SIST EN 166:2002

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Personal eye-protection - SpecificationsProtection individuelle de l'oeil - SpécificationsPersönlicher Augenschutz - Anforderungen13.340.20Varovalna oprema za glavoHead protective equipmentICS:SIST EN 166:2002enTa slovenski standard je istoveten z:EN 166:200101-junij-2002SIST EN 166:2002SLOVENSKI
STANDARDSIST EN 166:19961DGRPHãþD







EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 166November 2001ICS 13.340.20Supersedes EN 166:1995English versionPersonal eye-protection - SpecificationsProtection individuelle de l'oeil - SpécificationsPersönlicher Augenschutz - AnforderungenThis European Standard was approved by CEN on 2 September 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 166:2001 E



EN 166:2001 (E)2ContentspageForeword.31Scope.42Normative references.43Terms and definitions.54Classification.54.1Function of eye-protectors.54.2Types of eye-protectors.54.3Types of ocular.65Designation of filters.66Design and manufacturing requirements.76.1General construction.76.2Materials.86.3Headbands.87Basic, particular and optional requirements.87.1Basic requirements.87.2Particular requirements.147.3Optional requirements.168Allocation of requirements, test schedules and application.178.1Requirements and test methods.178.2Test schedules for type examination.178.3Application of eye-protector types.179Marking.259.1General.259.2Ocular marking.259.3Frame marking.309.4Marking of eye-protectors where the frame and ocular form a single unit.3310Information supplied by the manufacturer.33Annex ZA
(informative)
Clauses of this European Standard addressing essential requirements orother provisions of EU Directives.35



EN 166:2001 (E)3ForewordThis document has been prepared by Technical Committee CEN/TC 85, "Eye-protective equipment", thesecretariat 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 orby endorsement, at the latest by May 2002, and conflicting national standards shall be withdrawn at the latest byMay 2002.This European Standard replaces EN 166:1995.This document has been prepared under a mandate given to CEN by the European Commission and the EuropeanFree Trade Association, and supports essential requirements of EU Directive(s).For relationship 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 followingcountries 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 and the United Kingdom.



EN 166:2001 (E)41 ScopeThis European Standard specifies functional requirements for various types of personal eye-protectors andincorporates general considerations such as: designation; classification; basic requirements applicable to all eye-protectors; various particular and optional requirements; allocation of requirements, testing and application; marking; information for users.The transmittance requirements for various types of filter oculars are given in separate standards (see clause 2).This European Standard applies to all types of personal eye-protectors used against various hazards, asencountered in industry, laboratories, educational establishments, DIY activities, etc. which are likely to damage theeye or impair vision, with the exception of nuclear radiation, X-rays, laser beams and low temperature infrared (IR)radiation emitted by low temperature sources.The requirements of this standard do not apply to eye-protectors for which separate and complete standards exist,such as laser eye-protectors, sunglasses for general use, etc. unless such standards make specific reference tothis standard.The requirements of this standard apply to oculars for welding and allied processes but do not apply to equipmentfor eye and face protection for welding and allied processes, requirements for which are contained in EN 175.Eye-protectors fitted with prescription lenses are not excluded from the field of application. The refractive powertolerances and other special characteristics dependent upon the prescription requirement are specified inEN ISO 8980-1 and EN ISO 8980-2.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 165, Personal eye-protection — Vocabulary.EN 167:2001, Personal eye-protection — Optical test methods.EN 168:2001, Personal eye-protection — Non-optical test methods.EN 169, Personal eye-protection — Filters for welding and related techniques — Transmittance requirements andrecommended utilisation.EN 170, Personal eye-protection — Ultraviolet filters —Transmittance requirements and recommended use.EN 171, Personal eye-protection — Infrared filters — Transmittance requirements and recommended use.EN 172, Personal eye-protection — Sunglare filters for industrial use.EN 175, Personal protection — Equipment for eye and face protection during welding and allied processes.



EN 166:2001 (E)5EN 379, Specification for welding filters with switchable luminous transmittance and welding filters with dualluminous transmittance.EN ISO 8980-1, Ophthalmic optics — Uncut finished spectacle lenses - Part 1: Specifications for single-vision andmultifocal lenses (ISO 8980-1:1996).EN ISO 8980-2, Ophthalmic optics — Uncut finished spectacle lenses
- Part 2: Specifications for progressivepower lenses (ISO 8980-2:1996).EN ISO 8980-3, Ophtalmic optics – Uncut finished spectacle lenses – Part 3 : Transmittance specifications and testmethods ( ISO 8980-3 :1999).3 Terms and definitionsFor the purpose of this European Standard, the terms and definitions given in EN 165 and the following apply.3.1visual centrethe point on the ocular corresponding to the intersection of the horizontal and vertical planes through the pupil ofthe appropriate head-form specified in clause 17 of EN 168:2001 when the eye-protector is fitted to it in accordancewith the manufacturers instructions4 Classification4.1 Function of eye-protectorsThe function of eye-protectors is to provide protection against: impacts of different severities; optical radiations; molten metals and hot solids; droplets and splashes; dust; gases; short circuit electric arc;or any combination of these.4.2 Types of eye-protectorsNOTERefer to definitions given in EN 165.4.2.1 Spectacles with or without lateral protection4.2.2 Goggles4.2.3 Face-shieldsNOTEFace-shields normally incorporate a suitable headband, browguard, helmet, protective hood or other appropriatemounting device.



EN 166:2001 (E)64.3 Types of ocular4.3.1 Mineral oculars (glass)4.3.1.1 Untoughened mineral oculars4.3.1.2Toughened mineral oculars, toughened chemically, thermally or by other processes to give superiorresistance to impact in comparison with untoughened mineral oculars.4.3.2 Organic oculars (plastic)4.3.3 Laminated ocularsOculars made in multiple layers joined together by a binder.NOTEAll types of oculars may be further classified into filtering types (for example according to EN 169, EN 170, EN 171,EN 172 and EN 379). They may also be classified as oculars with corrective effect and oculars without corrective effect. Theymay also have coatings on their surface(s) to give additional characteristics.5 Designation of filtersThe transmittance characteristics of a filter are represented by a scale number.The scale number is a combination of the code number and the shade number of the filter, joined together by adash.The scale number for welding filters does not include a code number, it comprises the shade number only.Table 1 gives the designation of the various types of filters specified in this European Standard.



EN 166:2001 (E)7Table 1 — Scale numbers for filtersWelding filtersUltraviolet filtersInfrared filtersFilters for sunglareNo numbercodeCodenumber 2Codenumber 3Codenumber 4Codenumber 5Codenumber 6Scale number1,22 – 1,23 – 1,24 – 1,25 – 1,16 – 1,11,42 – 1,43 – 1,44 – 1,45 – 1,46 – 1,41,73 – 1,74 – 1,75 – 1,76 – 1,723 – 24 – 25 – 26 – 22,53 – 2,54 – 2,55 – 2,56 – 2,533 – 34 – 35 – 3,16 – 3,143 – 44 – 45 – 4,16 – 4,14a53 - 54 - 55a64 - 66a74 – 77a84 – 894 – 9104 - 10111213141516NOTECode number key :2Ultraviolet filter, colour recognition may be affected ;3Ultraviolet filter, good colour recognition ;4Infra-red filter ;5Sunglare filter without infrared specification ;6Sunglare filter with infrared specification.6 Design and manufacturing requirements6.1 General constructionEye-protectors shall be free from projections, sharp edges or other defects which are likely to cause discomfort orinjury during use.



EN 166:2001 (E)86.2 MaterialsNo parts of the eye-protector which are in contact with the wearer shall be made of materials which are known tocause any skin irritation.6.3 HeadbandsHeadbands, when used as the principal means of retention, shall be at least 10 mm wide over any portion whichmay come into contact with the wearer’s head. Headbands shall be adjustable or self-adjusting.7 Basic, particular and optional requirementsAll eye-protectors shall meet the basic requirements given in 7.1.Furthermore, according to their intended use, eye-protectors shall, if appropriate, meet one or more of the particularrequirements given in 7.2.Optional requirements related to additional properties of eye-protectors are given in 7.3.7.1 Basic requirements7.1.1 Field of visionThe size of the field of vision is defined in conjunction with the appropriate head-form described in clause 17 ofEN 168:2001.Eye-protectors shall exhibit a minimum field of vision defined by the two ellipses in Figure 1 when placed andcentered at a distance of 25 mm from the surface of the eyes of the appropriate head-form. The horizontal axisshall be parallel to and 0,7 mm below the height of the line connecting the centres of the two eyes.The horizontal length of the ellipses shall be of 22,0 mm, the vertical width of the ellipses shall be 20,0 mm. Thecentre distance of the two ellipses shall be d = c + 6 mm, where c is the pupillary distance. The pupillary distance is64 mm for the medium head-form and 54 mm for the small head-form, if not specified differently by themanufacture.The test shall be carried out in accordance with clause 18 of EN 168:2001.Dimensions in millimetresFigure 1 — Definition of the field of vision



EN 166:2001 (E)97.1.2 Optical requirements7.1.2.1 Spherical, astigmatic and prismatic refractive powersThe refractive powers of oculars shall be measured by the reference methods specified in clause 3 ofEN 167:2001. This clause refers also to an optional method for use in specific circumstances; the details of thismethod are given in annex A of EN 167:2001.7.1.2.1.1 Unmounted oculars covering one eyeThe refractive power characteristics of unmounted oculars covering one eye shall be measured by the methodspecified in 3.1 of EN 167:2001 (non-corrective oculars), and by the methods specified in EN ISO 8980-3(corrective oculars).The permissible tolerances for oculars without corrective effect are given in Table 2.The permissible deviations for the vertex powers of oculars with corrective effect are specified in EN ISO 8980-1and EN ISO 8980-2. Oculars that comply with EN ISO 8980-1 and EN ISO 8980-2 shall be categorised as class 1.For class 2, the deviations in vertex refractions may be 0,06 m-1 higher than for class 1.Table 2 — Permissible tolerances for refractive powers of unmounted oculars without corrective effectcovering one eyeOptical classSpherical refractivepower2/)(21DDAstigmatic refractivepower21DDPrismatic refractivepowerm-1m-1cm/m1 0,060,060,122 0,120,120,12NOTED1 and D2 are the refractive powers in the two principal meridians.7.1.2.1.2 Mounted oculars and unmounted oculars covering both eyesThe refractive power characteristics of mounted oculars or unmounted oculars covering both eyes shall bemeasured by the method specified in 3.2 of EN 167:2001 at the visual centre of the ocular.The permissible tolerances for oculars without corrective effect are given in Table 3.The permissible deviations for vertex powers of oculars with corrective effect are as defined in 7.1.2.1.1. Deviationsthat would correspond to class 3 shall not be permitted.NOTEThe difference in prismatic refractive power specified for an eye-protector depends not only on the prismaticrefractive power of each ocular, but also on the position of the optical axis of the ocular in relation to the axis of vision, andtherefore the shape of the frame. It is therefore necessary to use replacement oculars for which the difference in prismaticpower remains within the permissible tolerance limits for the frame in question.



EN 166:2001 (E)10Table 3 — Permissible tolerances for refractive powers of mounted oculars without corrective effect andunmounted oculars without corrective effect covering both eyesOptical classSphericalrefractive power2/)(21DDAstigmaticrefractive power21DDDifference in prismatic refractive powerm-1m-1cm/mHorizontalVerticalBase outBase in1± 0,060,060,750,250,252± 0,120,121,000,250,253+ 0,12– 0,250,251,000,250,25NOTE1D and 2D are the refractive powers in the two principal meridians. For optical class 3 the axes ofthe principal meridians shall be parallel within
10°.7.1.2.1.3 Cover platesThe refractive powers of cover plates shall comply with the tolerances for optical class 1 given in Tables 2 and 3.7.1.2.2 Transmittance7.1.2.2.1 Oculars without filtering actionOculars intended to protect the eyes against mechanical or chemical hazards only, and cover plates, shall have aluminous transmittance greater than 74,4 % when measured as given in clause 6 of EN 167:2001 (based on CIEsource A (2856 K)).7.1.2.2.2 Oculars with filtering action (filters) and housings for oculars with filtering action.The transmittance of oculars with filtering action shall meet the requirements given in the specific standards relatingto the various types of ocular (see 7.2.1).Goggles and face-shields which claim to provide protection against optical radiation shall provide at least the samelevel of protection against optical radiation as given by a filter of any scale number declared usable with the eye-protector by the manufacturer or supplier. Testing shall be in accordance with clause 6 of EN 167:2001.7.1.2.2.3 Variations in transmittance (Oculars without filtering action are exempt from this requirement)7.1.2.2.3.1 Oculars without corrective effectVariations in luminous transmittance shall be measured in accordance with clause 7 of EN 167:2001.The relative variations of the luminous transmittance around the visual centre(s) P1 (and P2) shall not exceed thevalues of Table 4.The relative difference in luminous transmittance P3 between left and right eye shall not exceed the values ofTable 4 or 20 % whichever is greater.



EN 166:2001 (E)11Table 4 — Variations in luminous transmittanceLuminous transmittancePermissible relative variationless than%up to%%10017,8± 517,80,44± 100,440,023± 150,0230,0012± 200,00120,000023± 307.1.2.2.3.2 Oculars with corrective effect (prescription oculars)The requirements of 7.1.2.2.3.1 shall also apply to prescription oculars, with the provision that variations inluminous transmittance which are due to thickness variations inherent in the design of the ocular are not taken intoaccount, providing the luminous transmittance at no point deviates by more than a factor of 2,68 (one shadenumber) from its value at the visual centre.The IR and UV transmittance shall meet the requirements of the specified shade number at every point on theocular.7.1.2.3 Diffusion of lightThe diffusion of light shall be measured in accordance with one of the reference methods specified in clause 4 ofEN 167:2001.The maximum value of the reduced luminance factor shall be:lxmcd00,12for welding filters;lxmcd75,02for oculars used in eye-protectors against high speed particles;lxmcd50,02for all other oculars.7.1.3 Quality of material and surfaceExcept for a marginal area 5 mm wide, oculars shall be free from any significant defects likely to impair vision inuse, such as bubbles, scratches, inclusions, dull spots, pitting, mould marks, scouring, grains, pocking, scaling andundulation.The assessment shall be carried out in accordance with the method specified in clause 5 of EN 167:2001.7.1.4 Robustness7.1.4.1 Minimum robustnessThis requirement relates only to cover plates and oculars with filtering effect and need not be assessed if theseitems are intended to meet the requirements for increased robustness or resistance to high speed particles, inwhich case the requirements of 7.1.4.2 or 7.2.2 shall be met.The requirement for minimum robustness is satisfied if the ocular withstands the application of a 22 mm nominaldiameter steel ball with a force of (100 ± 2) N, when tested in accordance with clause 4 of EN 168:2001.



EN 166:2001 (E)12On so testing the following defects shall not occur:a) ocular fracture : an ocular shall be considered to have fractured if it cracks through its entire thickness into twoor more pieces, or if more than 5 mg of the ocular material becomes detached from the surface away from theone in contact with the ball, or if the ball passes through the ocular;b) ocular deformation : an ocular shall be considered to have been deformed if a mark appears on the whitepaper on the opposite side to the one on which the force is applied.7.1.4.2 Increased robustness7.1.4.2.1 Unmounted ocularsThe oculars shall withstand the impact of a 22 mm nominal diameter steel ball, of 43 g minimum mass, striking theocular at a speed of approximately 5,1 m/s, when tested in accordance with 3.1 of EN 168:2001.On so testing the following defects shall not occur:a) ocular fracture : an ocular shall be considered to have fractured if it cracks through its entire thickness into twoor more pieces, or if more than 5 mg of the ocular material becomes detached from the surface away from theone struck by the ball, or if the ball passes through the ocular;b) ocular deformation : an ocular shall be considered to have been deformed if a mark appears on the whitepaper on the opposite side to that struck by the ball.7.1.4.2.2 Complete eye-protectors and framesThe complete eye-protector or frame shall withstand the lateral and frontal impacts of a steel ball striking at aspecified speed.The diameter of the steel ball and the corresponding impact speed are given in Table 5.Table 5 — Requirements relating to increased robustness of complete eye-protectorsSpectaclesGogglesFace-shieldsSize, mass and speed of steelballFrontalimpactLateralimpactFrontalimpactLateralimpact22 mm nominal diameter steelball, of 43 g minimum mass, at aspeed of approximately 5,1 m/sThe test shall be in accordance with the method specified in 3.2 of EN 168:2001.If a spectacle is claimed to have lateral protection it shall not be possible for the ball to strike the lateral impactpoints without first striking the lateral protection.On so testing the following defects shall not occur:a) ocular fracture : an ocular shall be considered to have fractured if it cracks through its entire thickness into twoor more pieces, or if more than 5 mg of the ocular material becomes detached from the surface away from theone struck by the ball, or if the ball passes through the ocular;b) ocular deformation : an ocular shall be considered to have been deformed if a mark appears on the whitepaper on the opposite side to that struck by the ball;c) ocular housing or frame fracture : an ocular housing or frame shall be considered to have failed if it separatesinto two or more pieces, or if it is no longer capable of holding an ocular in position, or if an unbroken oculardetaches from the frame, or if the ball passes through the housing or frame;



EN 166:2001 (E)13d) lateral protection failure : the lateral protection shall be considered to have failed if it fractures through its entirethickness into two or more separate pieces, or if one or more particles become detached from the surfaceremote from the impact point, or if it allows the ball to penetrate completely, or if it partially or totally detachesfrom the eye-protector, or if its component parts become separated.7.1.5 Resistance to ageingNOTECover plates and glass oculars are exempt from these tests.
The exemption does not apply to coated or laminatedglass.7.1.5.1 Stability at an elevated temperatureAssembled eye-protectors shall show no apparent deformation when tested by the method specified in clause 5 ofEN 168:2001.7.1.5.2 Resistance to ultraviolet radiation (oculars only)Oculars shall be subjected to the test for resistance to ultraviolet radiation in accordance with the method specifiedin clause 6 of EN 168:2001.At the end of the test, oculars shall meet the following requirements.a) The relative change of luminous transmittance shall not be greater than the values specified in Table 6.If for welding filters the relative change of the luminous transmittance is larger than the values specified inTable 6 but the actual value of luminous transmittance remains within the range specified by its shade number,a second irradiation is performed in accordance with clause 6 of EN 168:2001
on the same sample. Therelative change of luminous transmittance due to the second irradiation shall not be greater than the valuesspecified in Table 6 and the actual value of luminous transmittance shall remain within the range specified byits shade number;b) The value of the reduced luminance factor shall not exceed the permissible limits given in 7.1.2.3.Table 6 — Permissible relative change in luminous transmittance following the ultraviolet radiation testLuminous transmittanceless thanup toPermissible relativechange%%%10017,8± 517,80,44± 100,440,023± 150,0230,0012± 200,00120,000023± 307.1.6 Resistance to corrosionAfter having undergone the test for resistance to corrosion specified in clause 8 of EN 168:2001, all metal parts ofthe eye-protector shall display smooth surfaces, free from corrosion, when they are examined by a trainedobserver.7.1.7 Resistance to ignitionEye-protectors shall be tested in accordance with the method specified in clause 7 of EN 168:2001 and shall beconsidered to be satisfactory if no part of the eye-protector ignites or continues to glow after removal of the steelrod.



EN 166:2001 (E)147.2 Particular requirements7.2.1 Protection against optical radiation7.2.1.1Welding filters – see EN 169.7.2.1.2Ultraviolet filters – see EN 170.7.2.1.3Infrared filters – see EN 171.7.2.1.4Sunglare filters for industrial use – see EN 172.7.2.1.5Welding Filters with switchable luminous transmittance - see EN 379.7.2.2 Protection against high-speed particlesEye-protectors intended to provide protection against high-speed particles shall withstand the impact of a 6 mmnominal diameter steel ball of 0,86 g minimum mass, striking the oculars and the lateral protection at one of thespeeds given in Table 7.Eye-protectors for protection against high-speed particles shall also meet the requirements for increasedrobustness given in 7.1.4.2.Table 7 — Requirements relating to protection against high-speed particlesImpact speed of ballLow energy impact (F)Medium energy impact (B)High energy impact(A)Type of eye-protector5,1045m/ss/m12030s/m19050Spectacles+Not applicableNot applicableGoggles++Not applicableFace-shields+++The test shall be in accordance with the method specified in clause 9 of EN 168:2001.It shall not be possible for the ball to strike the lateral impact point without first striking the lateral protection.On so testing the following defects shall not occur:a) ocular fracture : an ocular shall be considered to have fractured if it cracks through its entire thickness into twoor more pieces, or if more than 5 mg of the ocular material becomes detached from the surface away from theone struck by the ball, or if the ball passes through the ocular;b) ocular deformation : an ocular shall be considered to have been deformed if a mark appears on the whitepaper on the opposite side to that struck by the ball;c) ocular housing or frame failure : an ocular housing or frame shall be considered to have failed if it separatesinto two or more pieces, or if it is no longer capable of holding an ocular in position, or if an unbroken oculardetaches from the frame, or if the ball passes through the housing or frame;d) lateral protection failure : the lateral protection shall be considered to have failed if it fractures through its entirethickness into two or more separate pieces, or if one or more particles becomes detached from the surfaceremote from the impact point, or if it allows the ball to penetrate completely, or if it partially or totally detachesfrom the eye-protector, or if its component parts become separated.NOTEEye-protectors offering protection again
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