IEC 61966-6:2005

INTERNATIONAL IEC
STANDARD 61966-6
First edition
2005-03
Multimedia systems and equipment –
Colour measurement and management –
Part 6:
Front projection displays
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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.
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– 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
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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
...