IEC 61966-6:2005

Multimedia systems and equipment - Colour measurement and management - Part 6: Front projection displays

IEC 61966-6:2005 defines input test signals, measurement conditions, methods of measurement and reporting of the measured data, to be used for colour characterization and colour management of front projection displays in multimedia systems. This bilingual version (2013-03) corresponds to the monolingual English version, published in 2005-03.

Systèmes et appareils multimédia - Mesure et gestion de la couleur - Partie 6: Écrans de projection frontale

La CEI 61966-6:2005 définit les signaux d'essai d'entrée, les conditions de mesure, les méthodes de mesure et le rapport des données mesurées, destinés à être utilisés pour la caractérisation des couleurs et la gestion des couleurs des écrans de projection frontale dans les systèmes multimédia. La présente version bilingue (2013-03) correspond à la version anglaise monolingue publiée en 2005-03.

General Information

• Status: Published
• Publication Date: 16-Mar-2005
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 17.180.20 - Colours and measurement of light
• ICS: 33.160.60 - Multimedia systems and teleconferencing equipment
• Technical Committee: TC 100 - Audio, video and multimedia systems and equipment
• Current Stage: PPUB - Publication issued
• Start Date: 30-Apr-2005
• Completion Date: 17-Mar-2005

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD 61966-6
First edition
2005-03
Multimedia systems and equipment –
Colour measurement and management –
Part 6:
Front projection displays
Reference number
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.
Consolidated editions
The IEC is now publishing consolidated versions of its publications. For example,
edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the
base publication incorporating amendment 1 and the base publication incorporating
amendments 1 and 2.
Further information on IEC publications
The technical content of IEC publications is kept under constant review by the IEC,
thus ensuring that the content reflects current technology. Information relating to
this publication, including its validity, is available in the IEC Catalogue of
publications (see below) in addition to new editions, amendments and corrigenda.
Information on the subjects under consideration and work in progress undertaken
by the technical committee which has prepared this publication, as well as the list
of publications issued, is also available from the following:
• IEC Web Site (www.iec.ch)
• Catalogue of IEC publications
The on-line catalogue on the IEC web site (www.iec.ch/searchpub) enables you to
search by a variety of criteria including text searches, technical committees
and date of publication. On-line information is also available on recently issued
publications, withdrawn and replaced publications, as well as corrigenda.
• IEC Just Published
This summary of recently issued publications (www.iec.ch/online_news/ justpub)
is also available by email. Please contact the Customer Service Centre (see
below) for further information.
• Customer Service Centre
If you have any questions regarding this publication or need further assistance,
please contact the Customer Service Centre:

Email: [e-mail]
Tel: [phone]
Fax: [phone]
INTERNATIONAL IEC
STANDARD 61966-6
First edition
2005-03
Multimedia systems and equipment –
Colour measurement and management –
Part 6:
Front projection displays
 IEC 2005  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
U
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – 61966-6  IEC(E)
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope .7
2 Normative references .7
3 Terms and definitions .7
4 Letters and symbols .8
5 Conditions.9
5.1 Environmental conditions .9
5.2 Conditions for measurements.9
5.3 Input digital data.11
6 Measurement equipment.11
6.1 Spectroradiometer .11
6.2 Colorimeter .12
7 Spectral characteristics and intensity of the primaries and white .12
7.1 Characteristics to be measured.12
7.2 Measurement conditions .12
7.3 Method of measurement .13
7.4 Presentation of results.13
8 Basic colorimetric characteristics .14
8.1 Characteristics to be measured.14
8.2 Method of measurement .14
8.3 Presentation of results.15
9 Tone characteristics .15
9.1 Characteristics to be measured.15
9.2 Measurement conditions .15
9.3 Method of measurement .16
9.4 Presentation of results.16
10 Other characteristics.19
10.1 Inter-channel dependency.19
10.1.1 Characteristics to be measured .19
10.1.2 Measurement conditions .20
10.1.3 Method of measurement.20
10.1.4 Presentation of results .22
10.2 Spatial non-uniformity.23
10.2.1 Characteristics to be measured .23
10.2.2 Measurement conditions .23
10.2.3 Method of measurement.23
10.2.4 Presentation of results .27

Bibliography .30

Figure 1 – Equipment arrangement for measurements (side view).10
Figure 2 – Size of colour patch.10

61966-6  IEC(E) – 3 –
Figure 3 – Example of the spectral radiance distributions r(λ), g(λ),b(λ) .13
Figure 4 – Measured points and interpolated curves .17

Figure 5 – Measurement points for spatial non-uniformity (25 points) .23
Figure 6 – Measurement points for spatial non-uniformity (9points) .25
Figure 7 – Measurement points for spatial non-uniformity (13 points) .26

Table 1 – Input data for peak primaries and peak white .13
Table 2 – Example of reporting form for colours in maximum excitations .14
Table 3 – Example of reporting form.15
Table 4 – Example set of basic normalized data for tone characteristics.18
Table 5 – Digital driving levels to generate colour patches for measurement of
interchannel dependency .20
Table 6 – Example of normalized tristimulus values (matrix A) .22
Table 7 – Example of reporting form.28
Table 8 – Example of reporting form.28
Table 9 – Example of reporting form.29

– 4 – 61966-6  IEC(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MULTIMEDIA SYSTEMS AND EQUIPMENT –
COLOUR MEASUREMENT AND MANAGEMENT –

Part 6: Front projection displays

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61966-6 has been prepared by technical area 2: Colour
measurement and management, of IEC technical committee 100: Audio, video and multimedia
systems and equipment.
The text of this standard is based on the following documents:
CDV Report on voting
100/835/CDV 100/915/RVC
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.

61966-6  IEC(E) – 5 –
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
IEC 61966 consists of the following parts, under the general title Multimedia systems and
equipment – Colour measurement and management:
Part 1: General
Part 2-1: Colour management – Default RGB colour space – sRGB
Part 2-2: Colour management – Extended RGB colour space – scRGB
Part 3: Equipment using cathode ray tubes
Part 4: Equipment using liquid crystal display panels
Part 5: Equipment using plasma display panels
Part 6: Front projection displays
Part 7-1: Colour printers – Reflective prints – RGB inputs
Part 7-2: Colour printers - Reflective prints - CMYK inputs (under consideration)
Part 8: Multimedia colour scanners
Part 9: Digital cameras
Part 10: Quality assessment - Colour image in network systems (under consideration)
Part 11: Quality assessment - Impaired video in network systems (under consideration)
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at
...

IEC 61966-6 ®
Edition 1.0 2005-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Multimedia systems and equipment – Colour measurement and management –
Part 6: Front projection displays

Systèmes et appareils multimédia – Mesure et gestion de la couleur –
Partie 6: Ecrans de projection frontale

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni
utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et les
microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.
Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette
publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé Fax: [phone]
CH-1211 Geneva 20 [e-mail]
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

Useful links:
IEC publications search - www.iec.ch/searchpub Electropedia - www.electropedia.org
The advanced search enables you to find IEC publications The world's leading online dictionary of electronic and
by a variety of criteria (reference number, text, technical electrical terms containing more than 30 000 terms and
committee,…). definitions in English and French, with equivalent terms in
It also gives information on projects, replaced and additional languages. Also known as the International
withdrawn publications. Electrotechnical Vocabulary (IEV) on-line.

IEC Just Published - webstore.iec.ch/justpublished Customer Service Centre - webstore.iec.ch/csc
Stay up to date on all new IEC publications. Just Published If you wish to give us your feedback on this publication
details all new publications released. Available on-line and or need further assistance, please contact the
also once a month by email. Customer Service Centre: [e-mail].

A propos de la CEI
La Commission Electrotechnique Internationale (CEI) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.

Liens utiles:
Recherche de publications CEI - www.iec.ch/searchpub Electropedia - www.electropedia.org
La recherche avancée vous permet de trouver des Le premier dictionnaire en ligne au monde de termes
publications CEI en utilisant différents critères (numéro de électroniques et électriques. Il contient plus de 30 000
référence, texte, comité d’études,…). termes et définitions en anglais et en français, ainsi que
Elle donne aussi des informations sur les projets et les les termes équivalents dans les langues additionnelles.
publications remplacées ou retirées. Egalement appelé Vocabulaire Electrotechnique
International (VEI) en ligne.
Just Published CEI - webstore.iec.ch/justpublished
Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications de la CEI.
Just Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur
Disponible en ligne et aussi une fois par mois par email. cette publication ou si vous avez des questions
contactez-nous: [e-mail].
IEC 61966-6 ®
Edition 1.0 2005-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Multimedia systems and equipment – Colour measurement and management –

Part 6: Front projection displays

Systèmes et appareils multimédia – Mesure et gestion de la couleur –

Partie 6: Ecrans de projection frontale

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX U
ICS 17.180.20; 33.160.60 ISBN 978-2-83220-609-6

– 2 – 61966-6  IEC:2005
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Letters and symbols . 8
5 Conditions . 9
5.1 Environmental conditions . 9
5.2 Conditions for measurements . 9
5.3 Input digital data . 11
6 Measurement equipment . 11
6.1 Spectroradiometer . 11
6.2 Colorimeter . 12
7 Spectral characteristics and intensity of the primaries and white . 12
7.1 Characteristics to be measured . 12
7.2 Measurement conditions . 12
7.3 Method of measurement . 13
7.4 Presentation of results . 13
8 Basic colorimetric characteristics . 14
8.1 Characteristics to be measured . 14
8.2 Method of measurement . 14
8.3 Presentation of results . 15
9 Tone characteristics . 15
9.1 Characteristics to be measured . 15
9.2 Measurement conditions . 15
9.3 Method of measurement . 15
9.4 Presentation of results . 16
10 Other characteristics . 19
10.1 Inter-channel dependency . 19
10.1.1 Characteristics to be measured . 19
10.1.2 Measurement conditions . 19
10.1.3 Method of measurement . 19
10.1.4 Presentation of results . 22
10.2 Spatial non-uniformity. 23
10.2.1 Characteristics to be measured . 23
10.2.2 Measurement conditions . 23
10.2.3 Method of measurement . 23
10.2.4 Presentation of results . 27

Bibliography . 30

Figure 1 – Equipment arrangement for measurements (side view) . 10
Figure 2 – Size of colour patch . 10
Figure 3 – Example of the spectral radiance distributions r(λ), g(λ),b(λ) . 13

61966-6  IEC:2005 – 3 –
Figure 4 – Measured points and interpolated curves . 16
Figure 5 – Measurement points for spatial non-uniformity (25 points) . 23
Figure 6 – Measurement points for spatial non-uniformity (9points) . 25
Figure 7 – Measurement points for spatial non-uniformity (13 points) . 26

Table 1 – Input data for peak primaries and peak white . 13
Table 2 – Example of reporting form for colours in maximum excitations . 14
Table 3 – Example of reporting form . 15
Table 4 – Example set of basic normalized data for tone characteristics . 18
Table 5 – Digital driving levels to generate colour patches for measurement of
interchannel dependency . 20
Table 6 – Example of normalized tristimulus values (matrix A) . 22
Table 7 – Example of reporting form . 28
Table 8 – Example of reporting form . 28
Table 9 – Example of reporting form . 29

– 4 – 61966-6  IEC:2005
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MULTIMEDIA SYSTEMS AND EQUIPMENT –
COLOUR MEASUREMENT AND MANAGEMENT –

Part 6: Front projection displays

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in
...