1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 1938:2010Personal eye protection Goggles for motorcycle andmoped usersBS EN 1938:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN
2、1938:2010. Itsupersedes BS EN 1938:1999 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PH/2, Eye protection.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include al
3、l the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2010ISBN 978 0 580 59741 1ICS 13.340.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Str
4、ategy Committee on 30 September 2010.Amendments issued since publicationDate Text affectedBS EN 1938:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1938 July 2010 ICS 13.340.20 Supersedes EN 1938:1998English Version Personal eye protection - Goggles for motorcycle and moped users Protectio
5、n 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 the CEN/CENELEC Internal Regulations which stipulate
6、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 Centre or to any CEN member. This European Standard exist
7、s 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 versions. CEN members are the national standards bo
8、dies 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, Slovakia, Slovenia, Spain, Sweden, Switzerland and United K
9、ingdom. 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 for CEN national Members. Ref. No. EN 1938:2010: EBS E
10、N 1938:2010EN 1938:2010 (E) 2 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 Lens requirements .
11、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 Refractive powers . 135.5
12、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 . 165.10 Resistance to
13、 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 transmittance and relative visu
14、al 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 . 25Annex F (informative) I
15、mpact resistance level Use recommendations 27Annex G (informative) Uncertainty of measurement and results interpretation 28BS EN 1938:2010EN 1938:2010 (E) 3 Annex H (informative) Significant technical changes between this European Standard and the previous edition . 30Annex ZA (informative) Relation
16、ship between this European Standard and the Essential Requirements of EU Directive 89/686/EEC Personal Protective Equipment 32Bibliography 34BS EN 1938:2010EN 1938:2010 (E) 4 Foreword This document (EN 1938:2010) has been prepared by Technical Committee CEN/TC 85 “Eye protective equipment”, the secr
17、etariat 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 withdrawn at the latest by January 2011. Attention is d
18、rawn 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 relationship with EU Directive(s), see informative Annex
19、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, Denmark, Estonia, Finland, Fr
20、ance, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 1938:2010EN 1938:2010 (E) 5 1 Scope This European Standard specifies requirement
21、s 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 exclusion. The goggles for official races and competitions a
22、re 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 latest edition of the referenced document (including
23、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 from products intended to come into direct and prolong
24、ed 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 11664-2:2007, Colorimetry Part 2: CIE standard illuminants
25、 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 Standard. Goggles can be provided with different oculars. 4
26、.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 Any materials (or combination of materials) may be us
27、ed, provided they meet the requirements of this European Standard. BS EN 1938:2010EN 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 reaction amongst a significant proportion of users. Examp
28、les 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 innocuousness of materials: materials specifications; safet
29、y 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 reproduction or mutagenic investigations on the materials
30、; 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 goggle is justified. Particular attention should be paid to t
31、he 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 tested according to EN 1811 for nickel release. The release o
32、f 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 contact surfaces made of soft flexible material. The retainin
33、g 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 being permanently deformed. The verification of this requ
34、irement 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 significantly. The verification of this requirement shall
35、 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 necessary rate of air exchange and the design of the ventilati
36、on 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 field of vision is defined in conjunction with the approp
37、riate 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 head-form. The horizontal axis shall be parallel to and 0,
38、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 ellipses shall be 25,0 mm. The centre distance (d) of the
39、 two ellipses shall be d = c + 20 mm, where c is the pupillary distance. The pupillary BS EN 1938:2010EN 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 the manufacturer. The test shall be carried out in accordance w
40、ith 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 the manufacturer. BS EN 1938:2010EN 1938:2010 (E) 8 Table 1 Gen
41、eral 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 VerticalD Base out Base in 0,12 0,12 1,00 0,25 0,25 Difference betw
42、een 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 coefficient Single lens goggles: 1 cd/m/lx Multiple lens goggles: 2
43、 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 this table. 4.6.2.2 Permissible transmittance and filter categories
44、 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 values of not more than 2 % (absolute) is permitted between the cate
45、gories 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 transmittance values are generally used. These two values correspo
46、nd 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 specifies the mandatory UV requirements for oculars for goggles for
47、 motorcycle and moped users. Oculars for which the enhanced infrared absorption is claimed, shall meet the requirements of the last column of Table 2. BS EN 1938:2010EN 1938:2010 (E) 9 Table 2 Permissible transmittance for oculars Filter category Mandatory requirements Ultraviolet Spectral range Vis
48、ible Spectral range Enhanced infrared absorption aMaximum value of spectral transmittance F() Maximum value of solar UVA transmittance SUVA() Range of luminous transmittance VMaximum value of solar infrared transmittance SIR280 nm to 315 nm 315 nm to 350 nm 315 nm to 380 nm 0 0,1 . VVV80 % to 100 %
49、V1 0,1 . VVV43 % to 80 % V2 0,1 . VVV18 % to 43 % VaOnly applicable to goggles recommended by the manufacturer as a protection against infrared radiation. In case of oculars with a luminous transmittance of less than 75 % the manufacturer shall include in the information to be supplied the warning: “Not suitable for night driving or twilight condition”. 4.6.2.3 Special transmittance requirements and claimed transmittance proper
