Standard No.:	GB 25991-2010
English Name:	Automotive headlamps with LED light sources and/or LED modules
Chinese Name:	汽车用LED前照灯
Chinese Classification:	T38    Lighting and signaling equipment
Professional Classification:	GB    National Standard
ICS Classification:	43.040.20 43.040.20    Lighting, signalling and warning devices 43.040.20
Issued by:	AQSIQ; SAC
Issued on:	2012-1-1
Implemented on:	2012-1-1
Status:	superseded
Superseded by:	GB 4599-2024 Road illumination devices and systems for motor vehicles
Superseded on:	2025-7-1
Language:	English
File Format:	PDF
Word Count:	8000 words
Price(USD):	80.0
Delivery:	via email in 1 business day

This Standard specifies the test methods and inspection rules for the photometric characteristics, light colours and temperature cycling of motor vehicle headlamps equipped with LED light source(s)/module(s) or headlamps containing LED light source(s)/modules. This Standard applies to LED headlamps of type M and N motor vehicles, or LED headlamps emitting passing beams or driving beams by LED light source(s) or LED module(s).

Foreword I 1 Scope 2 Normative References 3 Terminologies and Definitions 4 Different Types of Headlamps 5 Requirements 6 Test Methods 7 Inspection Rules Appendix A (Normative) Stability Tests for the Photometric Characteristics of LED Headlamps Appendix B (Normative) Stability Tests for Illuminance, Chromaticity and Temperature of LED Headlamps Appendix C (Normative) Temperature-resistance Cycling Test of LED Headlamps