:Prfglser fr Scheitelbrechwert-Messgerte fr die Messung von Bril-lenglsern (ISO 9342-1:2005)This European Standard was approved by CEN on 2005-04-04.CEN members are bound to comply with
10、the CEN/CENELEC Internal Regulationswhich stipulate the conditions for giving this European Standard the status of anational standard without any alteration.Up-to-date lists and bibliographical references concerning such national stand-ards may be obtained on application to the Management Centre or
11、to anyCEN member.The European Standards exist in three official versions (English, French, German).A version in any other language made by translation under the responsibility of aCEN member into its own language and notified to the Management Centre hasthe same status as the official versions.CEN m
12、embers are the national standards bodies of Austria, Belgium, Cyprus, theCzech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands,Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
13、, andthe United Kingdom.EN ISO 9342-1May 2005Management Centre: rue de Stassart, 36 B-1050 BrusselsEuropean Committee for StandardizationComit Europen de NormalisationEuropisches Komitee fr NormungOptique et instruments doptique Verres talons pour ltalonnage desfrontofotomtres Partie 1: Verrestalons
14、 pour frontofotomtres pour lemesurage des verres de lunettes(ISO 9342-1:2005)Page 2EN ISO 9342-1:2005ForewordInternational StandardISO 9342-1:2005 Optics and optical instruments Test lenses for calibration of focimeters Part 1: Testlenses for focimeters used for measuring spectacle lenses,which was
15、prepared by ISO/TC 172 Optics and optical instruments of the International Organization forStandardization, has been adopted by Technical Committee CEN/TC 170 Ophthalmic optics, the Secretariatof which is held by DIN, as a European Standard.This European Standard shall be given the status of a natio
16、nal standard, either by publication of an identicaltext or by endorsement, and conflicting national standards withdrawn, by November 2005 at the latest.This document supersedes EN ISO 9342:1998.In accordance with the CEN/CENELEC Internal Regulations, the national standards organizations of the follo
17、w-ing countries are bound to implement this European Standard:Austria, Belgium, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal,Slovakia, Slovenia, Spain,
18、Sweden, Switzerland, and the United Kingdom.Endorsement noticeThe text of the International Standard ISO 9342-1:2005 was approved by CEN as a European Standard withoutany modification.Page 3EN ISO 9342-1:2005Page 4EN ISO 9342-1:2005Page 5EN ISO 9342-1:2005Page 6EN ISO 9342-1:2005Page 7EN ISO 9342-1:2005Page 8EN ISO 9342-1:2005Page 9EN ISO 9342-1:2005Page 10EN ISO 9342-1:2005Page 11EN ISO 9342-1:2005
