BS-EN-ISO-9341-1998 BS-7208-10-1998.pdf
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1、BRITISH STANDARD BS EN ISO 9341:1998 BS 7208-10: 1998 Optics and optical instruments Contact lenses Determination of inclusions and surface imperfections for rigid contact lenses The European Standard EN ISO 9341:1998 has the status of a British Standard ICS 11.040.70 Licensed Copy: sheffieldun shef
2、fieldun, na, Wed Nov 15 13:00:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 9341:1998 This British Standard, having been prepared under the direction of the Health and Environment Sector Board, was published under the authority of the Standards Board and comes into effect on 15 September 1
3、998 BSI 05-1999 ISBN 0 580 30266 0 National foreword This British Standard is the English language version of EN ISO 9341:1998. It is identical with ISO 9341:1996. The UK participation in its preparation was entrusted by Technical Committee CH/78, Ophthalmic optics, to Subcommittee CH/78/4, Physical
4、 properties of contact lenses, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and Europe
5、an developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to internatio
6、nal publications with their corresponding European publications. The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by usin
7、g the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity
8、from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN ISO title page, page 2, the ISO title page, pages ii to iv, pages 1 to 3 and a back cover. This standard has been updated (see copyright date) and may have had amendments inc
9、orporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 15 13:00:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 9341:1998 BSI 05-1999i Contents Page Natio
10、nal forewordInside front cover Foreword2 Forewordiii Text of ISO 93411 Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 15 13:00:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 15 13:00:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPE
11、AN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 9341 July 1998 ICS 11.040.70 Descriptors: See ISO document English version Optics and optical instruments Contact lenses Determination of inclusions and surface imperfections for rigid contact lenses (ISO 9341:1996) Optique et instruments doptique L
12、entilles de contact Dtermination des inclusions et imperfections de surface des lentilles de contact rigides (ISO 9341:1996) Optik und optische Instrumente Kontaktlinsen Bestimmung der Einschlsse und Oberflchenfehler von formstabilen Kontaktlinsen (ISO 9341:1996) This European Standard was approved
13、by CEN on 22 June 1998. CEN members are bound to comply with the CEN/CENELEC Internal 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 standa
14、rds may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official 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 t
15、he Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United
16、 Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 93
17、41:1998 E Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 15 13:00:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 9341:1998 BSI 05-1999 2 Foreword The text of the International Standard from Technical Committee ISO/TC 172 “Optics and optical instruments” of the International Organization f
18、or Standardization (ISO) has been taken over as an European Standard by Technical Committee CEN/TC 170 “Ophthalmic optics”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement,
19、at the latest by January 1999, and conflicting national standards shall be withdrawn at the latest by January 1999. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czec
20、h Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard ISO 9341:1996 was approved by CEN as a European Standard without any
21、 modification. Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 15 13:00:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 15 13:00:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 9341:1998 ii BSI 05-1999 Contents Page Forewordiii 1Scope1 2Norm
22、ative references1 3Definitions1 4Test conditions1 5Recommended method1 Annex A (normative) Inspection method for assessment of inclusions and surface imperfections of rigid contact lenses2 Figure A.1 Arrangement of apparatus3 Table A.1 Rating scheme for designating the size of defects2 Licensed Copy
23、: sheffieldun sheffieldun, na, Wed Nov 15 13:00:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 9341:1998 BSI 05-1999iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Internatio
24、nal Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO
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