EN ISO 18526-1:2020
(Main)Eye and face protection - Test methods - Part 1: Geometrical optical properties (ISO 18526-1:2020)
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
Relations
Overview
EN ISO 18526-1:2020 - Eye and face protection - Test methods - Part 1: Geometrical optical properties (ISO 18526-1:2020) defines reference test methods for measuring the geometrical optical properties of non‑corrective (plano) lenses used in eye and face protectors. It specifies how to determine spherical, cylindrical and prismatic refractive power of both unmounted and mounted plano lenses, and sets requirements for test conditions and uncertainty of measurement. Alternative test methods are permitted only if shown equivalent and with no greater measurement uncertainty than the reference method.
Key topics and technical requirements
- Scope: Applies to plano lenses for eye and face protection; does not replace product requirement standards that specify other test methods.
- Primary test method: The telescope method for measuring refractive and prismatic power of plano lenses (described in detail, including apparatus and procedure).
- Apparatus guidance: Example telescope setup (nominal aperture ~20 mm, magnification ×10 to ×30, adjustable eyepiece with reticule). Calibration of the telescope must achieve a measurement uncertainty of 0.01 D (dioptre) using the specified calibration procedure.
- Targets and optics: Details on illuminated target patterns and alignment for accurate measurements.
- Environmental and test conditions: Default ambient temperature range 16 °C to 32 °C and relative humidity (50 ± 20) % unless otherwise specified; tests to be performed at defined reference points on the lens.
- Uncertainty of measurement: Each measurement must include an evaluated uncertainty per Annex A and ISO/IEC Guide 98‑3 (GUM).
- Additional methods: Procedures for prism imbalance, spatial deviations and calibration methods are included; test reports and procedural requirements are specified.
Applications and who uses this standard
EN ISO 18526-1:2020 is intended for practical use by:
- PPE manufacturers designing and producing safety goggles, face shields and visors to verify optical quality of plano lenses.
- Testing laboratories and certification bodies performing standardized optical measurements for compliance and certification.
- Product designers and R&D teams assessing lens geometry, prismatic effects and optical uniformity.
- Regulators and procurement specialists specifying accepted test methods in tender or regulatory documents.
This standard supports consistent PPE testing, ensures optical safety and compatibility with occupational eye and face protection requirements, and aids international trade by aligning test methods.
Related standards
- ISO 18526 series (other parts, e.g., Part 2 / Part 4)
- ISO 16321 (requirements for occupational eye and face protectors)
- ISO 4007 (vocabulary for eye and face protection)
- ISO/IEC Guide 98‑3 (GUM: uncertainty of measurement)
Keywords: EN ISO 18526-1:2020, eye and face protection, geometrical optical properties, refractive power, prismatic power, plano lenses, test methods, PPE testing, optical safety standards.
Frequently Asked Questions
EN ISO 18526-1:2020 is a standard published by the European Committee for Standardization (CEN). Its full title is "Eye and face protection - Test methods - Part 1: Geometrical optical properties (ISO 18526-1:2020)". This standard covers: 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.
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.
EN ISO 18526-1:2020 is classified under the following ICS (International Classification for Standards) categories: 13.340.20 - Head protective equipment. The ICS classification helps identify the subject area and facilitates finding related standards.
EN ISO 18526-1:2020 has the following relationships with other standards: It is inter standard links to EN 167:2001, EN 168:2001. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN ISO 18526-1:2020 is associated with the following European legislation: EU Directives/Regulations: 2016/425. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
You can purchase EN ISO 18526-1:2020 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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.
Contents Page
European foreword . 3
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.
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
ISO 18526-1:2020(E)
© 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
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 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
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.
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:
1)
— 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 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
...
The EN ISO 18526-1:2020 standard provides a comprehensive framework for assessing the geometrical optical properties of eye and face protection through well-defined test methods. Its primary scope encompasses the determination of spherical, cylindrical, and prismatic refractive power properties specifically for unmounted and mounted plano lenses. This focus on non-corrective lenses is particularly relevant in industries where eye safety is paramount, ensuring that these protective devices maintain optical clarity and performance. One of the strengths of this standard is its specification of reference test methods, which enhances consistency and reliability in measurements. By establishing a clear methodology, EN ISO 18526-1:2020 allows manufacturers and safety professionals to compare results across different products and testing facilities effectively. The standard's flexibility, permitting the use of alternative test methods as long as they demonstrate equivalent accuracy and adhere to specified measurement uncertainties, further strengthens its applicability in varied settings. The relevance of EN ISO 18526-1:2020 cannot be overstated, especially in context with the increasing emphasis on safety regulations and standards in the workplace. As the demand for high-quality eye and face protection grows, the standard's guidelines help ensure that these products are thoroughly evaluated for their optical performance, thus contributing to the overall safety of end-users. This alignment with current safety trends makes the EN ISO 18526-1:2020 a vital reference for manufacturers, ensuring that their products meet both regulatory requirements and the expectations of consumers for quality and safety.
SIST EN ISO 18526-1:2020は、目と顔の保護具に関連する重要な規格であり、特にジオメトリカル光学特性のテスト方法に焦点を当てています。この標準は、未装着および装着されたプラノレンズ（非矯正レンズ）の球面、円筒、およびプリズマティック屈折力特性を測定するための基準試験方法を明確に規定しています。そのため、目と顔の保護具の設計と製造において、信頼性の高い評価を行うための基盤を提供します。 この標準の強みは、明確な手順と基準に基づいてテストを実施できる点にあります。これにより、製造業者や検査機関は、一貫性のあるテスト結果を得ることができ、製品の安全性と効果を確保することが可能となります。また、本規格では他のテスト方法が使用できる条件も明示しており、各種測定方法の選択の柔軟性を持たせている点も評価できます。これにより、不確実性が基準方法で要求される範囲内に収まる限り、適切な代替手段が認められるため、実用的なアプローチが取れます。 さらに、この規格は、目と顔の保護具の全体的な要求事項に関する他の基準とは明確に区別されているため、特定のテスト方法に特化した文書としての有用性が際立っています。この点は、製造業者が製品の品質と安全性を確保するために必要な情報を特定明示する助けとなります。 要するに、SIST EN ISO 18526-1:2020は、目と顔の保護具に関するジオメトリカル光学特性のテスト方法を規定した重要な標準であり、製品の安全性向上に寄与するものであるため、業界関係者にとって非常に関連性の高い文書と言えるでしょう。
EN ISO 18526-1:2020 표준은 눈과 얼굴 보호구에 대한 테스트 방법 중 첫 번째 파트로, 비프리즘 렌즈의 구면, 원주 및 프리즘 굴절력 특성을 측정하기 위한 기준 테스트 방법을 제시합니다. 이 문서는 눈과 얼굴 보호구에 사용되는 비정상 렌즈의 광학적 특성을 평가하는 데 필수적인 기준을 제공합니다. 이 표준의 강점 중 하나는 비부착 평면 렌즈에 대한 평가 방법을 명확하게 정의하고 있다는 점입니다. 이는 사용자에게 안전하고 신뢰할 수 있는 보호구를 제공하는 데 도움을 주며, 제조업체가 제품 품질을 보장하는 데 필요한 일관된 기준을 제공합니다. 또한, 이 표준은 다른 테스트 방법이 동등성을 입증하고 측정 불확실성이 기준 방법에서 요구하는 것보다 크지 않으면 사용할 수 있음을 명시하여, 경우에 따라 유연성을 허용합니다. EN ISO 18526-1:2020의 적용 범위는 눈과 얼굴 보호구 기기의 테스트 및 평가에 중점을 두고 있으며, 이는 사용자의 안전을 최우선으로 고려한 것입니다. 이 표준은 보호장비의 굴절력 특성을 명확히 분석함으로써 산업 전반에 걸쳐 중요한 역할을 하며, 관련 기업들이 기준을 준수하도록 유도합니다. 전반적으로 이 문서는 눈과 얼굴 보호구의 품질과 안전성을 높이는 데 기여하는 중요한 표준입니다.
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