1、November 2015 English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 11.040.70!%GND“2364333www.din.d
2、eDIN EN ISO 12312-2Eye and face protection Sunglasses and related eyewear Part 2: Filters for direct observation of the sun (ISO 12312-2:2015);English version EN ISO 12312-2:2015,English translation of DIN EN ISO 12312-2:2015-11Augen- und Gesichtsschutz Sonnenbrillen und hnlicher Augenschutz Teil 2:
3、 Filter fr die direkte Beobachtung der Sonne (ISO 12312-2:2015);Englische Fassung EN ISO 12312-2:2015,Englische bersetzung von DIN EN ISO 12312-2:2015-11Protection des yeux et du visage Lunettes de soleil et articles de lunetterie associs Partie 2 : Filtres pour lobservation directe du soleil (ISO 1
4、2312-2:2015);Version anglaise EN ISO 12312-2:2015,Traduction anglaise de DIN EN ISO 12312-2:2015-11www.beuth.deDocument comprises 17 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.10.15 DIN EN ISO 12312-2:2015-11 2 A comma is
5、used as the decimal marker. National foreword This document (EN ISO 12312-2:2015) has been prepared by Technical Committee ISO/TC 94 “Personal safety Protective clothing and equipment”, Subcommittee SC 6 “Eye and face protection” in collaboration with Technical Committee CEN/TC 85 “Eye protective eq
6、uipment” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was DIN-Normenausschuss Feinmechanik und Optik (DIN Standards Committee Optics and Precision Mechanics), Working Committee NA 027-01-01 AA Augenschutz. Attention is drawn to the possibility that some of th
7、e elements of this document may be the subject of patent rights. DIN shall not be held responsible for identifying any or all such patent rights. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 12311 DIN EN ISO 12311 ISO 4007 DIN EN ISO
8、 4007 The present standard is closely related to DIN EN ISO 12312-1 Eye and face protection Sunglasses and related eyewear Part 1: Sunglasses for general use and DIN EN ISO 12311 Personal protective equipment Test methods for sunglasses and related eyewear. These standards have been prepared by CEN/
9、TC 85 in collaboration with ISO/TC 94/SC 6 and are intended to supersede the European Standard on sunglasses and related eyewear, EN 1836, Personal eye-equipment Sunglasses and sunglare filters for general use and filters for direct observation of the sun. National Annex NA (informative) Bibliograph
10、y DIN EN ISO 12311, Personal protective equipment Test methods for sunglasses and related eyewear DIN EN ISO 4007, Personal protective equipment Eye and face protection Vocabulary; Trilingual version EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 12312-2 June 2015 ICS 13.340.20 English Ver
11、sion Eye and face protection - Sunglasses and related eyewear - Part 2: Filters for direct observation of the sun (ISO 12312-2:2015) Protection des yeux et du visage - Lunettes de soleil et articles de lunetterie associs - Partie 2: Filtres pour lobservation directe du soleil (ISO 12312-2:2015) Auge
12、n- und Gesichtsschutz - Sonnenbrillen und hnlicher Augenschutz - Teil 2: Filter fr die direkte Beobachtung der Sonne (ISO 12312-2:2015) This European Standard was approved by CEN on 16 April 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the condition
13、s 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 member. This European Standard exists in
14、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. CEN members are the national standards
15、 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, Poland, Portugal, Romania, Slovakia, Sloveni
16、a, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION C O M I T EUR O P EN D E NOR M A L I S ATI O N EUR O P I S C HES KOM I T E E F R NOR M UNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form
17、 and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 12312-2:2015 E European foreword .31 Scope . 42 Normative references 43 Terms and definitions . 44 Requirements and associated test methods 44.1 Transmittance 44.1.1 General 44.1.2 Uniformity of luminous transmittance . 5
18、4.2 Material and surface quality 54.2.1 Requirements . 54.2.2 Test method 54.3 Mounting 54.3.1 General 54.3.2 Dimensions . 54.3.3 Material quality . 65 Labelling 6Annex A (informative) Use of filters for direct observation of the sun . 7Annex B (informative) Solar eclipse eye safety: Users guide239B
19、ibliography .14Contents PageAnnex ZA (informative) Relationship betw een this European Standard and the Essential Requirements of EU Directive 89/686/ EEC Per sonal protective equipment .132DIN EN ISO 12312-2:2015-11 EN ISO 12312-2:2015 (E) European foreword This document (EN ISO 12312-2:2015) has b
20、een prepared by Technical Committee ISO/TC 94 “Personal safety Protective clothing and equipment” in collaboration with Technical Committee CEN/TC 85 “Eye protective equipment” the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either
21、by publication of an identical text or by endorsement, at the latest by December 2015, and conflicting national standards shall be withdrawn at the latest by December 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/o
22、r CENELEC shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive. For relationship with EU Direct
23、ive, see informative Annex ZA, which is an integral part of this document. 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, De
24、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 the United Kingdom. Endorsement
25、notice The text of ISO 12312-2:2015 has been approved by CEN as EN ISO 12312-2:2015 without any modification. 3DIN EN ISO 12312-2:2015-11 EN ISO 12312-2:2015 (E) 1 ScopeThis part of ISO 12312 applies to all afocal (plano power) products intended for direct observation of the sun, such as solar eclip
26、se viewing.Information on the use of filters for direct observation of the sun is given in Annex A and Annex B.This part of ISO 12312 does not apply to the following:a) afocal (plano power) sunglasses and clip-ons for general use intended for protection against solar radiation;b) eyewear for protect
27、ion against radiation from artificial light sources, such as those used in solaria;c) eye protectors specifically intended for sports (e.g. ski goggles or other types);d) sunglasses that have been medically prescribed for attenuating solar radiation;e) prescription sunglass lenses.2 Normative refere
28、ncesThe 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 latest edition of the referenced document (including any amendments) applies.ISO
29、12311:2013, Personal protective equipment Test methods for sunglasses and related eyewearISO 4007, Personal protective equipment Eye and face protection Vocabulary3 Terms and definitionsFor the purposes of this document, the terms and the definitions given in ISO 4007 apply.4 Requirements and associ
30、ated test methods4.1 Transmittance4.1.1 GeneralThe transmittance requirements of filters for the direct observation of the sun are given in Table 1. Transmittance values shall be measured or calculated at the boxed centre of the filter for normal incidence, as described in ISO 12311:2013, 7.1.1, 7.1
31、.2, 7.3.2, 7.3.3, and 7.5.4DIN EN ISO 12312-2:2015-11 EN ISO 12312-2:2015 (E) Table 1 Transmittance requirements for filters for the direct observation of the sunMaximum luminous transmittance (v) 0,003 2 %Minimum luminous transmittance (v) 0,000 061 %Maximum solar UVB transmittance (SUVB) vMaximum
32、solar UVA transmittance (SUVA) vMaximum solar infrared transmittance (SIR) 3 %Uncertainty of measurements of transmittance shall not be greater than 25 % of the measured value.The measurement of spectral transmittance of filters with high optical density can be best accomplished with the use of a du
33、al-beam spectrophotometer and comparison beam attenuators. The comparison beam attenuator should be a physical barrier, such as a perforated mesh, equivalent to a known uniform level of absorption across the entire waveband of measurement.4.1.2 Uniformity of luminous transmittanceThe relative differ
34、ence in the luminous transmittance value between any two points of the filter shall not be greater than 10 % (relative to the higher value). This requirement shall apply within a circle 40 mm in diameter around the boxed centre or to the edge of the filter less the marginal zone 5 mm wide, whichever
35、 is greater.4.2 Material and surface quality4.2.1 RequirementsExcept in a marginal area 5 mm wide, filters shall be free from defects likely to impair vision in use, such as bubbles, scratches, inclusions, dull spots, pitting, scouring, pocking, scaling, and undulations. Metal coated filter material
36、s shall not exhibit more than one pinhole defect not greater than 200 m in average diameter within any 5 mm diameter circular zone.4.2.2 Test methodA filter shall be illuminated from one side by an intense white light source (e.g. projector beam or light table) and the opposite side viewed through a
37、 low power magnifying lens. Metal coated filters showing visible pinhole defects shall be examined in a light microscope at 25 to 40 magnification.NOTE A magnifying lens of 4 to 10 magnification can be used.4.3 Mounting4.3.1 GeneralFilters may be made with or without a mounting. If mounted, a filter
38、 shall be held securely so that it cannot be dislodged by normal handling or by gusts of wind. Mountings may be handheld or shaped in the form of spectacles to be worn on the face in front of any corrective (spectacle or contact) lenses worn by the user.4.3.2 DimensionsThe filter or filters and moun
39、ting assembly shall be of a size sufficient to cover both eyes of the user simultaneously and in no case shall have overall dimensions less than 115 mm in width and 35 mm in depth in the plane parallel to the facial plane. Spectacle shaped mountings may have a triangular cut-away area to accommodate
40、 the crest of the nose, not to exceed 15 mm in apical height and 35 mm width at the base and may have separate filters, one for each eye, provided that the overall dimensions are satisfied.5DIN EN ISO 12312-2:2015-11 EN ISO 12312-2:2015 (E) 4.3.3 Material qualityThe filter and mounting shall be free
41、 from roughness, sharp edges, projections, or other defects which could cause discomfort or injury during use. No part of the filter or mounting which is in contact with the wearer shall be made of materials which are known to cause any skin irritation.5 LabellingThe filter and/or its packaging shal
42、l show the following information in the language(s) of the country where the product is to be offered for sale:a) name and address of manufacturer of the product;b) instructions for use in looking at the sun or a solar eclipse;c) warnings that viewing the sun without an appropriate filter can result
43、 in permanent eye injury;EXAMPLE “Direct viewing of the sun is dangerous if the proper precautions are not taken. Adequate eye protection specifically designed for viewing the sun is essential and shall be worn so that no direct radiation from the sun can reach the eye other than that passing throug
44、h the filter.”d) warnings that filters that are damaged or separated from their mountings should be discarded;e) advice on storage, cleaning, and maintenance, as appropriate;f) obsolescence deadline or period of obsolescence, as appropriate.6DIN EN ISO 12312-2:2015-11 EN ISO 12312-2:2015 (E) Annex A
45、 (informative) Use of filters for direct observation of the sunFor the direct observation of the sun, only specially designed protective filters should be used. Welding filters are designed to protect the eyes against ultraviolet, visible, and infrared light whereas the filters for direct observatio
46、n of the sun need only to provide protection against visible light. Welding filters as specified in ISO 16321 with scale numbers 12 to 15 are equally suitable for use with the unaided eye, however, they should not be used in conjunction with telescopes (in front of the objective) for the observation
47、 of the sun. The selection of the welding filter scale number is a matter of personal preference in comfort (according to atmospheric conditions and personal glare sensitivity). Filters with category W12 should be adequate to protect the eyes, but the solar image can be uncomfortably bright. Some ob
48、servers might find that the solar image viewed through a W14 filter is too dim. Table A.1 compares the transmittance properties of welding (W) and solar filters. In the visible spectral range, the transmittance values are for luminous transmittance as specified in ISO 12311:2013, 7.1.2 and denoted a
49、s v.Table A.1 Comparison of transmittance properties (%) of solar and welding filtersFilter Category Ultraviolet spectral range Visible spectral range Infrared spectral range280 nm to 315 nm315 nm to 380 nmMaximum Minimum Maximum 780 nm to 1 400 nmSolar for direct observationvv0,003 2 0,000 061 3Welding W12 0,000 3 0,001 2 0,003 2 0,001 2 12Welding W13 0,000 3 0,000 44 0,001 2 0,000 44 8Welding W14 0,000 16 0,000 16 0,000 44 0,000 16 6Weldi
