1、BRITISH STANDARD BS EN 172:1995 Incorporating Amendment Nos. 1 and 2 Personal eye protection Sunglare filters for industrial use The European Standard EN 172:1994, with the incorporation of amendments A1:2000 and A2:2001, has the status of a British Standard ICS 13.340.20 NO COPYING WITHOUT BSI PERM
2、ISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 172:1995 This British Standard, having been prepared under the direction of the Consumer Products and Services Sector Board, was published under the authority of the Standards Board and comes into effect on 15 May 1995 BSI 30 January 2002 The followin
3、g BSI references relate to the work on this standard: Committee reference PSM/2 Draft for comment 89/41144 DC ISBN 0 580 23956 X Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PSM/2, Eye protection, upon which the follow
4、ing bodies were represented. Association of Consulting Scientists British College of Optometrists British Foundry Association British Glass Manufacturers Confederation British Plastics Federation British Steel plc Department of Trade and Industry (National Physical Laboratory) Electricity Associatio
5、n Engineering Equipment and Materials Users Association Federation of Manufacturing Opticians Flat Glass Manufacturers Association Health and Safety Executive Industrial Safety (Protective Equipment) Manufacturers Association Institution of Gas Engineers Institution of Mechanical Engineers Instituti
6、on of Occupational Safety and Health Light Metal Founders Association Manufacturing Science Finance Ministry of Defence National Radiological Protection Board Safety Equipment Distributors Association Steel Casting Research and Trade Association Trades Union Congress Zinc Alloy Die Casters Associati
7、on Amendments issued since publication Amd. No. Date Comments 10942 August 2000 Clause 4.2.2 deleted, Annex ZA added 13373 30 January 2002 Indicated by a sidelineBS EN 172:1995 BSI 30 January 2002 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 17
8、2 4BS EN 172:1995 ii BSI 30 January 2002 National foreword This British Standard has been prepared by Technical Committee PSM/2 and is the English language version of EN 172:1994, Personal eye-protection Sunglare filters for industrial use, including amendments A1:2000 and A2:2001, published by the
9、European Committee for Standardization (CEN). EN 172 was produced as a result of international discussions in which the United Kingdom took an active part. It should be noted that this standard is one of several standards for filters used in personal eye-protection, others being BS EN 169, BS EN 170
10、, BS EN 171. Like these other standards, this standard does not specify a complete eye-protector, and therefore does not replace BS 2724 Specification for sunglare eye-protectors for general use, which will be replaced by a separate BS EN (in course of preparation) for sunglasses and sunglare filter
11、s for general use (see clause 1 of this standard). Cross-references 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 us
12、ing 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 immunit
13、y from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 15 and a back cover. The BSI copyright displayed in this document indicates when the document was last issued. Sidelining in this document indicates
14、the most recent changes by amendment.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 172 December 1994 + A1 April 2000 + A2 August 2001 ICS 13.340.20 Descriptors: Accident prevention, eyes, radiation protection, solar radiation, sunlight, optical filters, designation, specifications, physical p
15、roperties, transmittance, tests, labelling English version Personal eye protection Sunglare filters for industrial use (includes amendments A1:2000 and A2:2001) Protection individuelle de loeil Filtres de protection solaire pour usage industriel (inclut les amendements A1:2000 et A2:2001) Persnliche
16、r Augenschutz Sonnenschutzfilter fr den betrieblichen Gebrauch (enthlt nderungen A1:2000 und A2:2001) This European Standard was approved by CEN on 1994-12-05. Amendment A1 was approved by CEN on 2000-03-07. Amendment A2:2001 was approved by CEN on 2001-06-29. CEN members are bound to comply with th
17、e 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 standards may be obtained on application to the Central Secretariat o
18、r 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 the Central Secretariat has the same status as the official vers
19、ions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisa
20、tion Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref. No. EN 172:1994 + A1:2000 + A2:2001 EEN 172:1994 BSI 30 January 2002 2 Foreword This European Standard was prepared by the Technical Committee CEN/TC 85, Eye-prote
21、ctive equipment, of which the Secretariat is held by AFNOR. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EC Directive(s). This European Standard shall be given the stat
22、us of a national standard, either by publication of an identical text or by endorsement, at the latest by June 1995, and conflicting national standards shall be withdrawn at the latest by June 1995. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement thi
23、s European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom. Foreword to Amendment A1 This Amendment EN 172:1994/A1:2000 to EN 172:1994 has been prepared by Technical
24、Committee CEN/TC 85, Eye protective equipment, the Secretariat of which is held by AFNOR. This Amendment to the European Standard EN 172:1994 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2000, and conflicting
25、 national standards shall be withdrawn at the latest by October 2000. This Amendment to the European Standard EN 172:1994 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(s). For rel
26、ationship with EU Directive(s), see informative Annex ZA, which is an integral part of this standard. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, De
27、nmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. Foreword to Amendment A2 This Amendment EN 172:1994/A2:2001 to the EN 172:1994 has been prepared by Technical Committee CEN/TC 85, Eye-prot
28、ective equipment, the Secretariat of which is held by AFNOR. This Amendment to the European Standard EN 172:1994 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2002, and conflicting national standards shall be
29、 withdrawn at the latest by February 2002. This Amendment to the European Standard EN 172:1994 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(s). According to the CEN/CENELEC Inter
30、nal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland,
31、 and the United Kingdom.EN 172:1994 BSI 30 January 2002 3 Contents Page Foreword 2 1S c o p e 4 2 Normative references 4 3 Designation and marking 4 4 Requirements 4 5T e s t m e t h o d 6 6 Filters not suitable for driving and road use 8 Annex A (informative) Use of sunglare filters 9 Annex B (norm
32、ative) Definitions 10 Annex C (normative) Standard illuminant D 12 Annex D (normative) Test for determining the axis of polarization 13 Annex E (informative) Test for determination of fatigue of photochromic materials 14 Annex F (informative) 14 Annex ZA (informative) Clauses of this European Standa
33、rd addressing essential requirements or other provisions of EU Directives 15 Figure 1 Symbol “Not suitable for driving and road use” 8 Figure D.1 Apparatus for determination of axis polarization 13 Figure F.1 14 Table 1 Permissible transmittance for filters without a requirement for infra-red protec
34、tion 5 Table 2 Permissible transmittance for filters with a requirement for infra-red protection 5 Table 3 Irradiance for testing the darkened state of photochromic lenses 7 Table 4 Measurement conditions for the different luminous transmittance values 7 Table A.1 Scale numbers and use 9 Table ZA.1
35、15EN 172:1994 4 BSI 30 January 2002 1 Scope This European Standard specifies the scale numbers, transmittances and related requirements for sunglare filters for industrial use. Other valid requirements for these types of filters are specified in prEN 166. Selection criteria and information on use of
36、 these filters are given in Annex A. This standard does not apply to filters for protection against radiation from artificial light sources such as those used in solaria. EN 170 applies for these filters. This standard does not apply to ski goggles for which a separate standard is in preparation or
37、for other types used for leisure activities. A separate standard for sunglasses and sunglare filters for general use is in preparation. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited a
38、t the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references, the latest edition o
39、f the publication referred to applies. prEN 165, Personal eye protection Vocabulary. prEN 166, Personal eye protection Specifications. prEN 167, Personal eye protection Optical test methods. prEN 168, Personal eye protection Non-optical test methods. EN 169, Personal eye protection Filters for weldi
40、ng and related techniques. EN 170, Personal eye protection Ultra-violet filter Transmittance requirements and recommended use. CIE Publication 15 Colorimetry. 3 Designation and marking A complete table of filter designation and marking is given in clauses 4 and 9 of prEN 166. The scale number of a s
41、unglare filter contains the code numbers 5 (filter with no requirement for protection in the infra-red) or 6 (filter with a requirement for protection in the infra-red) and the shade number of the filter (see clause 4 and Annex A.2). 4 Requirements The requirements of prEN 166 apply to sunglare filt
42、ers for industrial use. Only those requirements that are different from or supplement the prEN 166 specifications are given in the following. 4.1 Permissible transmittance and scale numbers 4.1.1 Filters with code number 5 See Table 1. 4.1.2 Filters with code number 6 See Table 2. 4.2 General transm
43、ittance requirements 4.2.1 Spectral transmittance Between 500 nm and 650 nm the spectral transmittance shall not be less than 0, 2 v . 4.2.2 deleted 4.2.3 Recognition of signal lights As sunglasses are often worn while driving, filters of scale numbers 5-1,1 to 5-3,1 and 6-1,1 to 6-3,1 shall meet th
44、e requirements for recognition of signal lights in addition to the protection requirements. The relative visual attenuation quotient for signal lights red, yellow, green and blue filters of these scale numbers shall not be less than 0,8.EN 172:1994 BSI 30 January 2002 5 Table 1 Permissible transmitt
45、ance for filters without a requirement for infra-red protection Table 2 Permissible transmittance for filters with a requirement for infra-red protection 4.3 Special transmittance requirements 4.3.1 Photochromic filters The luminous transmittance value of the filter in its clear state 0and after 15
46、min irradiation ldetermine the scale numbers. In both states, the requirements specified in 4.1.1 to 4.1.2 shall be met. For photochromic filters 0 / 1shall be 1,25. When tested in accordance with Annex E.3, the change in luminous transmittance value relative to that measured initially as described
47、in E.2, shall not be greater than 5 % for the clear state nor 20 % for the dark state. NOTE When checking photochromic filter materials for the other requirements of this standard, this test need not be repeated if corresponding results are available, e.g. from the manufacturer of the raw material.
48、4.3.2 Polarizing filters Where sunglasses are fitted with polarizing filters, these shall be fitted in the frame so that the plane of polarization does not deviate from the vertical, or the nominal direction if different from the vertical, by more than 3 . For polarizing filters, the ratio of the lu
49、minous transmittance values parallel and perpendicular to the plane of polarization shall be greater than 20:1. Scale number Ultraviolet spectral range Visible spectral range Maximum value of spectral transmittance ( ) Maximum mean value of spectral transmittance Range of luminous transmittance v from 280 nm to 315 nm over 315 nm to 350 nm from 315 nm to 380 nm from % to over % 5-1,1 a 100 80,0 5-1,4 80,0 58,1 5-1,7 0,1 v v v 58,1 43,2 5-2 43,2 29,1 5-2,5 29,1 17,8 5-3,1 0,01 v 0,5 v 0,5 v
