Regulation No. 128-00 Proposed Supplement 5

Name:Regulation No. 128-00 Proposed Supplement 5
Description:LED Light Sources for Use in Approved Lamp Units. Proposed Supplement 5 to the 00 Series.
Official Title:Proposal for Supplement 5 to the 00 Series of Amendments to Regulation No.128 (Light Emitting Diode (LED) Light Sources).
Country:ECE - United Nations
Date of Issue:2015-12-23
Amendment Level:Original
Number of Pages:20
Vehicle Types:Agricultural Tractor, Bus, Car, Component, Heavy Truck, Light Truck, Motorcycle, Trailer
Subject Categories:Drafts and Proposals (Historical)
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Keywords:

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Text Extract:

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ECE/TRANS/WP.29/2016/25
PROPOSAL FOR SUPPLEMENT 5 TO THE ORIGINAL SERIES OF
AMENDMENTS TO
REGULATION NO. 128
(LIGHT EMITTING DIODE (LED) LIGHT SOURCES)
ADOPTED AT THE 168 SESSION – MARCH 2016
PROVISIONAL DATE OF ENTRY INTO FORCE: OCTOBER 8, 2016

Categories LR3A, LR3B, LW3A, LW3B, LY3A and LY3B Sheet L3/1
The drawings are intended only to illustrate the essential dimensions of the LED light source.
For the notes see sheet L3/2.
Figure 1
Main Drawing

Categories LR3A, LR3B, LW3A, LW3B, LY3A and LY3B Sheet L3/3
Screen projection requirements
The following test is intended to define the requirements for the apparent light emitting area of the LED
light source and to determine whether the light emitting area is correctly positioned relative to the
reference axis and reference plane in order to check compliance with the requirements.
The position of the light emitting area is checked by the box system defined in Figure 2, which is aligned
to the planes C90 and C180 and shows the projection when viewing along direction γ=0º (C, γ as defined
in Figure 3).
The proportion of the total luminous flux emitted into the viewing direction shall be as described in
Table 3.
Figure 2
Box Definition of the Light Emitting Area with Dimensions as Specified in Table 2
Table 2
Dimensions of the Box System in Figure 2
Dimensions in mm
ƒ
LR3A, LR3B LW3A, LW3B LY3A, LY3B
LED light sources of normal production
3.0
4.5
Standard LED light sources
3.0
4.5

Normalized luminous intensity distribution
Categories LR3A, LR3B, LW3A, LW3B, LY3A and LY3B Sheet L3/5
The following test is intended to determine the normalized luminous intensity distribution of the light
source in an arbitrary plane containing the reference axis. The intersection of the reference axis and the
parallel plane to the reference plane in distance e is used as the coordinate system origin.
The light source is mounted on a flat plate with the corresponding mounting lug features. The plate is
mounted to the goniometer table by a bracket, so that the reference axis of the light source lines up with
one of the rotating axis of the goniometer. The corresponding measurement set-up is described in
Figure 3.
Luminous intensity data is recorded with a standard photo-goniometer. The measurement distance
should be chosen appropriately, to make sure that the detector is located in the far field of the light
distribution.
The measurements shall be performed in C-planes C (C ) and C (C ), which contain the reference
axis of the light source. The test points for each plane for multiple polar angles γ are specified in Tables
4a and 4b.
The measured luminous intensity values, normalised to the measured luminous flux of the individual light
source under test, shall be converted to normalised luminous intensity values of a 1,000lm light source.
The data shall comply with the tolerance band as defined in Tables 4a and 4b.

Categories LR3A, LR3B, LW3A, LW3B, LY3A and LY3B Sheet L3/6
The light pattern as described in Tables 4a and 4b shall be substantially uniform, i.e. in between two
adjacent grid points the relative luminous intensity requirement is calculated by linear interpolation using
the two adjacent grid points. In case of doubt this may be checked in addition to verification of the grid
points given in Tables 4a and 4b.
Table 4a
Test Point Values of Normalized Intensities for Categories LR3A and LR3B
LED light sources of normal production
Standard LED light sources
Angle γ
Minimum Intensity in
cd/1,000lm
Maximum Intensity in
cd/1,000lm
Minimum Intensity in
cd /1,000lm
Maximum Intensity in
cd/1,000lm
-90°

Categories LR4A and LR4B
Sheet LR4/1
The drawings are intended only to illustrate the essential dimensions of the LED light source.
For the notes see Sheet LR4/2.
Figure 1
Main Drawing

Categories LR4A and LR4B
Sheet LR4/4 (Cont'd)
Figure 3
Set-up to Measure the Luminous Intensity Distribution

Categories LR5A, LR5B, LW5A, LW5B, LY5A, LY5B Sheet L5/2
Table 1
Essential Dimensional, Electrical and Photometric Characteristics of the LED Light Source
.
Electrical characteristics
In case of LED light source failure (no light emitted) the max. electrical current draw, when operated
between 12V and 14V, shall be less than 20mA (open circuit condition).

Categories LR5A, LR5B, LW5A, LW5B, LY5A, LY5B Sheet L5/4
Table 3
Proportion of the Total Luminous Flux Emitted into the Viewing Direction from the Areas
Specified in Figure 2
Category
Area(s)
LED light sources of normal
production
Standard LED light sources
Each B individually ≥10% ≥15%
LR5A
LR5B
LW5A
LW5B
LY5A
LY5B
Each A, B individually
<40%
<30%
All B together
≥60%
≥65%
Each C individually
-
<10%
All A, B and C together
≥90%
≥90%
Each A,B individually
≥6%
≥8%
Each A, B individually
<40%
<30%
All A, B together
≥55%
≥60%
Each C individually
<15%
<10%
All A, B and C together
≥90%
≥90%

Categories LR5A, LR5B, LW5A, LW5B, LY5A, LY5B
Sheet L5/5 (Cont'd)
The drawings are intended only to illustrate the essential set-up for measurement of the LED light
source.
Figure 3
Set-up to Measure the Luminous Intensity Distribution

LED Light Sources for Use in Approved Lamp Units. Proposed Supplement 5 to the 00 Series.