1、December 2010 Translation by DIN-Sprachendienst.English price group 15No 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).I
2、CS 13.340.20!$ld3“1736516www.din.deDDIN EN 1938Personal eye protection Goggles for motorcycle and moped usersEnglish translation of DIN EN 1938:2010-12Persnlicher Augenschutz Schutzbrillen fr Motorrad- und MopedfahrerEnglische bersetzung von DIN EN 1938:2010-12Protection individuelle de loeil Lunett
3、es-masques pour motocyclistes et cyclomotoristesTraduction anglaise de DIN EN 1938:2010-12SupersedesDIN EN 1938:1998-12www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.3612.10 DIN EN 1938:2010-12 A comma is used as the decimal marke
4、r. National foreword This standard has been prepared by Technical Committee CEN/TC 85 “Eye protective equipment” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss Feinmechanik und Optik (Optics and Precision Mechanics Standards Committee),
5、Working Committee NA 027-01-01 AA Augenschutz. Amendments This standard differs from DIN EN 1938:1998-12 as follows: a) the scope has been extended to include goggles for use by all motorcycle and moped drivers, both on the road and for off-road sport or leisure. The previous standard excluded the o
6、ff-road use; b) the limit of the transmittance of the oculars for night driving has been changed from 80 % to 75 %. Previous editions DIN EN 1938: 1998-12 2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1938 July 2010 ICS 13.340.20 Supersedes EN 1938:1998English Version Personal eye protectio
7、n - Goggles for motorcycle and moped users Protection individuelle de loeil - Lunettes-masques pour motocyclistes et cyclomotoristes Persnlicher Augenschutz - Schutzbrillen fr Motorrad- und Mopedfahrer This European Standard was approved by CEN on 19 June 2010. CEN members are bound to comply with t
8、he 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 CEN Management Centr
9、e or 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 CEN Management Centre has the same status as the official
10、 versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovaki
11、a, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide fo
12、r CEN national Members. Ref. No. EN 1938:2010: E2 Contents Page Foreword 41 Scope 52 Normative references 53 Terms and definitions .54 Requirements .54.1 General 54.2 Design and manufacture .54.3 Materials .54.4 Sit and fit .64.5 Ventilation .64.6 Optical requirements .64.6.1 Field of vision .64.6.2
13、 Lens requirements .74.7 Non optical requirements .94.7.1 General 94.7.2 Impact resistance.94.7.3 Resistance to surface damage by fine particles . 104.8 Optional requirements Resistance to fogging 105 Testing . 105.1 General . 105.2 Conditioning and test conditions 115.3 Field of vision 115.4 Refrac
14、tive powers . 135.5 Transmittance . 135.5.1 General . 135.5.2 Luminous transmittance 135.5.3 Infrared transmittance 135.5.4 UV-transmittance 135.6 Reduced luminance coefficient . 145.7 Resistance to ultraviolet radiation 145.8 Impact resistance 155.9 Resistance to surface damage by fine particles .
15、165.10 Resistance to fogging 165.11 Visual inspection 165.12 Sit and fit 166 Information supplied by the manufacturer 167 Marking 17Annex A (normative) Photochromic sunglare oculars for use in twilight or at night . 18Annex B (normative) Spectral functions for the calculation of luminous transmittan
16、ce and relative visual attenuation coefficients (quotients) 19Annex C (normative) Spectral functions for the calculation of solar UV transmittance values 21Annex D (normative) Spectral function for the calculation of infrared transmittance 23Annex E (normative) Cut-on filter for UV filtering . 25Ann
17、ex F (informative) Impact resistance level Use recommendations 27Annex G (informative) Uncertainty of measurement and results interpretation 28EN 1938:2010 (E) DIN EN 1938:2010-12 3 Annex H (informative) Significant technical changes between this European Standard and the previous edition . 30Annex
18、ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 89/686/EEC Personal Protective Equipment 32Bibliography 34EN 1938:2010 (E) DIN EN 1938:2010-12 EN 1938:2010 (E) 4 Foreword This document (EN 1938:2010) has been prepared by Technical Committee
19、 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 by publication of an identical text or by endorsement, at the latest by January 2011, and conflicting national standards shall be withdraw
20、n at the latest by January 2011. 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 1938:1998. For relationsh
21、ip with EU Directive(s), 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
22、, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 1938:2010-12 EN 1938:2010 (E) 5
23、1 Scope This European Standard specifies requirements and test methods for goggles for use by all motorcycle and moped drivers and passengers, intended for eye-protection during the use of motorcycle and moped, both on the road and for off-road sport or leisure use, subject to the following exclusio
24、n. The goggles for official races and competitions are not included within the scope of this standard. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the l
25、atest edition of the referenced document (including any amendments) applies. EN 165:2005, Personal eye-protection Vocabulary EN 167:2001, Personal eye-protection Optical test methods EN 168:2001, Personal eye-protection Non-optical test methods EN 1811, Reference test method for release of nickel fr
26、om products intended to come into direct and prolonged contact with the skin EN 1836:2005+A1:2007, Personal eye-equipment Sunglasses and sunglare filters for general use and filters for direct observation of the sun ISO 11664-1:2007, Colorimetry Part 1: CIE standard colorimetric observers ISO 11664-
27、2:2007, Colorimetry Part 2: CIE standard illuminants 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 165:2005 and EN 1836:2005+A1:2007 apply. 4 Requirements 4.1 General All the samples tested shall comply with the requirements of this European Standar
28、d. Goggles can be provided with different oculars. 4.2 Design and manufacture Goggles shall be free from projections, sharp edges or other defects which are likely to cause discomfort or injury during use. The verification of this requirement shall be made according to 5.11 and 5.12. 4.3 Materials A
29、ny materials (or combination of materials) may be used, provided they meet the requirements of this European Standard. DIN EN 1938:2010-12 EN 1938:2010 (E) 6 No parts of the goggles which are in contact with the wearer shall be made of materials that are known to cause irritation, allergic or toxic
30、reaction amongst a significant proportion of users. Examples for documents which can be presented as evidence of chemical innocuousness are given in the note below. NOTE The following list of documents is given for information and as examples of documents that can be examined when checking on the in
31、nocuousness of materials: materials specifications; safety data sheets relating to the materials; information relating to the suitability of the materials for use with food, in medical devices, or other relevant applications; information relating to toxicological, allergenic, carcinogenic, toxic to
32、reproduction or mutagenic investigations on the materials; information relating to ecotoxicological and other environmental investigations on the materials. The examination of documents or of the goggles shall determine whether the claim that the materials are suitable for use in the protective gogg
33、le is justified. Particular attention should be paid to the presence of plasticisers, unreacted components, heavy metals, impurities and the chemical identity of pigments and dyes. All metallic materials which could come into prolonged contact with the skin (e.g. hinge, rim and bridge) shall be test
34、ed according to EN 1811 for nickel release. The release of nickel shall be less than 0,5 g/cm2/wk. 4.4 Sit and fit Goggles shall be so designed and manufactured that they will sit securely in position on the face when used as intended, and will adapt to the shape of the wearers face by means of cont
35、act surfaces made of soft flexible material. The retaining strap shall be designed to be flexible or adjustable and sit securely when fitted according to the manufacturers instructions. The retaining strap shall be capable of withstanding any stress which occurs during proper use without tearing or
36、being permanently deformed. The verification of this requirement shall be made according to 5.12. 4.5 Ventilation Design measures shall exist ensuring that the inside of the goggles is ventilated during use. Such measures shall be outside the oculars areas and shall not reduce the peripheral vision
37、significantly. The verification of this requirement shall be made with a visual inspection according to 5.11. When goggle are provided with opening to allow circulation of air, the vented portion shall be such that openings shall exclude spherical objects 1,5 mm in diameter or larger. NOTE The neces
38、sary rate of air exchange and the design of the ventilation openings depend heavily on the weather, speed of driving and the individual conditions (e.g. sweating), which means that generally applicable requirements cannot be stipulated. 4.6 Optical requirements 4.6.1 Field of vision The size of the
39、field of vision is defined in conjunction with the appropriate head-form described in Clause 17 of EN 168:2001. The goggles shall exhibit a minimum field of vision defined by the two ellipses in Figure 1 when placed and centred at a distance of 25 mm from the surface of the eyes of the appropriate h
40、ead-form. The horizontal axis shall be parallel to and 0,7 mm below the height of the line connecting the centres of the two eyes. The plane of the ellipses shall be parallel to the back flat portion of the head-form. The horizontal length of the ellipses shall be 32,0 mm, the vertical width of the
41、ellipses shall be 25,0 mm. The centre distance (d) of the two ellipses shall be d = c + 20 mm, where c is the pupillary distance. The pupillary DIN EN 1938:2010-12 EN 1938:2010 (E) 7 distance is 64 mm for the medium head-form and 54 mm for the small head-form, or it may be specified differently by t
42、he manufacturer. The test shall be carried out in accordance with 5.3. Dimensions in millimetres Figure 1 Definition of the field of vision 4.6.2 Lens requirements 4.6.2.1 General The lens requirements shall be as given in Table 1. The requirements apply to goggles with all the oculars declared by t
43、he manufacturer. DIN EN 1938:2010-12 EN 1938:2010 (E) 8 Table 1 General requirements for lenses Spherical refractive power Astigmatic refractive powerDifference in prismatic refractive power cm/m Permissible tolerances for refractive powers of mounted oculars D1 D22+D,m-1l D1- D2l D,m-1Horizontal D
44、VerticalD Base out Base in 0,12 0,12 1,00 0,25 0,25 Difference between the spherical powers of the left and right visual points Less than 0,18 D,m-1Luminous transmittance According to 4.6.2.2 Uniformity of luminous transmittance According to 4.1.3.1 of EN 1836:2005+A1:2007 Maximum reduced luminance
45、coefficient Single lens goggles: 1 cd/m/lx Multiple lens goggles: 2 cd/m/lx Quality of material and surface According to 4.4 of EN 1836:2005+A1:2007 Resistance to ultraviolet radiation After the testing according to 5.7, the maximum reduced luminance coefficient shall not exceed the values shown in
46、this table. 4.6.2.2 Permissible transmittance and filter categories There are three transmittance categories for oculars for goggles for motorcycle and moped users. The range of the luminous transmittance for these three categories is given by the values in Table 2. An overlap of the transmittance v
47、alues of not more than 2 % (absolute) is permitted between the categories 0,1 and 2. If the supplier declares a luminous transmittance value, the tolerance for the value is 3 % absolute for transmittance values. When describing the transmittance properties of photochromic filters, two categories for
48、 transmittance values are generally used. These two values correspond to the faded state and to the darkened state of the filter. In the case of gradient filters the transmittance value at the reference point is used to characterise the luminous transmittance / category of the oculars. Table 2 also
49、specifies the mandatory UV requirements for oculars for goggles for motorcycle and moped users. Oculars for which the enhanced infrared absorption is claimed, shall meet the requirements of the last column of Table 2. DIN EN 1938:2010-12 EN 1938:2010 (E) 9 Table 2 Permissible transmittance for oculars Filter category Mandatory requirements Ultraviolet Spectral range Visible Spectral range Enhanced infrared absorption aMaximum value of spe
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