1、BRITISH STANDARDBS EN ISO 8980-2:2004 BS 2738-7:2004Incorporating Corrigendum No. 1Ophthalmic optics Uncut finished spectacle lenses Part 2: Specifications for progressive power lensesThe European Standard EN ISO 8980-2:2004 has the status of a British StandardICS 11.040.70g49g50g3g38g50g51g60g44g49
2、g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 8980-2:2004This British Standard was published under the authority of the Standards Policy and Strategy Committee on
3、 12 March 2004 BSI 2006ISBN 0 580 43538 5National forewordThis British Standard is the official English language version of EN ISO 8980-2:2004, including Corrigendum September 2006. It is identical with ISO 8980-2:2004. It supersedes BS EN ISO 8980-2:1997 which is withdrawn.The UK participation in i
4、ts preparation was entrusted by Technical Committee CH/172, Ophthalmic optics, to Subcommittee CH/172/3, Spectacles, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implemen
5、t international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does no
6、t purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European co
7、mmittee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO
8、foreword page, the ISO title page, pages ii to iv, pages 1 to 8, the Annex ZA page and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date Comments16708 Corrigendum No. 131 October 2006 Change t
9、o note in Table 4EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 8980-2February 2004ICS 11.040.70Supersedes EN ISO 8980-2:1997English versionOphthalmic optics - Uncut finished spectacle lenses - Part 2:Specifications for progressive power lenses (ISO 8980-2:2004)Optique ophtalmique - Verres de
10、 lunettes finis nondtours - Partie 2: Spcifications pour les verresprogressifs (ISO 8980-2:2004)Augenoptik - Rohkantige fertige Brillenglser - Teil 2:Anforderungen an Gleitsicht-Brillenglser (ISO 8980-2:2004)This European Standard was approved by CEN on 9 January 2004.CEN members are bound to comply
11、 with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Cent
12、re or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversi
13、ons.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerla
14、nd and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2004 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 8
15、980-2:2004 EIncorporating Corrigendum September 2006I NESO 98-08:22( 400E)2ForewordThis document (EN ISO 8980-2:2004) has been prepared by Technical Committee ISO/TC 172“Optics and optical instruments“ in collaboration with Technical Committee CEN/TC 170“Ophthalmic optics“, the secretariat of which
16、is held by DIN.This European Standard shall be given the status of a national standard, either by publication ofan identical text or by endorsement, at the latest by August 2004, and conflicting nationalstandards shall be withdrawn at the latest by August 2004.This document supersedes EN ISO 8980-2:
17、1997.According to the CEN/CENELEC Internal Regulations, the national standards organizations ofthe following countries are bound to implement this European Standard: Austria, Belgium,Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,Iceland, Ireland, Italy, Latvia,
18、Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.Endorsement noticeThe text of ISO 8980-2:2004 has been approved by CEN as EN ISO 8980-2:2004 without anymodifications.NOTE Normative references to International Stand
19、ards are listed in annex ZA (normative).EN ISO 89802:2004Reference numberISO 8980-2:2004(E)OSI 4002INTERNATIONAL STANDARD ISO8980-2Second edition2004-02-01Ophthalmic optics Uncut finished spectacle lenses Part 2: Specifications for progressive power lenses Optique ophtalmique Verres de lunettes fini
20、s non dtours Partie 2: Spcifications pour les verres progressifs EN ISO 89802:2004IS-0898 O2:(4002E) DPlcsid Fremia ihTs PDF file mya ctnoian emdebt dedyfepcaes. In ccacnadrow eitA hebods licnesilop gnic,y tihs file mirp eb yatnde iv roweb detu slahl ton ide ebtlnu deess teh typfecaes wihce era hml
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23、aem lertait gno it is f,dnuo plsaee ifnrom ttneC ehlar Secterirata ta teh serddaig sleb nevwo. ISO 4002 All irthgs erse.devr lnUeto sswrehise specified, on trap fo this lbupictaion maeb y cudorperro de tuilizi den yna form ro na ybm ynae,s lecetrinoc ro mceinahcla, incliduntohp gcoiypodna gn micrfoi
24、lm, wittuoh repmissii now nritign from ietI rehSa Ot tsserdda eh ebolw or ISOs memreb i ydobn the cnuotfo yr ttseuqer ehe.r ISO cirypothg fofice saCe tsopale 65 eneG 1121-HC 02 avleT. 4 + 10 947 22 1 11 xaF0 947 22 14 + 9 74 E-mial coirypthgis.o groWe bwww.is.o groii ISO 4002 Allr ithgsr esedevrIS-0
25、898 O2:(4002E) I SO 4002 All irthgs ersedevr iiiContents Page Foreword iv 1 Scope 1 2 Normative references . 1 3 Terms and definitions. 1 4 Classification. 2 5 Requirements 2 6 Test methods. 5 7 Marking. 6 8 Identification 7 9 Reference to this part of ISO 8980 7 Annex A (informative) Material and s
26、urface quality 8 EN ISO 89802:2004IS-0898 O2:(4002E) iv I SO 4002 All irthgs ersedevrForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out thr
27、ough 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, also take part in the work. ISO collabo
28、rates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Stand
29、ards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of
30、this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 8980-2 was prepared by Technical Committee ISO/TC 172, Optics and photonics, Subcommittee SC 7, Ophtalmic optics and instruments. This second edition cancels and re
31、places the first edition (ISO 8980-2:1996), which has been technically revised. ISO 8980 consists of the following parts, under the general title Ophthalmic optics Uncut finished spectacle lenses: Part 1: Specifications for single-vision and multifocal lenses Part 2: Specifications for progressive p
32、ower lenses Part 3: Transmittance specifications and test methods Part 4: Specifications and test methods for anti-reflective coatings Part 5: Minimum requirements for spectacle lenses claimed to be abrasion-resistant EN ISO 89802:2004INTENRATIONAL TSANDADR IS-0898 O2:(4002E)I SO 4002 All irthgs ers
33、edevr 1Ophthalmic optics Uncut finished spectacle lenses Part 2: Specifications for progressive power lenses 1 Scope This part of ISO 8980 specifies requirements for the optical and geometrical properties for uncut finished progressive spectacle lenses. 2 Normative references The following reference
34、d documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 7944, Optics and optical instruments Reference wavelengths ISO 8429,
35、 Optics and optical instruments Ophthalmology Graduated dial scale ISO 8598, Optics and optical instruments Focimeters ISO 13666, Ophthalmic optics Spectacle lenses Vocabulary ISO 14889:2003, Ophthalmic optics Spectacle lenses Fundamental requirements for uncut finished lenses 3 Terms and definition
36、s For the purposes of this document, the terms and definitions given in ISO 13666 as well as the following apply. 3.1 focimeter, focal point on axis FOA focimeter focimeter in which the focal point of the focimeter remains on the axis of the focimeter when the lens under test is measured at a point
37、of the lens where prism is not zero See Figure 1. NOTE Examples of this design include all manual focusing focimeters and some automatic focimeters. 3.2 focimeter, infinite on axis IOA focimeter focimeter in which the collimated beam coincides with the focimeter axis and the focal point of the focim
38、eter goes off the axis of the focimeter when the lens under test is measured at a point of the lens where the prism is not zero 1 egaPEN ISO 89802:2004EN ISO 89802:20041IS-0898 O2:(4002E) 2 I SO 4002 All irthgs ersedevrSee Figure 2. NOTE Some automatic focimeters use this design. Key 1 focimeters op
39、tical axis 2 lens 3 focimeter lens support 4 focal point on the optical axis Key 1 focimeters optical axis 2 lens 3 focimeter lens support 4 infinite on the optical axis Figure 1 FOA Focimeter Figure 2 IOA Focimeter 4 Classification Finished lenses are classified as follows: a) single-vision finishe
40、d lenses; b) multifocal finished lenses; c) progressive power finished lenses. 5 Requirements 5.1 General The tolerances shall apply at a temperature of 23 C 5 C. Pa2 egEN ISO 89802:2004EN ISO 89802:20042IS-0898 O2:(4002E) I SO 4002 All irthgs ersedevr 35.2 Optical requirements 5.2.1 General The opt
41、ical tolerances shall apply at the reference points of the lens at one of the reference wavelengths specified in ISO 7944. The as-worn position can result in the apparent power to the eye being different from that determined as a result of the focimeter measurement. If the manufacturer has applied c
42、orrections to compensate for the as-worn position, then the tolerances shall apply to the corrected value and this corrected value shall be stated by the manufacturer on the package or in an accompanying document (see 8.1). The measured addition power is principally influenced by the finished lens f
43、orm and power. In particular cases, e.g. oblique cylinders or high minus powers, the deviation of the measured addition power of finished progressive lenses can exceed the above mentioned tolerances. The manufacturer shall submit corrected values on request (see 8.1). 5.2.2 Tolerances on the focal p
44、ower of progressive lenses for the distance portion (back vertex power) 5.2.2.1 Focal power The focal power shall be determined using a focimeter complying with ISO 8598 and using the method described in 6.2 or an equivalent method. NOTE An ISO Technical Report is currently under preparation. This d
45、escribes those parameters affecting the accuracy and inter- and intra-instruments repeatability of measurement with focimeters, both in general and in relation to off-axis measurements, e.g. the near portion of multifocal and progressive power lenses. 5.2.2.2 Tolerances on the focal power of lenses
46、Spectacle lenses shall comply with the tolerances on the power of each principal meridian, A, and with the tolerances on the cylindrical power, B (see Table 1). Table 1 Tolerances on the focal power of lenses Values in dioptres1)Tolerance on the absolute cylindrical power, B Power of principal merid
47、ian with higher absolute focal power Tolerance on the focal power of each principal meridian, A W 0,00 and u 0,75 0,75 and u 4,00 4,00 and u 6,00 6,00 W 0,00 and u 6,00 0,12 0,12 0,18 0,18 0,25 6,00 and u 9,00 0,18 0,18 0,18 0,18 0,25 9,00 and u 12,00 0,18 0,18 0,18 0,25 0,25 12,00 and u 20,00 0,25
48、0,18 0,25 0,25 0,25 20,00 0,37 0,25 0,25 0,37 0,37 1) Dioptres (D) can also be represented by “dpt“ or “ and are expressed in reciprocal metres (m1). Page 3EN ISO 89802:2004EN ISO 89802:200435.2.2.3 Tolerances on the direction of cylinder axis The tolerances on the direction of the cylinder axis as
49、specified in Table 2 shall be measured using the method described in 6.3. The cylinder axes shall be specified in accordance with ISO 8429. Table 2 Tolerances on the direction of cylinder axis Absolute Cylindrical Power D u 0,50 0,50 and u 0,75 0,75 and u 1,50 1,50 Tolerance on the axis 7 5 3 2 5.2.3 Tolerances on the addition power The tolerances on the addition power as specified in Table 3 shall be measured using the
