GB/T 30511-2014 PDF in English
GB/T 30511-2014 (GB/T30511-2014, GBT 30511-2014, GBT30511-2014)
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Photometric characteristics of cornering lamps for motor vehicle
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GB/T 30511-2014: PDF in English (GBT 30511-2014) GB/T 30511-2014
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.20
T 38
Photometric Characteristics
of Cornering Lamps for Motor Vehicle
ISSUED ON: FEBRUARY 19, 2014
IMPLEMENTED ON: JUNE 01, 2014
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 4
4 Requirements ... 5
5 Test Method ... 7
6 Inspection Rules ... 9
Appendix A (Normative) Installation Rules of Cornering Lamp for Motor
Vehicle ... 11
Photometric Characteristics
of Cornering Lamps for Motor Vehicle
1 Scope
This Standard specifies the technical requirements, test methods and inspection rules,
etc. of photometric characteristics of cornering lamps for motor vehicle (hereinafter
referred to as cornering lamp).
This Standard is applicable to various kinds of cornering lamps for Type-M and Type-
N motor vehicles.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB 4599 Motor Vehicle Headlamps Equipped with Filament Lamps
GB 4785-2007 Prescription for Installation of the External Lighting and Light-
Signaling Devices for Motor Vehicles and Their Trailers
GB 15766.1 Lamps for Road Vehicles. Dimensional Electrical and Luminous
Requirements
ECE R37 Uniform Provisions Concerning the Approval of Filament Lamps for Use
in Approved Lamp Units of Power-Driven Vehicles and of Their Trailers
3 Terms and Definitions
For the purpose of this document, the terms and definitions given in GB 4785 and the
following apply.
3.1 Cornering lamp
A lamp that provides auxiliary illumination at the corner of the road ahead where the
vehicle is about to turn.
Separately measure the luminous intensity after lighting for 1min and 30min; the results
shall conform to the provisions of 4.2; the luminous intensity of each point after lighting
for 1min shall be obtained by MULTIPLYING the ratio of luminous intensities on HV
point after lighting for 1min and 30 min BY measurement result of luminous intensity
of each point after lighting for 30min.
5.2.4 Measurement of cornering lamp equipped with several light sources
5.2.4.1 Where mass-produced 6.75V, 13.5V or 28.0V replaceable filament bulbs are
used, mass-produced bulbs shall be used for measurement; the resulting luminous
intensity shall be corrected. The correction factor is the ratio of reference luminous flux
and the average value of luminous flux at the test voltage (6.75V, 13.5V or 28.0V). The
actual luminous flux of each used filament bulb shall deviate from tis average value by
no more than ±5%; or in the position of each bulb, use the standard bulb working under
the reference luminous flux to measure one by one; the individual measurement results
at each position are summed.
5.2.4.2 Where non-replaceable light source or other light sources are used, measure
at the voltage specified by the manufacturer; if necessary, the manufacturer shall
provide the special power supply unit.
5.2.5 Conditions before the photometric characteristics test
Ignite the devices or bulbs equipped with non-replaceable light source at the voltage
during the test; so that its optical performance becomes stable.
5.2.6 Distance of photometric characteristics test
It shall conform to the inverse square law of distance in optics.
5.2.7 Flare angle of the light receiver
Viewed from the reference center of the cornering lamp, the flare angle of the light
receiver is in range of 10’~1°.
5.2.8 Angle deviation
The angle deviation in each measurement direction shall be no greater than 15’.
5.2.9 Measurement basis
The measurement of the measured angle shall be based on the reference axis and
reference center (indicated by the manufacturer on the drawing).
5.3 Chromaticity measurement
Light Source A (color temperature is 2856K) shall be used. For the cornering lamp
using the non-replaceable light source, it shall be tested under the test conditions
specified in 5.2.1.
6 Inspection Rules
6.1 Different types of cornering lamps
The different types of the cornering lamps refer to the cornering lamps that differ in the
following main aspects:
a) Trademark name or trademark;
b) Characteristics of optical system (luminous intensity, geometric visibility, types of
the used filament bulb or light source module, etc.);
c) Category of the cornering lamp (the components that form the reflection,
refraction or absorption to change the optical effect).
However, changes in the color of filament bulb or color of filter do not affect the variation
of the types.
6.2 Type inspection
6.2.1 The judgment of different types of cornering lamps shall be as stipulated in 6.1.
6.2.2 The manufacturer shall provide:
a) The drawing sufficient to identify the characteristics of the cornering lamp of such
type in triplicate; including the detailed characteristic structure of the lens; and
indicating the reference axis (H=0°, V=0°), reference center and geometric
position mounted on the vehicle; and a brief technical specification for the
material of the cornering lamp optical unit;
b) 2 cornering lamps (device equipped with replaceable filament bulb, including the
filament bulb).
6.2.3 Each cornering lamp shall conform to the provisions of 4.1.
6.2.4 Test as stipulate din Clause 5; each sample lamp shall conform to the
corresponding provisions of 4.2 and 4.3.
6.3 Production consistency inspection
6.3.1 For the cornering lamp that passes through the type inspection, randomly take
cornering lamp samples from the batch products to determine its consistency of
production.
Appendix A
(Normative)
Installation Rules of Cornering Lamp for Motor Vehicle
A.1 Equipment
Optional for vehicle.
A.2 Quantity
It shall install 2 pieces.
A.3 Layout
No special requirements.
A.4 Installation position
A.4.1 Transverse: In the direction of the reference axis, the distance FROM the point
on the viewing surface farthest from the longitudinal symmetry plane of the vehicle TO
the end face of the outer edge of the vehicle shall not exceed 400mm.
A.4.2 Longitudinal: no more than 1000mm from the front.
A.4.3 Height:
Minimum value: the height from the ground is no less than 250mm;
Maximum value: the height from the ground is no greater than 900mm.
However, in the direction of the reference axis, the entire viewing surface shall be
below the highest point on the viewing surface of dipped headlights.
A.5 Geometric visibility
See Figure 2, it shall be measured by α and β defined in 3.10 of GB 4785-2007.
--- Angle α: 10° up and down;
--- Angle β: 30°~60° outward.
A.6 Direction
It shall meet the requirements for geometric visibility.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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