Amendment 1 - Electronic displays - Part 1-31: Generic - Practical information on the use of light measuring devices

General Information

Status
Published
Publication Date
13-Mar-2022
Technical Committee
Current Stage
PPUB - Publication issued
Completion Date
14-Mar-2022
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IEC TR 62977-1-31:2021/AMD1:2022 - Amendment 1 - Electronic displays - Part 1-31: Generic - Practical information on the use of light measuring devices
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IEC TR 62977-1-31
Edition 1.0 2022-03
TECHNICAL
REPORT
colour
inside
AMENDMENT 1
Electronic displays –
Part 1-31: Generic – Practical information on the use of light measuring devices
IEC TR 62977-1-31:2021-04/AMD1:2022-03(en)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC TR 62977-1-31
Edition 1.0 2022-03
TECHNICAL
REPORT
colour
inside
AMENDMENT 1
Electronic displays –
Part 1-31: Generic – Practical information on the use of light measuring devices
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.120; 31.260 ISBN 978-2-8322-1087-8

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 2 – IEC TR 62977-1-31:2021/AMD1:2022
© IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRONIC DISPLAYS –
Part 1-31: Generic – Practical information
on the use of light measuring devices
AMENDMENT 1
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.

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any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

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

rights. IEC shall not be held responsible for identifying any or all such patent rights.

Amendment 1 to IEC 62977-1-31:2021 has been prepared IEC technical committee 110:

Electronic displays.
The text of this Amendment is based on the following documents:
Draft Report on voting
110/1380/DTR 110/1404A/DVDTR

Full information on the voting for its approval can be found in the report on voting indicated in

the above table.
The language used for the development of this Amendment is English.
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IEC TR 62977-1-31:2021/AMD1:2022 – 3 –
© IEC 2022

This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in

accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available

at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are

described in greater detail at www.iec.ch/standardsdev/publications/.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under webstore.iec.ch in the data related to the

specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The "colour inside" logo on the cover page of this document 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.
____________
INTRODUCTION to Amendment 1

This document provides additional information to IEC TR 62977-1-31:2021 regarding the

influence of spectral stray light and spectral bandwidth of a spectroradiometer on chromaticity

measurements. It is described in Annex E.

This document also provides the corrections of editorial errors of IEC TR 62977-1-31:2021. The

corrections are:
– Typos are fixed:

• “fiber” and “x(λ), y(λ), z(λ)” is replaced with “fibre” and “𝑥𝑥(𝜆𝜆),𝑦𝑦(𝜆𝜆),𝑧𝑧(𝜆𝜆)”, respectively in

Figure 2,

• “(%)” in the label of vertical axis is removed in Figure 9, Figure 10, and Figure 12,

• “0” label of the tick mark of vertical axis is replaced with “1” in Figure C.4.

– The lists for Formula (A.1) and Formula (B.1) are aligned.
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– 4 – IEC TR 62977-1-31:2021/AMD1:2022
© IEC 2022
Figure 2 – Example of configurations for the input optics and detector

Replace, in Figure 2, Figure 2b) and Figure 2c) with the following new Figure 2b) and Figure

2c):
b) Colorimeter c) Spectroradiometer with spectrometer using
grating and array detector
5.5.2.1 General
Replace, in NOTE 2, the fourth sentence with the following new sentence:

Experimental data demonstrating the influence of spectral stray light in a specific application are shown in Annex E

[12].
Add, after NOTE 2, the following new NOTE 3:

NOTE 3 The influence of spectral bandwidth on chromaticity measurements of narrow spectral linewidth light is

shown in Annex E.
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IEC TR 62977-1-31:2021/AMD1:2022 – 5 –
© IEC 2022
Figure 9 – Calculated chromaticity differences as a function of wavelength error
Replace Figure 9 with the following new figure:
a) DUT-1 (chromaticity coordinate, x) b) DUT-1 (chromaticity coordinate, y)
c) DUT-2 (chromaticity coordinate, x) d) DUT-2 (chromaticity coordinate, y)
e) DUT-3 (chromaticity coordinate, x) f) DUT-3 (chromaticity coordinate, y)
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– 6 – IEC TR 62977-1-31:2021/AMD1:2022
© IEC 2022

Figure 10 – Calculated chromaticity differences as a function of spectral bandwidth

Replace Figure 10 with the following new figure:
a) DUT-1 (chromati
...

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