EN 167:2001
(Main)Personal eye-protection - Optical test methods
Personal eye-protection - Optical test methods
This European standard specifies optical test methods for eye-protectors, the requirements for which are contained in other EN's. Alternative methods may be used if shown to be equivalent. Non-optical test methods are given in EN 168. A definition of terms is given in EN 165.
Persönlicher Augenschutz - Optische Prüfverfahren
Diese Europäische Norm legt optische Prüfverfahren für Augenschutzgeräte fest, für die die Anforderungen in anderen Europäischen Normen enthalten sind.
Alternative Prüfverfahren dürfen verwendet werden, falls deren Gleichwertigkeit nachgewiesen wurde.
EN 168 enthält die nichtoptischen Prüfverfahren.
Anforderungen sind in EN 166 enthalten.
Die Begriffe sind in EN 165 definiert.
Protection individuelle de l'oeil - Méthodes d'essais optiques
La présente Norme européenne spécifie les méthodes d'essais optiques pour les protecteurs oculaires dont les spécifications sont données dans d'autres EN.
Il est possible d'utiliser d'autres méthodes s'il est démontré qu'elles sont équivalentes.
Les méthodes d'essais autres qu'optiques font l'objet de l'EN 168.
Les spécifications sont données dans l'EN 166.
Une définition des termes employés est donnée dans l'EN 165.
Osebno varovanje oči - Metode optičnih preskusov
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Personal eye-protection - Optical test methodsProtection individuelle de l'oeil - Méthodes d'essais optiquesPersönlicher Augenschutz - Optische Prüfverfahren13.340.20Varovalna oprema za glavoHead protective equipmentICS:SIST EN 167:2002enTa slovenski standard je istoveten z:EN 167:200101-junij-2002SIST EN 167:2002SLOVENSKI
STANDARDSIST EN 167:19961DGRPHãþD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 167November 2001ICS 13.340.20Supersedes EN 167:1995English versionPersonal eye-protection - Optical test methodsProtection individuelle de l'oeil - Méthodes d'essaisoptiquesPersönlicher Augenschutz - Optische PrüfverfahrenThis European Standard was approved by CEN on 3 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 167:2001 E
Method for measuring spherical and astigmatic refractive powers over smallareas.19A.1Principle.19A.2Apparatus.19A.3Measurements.20Annex B (informative)
Uncertainty of measurement and results interpretation.25B.1Test report and uncertainty of measurement.25Annex ZA (informative)
Clauses of this European Standard addressing essential requirements or otherprovisions of EU Directives.27
in the as-worn position so that the axis of the eye-protector is parallel to the optical axis of the test assembly. Adjustable tilteye-protectors are positioned with their oculars normal to the optical axis of the test equipment.Measure the vertical and horizontal distances between the two displaced images arising from the two ocularregions of the eye-protector.These distances in centimetres are divided by two to give the horizontal and vertical prismatic differencesin centimetres per metre.If the light paths which correspond to the two eye regions cross, the prismatic refractive power is `base in' and if thelight paths do not cross, it is `base out'.
70) nm, etc.JInterference filter with peak transmittance in the green part of the spectrum (required only if a filament lamp is used as the light source)L1Achromatic lens, focal length between 20 mm and 50 mmLB1Diaphragm, diameter of aperture 1 mm nominalPEye-protectorLB2Diaphragm as shown in detail AL2Achromatic lens, 1 000 mm nominal focal length and 75 mm nominal diameterBImage planeaAs close as possible.bX = (32,0
0,2) mm or (27,0
0,2) mm depending on the size of the head-form specified in EN 168.Figure 2 — Arrangement of apparatus for measurement of prismatic difference
and .Key1Incident light on optical axis2Diffused light3OcularFigure 3 — Diffusion angles4.2 Test methodsTwo test methods are specified which use the same measurement principle. The `basic method' detailed in 4.2.1may be used for oculars without corrective effect and for all shade numbers. The
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