SIST EN 62496-2-4:2013
(Main)Optical circuit boards - Part 2-4: Tests - Optical transmission test for optical circuit boards without input/output fibres
Optical circuit boards - Part 2-4: Tests - Optical transmission test for optical circuit boards without input/output fibres
This part of IEC 62496 specifies the test method to decide whether to pass or fail an optical circuit board using direct illumination by a light. The input ports are directly illuminated and the optical intensity from the output ports of the optical circuit board is monitored using an area image sensor. Excess optical losses are the calculated from total detected intensities of light from a sample to be measured and from a control sample. This method is used to illuminate uniformly the input port of the optical circuit board (OCB) with a larger area than the core area, obtain the radiance of an area image from the corresponding output port of the OCB using an area image sensor, and evaluate whether to pass or fail using the radiance obtained compared to that of a control sample. The advantage of this test method is that the alignment procedure between a launch fibre and the OCB is not necessary.
Optische Leiterplatten - Grundlegende Prüf- und Messverfahren - Teil 2-4: Optische Übertragungsprüfung für optische Leiterplatten ohne Eingangs-/Ausgangsfasern
Cartes à circuits optiques - Procédures fondamentales d'essais et de mesures - Partie 2-4: Essai de transmission optique des cartes à circuits optiques sans fibres d'entrée/sortie
La CEI 62496-2-4:2013 spécifie la méthode d'essai utilisée pour déterminer l'acceptation ou le rejet d'une carte à circuits optiques en la soumettant à l'éclairement direct d'une lampe. On soumet les ports d'entrée à un éclairage direct et on surveille l'intensité optique issue des ports de sortie de la carte à circuits optiques à l'aide d'un capteur d'image bidimensionnel. On calcule ensuite les affaiblissements optiques excédentaires à partir de la somme des intensités lumineuses détectées sur un échantillon à mesurer et sur un échantillon témoin. Cette méthode permet d'éclairer uniformément le port d'entrée de la carte à circuits optiques (OCB) sur une surface supérieure à celle du c ur, d'obtenir la luminance de l'image bidimensionnelle issue du port de sortie correspondant de l'OCB à l'aide d'un capteur d'image bidimensionnel, et d'évaluer s'il faut accepter ou rejeter la carte en comparant la luminance obtenue à celle d'un échantillon témoin. Cette méthode d'essai a pour avantage de ne pas nécessiter d'alignement entre une fibre d'injection et l'OCB. Mots clés: essai utilisée pour déterminer l'acceptation ou le rejet d'une carte à circuits optiques, OCB, capteur d'image bidimensionnel
Plošče z optičnimi vezji - 2-4. del: Preskusi - Preskus optičnega prenosa na ploščah z optičnimi elementi brez vhodno/izhodnih vlaken
Ta del standarda IEC 62496 določa preskusno metodo, da se ugotovi, ali je plošča z optičnimi vezji uspešna ali neuspešna, pri uporabi neposredne osvetlitve z lučjo. Vhodna vrata so neposredno osvetljena in optična intenzivnost iz izhodnih vrat plošče z optičnimi vezji se spremlja s senzorjem slike področja. Presežne optične izgube so izračun iz skupnih zaznanih intenzitet luči iz vzorca za merjenje in kontrolnega vzorca. Ta metoda se uporablja za enakomerno osvetlitev vhodnih vrat plošče z optičnimi vezji (OCB) z območjem, ki je večje od osrednjega območja, pridobitev sevanja slike območja iz ustreznih izhodnih vrat OCB z uporabo senzorja slike območja ter oceno za uspeh ali neuspeh z uporabo pridobljenega sevanja v primerjavi s kontrolnim vzorcem. Prednost te preskusne metode je ta, da poravnalni postopek med zagonskim vlaknom in OCB ni potreben.
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Optical circuit boards - Part 2-4: Tests - Optical transmission test for optical circuit boards without input/output fibres33.180.01VSORãQRFibre optic systems in general31.180SORãþHPrinted circuits and boardsICS:Ta slovenski standard je istoveten z:EN 62496-2-4:2013SIST EN 62496-2-4:2013en01-oktober-2013SIST EN 62496-2-4:2013SLOVENSKI
STANDARD
SIST EN 62496-2-4:2013
EUROPEAN STANDARD EN 62496-2-4 NORME EUROPÉENNE
EUROPÄISCHE NORM August 2013
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2013 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62496-2-4:2013 E
ICS 33.180.01
English version
Optical circuit boards -
Basic test and measurement procedures -
Part 2-4: Optical transmission test for optical circuit boards without input/output fibres (IEC 62496-2-4:2013)
Cartes à circuits optiques -
Procédures fondamentales d'essais et de mesures -
Partie 2-4: Essai de transmission optique des cartes à circuits optiques sans fibres d'entrée/sortie (CEI 62496-2-4:2013)
Optische Leiterplatten -
Grundlegende Prüf- und Messverfahren -
Teil 2-4: Optische Übertragungsprüfung für optische Leiterplatten ohne Eingangs-/Ausgangsfasern (IEC 62496-2-4:2013)
This European Standard was approved by CENELEC on 2013-07-23. 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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management Centre 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
SIST EN 62496-2-4:2013
EN 62496-2-4:2013 - 2 - Foreword The text of document 86/449/FDIS, future edition 1 of IEC 62496-2-4, prepared by IEC TC 86 "Fibre optics" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 62496-2-4:2013. The following dates are fixed: – latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2014-04-23 – latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2016-07-23
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 62496-2-4:2013 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 62496-2-1 NOTE Harmonised as EN 62496-2-1. IEC 60793-2 NOTE Harmonised as EN 60793-2. IEC 62496 NOTE Harmonised in EN 62496 series (not modified).
SIST EN 62496-2-4:2013
- 3 - EN 62496-2-4:2013 Annex ZA (normative)
Normative references to international publications with their corresponding European publications The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
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 IEC 60068-1
- Environmental testing - Part 1: General and guidance EN 60068-1
-
SIST EN 62496-2-4:2013
SIST EN 62496-2-4:2013
IEC 62496-2-4 Edition 1.0 2013-06 INTERNATIONAL STANDARD NORME INTERNATIONALE Optical circuit boards – Basic test and measurement procedures –
Part 2-4: Optical transmission test for optical circuit boards without input/output fibres
Cartes à circuits optiques – Procédures fondamentales d'essais et de mesures –
Partie 2-4: Essai de transmission optique des cartes à circuits optiques sans fibres d'entrée/sortie
INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE S ICS 33.180.01 PRICE CODE CODE PRIX ISBN 978-2-83220-868-7
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale ®
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Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé. SIST EN 62496-2-4:2013 colourinside
– 2 – 62496-2-4 © IEC:2013 CONTENTS FOREWORD . 4 1 Scope . 6 2 Normative references . 6 3 Terms, definitions and abbreviations . 6 3.1 Terms and definitions . 6 3.2 Abbreviations . 7 4 Measurement conditions . 7 5 Inspection methods . 8 5.1 Equipment . 8 5.1.1 Light source system . 9 5.1.2 Observation system . 10 5.1.3 Data processing unit . 11 5.1.4 Unit for holding the sample . 12 5.2 Measurement procedures of relative optical loss . 12 5.2.1 Preparation of light source . 12 5.2.2 Preparation of the optical observation system measuring equipment . 13 5.2.3 Measuring coordinates of I/O ports . 13 5.2.4 Capturing of optical images for control sample and samples to be measured . 13 5.2.5 Image data processing (detection of I/O port range) . 14 5.2.6 Calculation of relative loss . 14 5.3 Evaluation of pass or fail . 15 Annex A (informative)
Example of an optical transmission test for an OCB without I/O fibres . 16 Annex B (informative)
Measurement of input and output ports in offset positions . 19 Bibliography . 21
Figure 1 – Optical transmission test system without I/O fibres for surface I/O type OCB . 8 Figure 2 – Optical transmission test system without I/O fibres for end-face I/O type OCB . 9 Figure 3 – Schematic diagram of measurement of uniformity of illumination area . 10 Figure 4 – Example of obtained uniformity of illumination area . 10 Figure 5 – Example of obtained sensitivity of an image sensor (input uniformity within 1 %) . 11 Figure 6 – Position alignment of light source . 13 Figure 7 – Example of captured image and extracted I/O port range by image binarization . 14 Figure 8 – Calculation of the total detected intensity of extracted I/O port range from detected intensity for each pixel . 15 Figure A.1 – Example of relative optical loss measurement . 17 Figure A.2 – Example of reproducibility of relative optical loss measurement . 18 Figure B.1 – Ray traces for OCBs with mirror having designated mirror angle (left) and not designated one (right) . 19 Figure B.2 – Difference of focus positions between without offset and with offset . 20 Figure B.3 – Optical images at surface of OCB plane (without offset) and offset position (with offset). 20 SIST EN 62496-2-4:2013
62496-2-4 © IEC:2013 – 3 –
Table A.1 – Observation system . 16 Table A.2 – Light source . 16 Table A.3 – Samples to be measured . 16
SIST EN 62496-2-4:2013
– 4 – 62496-2-4 © IEC:2013 INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
OPTICAL CIRCUIT BOARDS –
BASIC TEST AND MEASUREMENT PROCEDURES –
Part 2-4: Optical transmission test for optical circuit boards
without input/output fibres
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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 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 62496-2-4 has been prepared by IEC technical committee 86: Fibre optics. The text of this standard is based on the following documents: FDIS Report on voting 86/449/FDIS 86/456/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. SIST EN 62496-2-4:2013
62496-2-4 © IEC:2013 – 5 – A list of all parts of the IEC 62496 series, published under the general title Optical circuit boards – Basic test and measurement procedures, can be found on the IEC website.
Future standards in this series will carry the new general title as cited above. Titles of existing standards in this series will be updated at the time of the next edition. The committee has decided that the contents of this publication will remain unchanged until the stability 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.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer.
SIST EN 62496-2-4:2013
– 6 – 62496-2-4 © IEC:2013 OPTICAL CIRCUIT BOARDS –
BASIC TEST AND MEASUREMENT PROCEDURES –
Part 2-4: Optical transmission test for optical circuit boards
without input/output fibres
1 Scope This part of IEC 62496 specifies the test method to decide whether to pass or fail an optical circuit board using direct illumination by a light. The input ports are directly illuminated and the optical intensity from the output ports of the optical circuit board is monitored using an area image sensor. Excess optical losses are the calculated from total detected intensities of light from a sample to be measured and from a control sample. This method is used to illuminate uniformly the input port of the optical circuit board (OCB) with a larger area than the core area, obtain the radiance of an area image from the corresponding output port of the OCB using an area image sensor, and evaluate whether to pass or fail using the radiance obtained compared to that of a control sample. The advantage of this test method is that the alignment procedure between a launch fibre and the OCB is not necessary. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60068-1, Environmental testing – Part 1: General and guidance 3 Terms, definitions and abbreviations 3.1 Terms and definitions For the purposes of this document, the following terms, definitions and abbreviations apply. 3.1.1
shading non-uniformity of detected intensity of an image caused by non-uniformity of the sensitivity of elements of an area image sensor and vignetting depending on the optical system Note 1 to entry: Correction of the non-uniformity of the detection sensitivity of elements of a uniform one is called "shading correction". 3.1.2
gamma value factor “” for a camera expressed by the following equation: (input optical intensity signal) = A × (output image signal)
where A is a proportionality constant Note 1 to entry: The input optical intensity is linearly proportional to the output image signal . SIST EN 62496-2-4:2013
62496-2-4 © IEC:2013 – 7 – 3.1.3
telecentric optical system optical system where the optical input pupil and output pupil are placed at infinitely far positions and the main optical signal is parallel to the optical axis 3.1.4
distortion (distortion aberration) type of aberration Note 1 to entry: The optical image is not in proportion to the original target but is distorted. There are two types of distortion: one is the barrel type, where light is distorted outward; the other is the bobbin or pincushion type, where light is distorted inward near the edge of a lens. 3.1.5
area image sensor arrayed photo-detector in two dimensions, which can capture area image at once Note 1 to entry: There are two types of area image sensor: one is the CCD (charge coupled device); the other is the CMOS (complementary metal oxide semiconductor). 3.1.6
control sample sample having optical insertion loss already obtained by measurement procedure specified in IEC 62496-2-1 [1]1 Note 1 to entry: The core shape and numerical aperture of the control sample should be same as those of the samples to be measured. 3.1.7
relative optical loss difference between the total detected intensity obtained from the output port area of the sample to be measured and that for a control sample Note 1 to entry: The unit of relative optical loss is the decibel. 3.2 Abbreviations ACC automatic current control APC automatic power control CCD charged couple device CMOS complementary metal oxide semiconductor LED light emitting diode NA numerical aperture OCB optical circuit board 4 Measurement conditions All measurements are made under the conditions specified in IEC 60068-1, unless otherwise specified.
___________ 1 Figures in square brackets refer to the Bibliography. SIST EN 62496-2-4:2013
– 8 – 62496-2-4 © IEC:2013 5 Inspection methods 5.1 Equipment The test equipment shall consist of a light source system, an observation system, a sample holder and a data processor (image intake and image processor). The construction illustrated i
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