IEC 62922:2016

IEC 62922 ®
Edition 1.0 2016-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Organic light emitting diode (OLED) panels for general lighting – Performance
requirements
Panneaux à diodes électroluminescentes organiques (OLED) destinés à
l’éclairage général – Exigences de performance
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IEC 62922 ®
Edition 1.0 2016-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Organic light emitting diode (OLED) panels for general lighting – Performance

requirements
Panneaux à diodes électroluminescentes organiques (OLED) destinés à

l’éclairage général – Exigences de performance

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.140.99 ISBN 978-2-8322-3754-0

– 2 – IEC 62922:2016 © IEC 2016
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 General statement and test conditions . 7
4.1 General statement . 7
4.2 General test conditions . 7
4.3 Stabilization . 8
4.3.1 General requirements for stabilization. 8
4.3.2 Current-driven stabilization . 8
4.3.3 Voltage-driven stabilization . 8
5 Marking . 8
5.1 Contents and location . 8
5.2 Information on reliability of electrical connection . 9
6 Input power . 9
7 Initial photometric characteristics . 9
7.1 General . 9
7.2 Luminous flux . 10
7.3 Luminous efficacy . 10
7.4 Chromaticity coordinates . 10
7.5 Correlated colour temperature (CCT) . 10
7.6 Colour rendering index (CRI) . 10
7.7 Luminance uniformity . 11
7.7.1 Average luminance (L ) . 11
av
7.7.2 Luminance uniformity (U) . 11
7.8 Luminous intensity distribution . 11
7.9 Surface chromaticity uniformity . 12
7.10 Angular chromaticity uniformity . 12
8 Maintained photometric characteristics . 12
9 Reliability . 13
9.1 High temperature – high humidity operation . 13
9.2 High temperature – high humidity storage . 13
9.3 Reliability of connection . 13
10 Information for controlgear design . 14
Annex A (informative) Use of regional standards. 15
Annex B (informative) Measuring method of angular chromaticity uniformity . 16
Annex C (normative) Measuring method for luminous flux . 18
C.1 General . 18
C.2 Integrating sphere measurements . 18
C.2.1 Integrating sphere methods and installation position . 18
C.2.2 Size of the integrating sphere . 18
C.3 Goniophotometric measurements . 19
Annex D (informative) Tests of robustness of terminations and connectors . 20
D.1 General . 20
D.2 Wire terminations and pin type connectors . 20

D.2.1 General . 20
D.2.2 Tensile test . 20
D.2.3 Bending test . 20
D.2.4 Torsion test . 20
D.3 Flexible flat terminations . 20
D.3.1 General . 20
D.3.2 Peel test A . 21
D.3.3 Peel test B . 21
D.4 Soldering . 21
Annex E (informative)  Information for controlgear design . 22
E.1 General . 22
E.2 Operation . 22
E.3 Characteristics of the driver output current . 22
E.4 Characteristics of the driver output voltage . 23
E.5 Dimming . 23
E.6 Short-circuit protection . 23
Annex F (informative) Information for luminaire design . 24
Bibliography . 25

Figure C.1 – 4π geometry (left), 2π geometry sphere (centre) and 2π geometry
hemisphere (right). 18
Figure D.1 – Schematic diagram of peel test A. 21
Figure E.1 – Voltage and luminance behaviour at constant current operation . 22

Table 1 – Contents and location of marking . 9
Table B.1 – Chromaticity coordinates for all viewing angles between 0° and 80° in 5°
steps. 16
Table B.2 – Colour difference between all chromaticity coordinate pairs . 17

– 4 – IEC 62922:2016 © IEC 2016
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ORGANIC LIGHT EMITTING DIODE (OLED) PANELS
FOR GENERAL LIGHTING – PERFORMANCE REQUIREMENTS

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 62922 has been prepared by subcommittee 34A: Lamps, of IEC
technical committee 34: Lamps and related equipment.
The text of this standard is based on the following documents:
FDIS Report on voting
34A/1942/FDIS 34A/1956/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
In this standard, the following print types are used:
– requirements: roman type,
– test specifications: italic type,
– notes: smaller roman type.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://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 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.
– 6 – IEC 62922:2016 © IEC 2016
ORGANIC LIGHT EMITTING DIODE (OLED) PANELS
FOR GENERAL LIGHTING – PERFORMANCE REQUIREMENTS

1 Scope
This document specifies the performance requirements of OLED tiles and panels for use on
DC supplies up to 120 V or AC supplies up to 50 V at 50 Hz or 60 Hz for indoor and similar
general lighting purposes.
NOTE In this current edition, life (life time and maintained values) is not addressed. This is intended to be
covered in a future amendment.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements of this document. For dated references, only the edition
cited applies. For undated references, the latest edition of the referenced document (including
any amendments) applies.
IEC 60050-845, International Electrotechnical Vocabulary. Lighting (available at
http://www.electropedia.org)
IEC 62868, Organic light emitting diode (OLED) panels for general lighting – Safety
requirements
IEC TR 62732, Three-digit code for designation of colour rendering and correlated colour
temperature
IEC TS 62972, General lighting – Organic light emitting diode (OLED) products and related
equipment – Terms and definitions
ISO 11664-5/CIE S 014-5/E:2009, Colorimetry – Part 5: CIE 1976 L*u*v* Colour space and u',
v' uniform chromaticity scale diagram
CIE 013.3:1995, Method of measuring and specifying colour rendering properties of light
sources
CIE TN 001:2014, Chromaticity difference specification for light source
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-845,
IEC TS 62972 and IEC 62868 as well as the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
test voltage
input voltage at which tests are carried out

3.2
test current
input current at which tests are carried out
3.3
test power
input power at which tests are carried out
3.4
initial value
photometric and electrical characteristics at the end of the ageing and stabilization time
3.5
average luminance
L
av
luminance averaged over the light output surface of an OLED panel in a direction
4 General statement and test conditions
4.1 General statement
The requirements of this document apply in addition to the requirements of IEC 62868.
The requirement applies for 95 % of the population (with a failure margin below 5 %, it is
considered that the product passed the test).
It is understood that reference to an OLED panel also includes reference to OLED tiles in the
requirements and tests of this document.
4.2 General test conditions
Unless otherwise specified, all measurements shall be made in a draught free room at a
temperature of 25 °C with a tolerance of ±5 °C, a relative humidity of 65 % maximum and
steady state operation of the OLED panel. The temperature shall be maintained within ±2 °C
during the test. The temperature shall be measured in the integrating sphere or at the point
within 1,5 m from the OLED panel.
The tests shall be conducted at the rated current or voltage unless otherwise specified in this
document.
The test shall be made with the OLED panel in the horizontal mounting position with the
surface emitting the largest fraction of luminous flux directed upwards, unless specified
otherwise by the manufacturer. The mounting position shall be recorded in the documentation.
If all surfaces are intended to emit the same luminous flux, the orientation is at the discretion
of the test laboratory. The operating position shall be maintained during the entire test.
In the case of constant current operation: The test current, unless otherwise specified, shall
be stable within ±0,5 % during the performance test of an OLED panel. The total harmonic
content of the input shall not exceed 3 %.
In the case of constant voltage operation: The test voltage, unless otherwise specified, shall
be stable within ±0,05 % or 5 mV whichever is greater during the performance test of an
OLED panel. The total harmonic content of the input shall not exceed 3 %. The tolerance of
±0,05 % is applicable for DC supplies only. The tolerance for AC supplies is under
consideration. The test voltage shall be measured at the terminals of the OLED panel.

– 8 – IEC 62922:2016 © IEC 2016
The OLED panel shall be mounted in such a way that thermal contact between the
measurement equipment, sample holder and OLED panel is minimal. During stabilization and
measurement, an OLED panel shall only be in contact with the measurement equipment near
its edges and contact ledges. All other parts of the panel, especially the light output surface
and the opposing surface (the back of the OLED panel) shall be open to air, unless otherwise
specified by the manufacturer.
NOTE The harmonic content is understood as the r. m. s. summation of the individual harmonic components using
the fundamental as 100 %.
4.3 Stabilization
4.3.1 General requirements for stabilization
Stabilization is conducted in a draught free room at a temperature of 25 °C ± 5 °C. The
temperature shall be maintained within ±2 °C during stabilization. The temperature shall be
measured in the integrating sphere or the point within 1,5 m from the OLED panel.
If stabilization conditions, according to 4.3.2 or 4.3.3, are not achieved within 60 min, the
measurement may be started and the observed fluctuations shall be reported.
4.3.2 Current-driven stabilization
This method of stabilization is used for OLED panels intended to be operated primarily in
constant current mode and OLED panels for which the selection of the operating mode is left
to the customer.
The OLED panel shall be powered with a constant input current stable within ±0,5 %.
During the stabilization period, measurements of the voltage are made at least at 1 min
intervals. The OLED panel under test may be regarded as stable and suitable for test
purposes if the difference of maximum and minimum readout voltage observed over the last
5 min is less than 0,5 %.
4.3.3 Voltage-driven stabilization
This method of stabilization is used for OLED panels intended to be operated primarily in
constant voltage mode.
The OLED panel shall be powered with a constant input voltage stable within ±0,05 %.
During the stabilization period, measurements of the current are made at least at 1 min
intervals. The OLED panel under test may be regarded as stable and suitable for test
purposes if the difference of maximum and minimum readout current observed over the last
5 min is less than 1 %.
5 Marking
5.1 Contents and location
OLED panels shall be marked according to Table 1.

Table 1 – Contents and location of marking
Parameters Location
Rated luminous flux (lm) Mandatory on packaging or product information
Average luminance (cd/m ) Mandatory on packaging or product information
Photometric code (according to IEC TR 62732) Mandatory on packaging or product information
Rated chromaticity coordinates (in u’v’ coordinates) and Mandatory on packaging or product information
chromaticity coordinate range (expressed by Δu’v’, a u’v’ circle
or a u’v’ quadrangle)
Correlated colour temperature (K) Mandatory on packaging or product information
Rated colour rendering index Mandatory on packaging or product information
Operating temperature range (°C) Mandatory on packaging or product information
Rated luminous efficacy (lm/W) Mandatory on packaging or product information
Luminance uniformity (%) Mandatory on packaging or product information
a
Luminous intensity distribution Mandatory on packaging or product information
Surface chromaticity uniformity and location of measurement Mandatory on packaging or product information
spots (if applicable)
Angular chromaticity uniformity Mandatory on packaging or product information
Rated location and dimensions of the light output surface Mandatory on packaging or product information
NOTE The operating temperature range specifies maximum and minimum temperatures of the OLED panel at

which the OLED panel will function as intended. The operating temperatures are measured according to Annex F.
a
This requirement is fulfilled if the data file is made available electronically.

5.2 Information on reliability of electrical connection
Information shall be provided in the datasheet on how the electrical connection of an OLED
panel is made, unless the connection method is obvious. This information shall include, as
applicable, information on:
– requirements for connectors (e.g. wire size, material, connector specification);
– method for attaching connectors (e.g. solder time and temperature);
– reliability of connection (e.g. maximum pull force and appropriate test setup);
– additional safeguards required (e.g. external strain relief).
6 Input power
The general test conditions and stabilization according to 4.2 and 4.3 shall apply. The input
power of the OLED panel is measured.
The measured input power shall not exceed the rated power by more than 10 %.
7 Initial photometric characteristics
7.1 General
The initial values of photometric characteristics shall be measured after stabilization of the
OLED panel.
For operation, stabilization and test conditions of an OLED panel, 4.2 and 4.3 apply.

– 10 – IEC 62922:2016 © IEC 2016
7.2 Luminous flux
Annex C applies.
The initial luminous flux shall not deviate by more than 10 % from the rated initial luminous
flux.
NOTE A review of the methods in use for luminous flux measurement is given with CIE 084:1989 and
CIE S 025:2015, 4.5 and 6.2. A more specific measurement method for OLED panels is in preparation in CIE.
7.3 Luminous efficacy
OLED panel efficacy shall be calculated from the measured initial luminous flux of the
individual OLED panel, divided by the measured initial input power of the same individual
OLED panel.
The OLED panel efficacy shall not be less than 90 % of the rated OLED panel efficacy as
declared by the manufacturer of the responsible vendor.
7.4 Chromaticity coordinates
The chromaticity coordinates shall be derived from the spatially integrated measured spectral
characteristics. The test is performed as described in 7.2. The u’,v’ chromaticity coordinates
are calculated as described in ISO 11664-5 CIE S 014-5/E.
For the calculation of ∆(u',v'), CIE TN 001:2014, Clause 4 applies.
Where only a rated chromaticity coordinate pair is given in the datasheet: the difference
Δ(u’,v’) between the rated and measured chromaticity coordinate shall be less than 0,005.
Where a range of chromaticity coordinates is stated in the datasheet: The measured
chromaticity coordinate of an OLED panel shall not fall outside the rated chromaticity
coordinate range.
7.5 Correlated colour temperature (CCT)
The CCT shall be derived from the spatially integrated measured spectral characteristics. The
test is performed as described in 7.2.
A requirement is not needed here as it is given for chromaticity coordinates already.
NOTE For further information about calculation of the CCT, see A. R. Robertson, “Computation of Correlated
Color Temperature and Distribution Temperature,” Journal of the Optical Society of America, Vol 58, Issue 11, pp.
1528-1535 (1968)
7.6 Colour rendering index (CRI)
The CRI shall be derived from the spatially integrated measured spectral characteristics. The
test is performed as described in 7.2. The CRI shall be calculated according to
CIE 013.3:1995.
The initial CRI shall not be less than the rated CRI minus 5.

7.7 Luminance uniformity
7.7.1 Average luminance (L )
av
7.7.1.1 The initial average luminance shall not deviate from the rated average luminance
by more than 10 %.
7.7.1.2 If using an imaging luminance measurement devices (ILMD), the measurement of
average luminance (L ) shall be carried out in perpendicular direction to the light output
av
surface of an OLED panel. The average luminance shall be calculated from an image of the
entire light output surface with an exclusion zone of 1 mm to 3 mm from the edge.
7.7.1.3 If using a spot luminance meter, the measurement of average luminance (L )
av
shall be carried out in perpendicular direction to the light output surface of an OLED panel.
The distance from the edge of the light output surface to the closest measurement spot
perimeter shall be at least 3 mm.
The remaining lighting area shall then be subdivided into quadrilateral areas with a side
length corresponding to a viewing angle of not more than 0,5° at a viewing distance of 1,5 m.
The spot size shall fit into the quadrilateral area with a clearance of at least 1 mm.
Example: For an 0,5° viewing angle, the side length l of a subdivision is given by
l = tan(0,5°) x 1,5 m = 0,013 m = 1,3 cm. So a 10 x 10 cm lighting area would have to be
divided into 10/1,3 ≈ 7,7, i. e. 7 x 7 segments.
The arithmetic average of all luminance values of the measured areas is taken as the initial
average luminance.
7.7.2 Luminance uniformity (U)
The initial luminance uniformity shall be not more than 5 % below the rated luminance
uniformity.
The luminance uniformity quantifies how large the change of luminance within the rated light
output area is. It is calculated using the following formula:
U = [1 – (L – L )/(L + L )] x 100 % = [2 x L /(L + L )] x 100 % (1)
max min max min min max min
L and L are the minimum and maximum luminance values measured according to 7.7.1.
min max
If using an ILMD, the average luminance in the measurement areas as specified in 7.7.1.3
may be used for determining L and L and calculating the initial luminance uniformity.
min max
NOTE The luminance uniformity calculated in this way does not necessarily represent the human perception of
uniformity accurately. Luminance distributions with the same uniformity value can have quite different visual
appearance.
7.8 Luminous intensity distribution
Luminous intensity distribution data shall be available. This data shall be provided in
accordance with an established international or regional format. It shall be available in
electronic file format (see Annex A).
Unless otherwise specified by the manufacturer, the luminous intensity distribution of an
OLED panel shall be measured in far-field condition, where the inverse-square law is
sufficiently satisfied.
– 12 – IEC 62922:2016 © IEC 2016
7.9 Surface chromaticity uniformity
The initial surface chromaticity uniformity shall not deviate by more than 0,003 from the rated
surface chromaticity uniformity.
The surface chromaticity uniformity is measured by means of an ILMD or an instrument
capable of measuring directional chromaticity.
The chromaticity measuring device shall be aligned perpendicular to the light output surface.
The measurement areas are determined according to 7.7.1.3.
The u’,v’ chromaticity coordinates at each measurement area are used to determine the
chromaticity difference between all pairs of areas i and j, where i ≠ j. The following formula is
used:
2 2
′ ′ (′ ′) (′ ′) (2)
Δ(u ,v )= u −u + v−v
i j i j
The surface chromaticity uniformity is defined as the largest colour difference Δ(u’,v’) between
any two areas.
7.10 Angular chromaticity uniformity
The initial angular chromaticity uniformity shall not deviate by more than 0,003 from the rated
angular chromaticity uniformity.
The angular chromaticity uniformity quantifies how visible the change of colour with the
viewing angle is for an observer. The viewing angle is defined as the angle to the surface
normal.
The viewing angle dependent chromaticity coordinates of an OLED panel are measured for
viewing angles of 0° to 80° in steps of 5° and expressed in u’,v’. For every combination of
chromaticity coordinate pairs, the chromaticity difference Δ(u’,v’) is calculated according to
Equation (2).
Unless a preferred azimuthal measurement direction is specified by the manufacturer,
azimuthal symmetry of the OLED panel is assumed.
The angular chromaticity uniformity is the average of the colour differences between all pairs
of chromaticity coordinates.
Unless otherwise specified by the manufacturer, the angular chromaticity uniformity of an
OLED panel should be measured in far-field condition, where the inverse-square law is
sufficiently satisfied.
NOTE See Annex B for an example calculation.
8 Maintained photometric characteristics
Placeholder clause for future amendments.

9 Reliability
9.1 High temperature – high humidity operation
OLED panels shall sustain operation under high temperature and high humidity conditions.
An OLED panel is kept in a humidity cabinet having a relative humidity of (90 ± 5) % for 48 h.
A temperature of internal air shall be maintained at (60 ± 2) °C. The test shall be conducted
so that no condensation or water droplets appear on any part of the OLED panel. The OLED
panel shall be operated inside the humidity cabinet with rated current or rated voltage, as
applicable. After the high temperature – high humidity operation, the luminous flux and
chromaticity of the OLED panel are measured according to 7.2 and 7.4, respectively.
Compliance:
The measured luminous flux of OLED panels shall not be less than 90 % of the initial
luminous flux.
The colour difference Δ(u’,v’) between the measurements according to 7.4 taken before and
after the high temperature operation shall not exceed 0,005 in the u’,v’ colour space.
For constant current operation, the measured voltage shall not exceed 105 % of the initial
voltage. For constant voltage operation, the measured current shall not drop below 90 % of
the initial current.
9.2 High temperature – high humidity storage
OLED panels shall sustain storage under high temperature and high humidity conditions.
An OLED panel is kept in a humidity cabinet having a relative humidity of (90 ± 5) % for 500 h.
A temperature of internal air shall be maintained at (60 ± 2) °C. The OLED panel shall be
placed in the humidity cabinet where humidity and temperature is maintained without
supplying electricity. The test shall be conducted so that no condensation or water droplets
appear on any part of the OLED panel. After the high temperature – high humidity storage test,
the luminous flux and chromaticity of the OLED panel are measured according to 7.2 and 7.4,
respectively. Any convenient mounting position may be used during storage.
Compliance:
The measured luminous flux of OLED panels shall not be less than 90 % of the initial
luminous flux.
There shall be no visible defect (such as dark spots) larger than 0,5 mm when the OLED
panel is switched on.
The colour difference Δ(u’,v’) between the measurements according to 7.4 taken before and
after the load shall not exceed 0,005 in the u’,v’colour space.
For constant current operation, the measured voltage shall not exceed 105 % of the initial
voltage. For constant voltage operation, the measured current shall not drop below 90 % of
the initial current.
9.3 Reliability of connection
The information on reliability of connection shall be accurate.

– 14 – IEC 62922:2016 © IEC 2016
The test sample is installed as instructed in the manufacturer’s literature. The sample is
subjected to all test methods for which the manufacturer has made performance claims in the
instructions.
Compliance:
If the test method is destructive, the measured performance shall not be less than 95% of the
claimed performance (e.g. pull force).
If the test method is non-destructive, no parts of the OLED panel may become detached
during the test. The OLED panel, when switched on after the test, shall not show any visible
defects.
NOTE For examples of appropriate test methods, see Annex D.
10 Information for controlgear design
Information for controlgear design is given in Annex E. This should be followed for proper
operation of OLED tiles and panels.

Annex A
(informative)
Use of regional standards
In some regions the use of local standards, as alternatives to those detailed in the text of this
document may be preferred. Details of those that have been made known by national
committees are as follows:
Europe
EN 13032-1:2004+A1:2012, Light and lighting – Measurement and presentation of
photometric data of lamps and luminaires – Part 1: Measurement and file format
EN 13032-2:2004/AC:2007, Light and lighting – Measurement and presentation of photometric
data of lamps and luminaires – Part 2: Presentation of data for indoor and outdoor work
places
EN 13032-3:2007, Light and lighting – Measurement and presentation of photometric data of
lamps and luminaires – Part 3: Presentation of data for emergency lighting of work places
Canada and USA
IES-LM75-01, Goniophotometer Types and Photometric Coordinates
IES-LM-63-02, Standard File Format for the Electronic Transfer of Photometric Data and
Related Information
IES-LM-58-94, Guide to Spectroradiometric Measurements
IES-LM-77-09, Intensity Distribution of Luminaires and Lamps Using Digital Screen Imaging
Photometry
ANSI/IES-RP-16-07, Nomenclature and Definitions for Illuminating Engineering
Japan
JISC8152-2, Photometry of white light emitting diode for general lighting – Part 2: LED
modules and LED light engines
JISC8152-3, Photometry of white light emitting diode for general lighting – Part 3:
measurement methods for lumen maintenance
JISC8105-5, Luminaires – Part 5: Gonio-photometric methods
JISZ8724, Methods of colour measurement Light -source -colour
JISZ8725, Methods for determining distribution temperature and color temperature or
correlated color temperature of light sources
JISZ8726, Method of Specifying Colour Rendering Properties of Light Sources

– 16 – IEC 62922:2016 © IEC 2016
Annex B
(informative)
Measuring method of angular chromaticity uniformity
Example calculation of angular chromaticity uniformity
If the measured, angle-dependent chromaticity coordinates are as shown in Table B.1, the
colour difference between 0° and 10°:
2 2 2 2
Δ(u′,v′)= (u′−u′ ) +(v′−v′ ) = (0,254− 0,252) +(0,520− 0,521) = 0,002 236
0 10 0 10
Table B.1 – Chromaticity coordinates for all
viewing angles between 0° and 80° in 5° steps
Angle to surface normal CIE 1976 u' CIE 1976 v'
0° 0,254 0,520
5° 0,253 0,520
10° 0,252 0,521
15° 0,251 0,521
20° 0,250 0,521
25° 0,249 0,521
30° 0,248 0,522
35° 0,247 0,522
40° 0,246 0,522
45° 0,245 0,522
50° 0,244 0,523
55° 0,243 0,523
60° 0,242 0,523
65° 0,240 0,523
70° 0,239 0,524
75° 0,238 0,524
80° 0,237 0,524
The colour difference sets calculated from Equation (2) are given in Table B.2.

Table B.2 – Colour difference between all chromaticity coordinate pairs
0° 5° … 40° … 70° 75° 80°
0° – 0,001 00 0,008 25 0,015 5 0,016 5 0,017 5
5° – 0,007 28 0,014 6 0,015 5 0,016 5

10° 0,006 08 0,013 3 0,014 3 0,015 3

15° 0,005 10 0,012 4 0,013 3 0,014 3
20°  0,004 12 0,011 4 0,012 4 0,013 3
25°  0,003 16 0,010 4 0,011 4 0,012 4

30° 0,002 00 0,009 22 0,010 2 0,011 2
35°  0,001 00 0,008 25 0,009 22 0,010 2
40°  – 0,007 28 0,008 25 0,009 22

45° 0,006 32 0,007 28 0,008 25
50°   0,005 10 0,006 08 0,007 07
55°   0,004 12 0,005 10 0,006 08

60° 0,003 16 0,004 12 0,005 10

65° 0,001 41 0,002 24 0,003 16
70°   – 0,001 00 0,002 00
75° – 0,001 00
80° –
The chromaticity angular uniformity is the average of all the colour differences in Table B.2. In
this example, the chromaticity angular uniformity is 0,006 59.

– 18 – IEC
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