1、BSI Standards PublicationBS EN ISO 8980-3:2013Ophthalmic optics Uncutfinished spectacle lensesPart 3: Transmittance specifications and testmethodsBS EN ISO 8980-3:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO8980-3:2013. It supersedes BS EN ISO 8980-3
2、:2004 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 purport to include all the necessaryprovisions of a cont
3、ract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 71017 9ICS 11.040.70Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the autho
4、rity of theStandards Policy and Strategy Committee on 31 October 2013.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8980-3 October 2013 ICS 11.040.70 Supersedes EN ISO 8980-3:2004English Version Ophthalmic optics - Uncut finished specta
5、cle lenses - Part 3: Transmittance specifications and test methods (ISO 8980-3:2013) Optique ophtalmique - Verres de lunettes finis non dtours - Partie 3: Spcifications relatives au facteur de transmission et mthodes dessai (ISO 8980-3:2013) Augenoptik - Rohkantige fertige Brillenglser - Teil 3: Tra
6、nsmissionsanforderungen und Prfverfahren (ISO 8980-3:2013) This European Standard was approved by CEN on 7 September 2013. 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 with
7、out 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 official versions (English, French, German). A version in any other
8、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, De
9、nmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITT
10、EE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8980-3:2013: EBS EN ISO
11、8980-3:2013EN ISO 8980-3:2013 (E) 3 Foreword This document (EN ISO 8980-3:2013) has been prepared by Technical Committee ISO/TC 172 “Optics and photonics“ in collaboration with Technical Committee CEN/TC 170 “Ophthalmic optics” the secretariat of which is held by DIN. This European Standard shall be
12、 given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2014, and conflicting national standards shall be withdrawn at the latest by October 2016. Attention is drawn to the possibility that some of the elements of this document m
13、ay 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 8980-3:2004. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are boun
14、d to implement this European Standard: 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, Poland, Portugal
15、, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 8980-3:2013 has been approved by CEN as EN ISO 8980-3:2013 without any modification. BS EN ISO 8980-3:2013ISO 8980-3:2013(E) ISO 2013 All rights reserved iiiContents PageForew
16、ord iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Symbols 45 Classification 46 Requirements 46.1 General . 46.2 General transmittance requirements 56.3 Spectral transmittance requirements of spectacle lenses intended for road use and driving 66.4 Additional transmittance requirem
17、ents for special types of spectacle lenses 66.5 Resistance to radiation . 77 Test methods . 87.1 General . 87.2 Spectral transmittance . 87.3 Luminous transmittance and relative visual attenuation coefficient (quotient) . 87.4 Ultraviolet transmittance . 87.5 Transmittance properties of photochromic
18、 spectacle lenses and photochromic specimens . 97.6 Test methods for polarizing spectacle lenses 117.7 Determination of resistance to radiation 138 Identification .14Annex A (normative) Spectral data for calculating relative visual attenuation quotients for incandescent signal lights 15Annex B (norm
19、ative) Calculation of solar UV transmittance values 20Annex C (normative) Cut-on filter for UV filtering 22Annex D (informative) Spectral data for calculating relative visual attenuation quotients for LED signal lights .25Annex E (informative) Spectral radiation risks 28Annex F (informative) Example
20、 of the calculation of luminous transmittance,V.29Bibliography .31BS EN ISO 8980-3:2013ISO 8980-3:2013(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is norma
21、lly 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, also take part in th
22、e 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 for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the
23、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. www.iso.org/directivesAttention is drawn to the possibility that some of the elements of this document may
24、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 in the Introduction and/or on the ISO list of patent declarations received. www.iso.org/patentsAny
25、trade name used in this document is information given for the convenience of users and does not constitute an endorsement.The committee responsible for this document is ISO/TC 172, Optics and photonics, Subcommittee SC 7, Ophthalmic optics and instruments.This third edition cancels and replaces the
26、second edition (ISO 8980-3:2003), which has been technically revised. In particular, the requirement in 6.3.2 for lenses intended for road use and driving has been amended with an extension of three years for the continued manufacture of existing products.ISO 8980 consists of the following parts, un
27、der the general title Ophthalmic optics Uncut finished spectacle lenses: Part 1: Specifications for single-vision and multifocal lenses Part 2: Specifications for progressive power lenses Part 3: Transmittance specifications and test methods Part 4: Specifications and test methods for anti-reflectiv
28、e coatings Part 5: Minimum requirements for spectacle lens surfaces claimed to be abrasion-resistantiv ISO 2013 All rights reservedBS EN ISO 8980-3:2013INTERNATIONAL STANDARD ISO 8980-3:2013(E)Ophthalmic optics Uncut finished spectacle lenses Part 3: Transmittance specifications and test methods1 Sc
29、opeThis part of ISO 8980 specifies requirements for the transmittance properties of uncut finished spectacle lenses and mounted pairs, including attenuation of solar radiation.This part of ISO 8980 is not applicable to spectacle lenses having particular transmittance or absorption characteristics pr
30、escribed for medical reasons; products where specific personal protective equipment transmittance standards apply; products intended for direct observation of the sun, such as for solar-eclipse viewing.NOTE Optical and geometric requirements for uncut finished spectacle lenses are specified in ISO 8
31、980-1 and ISO 8980-2, and for mounted lenses, in ISO 21987.2 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 the edition cited applies. For undated references, the late
32、st edition of the referenced document (including any amendments) applies.ISO 11664-1, Colorimetry Part 1: CIE standard colorimetric observersISO 11664-2, Colorimetry Part 2: CIE standard illuminantsISO 13666, Ophthalmic optics Spectacle lenses VocabularyISO 14889, Ophthalmic optics Spectacle lenses
33、Fundamental requirements for uncut finished lenses3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 13666 apply.NOTE 1 For the convenience of the reader, the following definitions have been reproduced from ISO 13666.NOTE 2 Absorptance, reflectance and t
34、ransmittance are usually expressed as percentages. The equations in this clause are written in this form. Although the definitions use integrals, in practice summation, typically at 1 nm, 5 nm or 10 nm intervals, is performed to calculate the various transmittances.3.1mean UV-A transmittanceUVAmean
35、transmittance between 315 nm and 380 nmUVA315 nmnmnmd= 100165380() % ISO 2013 All rights reserved 1BS EN ISO 8980-3:2013ISO 8980-3:2013(E)ISO 13666:2012, definition 15.3.13.2solar UV-A transmittanceSUVAmean of the spectral transmittance between 315 nm and 380 nm weighted by the solar radiation distr
36、ibution Es() at sea level, for air mass 2, and the relative spectral effectiveness function for UV radiation S() SUVAsnm380 nmsnmdd=1003153153() () ()() ()ESES880 nm% Note 1 to entry: The complete weighting function W() is the product of Es() and S() and is given in Table B.1.SOURCE: ISO 13666:2012,
37、 definition 15.3.23.3solar UV-B transmittanceSUVBmean of the spectral transmittance between 280 nm and 315 nm weighted by the solar radiation distribution ES() at sea level, for air mass 2, and the relative spectral effectiveness function for UV radiation S() SUVBs280 nm315 nms280 dd=100() () ()() (
38、)ESESnnm315 nm% Note 1 to entry: The complete weighting function W() is the product of Es() and S() and is given in Table B.1.SOURCE: ISO 13666:2012, definition 15.3.33.4luminous transmittanceVratio of the luminous flux transmitted by the lens or filter to the incident luminous flux VD380 nm780 nmD3
39、806565dd=()()()()()100VSVSnm780 nm% where() is the spectral transmittance of the spectacle lens;V() is the spectral luminous efficiency function for daylight (see ISO 11664-1);SD65() is the spectral distribution of radiation of CIE standard illuminant D65 (see ISO 11664-2).Note 1 to entry: The spect
40、ral values of the product of the spectral radiation distributions SD65() of the CIE standard illuminant D65 and the eyes spectral luminous efficiency function V() are given in Table A.2.2 ISO 2013 All rights reservedBS EN ISO 8980-3:2013ISO 8980-3:2013(E)SOURCE: ISO 13666:2012, definition 15.43.5rel
41、ative visual attenuation coefficient (quotient) for incandescent traffic signal light recognition/detectionQ-valueratio of the luminous transmittance of a tinted lens for the spectral radiant power distribution of the light emitted by a traffic signal signalto the luminous transmittance of the same
42、lens for CIE standard illuminant D65 (V)Q = signalVwheresignalis the luminous transmittance of the lens for the spectral radiant power distribution of the traffic signal light.Note 1 to entry: Q-values can be determined for each of blue, green, amber (yellow) and red signal lights. signalis given by
43、 the equation: signalS A380 nm780 nmSd=100() () () ()() (VSV )()%SA380 nm780 nmdwhereS() is the spectral transmittance of the traffic signal lens;SA() is the spectral distribution of radiation of CIE standard illuminant A (or 3 200 K light source for blue signal light) (see ISO 11664-2);Note 2 to en
44、try: The spectral values of the products of the spectral distributions SA() of the illuminant A, the spectral luminous efficiency function V() of the eye and the spectral transmittance S() of the traffic signal lens are given in Table A.1, where ESignal()=SA()S().Note 3 to entry: Calculations are cu
45、rrently based on the measured values of E() for traffic signal lights using incandescent quartz-halogen lamps. They previously used the product S() SA() of the spectral transmittance of the traffic signal filter and the spectral distribution of radiation of CIE standard illuminant A. Calculations us
46、ing the values for quartz-halogen lamps and LED signals will give different resultsNote 4 to entry: Adapted from ISO 13666:2012, definition 15.5.3.6polarizing efficiencyproperty of a polarizing lens, describing the percentage of the transmitted light that is polarised, defined by the equationP =+100
47、p,maxp,minp,maxp,min% where ISO 2013 All rights reserved 3BS EN ISO 8980-3:2013ISO 8980-3:2013(E)p,maxis the maximum value of luminous transmittance as determined with 100% linearly polar-ised radiation;p,minis the minimum value of luminous transmittance as determined with 100% linearly polar-ised r
48、adiation.Note 1 to entry: Adapted from ISO 13666:2012, definition 8.1.12.3.4 SymbolsThe symbols for the characteristic luminous transmittances of photochromic lenses are given in Table 1.Table 1 Symbols for the characteristic luminous transmittances of photochromic lensesSymbols Characteristic lumin
49、ous transmittancesV0Luminous transmittance in the faded state as reached at (23 2) C after specified condi-tioning.V1Luminous transmittance in the darkened state as reached at (23 2) C after specified irradiation simulating mean outdoor conditions.VWLuminous transmittance in the darkened state as reached at (5 2) C after specified irra-diation simulating outdoor conditions at
