CIE 127-1997 LED测试方法（英文版）.pdf

rJj L f ISBN 3 900 734 84 4 COMMISSION INTERNATIONALE DE L'éCLAIRAGE MISSION ON ILLUMINATION INTERNATIONALE BELEUCHTUNGSKOMMISSION MEASUREMENT of LEDs CIE 127 - 1997 UDC: Descriptors: Light sources, indicating devices Photometry Light-emitting elements STD-CIE L27-ENGL 1777 = 900bLLI5 000587'4 b74 THE INTERNATIONAL COMMISSION ON ILLUMINATION The International Commission on Illumination (CIE) is an organisation devoted to international co-operation and exchange of infomation among its member countries on all matters relating to the art and science of lighting. Its membership consists of the National Committees in 40 countries and one geographical area and of 12 individual members. The objectives of the CIE are : 1. To provide an international forum for the discussion of all matters relating to the science, technology and art in the fields of light and lighting and for the interchange of information in these fields between countries. 2. To develop basic standards and procedures of metrology in the fields of light and lighting. 3. To provide guidance in the application of principles and procedures in the development of international and national standards in the fields of light and lighting. 4. To prepare and publish standards, reports and other publications concerned with all matters relating to the science, technology and art in the fields of light and lighting. 5. To maintain liaison and technical interaction with other anisations concerned with matters related to the science, technology, standardisation and art in the fields of light and lighting. The work of the CIE is carried on by seven Divisions each with about 20 mittees. This work covers subjects ranging from fundamental matters to all types of lighting applications. The standards and