LED technology standard and test method

Establish standard of LED lighting LED lighting appliances necessary consists of LED light source, electrical accessories and equipment. It USES the semiconductor light-emitting devices as light source, has small volume, long service life, low energy consumption and instantaneous startup, color is rich, cold light source is a kind of environmental protection and energy saving. In recent years, the United States, Japan, and Europe and other developed countries and the government organization in LED invest a lot of manpower and material resources organization development and research, the LED light source technology has improved greatly, has reached 3 ~ 5 w, luminous efficiency reached 301 m/w, the LED light source to be used for general illumination. LED products will become the latest energy-saving lighting products. But LED lighting appliance is a high technology, high value-added products, in the past the study of LED lighting in China is still very weak, and foreign levels vary widely, especially in the aspect of applied basic research also cannot meet the needs of industry development in our country. In LED lighting product testing technology and product standards far can not adapt to the requirements of the LED lighting industry development in our country. The development of LED lighting in China, first should establish and improve China's LED lighting appliance technology standard and test method of evaluation system, regulate the existing test system, make products of different enterprises according to the unified test method of detection, only in this way can truly understand the technical level of LED lighting products in our country, thus promote the technological progress of LED lighting industry in China, promote the development of industry. LED lighting appliance the establishment of technical standards and testing methods, also will promote the progress of semiconductor technology, the improvement of production and quality of LED lighting products, shorten the gap between our country and international level, has extremely important realistic significance and far-reaching historical significance, will produce a great economic and social benefits. LED lighting standards and detecting technology status of the international commission on illumination ( ＣＩＥ） And the international electrotechnical commission ( ＩＥＣ） About the standards of LED lighting. Only in the 1990 s, CIE has made a general technical report of LED test method. But the LED products technology is developing rapidly in recent years, now LED many technical features are found in the past have not considered. Therefore, in 1999 the IEC annual meeting held in Kyoto, Japan, the representative of the developed countries proposed by ICETC34 ( Lighting technology committee) Standards for white LED lighting equipment, the Japanese delegation also presented the general lighting two draft standard of white LED. In order to develop LED lighting, developed countries attaches great importance to the research of LED test methods and standards. Such as the national standard testing institute ( ＮＩＳＴ） Is a world famous test research institution, at present they organize international testing experts conduct LED test research, focus on studying the characteristics of LED, the temperature characteristic and failure characteristics testing methods, trying to establish a complete set of the LED test methods and technical standards, in terms of the LED test has been walking in the forefront of the world. Japan set up the 'white LED test research committee', specializes in lighting white LED test methods and technical standards. The developed countries in the world in order to take the high ground of the study, LED in LED standards and testing have invested a lot of manpower material resources, in terms of standard pay attention to choose LED characteristic parameters and test method research. In our country at present the standard LED lighting appliances, also do not have the corresponding LED lighting system. Some enterprise by purchasing part of the testing equipment. But due to lack of professional research, and low level of testing instrument compatibility is poor, low detection precision, an alignment between each other, the test project can't meet the need. Professional testing institution in our country although has carried out some of the LED test research work, but due to the limitation of conditions, still cannot form a complete test evaluation system, the level and the developed countries there is still a large gap. At present, the relevant detection department has embarked on lighting LED test method research, including the development of the testing equipment. National lighting appliances standardization technology committee has a LED lighting technology standard and test method standards included in the standard of 2004 work plan, hope that through lighting LED standards, promote the development of LED technology and the application in the field of lighting. To solve the problem of lighting, LED technology standard products to solve the problem of the characteristics and test methods of, LED one of the most important performance index is the optical and electrical properties. Optical properties including light flux, light distribution and intensity, spectral distribution and chromaticity coordinates, color rendering index, etc. LED used in lighting fixtures, both on the optical generally similar common light source, the particularity of its products: LED to a direction of the light-emitting device; Light is very small, can approximate point light source; Luminescence are greatly influenced by environment and processing technology. LED droop characteristic measurement cycle is very long, Tens of thousands or even tens of thousands of hours) 。 LED in lighting use besides involving optical properties, and the characteristics of the electrical accessory ( Including energy-efficient appliances accessories) Instruments, mechanical properties, temperature characteristic and security features, etc. Therefore in the process of establishing a standard test method to considered problem