Regulation No. 112-01
|Name:||Regulation No. 112-01|
|Description:||Headlamps - Asymmetrical Passing/Driving Beam - Filament Lamps and/or LED Modules.|
|Official Title:||Uniform Provisions Concerning the Approval of: Motor Vehicles Headlamps Emitting an Asymmetrical Passing Beam or a Driving Beam or Both and Equipped with Filament Lamps and/or LED Modules.|
|Country:||ECE - United Nations|
|Date of Issue:||2011-01-27|
|Amendment Level:||01 Series, Supplement 8|
|Number of Pages:||74|
|Vehicle Types:||Agricultural Tractor, Bus, Car, Component, Heavy Truck, Light Truck, Motorcycle|
|Subject Categories:||Lighting and Light Signalling Equipment|
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April 27, 2018
STATUS OF UNITED NATIONS REGULATION
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
MOTOR VEHICLE HEADLAMPS EMITTING AN ASYMMETRICAL
PASSING-BEAM OR A DRIVING-BEAM OR BOTH AND EQUIPPED
WITH FILAMENT LAMPS AND/OR LIGHT-EMITTING DIODE (LED) MODULES
00 series of amendments
Date of Entry into Force: 21.09.01
Supplement 6 to the 00 series of amendments
Date of Entry into Force: 10.10.06
Supplement 7 to the 00 series of amendments
Date of Entry into Force: 02.02.07
Supplement 8 to the 00 series of amendments
Date of Entry into Force: 11.07.08
Corr. 1 to Supplement 8 to the 00 series of amendments
Corr. 2 to Supplement 8 to the 00 series of amendments
Corr. 3 to Supplement 8 to the 00 series of amendments
Supplement 9 to the 00 series of amendments
Date of Entry into Force: 15.10.08
Supplement 10 to the 00 series of amendments
Date of Entry into Force: 22.07.09
Supplement 11 to the 00 series of amendments
Date of Entry into Force: 24.10.10
Supplement 12 to the 00 series of amendments
Date of Entry into Force: 19.08.10
01 series of amendments
Date of Entry into Force: 09.12.10
Corr. 1 to the 01 series of amendments
Supplement 1 to the 01 series of amendments
Date of Entry into Force: 28.10.11
Supplement 2 to the 01 series of amendments
Date of Entry into Force: 26.07.12
Supplement 3 to the 01 series of amendments
Date of Entry into Force: 18.11.12
Supplement 4 to the 01 series of amendments
Date of Entry into Force: 15.07.13
Supplement 5 to the 01 series of amendments
Date of Entry into Force: 15.06.15
Supplement 6 to the 01 series of amendments
Date of Entry into Force: 08.10.15
Supplement 7 to the 01 series of amendments
Date of Entry into Force: 10.10.17
Supplement 8 to the 01 series of amendments
Date of Entry into Force: 10.02.18
REGULATION NO. 112-01
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF MOTOR VEHICLE
HEADLAMPS EMITTING AN ASYMMETRICAL PASSING-BEAM OR A DRIVING-BEAM
OR BOTH AND EQUIPPED WITH FILAMENT LAMPS AND/OR LIGHT-EMITTING
DIODE (LED) MODULES
A. ADMINISTRATIVE PROVISIONS
2. Application for approval of a headlamp
B. TECHNICAL REQUIREMENTS FOR HEADLAMPS
5. General specifications
8. Gauging of discomfort
C. FURTHER ADMINISTRATIVE PROVISIONS
9. Modification of the headlamp type and extension of approval
10. Conformity of production
11. Penalties for non-conformity of production
12. Production definitively discontinued
13. Names and addresses of Technical Services responsible for conducting approval tests, and of
Type Approval Authorities
14. Transitional Provisions
A. ADMINISTRATIVE PROVISIONS
REGULATION NO. 112-01
This Regulation applies to headlamps for vehicles of Categories L, M, N and T .
For the purpose of this Regulation,
1.1. "Lens" means the outermost component of the headlamp (unit) which transmits light
through the illuminating surface;
1.2. "Coating" means any product or products applied in one or more layers to the outer face of
1.3. "Headlamps of different types" means headlamps which differ in such essential respects
1.3.1. The trade name or mark:
Lamps bearing the same trade name or mark but produced by different
manufacturers shall be considered as being of different types;
Lamps produced by the same manufacturer differing only by the trade name or mark
shall be considered as being of the same type.
1.3.2. The characteristics of the optical system;
1.3.3. The inclusion or elimination of components capable of altering the optical effects by
reflection, refraction, absorption and/or deformation during operation.
1.3.4. Suitability for right-hand or left-hand traffic or for both traffic systems;
1.3.5. The kind of beam produced (passing beam, driving beam or both);
1.3.6. The category of filament lamp used and/or the LED module specific identification code(s).
1.3.7. However, a device intended for the installation on the left side of the vehicle and the
corresponding device intended for the installation on the right side of the vehicle shall be
considered to be of the same type.
1.4. Headlamps of different "Classes" (A or B) mean headlamps identified by particular
2.2.4. For the test of plastic material of which the lenses are made:
126.96.36.199. Fourteen lenses;
188.8.131.52.1. Ten of these lenses may be replaced by ten samples of material at least 60 × 80mm in size,
having a flat or convex outer surface and a substantially flat area (radius of curvature not
less than 300mm) in the middle measuring at least 15 × 15mm;
184.108.40.206.2. Every such lens or sample of material shall be produced by the method to be used in mass
220.127.116.11. A reflector to which the lenses can be fitted in accordance with the manufacturer's
2.2.5. For testing the ultraviolet (UV)-resistance of light transmitting components made of plastic
material against UV radiation of LED modules inside the headlamp:
18.104.22.168. One sample of each of the relevant material as being used in the headlamp or one
headlamp sample containing these. Each material sample shall have the same appearance
and surface treatment, if any, as intended for use in the headlamp to be approved;
22.214.171.124. The UV-resistance testing of internal materials to light source radiation is not necessary if no
LED modules other than low-UV-types as specified in Annex 10 of this Regulation are being
applied or if provisions are taken, to shield the relevant headlamp components from UV
radiation, e.g. by glass filters.
2.2.6. One electronic light source control gear, if applicable.
2.3. The materials making up the lenses and coatings, if any, shall be accompanied by the test
report of the characteristics of these materials and coatings if they have already been
2.4. In the case of a type of lamp differing only by the trade name or mark from a type that has
already been approved it shall be sufficient to submit:
2.4.1. A declaration by the lamp manufacturer that the type submitted is identical (except in the
trade name or mark) with and has been produced by the same manufacturer as, the type
already approved, the latter being identified by its approval code;
2.4.2. Two samples bearing the new trade name or mark or equivalent documentation.
3.1. Headlamps submitted for approval shall bear the trade name or mark of the applicant.
3.2. They shall comprise, on the lens and on the main body, spaces of sufficient size for the
approval mark and the additional symbols referred to in Paragraph 4; these spaces shall be
indicated on the drawings referred to in Paragraph 2.2.1. above.
4.1.4. Notice of approval or of extension or refusal or withdrawal of approval or production
definitely discontinued of a type of headlamp pursuant to this Regulation shall be
communicated to the Parties to the 1958 Agreement applying this Regulation, by means of
a form conforming to the model in Annex 1 to this Regulation, with the indications according
to Paragraph 126.96.36.199.
188.8.131.52. If the headlamp is equipped with an adjustable reflector and if this headlamp is to be used
only in mounting positions according to the indications in Paragraph 184.108.40.206. the applicant
shall be obliged by the Type Approval Authority to inform the user in a proper way about the
correct mounting position(s).
4.1.5. In addition to the mark prescribed in Paragraph 3.1., an approval mark as described in
Paragraphs 4.2. and 4.3. below shall be affixed in the spaces referred to in Paragraph 3.2.
above to every headlamp conforming to a type approved under this Regulation.
4.2. Composition of the Approval Mark
The approval mark shall consist of:
4.2.1. An international approval mark, comprising:
220.127.116.11. A circle surrounding the Letter "E" followed by the distinguishing number of the country
which has granted approval;
18.104.22.168. The approval number prescribed in Paragraph 4.1.3. above;
4.2.2. The following additional symbol (or symbols):
22.214.171.124. On headlamps meeting left-hand traffic requirements only, a horizontal arrow pointing to the
right of an observer facing the headlamp, i.e. to the side of the road on which the traffic
126.96.36.199. On headlamps designed to meet the requirements of both traffic systems by means of an
appropriate adjustment of the setting of the optical unit or the filament lamp or LED
module(s), a horizontal arrow with a head on each end, the heads pointing respectively to
the left and to the right;
188.8.131.52. On headlamps meeting the requirements of this Regulation in respect of the passing beam
only, the Letters "C" for Class A headlamp or "HC" for Class B headlamp;
184.108.40.206 On headlamps meeting the requirements of this Regulation in respect of the driving beam
only, the Letters "R" for Class A headlamp or "HR" for Class B headlamp;
220.127.116.11. On headlamps meeting the requirements of this Regulation in respect of both the passing
beam and the driving beam, the Letters "CR" for Class A headlamp or "HCR" for Class B
18.104.22.168. On headlamps incorporating a lens of plastic material, the group of Letters "PL" to be affixed
near the symbols prescribed in Paragraphs 22.214.171.124. to 126.96.36.199. above;
4.3.2. Grouped, Combined or Reciprocally Incorporated Lamps
188.8.131.52. Where grouped, combined or reciprocally incorporated lamps have been found to comply
with the requirements of several Regulations, a single international approval mark may be
affixed, consisting of a circle surrounding the Letter "E" followed by the distinguishing
number of the country which has granted the approval, and an approval number. This
approval mark may be located anywhere on the grouped, combined or reciprocally
incorporated lamps, provided that:
184.108.40.206.1. It is visible as per Paragraph 4.2.5.;
220.127.116.11.2. No part of the grouped, combined or reciprocally incorporated lamps that transmits light can
be removed without at the same time removing the approval mark.
18.104.22.168. The identification symbol for each lamp appropriate to each Regulation under which
approval has been granted, together with the corresponding series of amendments
incorporating the most recent major technical amendments to the Regulation at the time of
issue of the approval, and if necessary, the required arrow shall be marked:
22.214.171.124.1. Either on the appropriate light-emitting surface,
126.96.36.199.2. Or in a group, in such a way that each of the grouped, combined or reciprocally incorporated
lamps may be clearly identified (see four possible examples in Annex 2).
188.8.131.52. The size of the components of a single approval mark shall not be less than the minimum
size required for the smallest of the individual marks by the Regulation under which
approval has been granted.
184.108.40.206. An approval number shall be assigned to each type approved. The same Contracting Party
may not assign the same number to another type of grouped, combined or reciprocally
incorporated lamps covered by this Regulation.
220.127.116.11. Figure 11 of Annex 2 to this Regulation gives examples of arrangements of approval marks
for grouped, combined or reciprocally incorporated lamps with all the above-mentioned
4.3.3. Lamps, the Lens of which are Used for Different Types of Headlamps and which may be
Reciprocally Incorporated or Grouped with Other Lamps
The provisions laid down in Paragraph 4.3.2. above are applicable.
18.104.22.168. In addition, where the same lens is used, the latter may bear the different approval marks
relating to the different types of headlamps or units of lamps, provided that the main body of
the headlamp, even if it cannot be separated from the lens, also comprises the space
described in Paragraph 3.2. above and bears the approval marks of the actual functions.
If different types of headlamps comprise the same main body, the latter may bear the
different approval marks.
22.214.171.124. Figure 12 of Annex 2 to this Regulation gives examples of arrangements of approval marks
relating to the above case.
126.96.36.199. A means of controlling the voltage at the terminals of the device, within the limits as defined
in Regulation No. 48, may, for convenience, be located within the body of the headlamp.
However, for the purposes of type approval of the passing and/ or driving beam according to
the provisions of this Regulation, such means of voltage control shall not be considered to
be part of the headlamp and shall be disconnected during the testing to verify performance
according to the requirements of this Regulation.
5.3.2. And/or LED module(s):
188.8.131.52. Electronic light source control gear(s) associated with the operation of LED module(s), if
applicable, shall be considered to be part of the headlamp; they may be part of the LED
184.108.40.206. The headlamp, if equipped with LED modules, and the LED module(s) themselves shall
comply with the relevant requirements specified in Annex 10 of this Regulation. The
compliance with the requirements shall be tested.
220.127.116.11. The total objective luminous flux of all LED modules producing the principal passing-beam
and measured as described in Paragraph 5 of Annex 10 shall be equal or greater than
18.104.22.168. In the case of replaceable LED module the removal and replacement of this LED module, as
described in Annex 10, Paragraph 1.4.1. shall be demonstrated to the satisfaction of the
5.4. Headlamps designed to satisfy the requirements both of right-hand and of left-hand traffic
may be adapted for traffic on a given side of the road either by an appropriate initial setting
when fitted on the vehicle or by selective setting by the user. Such initial or selective setting
may consist, for example, of fixing either the optical unit at a given angle on the vehicle or
the filament lamp or LED module(s) producing the principal passing beam at a given
angle/position in relation to the optical unit. In all cases, only two different and clearly distinct
settings, one for right-hand and one for left-hand traffic, shall be possible, and the design
shall preclude inadvertent shifting from one setting to the other or setting in an intermediate
position. Where two different setting positions are provided for the filament lamp or LED
module(s) producing the principal passing beam, the components for attaching the filament
lamp or LED module(s) producing the principal passing beam to the reflector must be so
designed and made that, in each of its two settings, this filament lamp or LED module(s) will
be held in position with the precision required for headlamps designed for traffic on only one
side of the road. Conformity with the requirements of this paragraph shall be verified by
visual inspection and, where necessary, by a test fitting.
5.5. Complementary tests shall be done according to the requirements of Annex 4 to ensure that
in use there is no excessive change in photometric performance.
5.6. Light transmitting components made of plastic material shall be tested according to the
requirements of Annex 6.
22.214.171.124. Passing beam designed for left-hand traffic and adapted to right-hand traffic:
at least 2,500cd
not more than 880cd
5.9. In case of a passing-beam headlamp incorporating a light source or LED module(s)
producing the principal passing-beam and having a total objective luminous flux which
exceeds 2,000lm a reference shall be made in Item 9 of the communication form in Annex
1. The objective luminous flux of LED modules shall be measured as described in
Paragraph 5 of Annex 10.
5.10. The definitions in Paragraphs 126.96.36.199.3 and 188.8.131.52.7. in Regulation No. 48 allow the use of
LED modules, which may contain holders for other light sources. Notwithstanding this
provision a mixture of LED'(s) and other light sources for the principal dipped beam or the
contributor to the bend lighting or each driving beam, as specified by this Regulation is not
5.11. A LED module shall be:
Only removable from its device with the use of tools, unless it is stated in the
communication sheet that the LED module is non-replaceable, and
So designed that regardless of the use of tool(s), it is not mechanically
interchangeable with any replaceable approved light source.
6.1. General Provisions
6.1.1. Headlamps shall be so made that they give adequate illumination without dazzle when
emitting the passing-beam, and good illumination when emitting the driving-beam. Bend
lighting may be produced by activating one additional filament light source or one or more
LED module(s) being part of the passing-beam headlamp.
6.1.2. The luminous intensity produced by the headlamp shall be measured at 25m distance by
means of a photoelectric cell having a useful area comprised within a square of 65mm side.
The Point HV is the centre-point of the coordinate system with a vertical polar axis. Line h is
the horizontal through HV (see Annex 3 to this Regulation).
6.1.3. Apart from LED module(s), the headlamps shall be checked by means of an uncoloured
standard (étalon) filament lamp designed for a rated voltage of 12V.
184.108.40.206. During the checking of the headlamp, the voltage at the terminals of the filament lamp shall
be regulated so as to obtain the reference luminous flux at 13.2V as indicated for each
filament lamp at the relevant data sheet of Regulation No. 37.
However, if a filament lamp of Category H9 or H9B is used for the principal passing beam,
the applicant may choose the reference luminous flux at 12.2V or 13.2V as indicated in the
relevant data sheet of Regulation No. 37 and a reference stating which voltage was chosen
for type approval shall be made in Item 9 in the communication form of Annex 1.
6.2.2. The headlamp shall be visually aimed by means of the "cut-off" (see Figure 1) as follows:
The aiming shall be carried out using a flat vertical screen set up at a distance of 10m or
25m (as indicated in Item 9 of Annex 1) forward of the headlamp and at right angles to the
H-V axis as shown in Annex 3 to this Regulation. The screen shall be sufficiently wide to
allow examination and adjustment of the "cut-off" of the passing beam over at least 5° on
either side of the V-V Line.
220.127.116.11. For vertical adjustment: the horizontal part of the "cut-off" is moved upward from below
Line B and adjusted to its nominal position one per cent (0.57°) below the H-H Line;
Note: The scales are different for vertical and horizontal lines.
6.2.4. The passing beam shall meet the luminous intensities at the test points referred to in the
tables below and in Annex 3 Figure B (or mirrored about the VV Line for left-hand traffic):
Headlamps for RH Traffic Class A Headlamp Class B Headlamp
Test Point Angular Coordinates –
Max Min Max Min
B50L 0.57U, 3.43L 350 350
BR 1.0U, 2.5R 1,750 1 750
75R 0.57D, 1.15R 5,100 10,100
75L 0.57D, 3.43L 10, 600 10 600
50L 0.86D, 3.43L 13, 200 13,200
50R 0.86D, 1.72R 5,100 10,100
50V 0.86D, 0 5,100
25L 1.72D, 9.0L 1,250 1,700
25R 1.72D, 9.0R 1,250 1,700
Any point in Zone III
(bounded by the following coordinates in degrees)
8L 8L 8R 8R 6R 1.5R V-V
1U 4U 4U 2U 1.5U 1.5U H-H
Any point in Zone IV
(0.86D to 1.72D, 5.15L to 5.15R)
Any point in Zone I
(1.72D to 4D, 9L to 9R)
17, 600 <2I
6.2.8. Only one filament light source or one or more LED module(s) are permitted for the principal
passing beam. Additional light sources or LED modules are permitted only as follows (see
18.104.22.168. One additional light source according to Regulation No. 37 or one or more additional LED
module(s) may be used inside the passing beam headlamp to contribute to bend lighting.
22.214.171.124. One additional light source according to Regulation No. 37 and/or one or more LED
module(s), inside the passing beam headlamp, may be used for the purposes of generating
infrared radiation. It/they shall only be activated at the same time as the principal light
source or LED module(s). In the event that the principal light source or (one of) the principal
LED module(s) fails, this additional light source and/or LED module(s) shall be automatically
126.96.36.199. In the event of failure of an additional filament light source or one or more additional LED
module(s), the headlamp shall continue to fulfil the requirements of the passing beam.
6.3. Provisions Concerning Driving Beams
6.3.1. In the case of a headlamp designed to provide a driving-beam and a passing-beam,
measurements of the luminous intensity of the driving-beam shall be taken with the same
headlamp alignment as for measurements under Paragraphs 6.2.4. to 6.2.6. above; in the
case of a headlamp providing a driving-beam only, it shall be so adjusted that the area of
maximum luminous intensity is centred on the point of intersection of Lines H-H and V-V;
such a headlamp need meet only the requirements referred to in Paragraph 6.3. Where
more than one light source is used to provide the driving-beam, the combined functions
shall be used to determine the maximum value of the luminous intensity (I ).
6.3.2. Irrespective of the type of light source (LED module(s) or filament light source(s)) used to
produce the principal passing beam, several light sources:
Either filament light sources listed in Regulation No. 37; or
LED module(s) may be used for each individual driving beam.
6.3.3. Referring to Annex 3 Figure C and the table below, the luminous intensity distribution of the
driving beam shall meet the following requirements:
Class A Headlamp
Class B Headlamp
Required luminous intensity
Required luminous intensity
C. FURTHER ADMINISTRATIVE PROVISIONS
9. MODIFICATION OF THE HEADLAMP TYPE AND EXTENSION OF APPROVAL
9.1. Every modification of the headlamp type shall be notified to the Type Approval Authority
which approved the headlamp type. The said Authority may then either:
9.1.1. Consider that the modifications made are unlikely to have appreciable adverse effects and
that in any event the headlamp still complies with the requirements; or
9.1.2. Require a further test report from the Technical Service responsible for conducting the tests.
9.2. Confirmation or refusal of approval, specifying the alterations, shall be communicated by the
procedure specified in Paragraph 4.1.4. above to the Parties to the Agreement which apply
9.3. The Competent Authority issuing the extension of approval shall assign a series number to
each communication form drawn up for such an extension and inform thereof the other
Parties to the 1958 Agreement applying this Regulation by means of a communication form
conforming to the model in Annex 1 to this Regulation.
10. CONFORMITY OF PRODUCTION
The conformity of production procedures shall comply with those set out in the Agreement,
Appendix 2 (E/ECE/324-E/ECE/TRANS/505/Rev.2) with the following requirements:
10.1. Headlamps shall be so manufactured as to conform to the type approved under this
The compliance with the requirements set forth in Paragraphs 6. and 7. above shall be
verified as follows:
The minimum requirements for Conformity of Production (CoP) control procedures set fourth
in Annex 5 to this Regulation shall be complied with.
The minimum requirements for sampling by an inspector set forth in Annex 7 to this
Regulation shall be complied with.
10.2. The authority which has granted type approval may at any time verify the conformity control
methods applied in each production facility. The normal frequency of these verifications
shall be once every two years.
10.3. Headlamps with apparent defects are disregarded.
10.4. The reference mark is disregarded.
10.5. The measuring test Points 1 to 8 from Paragraph 6.2.4. of this Regulation are disregarded.
(Maximum format: A4 (210 × 297mm))
Name of administration
Production definitively discontinued
of a type of headlamp pursuant to Regulation No. 112
Approval No. ...................
Trade name or mark of the device: ...............................................................................................
Manufacturer's name for the type of device: ................................................................................
Manufacturer's name and address: ..............................................................................................
If applicable, name and address of the manufacturer's representative: .......................................
Submitted for approval on: ...........................................................................................................
Technical Service responsible for conducting approval tests: .....................................................
Date of report issued by that service: ...........................................................................................
Number of report issued by that service: ......................................................................................
EXAMPLES OF ARRANGEMENT OF APPROVAL MARKS
a ≥ 8mm (on glass)
a ≥ 5mm (on plastic material)
Figure 1 Figure 2
The headlamp bearing one of the above approval marks has been approved in the Netherlands (E4)
pursuant to Regulation No. 112 under Approval Number 243, meeting the requirements of this
Regulation, as amended by the 01 series of amendments. The passing-beam is designed for right-hand
traffic only. The Letters CR (Figure 1) indicate that it concerns a Class A passing and driving-beam and
the Letters HCR (Figure 2) indicate that it concerns a Class B passing and driving-beam.
The Figure 30 indicates that the maximum luminous intensity of the driving-beam is between
123 625 and 145 125 candelas.
Note: The approval number and additional symbols shall be placed close to the circle and either above
or below the Letter 'E', or to the right or left of that letter. The digits of the approval number shall
be on the same side of the Letter 'E' and face in the same direction.
The use of Roman numerals as approval numbers should be avoided so as to prevent any confusion
with other symbols.
Figure 5 Figure 6
The headlamp bearing the above approval mark is a headlamp incorporating a lens of plastic material
meeting the requirements of this Regulation in respect of the passing-beam only and is designed:
Figure 5: Class A for Left-hand Traffic Only.
Figure 6: Class B for both traffic systems.
Figure 7 Figure 8
The headlamp bearing the above approval mark is a headlamp meeting the requirements of this
Figure 7: Class B in respect of the passing-beam only and is Designed for Left-hand Traffic Only.
Figure 8: Class A in respect of the driving-beam only.
(The vertical and horizontal lines schematise the shape of the light-signalling device. They are not part of
the approval mark).
Simplified Marking for Grouped, Combined or Reciprocally Incorporated Lamps
even either of the above-mentioned headlamps approved as a single lamp.
The main body of the headlamp shall bear the only valid approval number, for instance:
The above example corresponds to the marking of a lens of plastic material used in a unit of two
headlamps approved in France (E2) under Approval Number 81151, consisting of:
A headlamp, Class B, emitting a passing-beam and a driving-beam with a maximum luminous intensity
between x and y candelas, meeting the requirements of this Regulation, and
A headlamp, Class B, emitting a driving-beam designed for both traffic systems with a maximum
luminous intensity between w and z candelas, meeting the requirements of this Regulation, the maximum
luminous intensities of the driving-beams as a whole being comprised between 123,625 and 145,125cd.
MD E3 17325
The LED module bearing the light source module identification code shown above has been approved
together with a headlamp initially approved in Italy (E3) under Approval Number 17325.
Passing Beam for Right-hand Traffic
h-h = horizontal plane,
v-v = vertical plane passing through the optical axis of the headlamp
The test point locations for left-hand traffic are mirrored about the VV line.
TESTS FOR STABILITY OF PHOTOMETRIC PERFORMANCE OF HEADLAMPS IN OPERATION
TESTS ON COMPLETE HEADLAMPS
Once the photometric values have been measured according to the prescriptions of this
Regulation, in the point for I for driving beam and in Points 25L, 50R, B50L for
passing-beam (or 25R, 50L, B50R for headlamps designed for left-hand traffic) a complete
headlamp sample shall be tested for stability of photometric performance in operation.
"Complete headlamp" shall be understood to mean the complete lamp itself including those
surrounding body parts and lamps which could influence its thermal dissipation.
The tests shall be carried out:
In a dry and still atmosphere at an ambient temperature of 23°C ± 5°C, the test
sample being mounted on a base representing the correct installation on the vehicle;
In case of replaceable light sources: using mass production filament light sources,
which have been aged for at least 1h, or mass production gas-discharge light
sources, which have been aged for at least 15h or mass production LED modules
which have been aged for at least 48h and cooled down to ambient temperature
before starting the tests as specified in this Regulation. The LED modules supplied by
the applicant shall be used.
The measuring equipment shall be equivalent to that used during headlamp type approval
The test sample shall be operated without being dismounted from or readjusted in relation to
its test fixture. The light source used shall be a light source of the category specified for that
1. TEST FOR STABILITY OF PHOTOMETRIC PERFORMANCE
1.1. Clean Headlamp
The headlamp shall be operated for 12h as described in Paragraph 1.1.1. and checked as
prescribed in Paragraph 1.1.2.
1.1.1. Test Procedure
The headlamp shall be operated for a period according to the specified time, so that:
If the applicant declares that the headlamp is to be used with only the
passing-beam lit or only the driving-beam(s) lit at a time, the test shall be
carried out in accordance with this condition, activating successively the
principal passing-beam half of the time and the driving-beam(s) for half the time
specified in Paragraph 1.1. above, while the front fog lamp is subjected to a
cycle of 15min off and 5min lit for half of the time and during the operation of
If the applicant declares that the headlamp is to be used with only the
passing-beam lit or only the front fog lamp lit at a time, the test shall be
carried out in accordance with this condition, activating successively the
principal passing-beam half of the time and the front fog lamp for half of the
time specified in Paragraph 1.1. above, while the driving-beam(s) is(are)
subjected to a cycle of 15min off and 5min lit for half of the time and during the
operation of the principal passing-beam;
If the applicant declares that the headlamp is to be used with only the
passing-beam lit or only the driving-beam(s) lit or only the front fog lamp lit
at a time, the test shall be carried out in accordance with this condition,
activating successively the principal passing-beam one third of the time, the
driving-beam(s) one third of the time and the front fog lamp for one third of the
time specified in Paragraph 1.1. above.
In the case of a passing-beam designed to provide bend lighting with the addition of a
filament light source and/or one or more LED module(s), this light source and/or LED
module(s) shall be switched on for 1min, and switched off for 9min during the
activation of the passing-beam only (see Annex 4 – Appendix 1).
188.8.131.52. Test Voltage
The voltage shall be applied to the terminals of the test sample as follows:
In case of replaceable filament light source(s) operated directly under vehicle voltage
The test shall be performed at 6.3V, 13.2V or 28.0V as applicable except if the
applicant specifies that the test sample may be used at a different voltage. In this
case, the test shall be carried out with the filament light source operated at the
highest voltage that can be used.
In case of replaceable gas discharge light source(s): The test voltage for the
electronic light source control-gear is 13.2 ± 0.1V for 12V vehicle voltage system, or
otherwise specified in the application for approval.
1.2. Dirty Headlamp
After being tested as specified in Paragraph 1.1. above, the headlamp shall be operated for
1h as described in Paragraph 1.1.1., after being prepared as prescribed in Paragraph 1.2.1.,
and checked as prescribed in Paragraph 1.1.2.
1.2.1. Preparations of the Headlamp
184.108.40.206. Test Mixture
220.127.116.11.1. For headlamp with the outside lens in glass:
The mixture of water and a polluting agent to be applied to the headlamp shall be composed
9 parts by weight of silica sand with a particle size of 0-100µm,
1 part by weight of vegetal carbon dust produced from beech wood with a particle size of
0.2 parts by weight of NaCMC , and
5 parts by weight of sodium chloride (pure at 99%),
An appropriate quantity of distilled water, with a conductivity of ≤1μS/m.
The mixture shall not be more than 14 days old.
18.104.22.168.2. For headlamp with the outside lens in plastic material:
The mixture of water and polluting agent to be applied to the headlamp shall be composed
9 parts by weight of silica sand with a particle size of 0-100µm,
1 part by weight of vegetal carbon dust produced from beech wood with a particle
size of 0-100µm,
(c) 0.2 part by weight of NaCMC ,
(d) 5 parts by weight of sodium chloride (pure at 99%),
13 parts by weight of distilled water with a conductivity of ≤1mS/m,
(f) 2 ± 1 drops of surfactant .
The mixture shall not be more than 14 days old.
2.2. Test Results
2.2.1. The result expressed in milliradians (mrad) shall be considered as acceptable for a
passing-beam headlamp when the absolute value ∆r = │ r - r │ recorded on the headlamp
is not more than 1.0mrad (∆r ≤1.0mrad) upward and not more than 2.0mrad
(∆r ≤2.0mrad) downwards.
2.2.2. However, if this value is:
more than 1.0mrad but not more than 1.5mrad
(1.0mrad < ∆r ≤1.5mrad)
more than 2.0mrad but not more than 3.0mrad
(2.0mrad < ∆r ≤3.0mrad)
a further sample of a headlamp mounted on a test fixture representative of the correct
installation on the vehicle shall be tested as described in Paragraph 2.1. above after being
subjected three consecutive times to the cycle as described below, in order to stabilize the
position of mechanical parts of the headlamp:
Operation of the passing-beam for 1h, (the voltage shall be adjusted as specified in
1h period with the lamp switched off.
After these three cycles, the headlamp type shall be considered as acceptable if the
absolute values ∆r measured according to Paragraph 2.1. above on this further sample
meet the requirements in Paragraph 2.2.1. above.
MINIMUM REQUIREMENTS FOR CONFORMITY OF PRODUCTION CONTROL PROCEDURES
1.1. The conformity requirements shall be considered satisfied from a mechanical and a
geometrical standpoint, if the differences do not exceed inevitable manufacturing deviations
within the requirements of this Regulation. This condition also applies to colour.
1.2. With respect to photometric performances, the conformity of mass-produced headlamps
shall not be contested if, when testing photometric performances of any headlamp chosen
at random and equipped with a standard (étalon) filament lamp and/or LED module(s), as
present in the lamp:
1.2.1. No measured value deviates unfavourably by more than 20% from the value prescribed in
this Regulation. For values B50L (or R) and Zone III, the maximum unfavourable deviation
may be respectively:
1.2.2. Or if
B50L (or R): 170cd equivalent 20%
255cd equivalent 30%
Zone III 255cd equivalent 20%
380cd equivalent 30%
22.214.171.124. For the passing-beam, the values prescribed in this Regulation are met at one point within a
circle of 0.35° around Points B50L (or R) (with a tolerance of 85cd), 75R (or L), 50V, 25R,
25L, and in the entire area of Zone IV which is not more than 0.52° above line 25R and 25L;
126.96.36.199. And if, for the driving beam, HV being situated within the isolux 0.75 I , a tolerance of
+ 20% for maximum values and -20% for minimum values is observed for the photometric
values at any measuring point specified in Paragraph 6.3.2. of this Regulation.
1.2.3. If the results of the test described above do not meet the requirements, the alignment of the
headlamp may be changed, provided that the axis of the beam is not displaced laterally by
more than 1° to the right or left.
1.2.4. If in the case of a lamp equipped with a replaceable filament light source the results of the
tests described above do not meet the requirements, tests shall be repeated using another
standard (étalon) filament lamp.
2.3. Nature of Sampling
Samples of headlamps shall be selected at random from the production of a uniform batch.
A uniform batch means a set of headlamps of the same type, defined according to the
production methods of the manufacturer.
The assessment shall, in general, cover series production from individual factories.
However, a manufacturer may group together records concerning the same type from
several factories provided these operate under the same quality system and quality
2.4. Measured and Recorded Photometric Characteristics
The sampled headlamps shall be subjected to photometric measurements at the points
provided for in the Regulation, the reading being limited at the Points I , HV , HL, HR in
the case of a driving-beam, and to Points B50L (or R), 50L (or R), 50V, 75R (or L) and
25L (or R) in the case of the passing-beam (see Figure in Annex 3).
2.5. Criteria Governing Acceptability
The manufacturer is responsible for carrying out a statistical study of the test results and for
defining, in agreement with the Competent Authority, criteria governing acceptability of his
products in order to meet the specification laid down for verification of conformity of products
in Paragraph 10.1. of this Regulation.
The criteria governing acceptability shall be such that, with a confidence level of 95%, the
minimum probability of passing a spot check in accordance with Annex 7 (first sampling)
would be 0.95.
2.1.2. Photometric Measurements
Photometric measurements shall be carried out on the samples before and after the test.
These measurements shall be made using a standard (étalon) lamp and/or LED module(s),
as present in the headlamp, at the following points:
B50L and 50R for the passing-beam (B50R and 50L in the case of headlamps intended for
I for the driving-beam.
The variation between the photometric values measured on each sample before and after
the test shall not exceed 10% including the tolerances of the photometric procedure.
2.2. Resistance to Atmospheric and Chemical Agents
2.2.1. Resistance to Atmospheric Agents
Three new samples (lenses or samples of material) shall be exposed to radiation from a
source having a spectral energy distribution similar to that of a black body at a temperature
between 5,500K and 6,000K. Appropriate filters shall be placed between the source and the
samples so as to reduce as far as possible radiations with wave lengths smaller than 295nm
and greater than 2,500nm. The samples shall be exposed to an energetic illumination of
1,200 W/m ±200 W/m for a period such that the luminous energy that they receive is equal
to 4,500MJ/m ±200MJ/m . Within the enclosure, the temperature measured on the black
panel placed on a level with the samples shall be 50°C ± 5°C. In order to ensure a regular
exposure, the samples shall revolve around the source of radiation at a speed between 1
and 5 1/min.
The samples shall be sprayed with distilled water of conductivity lower than 1mS/m at a
temperature of 23°C ± 5°C, in accordance with the following cycle:
spraying: 5min; drying: 25min.
2.2.2. Resistance to Chemical Agents
After the test described in Paragraph 2.2.1. above and the measurement described in
Paragraph 188.8.131.52. below have been carried out, the outer face of the said three samples
shall be treated as described in Paragraph 184.108.40.206. with the mixture defined in
Paragraph 220.127.116.11. below.
18.104.22.168. Test Mixture
The test mixture shall be composed of 61.5% n-heptane, 12.5% toluene, 7.5% ethyl
tetrachloride, 12.5% trichloroethylene and 6% xylene (volume %).
2.2.4. Resistance to Light Source Radiations
The following test shall be done:
Flat samples of each light transmitting plastic component of the headlamp are exposed to
the light of the LED module(s). The parameters such as angles and distances of these
samples shall be the same as in the headlamp. These samples shall have the same colour
and surface treatment, if any, as the parts of the headlamp.
After 1,500h of continuous operation, the colorimetric specifications of the transmitted light
must be met, and the surfaces of the samples shall be free of cracks, scratches, scalings or
2.3. Resistance to Detergents and Hydrocarbons
2.3.1. Resistance to Detergents
The outer face of three samples (lenses or samples of material) shall be heated to
50°C ± 5°C and then immersed for 5min in a mixture maintained at 23°C ± 5°C and
composed of 99 parts distilled water containing not more than 0.02% impurities and one part
At the end of the test, the samples shall be dried at 50°C ± 5°C. The surface of the samples
shall be cleaned with a moist cloth.
2.3.2. Resistance to Hydrocarbons
The outer face of these three samples shall then be lightly rubbed for 1min with a cotton
cloth soaked in a mixture composed of 70% n-heptane and 30% toluene (volume %), and
shall then be dried in the open air.
After the above two tests have been performed successively, the mean value of the
variation in transmission
Δ t =
measured on the three samples according to the procedure described in Appendix 2 to this
Annex shall not exceed 0.010 (Δt ≤ 0.010).
2.4. Resistance to Mechanical Deterioration
2.4.1. Mechanical Deterioration Method
The outer face of the three new samples (lenses) shall be subjected to the uniform
mechanical deterioration test by the method described in Appendix 3 to this Annex.
2.6. Tests of the Complete Headlamp Incorporating a Lens of Plastic Material
2.6.1. Resistance to Mechanical Deterioration of the Lens Surface
The lens of lamp Sample No. 1 shall be subjected to the test described in Paragraph 2.4.1.
After the test, the results of photometric measurements carried out on the headlamp in
accordance with this Regulation shall not exceed:
By more than 30% the maximum values prescribed at Points B50L and by more than
10% below the minimum values prescribed at Point 75R (in the case of headlamps
intended for left-hand traffic, the points to be considered are B50R and 75L).
By more than 10% below the minimum values prescribed for HV in the case of a
headlamp producing driving beam only.
2.6.2. Test of Adherence of Coatings, if any
The lens of lamp Sample No. 2 shall be subjected to the test described in Paragraph 2.5.
3. VERIFICATION OF THE CONFORMITY OF PRODUCTION
3.1. With regard to the materials used for the manufacture of lenses, the lamps of a series shall
be recognised as complying with this Regulation if:
3.1.1. After the test for resistance to chemical agents and the test for resistance to detergents and
hydrocarbons, the outer face of the samples exhibits no cracks, chipping or deformation
visible to the naked eye (see Paragraphs 2.2.2, 2.3.1 and 2.3.2. above);
3.1.2. After the test described in Paragraph 22.214.171.124. above, the photometric values at the points of
measurement considered in Paragraph 126.96.36.199. above are within the limits prescribed for
conformity of production by this Regulation.
3.2. If the test results fail to satisfy the requirements, the tests shall be repeated on another
sample of headlamps selected at random.
Tests on complete headlamps (supplied pursuant to Paragraph 2.2.3 of this Regulation)
Deterioration (Paragraph 188.8.131.52)
Photometry (Paragraph 184.108.40.206)
Adherence (Paragraph 2.6.2)
The following readings shall be taken:
part of D
T no no Incident flux in initial reading
Flux transmitted by the new
material in a field of 24°
Flux transmitted by the tested
material in a field of 24°
Flux diffused by the new
Flux diffused by the tested
ANNEX 6 – APPENDIX 4
ADHESIVE TAPE ADHERENCE TEST
This method allows to determine under standard conditions the linear force of adhesion of an
adhesive tape to a glass plate.
Measurement of the force necessary to unstick an adhesive tape from a glass plate at an
angle of 90°.
3. SPECIFIED ATMOSPHERIC CONDITIONS
The ambient conditions shall be at 23°C ± 5°C and 65 ± 15% (RH).
4. TEST PIECES
Before the test, the sample roll of adhesive tape shall be conditioned for 24h in the specified
atmosphere (see Paragraph 3 above).
Five test pieces each 400mm long shall be tested from each roll. These test pieces shall be
taken from the roll after the first three turns were discarded.
The test shall be under the ambient conditions specified in Paragraph 3.
Take the five test pieces while unrolling the tape radially at a speed of approximately
300mm/s, then apply them within 15s in the following manner:
Apply the tape to the glass plate progressively with a slight length-wise rubbing movement of
the finger, without excessive pressure, in such a manner as to leave no air bubble between
the tape and the glass plate.
Leave the assembly in the specified atmospheric conditions for 10min
Unstick about 25mm of the test piece from the plate in a plane perpendicular to the axis of the
Fix the plate and fold back the free end of the tape at 90°. Apply force in such a manner that
the separation line between the tape and the plate is perpendicular to this force and
perpendicular to the plate.
Pull to unstick at a speed of 300mm/s ± 30mm/s and record the force required.
The five values obtained shall be arranged in order and the median value taken as a result of
the measurement. This value shall be expressed in Newtons per centimetre of width of the
1.3. If, however, vertical adjustment cannot be performed repeatedly to the required position within
the tolerances described in Paragraph 220.127.116.11. of this Regulation, one sample shall be tested
according to the procedure described in Paragraphs 2 and 3 of Annex 9.
2. FIRST SAMPLING
In the first sampling four headlamps are selected at random. The first sample of two is
marked A, the second sample of two is marked B.
2.1. The conformity of mass-produced headlamps shall not be contested if the deviation of any
specimen of samples A and B (all four lamps) is not more than 20%.
In the case, that the deviation of both lamps of sample A is not more than 0%, the
measurement can be closed.
2.2. The conformity of mass-produced headlamps shall be contested if the deviation of at least
one specimen of samples A or B is more than 20%.
The manufacturer shall be requested to bring his production in line with the requirements
(alignment) and a repeated sampling according to Paragraph 3. below shall be carried out
within two months' time after the notification. The samples A and B shall be retained by the
Technical Service until the entire CoP process is finished.
3. FIRST REPEATED SAMPLING
A sample of four lamps is selected at random from stock manufactured after alignment.
The first sample of two is marked C, the second sample of two is marked D.
3.1. The conformity of mass-produced headlamps shall not be contested if the deviation of any
specimen of samples C and D (all four lamps) is not more than 20%.
In the case, that the deviation of both lamps of sample C is not more than 0%, the
measurement can be closed.
3.2. The conformity of mass-produced headlamps shall be contested if the deviation of at least:
3.2.1. One specimen of samples C or D is more than 20% but the deviation of all specimen of these
samples is not more than 30%.
The manufacturer shall be requested again to bring his production in line with the
A second repeated sampling according to Paragraph 4. below shall be carried out within two
months' time after the notification. The samples C and D shall be retained by the Technical
Service until the entire CoP process is finished.
3.2.2. One specimen of samples C and D is more than 30%.
In this case the approval shall be withdrawn and Paragraph 5. below shall be applied.
OVERVIEW OF OPERATIONAL PERIODS CONCERNING
TESTS FOR STABILITY OF PHOTOMETRIC PERFORMANCE
Abbreviations: P : passing-beam lamp
driving-beam lamp (D + D means two driving-beams)
front fog lamp
: means a cycle of 15min off and 5min lit.
All following grouped headlamps and front fog lamps together with the added Class B marking symbols
are given as examples and are not exhaustive.
1. P or D or F (HC or HR or B)
2. P+D (HCR) or P+D +D (HCR HR)
3. P+D (HC/R) or P+D +D (HC/R HR)
4. P+F (HC B)
5. P+F (HC B/) or HC/B
6. D+F (HR B) or D +D +F (HR HR B)
7. D+F (HR B/) or D +D +F (HR HR B/)
INSTRUMENTAL VERIFICATION OF THE "CUT-OFF" FOR PASSING-BEAM HEADLAMPS
In the case where Paragraph 18.104.22.168. of this Regulation applies, the quality of the "cut-off" shall
be tested according to the requirements set out in Paragraph 2 below and the instrumental
vertical and horizontal adjustment of the beam shall be performed according to the
requirements set out in Paragraph 3 below.
Before carrying out the measurement of the quality of "cut-off" and the instrumental aiming
procedure, a visual pre-aim in accordance with Paragraphs 22.214.171.124. and 126.96.36.199. of this
Regulation is required.
2. MEASUREMENT OF THE QUALITY OF THE "CUT-OFF"
To determine the minimum sharpness, measurements shall be performed by vertically
scanning through the horizontal part of the "cut-off" in angular steps of 0.05° at either a
measurement distance of:
10m with a detector having a diameter of approximately 10mm or
25m with a detector having a diameter of approximately 30mm.
The measuring distance at which the test was carried out shall be recorded in Item 9 of the
communication form (see Annex 1 of this Regulation).
To determine the maximum sharpness, measurements shall be performed by vertically
scanning through the horizontal part of the "cut-off" in angular steps of 0.05° exclusively at a
measurement distance of 25m and with a detector having a diameter of approximately 30mm.
The "cut-off" quality shall be considered acceptable if the requirements of Paragraph 2.1. to
2.3. below comply with at least one set of measurements.
2.1. Not More than One "cut-off" shall be Visible.
2.2. Sharpness of "cut-off"
The sharpness factor G is determined by scanning vertically through the horizontal part of the
"cut-off" at 2.5° from the V-V where:
G = (log E - log E
) where β = the vertical position in degrees.
The value of G shall not be less than 0.13 (minimum sharpness) and not greater than
0.40 (maximum sharpness).
3.1. Vertical Adjustment
Moving upward from below the Line B (see Figure 2 below), a vertical scan is carried out
through the horizontal part of the "cut-off" at 2.5° from V-V. The inflection point (where
d (log E)/dv = 0) is determined and positioned on the Line B situated 1% below H-H.
3.2. Horizontal Adjustment
The applicant shall specify one of the following horizontal aim methods:
The "0.2D line" method (see Figure 2 below).
A single horizontal line at 0.2°D shall be scanned from 5° left to 5° right after the lamp
has been aimed vertically. The maximum gradient "G" determined using the formula
G = (log E - log E ) where β is the horizontal position in degrees, shall not be less
The inflection point found on the 0.2D line shall be positioned on the Line A.
Note: The scales are different for vertical and horizontal lines.
Instrumental Vertical and Horizontal Adjustment – Horizontal Line Scan Method
REQUIREMENTS FOR LED MODULES AND HEADLAMPS INCLUDING LED MODULES
1. GENERAL SPECIFICATIONS
1.1. Each LED module sample submitted shall conform to the relevant specifications of this
Regulation when tested with the supplied electronic light source control-gear(s), if any.
1.2. LED module(s) shall be so designed as to be and to remain in good working order when in
normal use. They shall moreover exhibit no fault in design or manufacture. A LED module
shall be considered to have failed if any one of its LEDs has failed.
1.3. LED module(s) shall be tamperproof.
1.4. The design of removable LED module(s) shall be such that:
1.4.1. When the LED module is removed and replaced by another module provided by the
applicant and bearing the same light source module identification code, the photometric
specifications of the headlamp shall be met;
1.4.2. LED modules with different light source module identification codes within the same lamp
housing, shall not be interchangeable.
2.1. The LED(s) on the LED module shall be equipped with suitable fixation elements.
2.2. The fixation elements shall be strong and firmly secured to the LED(s) and the LED module.
3. TEST CONDITIONS
3.1.1. All samples shall be tested as specified in Paragraph 4 below.
3.1.2. The kind of light sources on a LED module shall be light-emitting diodes (LED) as defined in
Regulation No. 48 Paragraph 2.7.1. in particular with regard to the element of visible
radiation. Other kinds of light sources are not permitted.
3.2. Operating Conditions
3.2.1. LED Module Operating Conditions
All samples shall be tested under the conditions as specified in Paragraphs 6.1.4. and 6.1.5.
of this Regulation. If not specified differently in this Annex LED modules shall be tested
inside the headlamp as submitted by the manufacturer.
3.2.2. Ambient Temperature
For the measurement of electrical and photometric characteristics, the headlamp shall be
operated in a dry and still atmosphere at an ambient temperature of 23°C ± 5°C.
The UV-radiation of a low-UV-type LED module shall be such that:
( λ) S( λ)
( λ) V( λ)
W / lm
S(λ)(unit: l) is the spectral weighting function;
k = 683lm/W is the maximum value of the luminous efficacy of radiation.
(For definitions of the other symbols see Paragraph 4.1.1. above).
This value shall be calculated using intervals of one nanometer. The UV-radiation shall be
weighted according to the values as indicated in the Table UV below:
Values according to "IRPA/INIRC Guidelines on limits of exposure to ultraviolet radiation"
Wavelengths (in nanometres) chosen are representative; other values should be
λ S(λ) λ S(λ) λ S(λ)
250 0.430 305 0.060 355 0.000 16
255 0.520 310 0.015 360 0.000 13
260 0.650 315 0.003 365 0.000 11
265 0.810 320 0.001 370 0.000 09
270 1.000 325 0.000 50 375 0.000 077
275 0.960 330 0.000 41 380 0.000 064
280 0.880 335 0.000 34 385 0.000 530
285 0.770 340 0.000 28 390 0.000 044
290 0.640 345 0.000 24 395 0.000 036
295 0.540 350 0.000 20 400 0.000 030
5.2. One module of each type shall be submitted by the applicant with the light source control
gear, if applicable, and sufficient instructions.
Suitable thermal management (e.g. heat sink) may be provided, to simulate similar thermal
conditions as in the corresponding headlamp application.
Before the test the LED module shall be aged at least for 72h under the same conditions as
in the corresponding headlamp application.
In the case of use of an integrating sphere, the sphere shall have a minimum diameter of
1m, and at least ten times the maximum dimension of the LED module, whichever is the
largest. The flux measurements can also be performed by integration using a
goniophotometer. The prescriptions in CIE − Publication 84 − 1989, regarding the room
temperature, positioning, etc., shall be taken into consideration.
The LED module shall be burned in for approximately 1h in the closed sphere or
The flux shall be measured after stability has occurred, as explained in Paragraph 188.8.131.52.
of this Annex 10 to this Regulation.