Traditional Chinese medicine -- Computerized tongue image analysis system

ISO 20498-2:2017 specifies the light environment necessary for the functioning of a computerized tongue image analysis system (CTIS). ISO 20498-2:2017 does not include the electrical safety and biocompatibility of the lighting component.

Médecine traditionnelle chinoise -- Système d’analyse d’images numérisées de la langue

General Information

Status
Published
Publication Date
16-May-2017
Current Stage
6060 - International Standard published
Start Date
12-Apr-2017
Completion Date
17-May-2017
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ISO 20498-2:2017 - Traditional Chinese medicine -- Computerized tongue image analysis system
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INTERNATIONAL ISO
STANDARD 20498-2
First edition
2017-05
Traditional Chinese medicine —
Computerized tongue image analysis
system —
Part 2:
Light environment
Médecine traditionnelle chinoise — Système d’analyse d’images
numérisées de la langue —
Partie 2: Environnement lumineux
Reference number
ISO 20498-2:2017(E)
ISO 2017
---------------------- Page: 1 ----------------------
ISO 20498-2:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form

or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior

written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of

the requester.
ISO copyright office
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copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved
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ISO 20498-2:2017(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Technical requirements ................................................................................................................................................................................ 1

4.1 Illuminance................................................................................................................................................................................................. 1

4.2 Colour temperature ............................................................................................................................................................................ 2

4.3 Colour rendering index .................................................................................................................................................................... 2

4.4 Illumination distribution................................................................................................................................................................ 2

4.5 Irradiance .................................................................................................................................................................................................... 2

4.6 Ultraviolet irradiance ........................................................................................................................................................................ 2

5 Test methods ............................................................................................................................................................................................................. 2

5.1 Measuring points on effective surface area .................................................................................................................... 2

5.2 Illuminance................................................................................................................................................................................................. 3

5.3 Colour temperature ............................................................................................................................................................................ 3

5.4 Colour rendering index .................................................................................................................................................................... 3

5.5 Illumination distribution................................................................................................................................................................ 3

5.6 Irradiance .................................................................................................................................................................................................... 3

5.7 Ultraviolet irradiance ........................................................................................................................................................................ 4

Annex A (informative) Spectral weighting function for assessing ultraviolet hazards ....................................5

Bibliography ................................................................................................................................................................................................................................ 6

© ISO 2017 – All rights reserved iii
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ISO 20498-2:2017(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

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ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).
...

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