SIST EN 61341:2011

SLOVENSKI STANDARD
SIST EN 61341:2011
01-oktober-2011
Merilne metode za intenzivnost osrednjega snopa in kot(i) snopa reflektorskih
sijalk (IEC/TR 61341:2010)
Method of measurement of centre beam intensity and beam angle(s) of reflector lamps
(IEC/TR 61341:2010)
Verfahren zur Messung der Axial-Lichtstärke und des (der) Ausstrahlungswinkel(s) von
Reflektorlampen (IEC/TR 61341:2010)
Méthode de mesure de l'intensité dans l'axe du faisceau et de l'angle (ou des angles)
d'ouverture des lampes à réflecteur (CEI/TR 61341:2010)
Ta slovenski standard je istoveten z: EN 61341:2011
ICS:
17.180.20 Barve in merjenje svetlobe Colours and measurement of
light
29.140.01 Žarnice na splošno Lamps in general
SIST EN 61341:2011 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61341:2011

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SIST EN 61341:2011

EUROPEAN STANDARD
EN 61341

NORME EUROPÉENNE
July 2011
EUROPÄISCHE NORM

ICS 29.140.20


English version


Method of measurement of centre beam intensity and beam angle(s) of
reflector lamps
(IEC/TR 61341:2010)


Méthode de mesure de l'intensité dans Verfahren zur Messung der Lichtstärke in
l'axe du faisceau et de l'angle (ou des Hauptausstrahlungsrichtung und des (der)
angles) d'ouverture des lampes à Ausstrahlwinkel(s) von Reflektorlampen
réflecteur (IEC/TR 61341:2010)
(CEI/TR 61341:2010)





This European Standard was approved by CENELEC on 2011-07-04. 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, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels


© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61341:2011 E

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SIST EN 61341:2011
EN 61341:2011 - 2 -
Foreword
The text of the International Standard IEC/TR 61341:2010, prepared by SC 34A, Lamps, of IEC TC 34,
Lamps and related equipment, was submitted to the Unique Acceptance Procedure and was approved by
CENELEC as EN 61341 on 2011-07-04 without any modification.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
(dop) 2012-07-04
national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2014-07-04
with the EN have to be withdrawn
__________
Endorsement notice
The text of the International Standard IEC/TR 61341:2010 was approved by CENELEC as a European
Standard without any modification.
__________

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SIST EN 61341:2011
IEC/TR 61341
®
Edition 2.0 2010-02
TECHNICAL
REPORT
RAPPORT
TECHNIQUE
Method of measurement of centre beam intensity and beam angle(s) of reflector
lamps

Méthode de mesure de l’intensité dans l’axe du faisceau et de l'angle (ou des
angles) d’ouverture des lampes à réflecteur

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
K
CODE PRIX
ICS 29.140.20 ISBN 978-2-88910-508-3
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 61341:2011
– 2 – TR 61341 © IEC:2010
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope.6
2 Terms and definitions .6
3 Basic beam patterns.7
4 General conditions for measurement .7
5 Test arrangement .7
6 Measuring procedure.8
7 Specification of centre beam intensity and beam angle(s).9
Bibliography.10

Figure 1 – Relation between optical beam axis, geometrical-mechanical axis, peak
intensity and centre beam intensity.6
Figure 2 – Measurement of luminous intensity distribution .9
Figure 3 – Case where the centre beam intensity is smaller than 50 % of the peak
intensity.9

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SIST EN 61341:2011
TR 61341 © IEC:2010 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

METHOD OF MEASUREMENT OF CENTRE BEAM INTENSITY
AND BEAM ANGLE(S) OF REFLECTOR LAMPS


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,
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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.
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between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
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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.
The main task of IEC technical committees is to prepare International Standards. However, a
technical committee may propose the publication of a technical report when it has collected
data of a different kind from that which is normally published as an International Standard, for
example "state of the art".
IEC 61341, which is a technical report, has been prepared by subcommittee 34A: Lamps, of
IEC Technical Committee 34: Lamps and related equipment.
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
34A/1340/DTR 34A/1371/RVC

Full information on the voting for the approval of this technical report can be found in the
report on voting indicated in the above table.

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SIST EN 61341:2011
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