1、BSI Standards PublicationBS EN ISO 10322-2:2016Ophthalmic optics Semi-finished spectacle lens blanksPart 2: Specifications for progressive-powerand degressive-power lens blanks (ISO10322-2:2016)BS EN ISO 10322-2:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of
2、EN ISO10322-2:2016. It supersedes BS EN ISO 10322-2:2006 which iswithdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee CH/172/3, Spectacles.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purpo
3、rt to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016. Published by BSI StandardsLimited 2016ISBN 978 0 580 81059 6ICS 11.040.70Compliance with a British Standard cannot confer immunity fromlegal obligations.
4、This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2016.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 10322-2 March 2016 ICS 11.040.70 Supersedes EN ISO 10322-2:2006English
5、Version Ophthalmic optics - Semi-finished spectacle lens blanks - Part 2: Specifications for progressive-power and degressive-power lens blanks (ISO 10322-2:2016) Optique ophtalmique - Verres de lunettes semi-finis - Partie 2: Spcifications pour les verres progressifs et dgressifs (ISO 10322-2:2016)
6、 Augenoptik - Einseitig fertige Brillenglasblanks - Teil 2: Anforderungen an Gleitsicht-Brillenglasblanks und Brillenglasblanks fr degressive Brillenglser (ISO 10322-2:2016) This European Standard was approved by CEN on 2 January 2016. CEN members are bound to comply with the CEN/CENELEC Internal Re
7、gulations 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 me
8、mber. 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 the CEN-CENELEC Management Centre has the same status as the official versions.
9、 CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Polan
10、d, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in
11、 any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 10322-2:2016 EBS EN ISO 10322-2:2016EN ISO 10322-2:2016 (E) 3 European Foreword This document (EN ISO 10322-2:2016) has been prepared by Technical Committee ISO/TC 172 “Optics and photonics” in collaboration with
12、 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, at the latest by September 2016, and conflicting national standards shal
13、l be withdrawn at the latest by September 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 10322-
14、2:2006. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, Fra
15、nce, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 10322-2:2016 has been approved by CEN as EN
16、ISO 10322-2:2016 without any modification. BS EN ISO 10322-2:2016ISO 10322-2:2016(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Classification 15 Requirements 15.1 General . 15.2 Optical requirements for the finished surface . 15.2.1 General 15.2.2 Tolera
17、nces on the surface power . 25.2.3 Tolerances on the surface addition power for progressive-power lens blanks . 25.3 Geometrical tolerances 25.3.1 Tolerances on the size . 25.3.2 Tolerances on thickness . 35.4 Orientation requirement for polarizing lens blanks. 36 Test methods . 36.1 General . 36.2
18、Determination of surface power 36.3 Surface addition power measurement for progressive-power lens blanks . 36.3.1 General 36.3.2 Measurement 46.4 Inspection method for material and surface quality 47 Marking and identification 47.1 Marking . 47.1.1 Permanent marking 47.1.2 Optional non-permanent mar
19、king . 47.2 Identification required on the package 47.3 Information to be made available . 58 Reference to this part of ISO 10322 5Annex A (informative) Material and surface quality 6Annex B (informative) Conversion of surface power tolerances from the refractive index of the lens blank to that of a
20、n instruments fixed reference 7Annex C (informative) Addition power measurement by transmission 8Bibliography 9 ISO 2016 All rights reserved iiiContents PageBS EN ISO 10322-2:2016ISO 10322-2:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national
21、 standards bodies (ISO member bodies). The work of preparing International 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. Internationa
22、l organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended fo
23、r its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.or
24、g/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be
25、in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions r
26、elated to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information.The committee responsible for this document is ISO/TC 172, Optics and photonics, Subcommittee SC 7,
27、Ophthalmic optics and instruments.This fourth edition cancels and replaces the third edition (ISO 10322-2:2006), which has been technically revised.ISO 10322 consists of the following parts, under the general title Ophthalmic optics Semi-finished spectacle lens blanks: Part 1: Specifications for sin
28、gle-vision and multifocal lens blanks Part 2: Specifications for progressive-power and degressive-power lens blanksiv ISO 2016 All rights reservedBS EN ISO 10322-2:2016ISO 10322-2:2016(E)IntroductionCompared with previous editions of this part of ISO 10322, the scope now includes degressive-power se
29、mi-finished lens blanks. ISO 2016 All rights reserved vBS EN ISO 10322-2:2016BS EN ISO 10322-2:2016Ophthalmic optics Semi-finished spectacle lens blanks Part 2: Specifications for progressive-power and degressive-power lens blanks1 ScopeThis part of ISO 10322 specifies requirements for the optical a
30、nd geometrical properties of semi-finished lens blanks with finished progressive-power and degressive-power surfaces.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only t
31、he edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 7944, Optics and optical instruments Reference wavelengthsISO 13666, Ophthalmic optics Spectacle lenses Vocabulary3 Terms and definitionsFor the purposes of this doc
32、ument, the terms and definitions given in ISO 13666 apply.4 ClassificationSemi-finished lens blanks (shortened to lens blanks in the remainder of this part of ISO 10322 for easier reading) are classified according to the finished surface as follows:a) single-vision lens blanks;b) multifocal lens bla
33、nks;c) progressive-power and degressive-power lens blanks.5 Requirements5.1 GeneralThe tolerances shall apply at a temperature of 23 C 5 C.5.2 Optical requirements for the finished surface5.2.1 GeneralThe optical tolerances shall apply to the manufacturers stated values at the reference points of th
34、e lens blank at one of the reference wavelengths specified in ISO 7944.INTERNATIONAL STANDARD ISO 10322-2:2016(E) ISO 2016 All rights reserved 1BS EN ISO 10322-2:2016ISO 10322-2:2016(E)The optical tolerances in Table 1 and Table 2 are expressed as surface power values, in dioptres, in the refractive
35、 index of the material of the lens blank being measured.5.2.2 Tolerances on the surface powerThe tolerances on the surface power as specified in Table 1 shall apply at the distance reference point of progressive-power lenses and at the near reference point of degressive-power lenses and shall be mea
36、sured using the method described in 6.2.Table 1 Tolerances on the surface powerValues in dioptres (D)Surface powerTolerance on the surface powerTolerance on surface cylindri-cal poweraFF122+FF12-0,00 and 10,00 0,09 0,0910,00 and 15,00 0,12 0,12NOTE F1and F2are the maximum and minimum values of the s
37、urface power expressed in the refractive index of the material.aRelative to zero, or to any intended surface cylindrical power of the lens blanks design.5.2.3 Tolerances on the surface addition power for progressive-power lens blanksThe tolerances on the surface addition power as specified in Table
38、2 shall apply at the reference points and shall be measured using the method described in 6.3.Table 2 Tolerances on the surface addition powerValues in dioptres (D)Surface addition power Tolerance4,00 0,124,00 0,185.3 Geometrical tolerances5.3.1 Tolerances on the sizeThe sizes are classified as foll
39、ows:a) nominal size (dn): dimension(s), in millimetres, indicated by the manufacturer;b) effective size (de): actual dimension(s), in millimetres;c) usable size (du): dimension(s), in millimetres, of the area that is optically usable:1) effective size, de:dn 1 mm de dn+ 2 mm;2) usable size, du:du dn
40、 1 mm for dn 65 mm;du dn 2 mm for dn 65 mm.2 ISO 2016 All rights reservedBS EN ISO 10322-2:2016ISO 10322-2:2016(E)The tolerance on usable sizes does not apply to lens blanks for lenses with a carrier curve, such as lenticulars.5.3.2 Tolerances on thickness5.3.2.1 Centre thicknessThe centre thickness
41、, when measured at the geometric centre (unless otherwise stated by the manufacturer), shall be neither less than the minimum thickness stated by the manufacturer nor exceed this minimum thickness by more than 3 mm.5.3.2.2 Edge thicknessWhen measured at the point stated by the manufacturer, the edge
42、 thickness shall be neither less than the minimum thickness stated by the manufacturer nor exceed this minimum thickness by more than 3 mm.5.4 Orientation requirement for polarizing lens blanksFor polarizing lens blanks intended for sun glare attenuation, the plane of transmission shall be aligned t
43、o the permanent alignment reference markings at 90 3.6 Test methods6.1 GeneralAlternative measurement methods are acceptable if shown to perform equivalently to the reference test methods in 6.2 to 6.4.6.2 Determination of surface powerSurface power at the reference point shall be determined using a
44、 suitable instrument capable of measuring surface power, by reflection, with an accuracy that is appropriate to the tolerances listed in Table 1.The optical tolerances in Table 1 are expressed as surface power values, in dioptres, in the refractive index of the material of the lens blank being measu
45、red.NOTE 1 Some surface power instruments allow setting of the reference refractive index to match that of the actual lens blank being measured. Conversion might be required to establish the tolerance values if the lens blank is measured with equipment calibrated for a different reference refractive
46、 index (see Annex B).NOTE 2 It might be necessary to use a device that limits the aperture of measurement. The recommended range for the measurement aperture is 4 mm to 8 mm.6.3 Surface addition power measurement for progressive-power lens blanks6.3.1 GeneralSurface addition power shall be measured
47、using a suitable instrument capable of measuring surface power, by reflection, with an accuracy that is appropriate to the tolerances listed in Table 2. Measure the powers at the distance reference point and at the near reference point.NOTE The test method for determining addition power requires the
48、 measurement of surface addition power.When no surface measurement capability exists, an alternative method for addition power measurement using a focimeter is provided in Annex C. ISO 2016 All rights reserved 3BS EN ISO 10322-2:2016ISO 10322-2:2016(E)6.3.2 MeasurementThe surface chosen for measurem
49、ent shall be the progressive side. Measure the power at the near and distance reference points, and calculate the addition as the difference between the powers at these points. The powers at the distance and near reference points should be taken as the mean of the principal meridional surface powers.6.4 Inspection method for material and surface qualityMaterial and surface quality can be assessed using the method in Annex A.7 Marking and identification7.1 Marking7.1.1 Permanent markingThe lens blank shall be per
