Ergonomics - Accessible design - Indicator lights on consumer products (ISO 24550:2019)

This document specifies design requirements and recommendations for indicator lights, mainly LED sourced, on consumer products for use by older people and people with visual disabilities. It does not consider the needs of persons who are blind.
Indicator lights include those that inform users visually about the conditions, changes in functional status and settings, and malfunction of products. They convey information by light on/off, time-modulated intensity, blinking, colour, luminance level, and layout.
This document addresses household and home appliances. It excludes electronic displays presenting characters and graphics, machinery, and appliances in special use for professional, technical, and industrial applications.

Ergonomie - Zugängliche Gestaltung - Kontrollleuchten an Konsumgütern (ISO 24550:2019)

Dieses Dokument legt Anforderungen und Empfehlungen für die Gestaltung von Kontrollleuchten, zumeist mit LED-Lichtquelle, an Konsumgütern für den Gebrauch durch ältere Menschen und Menschen mit Sehbehinderungen fest. Es berücksichtigt nicht die Bedürfnisse von Menschen, die blind sind.
Kontrollleuchten umfassen Leuchten, die Benutzer optisch über die Zustände, Veränderungen des Funktionsstatus und der Einstellungen sowie Fehlfunktionen von Produkten informieren. Sie vermitteln Informationen durch ihr Aufleuchten oder Erlöschen, zeitliche Modulation ihrer Lichtstärke, Blinken, Farbe, unterschiedliche Leuchtdichten und durch ihre Anordnung.
Dieses Dokument bezieht sich auf Geräte für den Hausgebrauch. Es bezieht sich nicht auf elektronische Anzeigeeinrichtungen zur Darstellung von Zeichen und Graphiken, Maschinen, und Geräte, die speziell in beruflichen, technischen und industriellen Anwendungen verwendet werden.

Ergonomie - Conception accessible - Voyants lumineux sur les produits de consommation (ISO 24550:2019)

Le présent document spécifie des exigences et des recommandations de conception des voyants lumineux, principalement à base de LED, sur les produits de consommation courante destinés à être utilisés par des personnes âgées et des personnes malvoyantes. Il ne prend pas en compte les besoins des personnes non voyantes.
Les voyants lumineux englobent les voyants qui informent visuellement les utilisateurs sur les conditions, les changements d'état fonctionnel et les réglages, ainsi que sur le dysfonctionnement des produits. Ils fournissent des informations par leur état allumé/éteint, par la modulation de leur intensité dans le temps, leur clignotement, leur couleur, leur niveau de luminance et leur configuration.
Le présent document concerne les produits et appareils électroménagers. Il exclut les écrans électroniques affichant des caractères et des graphiques, les machines et les appareils pour usages spéciaux destinés à des applications professionnelles, techniques et industrielles.

Ergonomija - Dostopno načrtovanje - Indikatorji svetil za proizvode (ISO 24550:2019)

General Information

Status
Published
Publication Date
19-Nov-2019
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
20-Nov-2019
Completion Date
20-Nov-2019

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SLOVENSKI STANDARD
SIST EN ISO 24550:2020
01-maj-2020
Nadomešča:
SIST EN ISO 24500:2011
Ergonomija - Dostopno načrtovanje - Indikatorji svetil za proizvode (ISO
24550:2019)
Ergonomics - Accessible design - Indicator lights on consumer products (ISO
24550:2019)
Ergonomie - Zugängliche Gestaltung - Kontrollleuchten an Konsumgütern (ISO
24550:2019)
Ergonomie - Conception accessible - Voyants lumineux sur les produits de
consommation (ISO 24550:2019)
Ta slovenski standard je istoveten z: EN ISO 24550:2019
ICS:
11.180.15 Pripomočki za gluhe osebe in Aids for deaf and hearing
osebe z okvaro sluha impaired people
13.180 Ergonomija Ergonomics
SIST EN ISO 24550:2020 en,fr,de

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

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SIST EN ISO 24550:2020
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SIST EN ISO 24550:2020
EN ISO 24550
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2019
EUROPÄISCHE NORM
ICS 11.180.15; 13.180
English Version
Ergonomics - Accessible design - Indicator lights on
consumer products (ISO 24550:2019)

Ergonomie - Conception accessible - Voyants lumineux Ergonomie - Zugängliche Gestaltung - Kontrollleuchten

sur les produits de consommation (ISO 24550:2019) an Konsumgütern (ISO 24550:2019)

This European Standard was approved by CEN on 25 October 2019.

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

© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 24550:2019 E

worldwide for CEN national Members.
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SIST EN ISO 24550:2020
EN ISO 24550:2019 (E)
Contents Page

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

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SIST EN ISO 24550:2020
EN ISO 24550:2019 (E)
European foreword

This document (EN ISO 24550:2019) has been prepared by Technical Committee ISO/TC 159

"Ergonomics" in collaboration with Technical Committee CEN/TC 122 “Ergonomics” the secretariat of

which is held by DIN.

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 May 2020, and conflicting national standards shall be

withdrawn at the latest by May 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.

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 24550:2019 has been approved by CEN as EN ISO 24550:2019 without any modification.

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SIST EN ISO 24550:2020
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SIST EN ISO 24550:2020
INTERNATIONAL ISO
STANDARD 24550
First edition
2019-10
Ergonomics — Accessible design —
Indicator lights on consumer products
Ergonomie — Conception accessible — Voyants lumineux sur les
produits de consommation courante
Reference number
ISO 24550:2019(E)
ISO 2019
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SIST EN ISO 24550:2020
ISO 24550:2019(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2019

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 2019 – All rights reserved
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SIST EN ISO 24550:2020
ISO 24550:2019(E)
Contents Page

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

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

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

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

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

4 Accessibility considerations related to indicator lights .............................................................................................. 2

4.1 Modes of lighting condition ......................................................................................................................................................... 2

4.2 Colour .............................................................................................................................................................................................................. 3

4.3 Luminance .................................................................................................................................................................................................. 3

4.4 Size .................................................................................................................................................................................................................... 5

4.5 Temporal luminance difference and blinking light frequency ....................................................................... 5

4.6 Location ......................................................................................................................................................................................................... 6

4.7 Alternative presentation of indicator light information...................................................................................... 6

4.8 Marking of the indicator light meaning ............................................................................................................................. 7

4.9 Other factors ............................................................................................................................................................................................. 7

5 Conformance ............................................................................................................................................................................................................. 7

Bibliography ................................................................................................................................................................................................................................ 8

© ISO 2019 – All rights reserved iii
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SIST EN ISO 24550:2020
ISO 24550:2019(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 159, Ergonomics, Subcommittee SC 4,

Ergonomics of human-system interaction.
This first edition cancels and replaces ISO 24500:2010.

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 2019 – All rights reserved
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SIST EN ISO 24550:2020
ISO 24550:2019(E)
Introduction

Indicator lights of consumer products provide important information to use products properly.

Although their importance is recognized widely, many difficulties exist in relation to indicator lights

such as insufficient on/off visibility, unclear implications of lighting modes, and discomforting glare are

reported by users, particularly by older persons or persons with visual disabilities. These claims result

from the lack of a relevant standard related to indicator lights design. This document is intended to

provide design requirements and recommendations for adequate brightness, colour, and use of blinking

lights of indicator lights considering the needs of older persons and persons with visual disabilities.

This document adopts the concepts of accessibility given in ISO/IEC Guide 71 and in ISO/TR 22411.

© ISO 2019 – All rights reserved v
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SIST EN ISO 24550:2020
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SIST EN ISO 24550:2020
INTERNATIONAL STANDARD ISO 24550:2019(E)
Ergonomics — Accessible design — Indicator lights on
consumer products
1 Scope

This document specifies design requirements and recommendations for indicator lights, mainly LED

sourced, on consumer products for use by older people and people with visual disabilities. It does not

consider the needs of persons who are blind.

Indicator lights include those that inform users visually about the conditions, changes in functional

status and settings, and malfunction of products. They convey information by light on/off, time-

modulated intensity, blinking, colour, luminance level, and layout.

This document addresses household and home appliances. It excludes electronic displays presenting

characters and graphics, machinery, and appliances in special use for professional, technical, and

industrial applications.
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 71, Guide for addressing accessibility in standards

ISO 17049, Accessible design — Application of braille on signage, equipment and appliances

CIE S 017, ILV: International Lighting Vocabulary
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO/IEC Guide 71 and CIE S 017

and the following 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/
3.1
consumer product

product that is intended to be acquired and used by an individual for personal rather than

professional use
[SOURCE: ISO/TS 20282-2:2013, 4.3]
3.2
indicator light

light which is associated with the operation of a product and is indicative of th

...

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