EN 61947-1:2002
(Main)Electronic projection - Measurement and documentation of key performance criteria - Part 1: Fixed resolution projectors
Electronic projection - Measurement and documentation of key performance criteria - Part 1: Fixed resolution projectors
Specifies requirements for measuring and documenting key performance parameters for electronic projection systems with fixed resolution projectors in which the light source and projection/magnification optics are an integral part of the system (i.e. individual pixel light sources or matrix displays such as liquid crystal, DMD, plasma, or electro-luminescent panels). Also applies to LCD panels or other fixed resolution imaging devices themselves that are used with overhead projectors.
Elektronische Projektion - Messung und Dokumentation wichtiger Leistungsmerkmale - Teil 1: Projektoren fester Auflösung
Projection électronique - Mesure et documentation des critères principaux de performance - Partie 1: Projecteurs à résolution fixe
Specifies requirements for measuring and documenting key performance parameters for electronic projection systems with fixed resolution projectors in which the light source and projection/magnification optics are an integral part of the system (i.e. individual pixel light sources or matrix displays such as liquid crystal, DMD, plasma, or electro-luminescent panels). Also applies to LCD panels or other fixed resolution imaging devices themselves that are used with overhead projectors.
Electronic projection - Measurement and documentation of key performance criteria - Part 1: Fixed resolution projectors (IEC 61947-1:2002)
General Information
Standards Content (Sample)
SLOVENSKI SIST EN 61947-1:2003
STANDARD
oktober 2003
Electronic projection - Measurement and documentation of key performance
criteria - Part 1: Fixed resolution projectors (IEC 61947-1:2002)
ICS 33.160.99; 37.040.10 Referenčna številka
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
EUROPEAN STANDARD EN 61947-1
NORME EUROPÉENNE
EUROPÄISCHE NORM November 2002
ICS 37.020; 35.180; 33.160.60
English version
Electronic projection -
Measurement and documentation of key performance criteria
Part 1: Fixed resolution projectors
(IEC 61947-1:2002)
Projection électronique - Elektronische Projektion -
Mesure et documentation des critères Messung und Dokumentation wichtiger
principaux de performance Leistungsmerkmale
Partie 1: Projecteurs à résolution fixe Teil 1: Projektoren fester Auflösung
(CEI 61947-1:2002) (IEC 61947-1:2002)
This European Standard was approved by CENELEC on 2002-10-01. CENELEC 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 Central Secretariat or to any CENELEC 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 CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61947-1:2002 E
Foreword
The text of document 100/501/FDIS, future edition 1 of IEC 61947-1, prepared by IEC TC 100, Audio,
video and multimedia systems and equipment, was submitted to the IEC-CENELEC parallel vote and
was approved by CENELEC as EN 61947-1 on 2002-10-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2003-07-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2005-10-01
Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annexes A, B, D and ZA are normative and annexes C, E, F, G, H and I are
informative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61947-1:2002 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 61947-1:2002
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
1) 2)
IEC 61947-2 - Electronic projection - Measurement EN 61947-2 2002
and documentation of key performance
criteria
Part 2: Variable resolution projectors
1) 2)
IEC 61966-4 - Multimedia systems and equipment - EN 61966-4 2000
Colour measurement and management
Part 4: Equipment using liquid crystal
display panels
1) 2)
IEC 61966-5 - Part 5: Equipment using plasma display EN 61966-5 2001
panels
1) 2)
ISO 3741 - Acoustics - Determination of sound EN ISO 3741 1999
power levels of noise sources using
sound pressure - Precision methods for
reverberation rooms
1) 2)
ISO 7779 - Acoustics EN ISO 7779 2001
Measurement of airborne noise emitted
by information technology and
telecommunications equipment
1)
Undated reference.
2)
Valid edition at date of issue.
INTERNATIONAL IEC
STANDARD
61947-1
First edition
2002-08
Electronic projection –
Measurement and documentation
of key performance criteria –
Part 1:
Fixed resolution projectors
IEC 2002 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: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
V
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue
– 2 – 61947-1 IEC:2002(E)
CONTENTS
FOREWORD . 3
INTRODUCTION .4
1 Scope . 5
2 Normative references. 5
3 Definitions. 6
4 General requirements.10
5 Light output measurement and specification .11
5.1 Light output specifications.12
5.2 Light output uniformity.13
5.3 Contrast ratio.13
5.4 Light transmission for fixed resolution projection systems: liquid-crystal
imaging devices (LCD) used with an overhead projector (OHP) .13
5.5 Small area contrast ratio for alternating black and white pixel lines .14
6 Fixed resolution projectors characteristics .15
6.1 Displayable format (IEC resolution) .15
6.2 Aspect ratio .15
6.3 Viewing angle (half/gain) specification for devices with an integral screen.15
6.4 Input signal format compatibility .16
6.5 Response time.16
6.6 Colour measurements .16
6.7 Number of colours .17
6.8 Keystone correction .17
7 Range of focus and image size.17
8 Audio characteristics.18
9 Light source specification.18
10 Maximum acoustical noise level .18
11 Power consumption.18
12 Weight .18
13 Dimensions.19
14 Sync hierarchy – Recommended practice .19
Annex A (normative) Figures .20
Annex B (normative) Pattern generator specifications .23
Annex C (informative) Considerations in formulating this standard .24
Annex D (normative) Complete sample specification.26
Annex E (informative) Conversion equations.27
Annex F (informative) Possible causes of photometric measurement errors .28
Annex G (informative) Photometer precision and veiling glare .29
Annex H (informative) Light measuring devices.31
Annex I (Informative) Figure of merit for projection display colour gamut .32
Bibliography .34
61947-1 IEC:2002(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRONIC PROJECTION –
MEASUREMENT AND DOCUMENTATION OF
KEY PERFORMANCE CRITERIA
Part 1: Fixed resolution projectors
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61947-1 was prepared by IEC technical committee 100: Audio,
video and multimedia systems and equipment.
The text of this standard is based on the following documents:
FDIS Report on voting
100/501/FDIS 100/537/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
2004. At that date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
– 4 – 61947-1 IEC:2002(E)
INTRODUCTION
This standard was developed to ensure a common, meaningful description of key performance
parameters for fixed resolution projectors. The measurement methods and test signals
correlate closely to typical uses involving computer-generated text and graphics displays.
These measurements evaluate the actual viewable image that emanates from fixed resolution
projectors. The resulting performance specifications are conservative in nature and allow any
display device to be used beyond its rated specifications with degraded performance. The point
at which this degraded performance is no longer useful is highly subjective and strongly
affected by the environment and the application.
This standard is designed to specify a means of measuring and quantifying the performance
...
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