Eye and face protection - Test methods - Part 1: Geometrical optical properties (ISO 18526-1:2020)

This document specifies the reference test methods for determining the spherical, cylindrical, and prismatic refractive power properties of unmounted and mounted plano lenses (non-corrective lenses) for eye and face protectors.
This document does not apply to any eye and face protection product requirement standards for which other test methods are specified.
Other test methods can be used provided they have been shown to be equivalent and include uncertainties of measurement no greater than those required by the reference method.

Augen- und Gesichtsschutz - Prüfverfahren - Teil 1: Geometrisch optische Eigenschaften (ISO 18526-1:2020)

Dieses Dokument legt die Referenzprüfverfahren zur Bestimmung der sphärischen, zylindrischen und prismatischen Brechkrafteigenschaften von nicht eingearbeiteten und eingearbeiteten Plan-Sichtscheiben (Sichtscheiben ohne Korrektionswirkung) für Augen- und Gesichtsschutzgeräte fest.
Dieses Dokument gilt nicht für etwaige Anforderungsnormen für Augen- und Gesichtsschutzprodukte, für die andere Prüfverfahren festgelegt sind.
Andere Prüfverfahren können angewendet werden, sofern ihre Gleichwertigkeit nachgewiesen ist und ihre Präzision die vom Referenzverfahren geforderte nicht übersteigt.

Protection des yeux et du visage - Méthodes d'essai - Partie 1: Propriétés optiques géométriques (ISO 18526-1:2020)

Le présent document spécifie les méthodes d'essai de référence pour la détermination des propriétés de puissance optique sphérique, cylindrique et prismatique des verres plans montés et non montés (verres non correcteurs) pour la protection de l'œil et du visage.
Le présent document ne s'applique à aucune norme d'exigences produit relatives à la protection des yeux et du visage pour laquelle d'autres méthodes d'essai sont spécifiées.
D'autres méthodes d'essai peuvent être utilisées à condition que leur équivalence ait été démontrée et si les incertitudes de mesure qui leur sont associées n'excèdent pas celles exigées par la méthode de référence.

Varovanje oči in obraza - Preskusne metode - 1. del: Geometrijske optične lastnosti (ISO 18526-1:2020)

General Information

Status
Published
Publication Date
17-Mar-2020
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
18-Mar-2020
Completion Date
18-Mar-2020

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SLOVENSKI STANDARD
SIST EN ISO 18526-1:2020
01-maj-2020
Varovanje oči in obraza - Preskusne metode - 1. del: Geometrijske optične
lastnosti (ISO 18526-1:2020)

Eye and face protection - Test methods - Part 1: Geometrical optical properties (ISO

18526-1:2020)

Augen- und Gesichtsschutz - Prüfverfahren - Teil 1: Geometrisch optische Eigenschaften

(ISO 18526-1:2020)

Protection des yeux et du visage - Méthodes d'essai - Partie 1: Propriétés optiques

géométriques (ISO 18526-1:2020)
Ta slovenski standard je istoveten z: EN ISO 18526-1:2020
ICS:
13.340.20 Varovalna oprema za glavo Head protective equipment
SIST EN ISO 18526-1:2020 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 18526-1:2020
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SIST EN ISO 18526-1:2020
EN ISO 18526-1
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2020
EUROPÄISCHE NORM
ICS 13.340.20
English Version
Eye and face protection - Test methods - Part 1:
Geometrical optical properties (ISO 18526-1:2020)

Protection des yeux et du visage - Méthodes d'essai - Augen- und Gesichtsschutz - Prüfverfahren - Teil 1:

Partie 1: Propriétés optiques géométriques (ISO Geometrisch optische Eigenschaften (ISO 18526-

18526-1:2020) 1:2020)
This European Standard was approved by CEN on 24 January 2020.

CEN members are bound to comply with the 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-CENELEC 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

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official 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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 18526-1:2020 E

worldwide for CEN national Members.
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SIST EN ISO 18526-1:2020
EN ISO 18526-1:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 18526-1:2020
EN ISO 18526-1:2020 (E)
European foreword

This document (EN ISO 18526-1:2020) has been prepared by Technical Committee ISO/TC 94

"Personal safety -- Personal protective equipment" in collaboration with Technical Committee 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 September 2020, and conflicting national standards

shall be withdrawn at the latest by September 2020.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association.

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, France, Germany, Greece, Hungary, Iceland,

Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of

North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the

United Kingdom.
Endorsement notice

The text of ISO 18526-1:2020 has been approved by CEN as EN ISO 18526-1:2020 without any

modification.
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SIST EN ISO 18526-1:2020
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SIST EN ISO 18526-1:2020
INTERNATIONAL ISO
STANDARD 18526-1
First edition
2020-03
Eye and face protection — Test
methods —
Part 1:
Geometrical optical properties
Protection des yeux et du visage — Méthodes d'essai —
Partie 1: Propriétés optiques géométriques
Reference number
ISO 18526-1:2020(E)
ISO 2020
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SIST EN ISO 18526-1:2020
ISO 18526-1:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
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SIST EN ISO 18526-1:2020
ISO 18526-1:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Preparatory information ............................................................................................................................................................................. 1

5 General test requirements ......................................................................................................................................................................... 2

6 Geometrical optical test methods ....................................................................................................................................................... 2

6.1 Test method for refractive power and prismatic power for plano lenses ............................................ 2

6.1.1 Principle .................................................................................................................................................................................. 2

6.1.2 Apparatus ............................................................................................................................................................................... 2

6.1.3 Calibration of the apparatus .................................................................................................................................. 3

6.1.4 Procedure ............................................................................................................................................................................... 3

6.2 Test method for the prism imbalance of complete eye protectors or lenses

covering both eyes ............................................................................................................................................................................... 5

6.2.1 Principle .................................................................................................................................................................................. 5

6.2.2 Apparatus ............................................................................................................................................................................... 5

6.2.3 Procedure ............................................................................................................................................................................... 6

6.2.4 Test report ............................................................................................................................................................................. 7

6.3 Spatial deviations.................................................................................................................................................................................. 7

6.3.1 Principle .................................................................................................................................................................................. 7

6.3.2 Apparatus ............................................................................................................................................................................... 7

6.3.3 Procedure ............................................................................................................................................................................... 8

6.3.4 Test report ............................................................................................................................................................................. 9

7 Uncertainty of measurement ................................................................................................................................................................... 9

Annex A (normative) Application of uncertainty of measurement ...................................................................................10

Annex B (informative) Method of variable distance for the calibration of telescope (see 6.1.3) .......13

Bibliography .............................................................................................................................................................................................................................15

© ISO 2020 – All rights reserved iii
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SIST EN ISO 18526-1:2020
ISO 18526-1:2020(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/

iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 94, Personal safety — Personal protective

equipment, Subcommittee SC 6, Eye and face protection.

This first edition of ISO 18526-1, together with ISO 18526-2, cancels and replaces ISO 4854:1981 which

has been technically revised.
A list of all parts in the ISO 18526 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2020 – All rights reserved
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SIST EN ISO 18526-1:2020
ISO 18526-1:2020(E)
Introduction

The family of documents comprised of the ISO 16321 series, the ISO 18526 series and the ISO 18527

series was developed in response to the worldwide stakeholders' demand for minimum requirements

and test methods for eye and face protectors traded internationally. ISO 4007 gives the terms and

definitions for all the various product types. The test methods are given in the ISO 18526 series, while

the requirements for occupational eye and face protectors are given in the ISO 16321 series. Eye

protectors for specific sports are mostly dealt with by the ISO 18527 series. A guidance document,

ISO 19734, for the selection, use and maintenance of eye and face protectors is under preparation.

© ISO 2020 – All rights reserved v
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SIST EN ISO 18526-1:2020
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SIST EN ISO 18526-1:2020
INTERNATIONAL STANDARD ISO 18526-1:2020(E)
Eye and face protection — Test methods —
Part 1:
Geometrical optical properties
1 Scope

This document specifies the reference test methods for determining the spherical, cylindrical, and

prismatic refractive power properties of unmounted and mounted plano lenses (non-corrective lenses)

for eye and face protectors.

This document does not apply to any eye and face protection product requirement standards for which

other test methods are specified.

Other test methods can be used provided they have been shown to be equivalent and include

uncertainties of measurement no greater than those required by the reference method.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO/IEC Guide 98-3, Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in

me a s ur ement (GUM: 1995)
ISO 4007, Personal protective equipment — Eye and face protection — Vocabulary
ISO 18526-4:2020, Eye and face protection — Test methods — Part 4: Headforms
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 4007 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
4 Preparatory information

Before testing, refer to the appropriate product's requirements standard for the information needed to

apply the tests in this document, for example:
— the number of test samples ;
— preparation of test samples;
— the selection of test samples (if included in this document);

1) For the purpose of this document, “test sample” is taken to be the object under test, e.g. “lens”, “filter” or

“complete protector” as specified in the requirement standards.
© ISO 2020 – All rights reserved 1
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SIST EN ISO 18526-1:2020
ISO 18526-1:2020(E)
— any prior conditioning or testing;
— test method (if more than one are included in this document);
— any deviations from the method(s);
— characteristics to be assessed subjectively (if appropriate);
— pass/fail criteria.
5 General test requirements
Unless otherwise specified, the values st
...

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