The need to develop lighting LED standards
LED lighting fixtures consist of LED light sources, electrical accessories and appliances. It uses semiconductor light-emitting device as the light source, has the characteristics of small size, long life, low energy consumption, instant start, rich color, etc. It is an environmentally friendly and energy-saving cold light source.
In recent years, developed countries and government organizations in the United States, Japan, and Europe have invested a large amount of human and material resources in the development and research of LED lighting, which has greatly improved the technical level of LED light sources, and the power has reached 3 to 5W. The luminous efficiency reaches 301m/w, making it possible to use LED light sources for general illumination.
LED products will become the latest energy-saving lighting products. However, LED lighting equipment is a high-tech, high value-added product. In China, the research on LED lighting is still very weak, which is very different from the foreign level. Especially in the application of basic research, it can not meet the needs of China's industrial development.
In the LED lighting product testing technology and product standards, it is far from being able to meet the requirements of the development of China's LED lighting industry. The development of LED lighting in China should first establish and improve the technical standards and test method evaluation system of LED lighting equipment in China, and standardize the existing testing system so that the products of different enterprises can be tested according to the unified testing method. Only in this way can we truly understand China's LEDs. The technical level of lighting products will further promote the technological progress of China's LED lighting industry and promote the development of the industry.
The establishment of technical standards and test methods for LED lighting equipment will also promote the advancement of semiconductor technology, improve the production and quality of LED lighting products, and shorten the gap between China and the international level. It has extremely important practical significance and far-reaching historical significance. Will produce huge economic and social benefits.
Status of Lighting LED Standards and Inspection Technologies The International Commission on Illumination (CIE) and the International Electrotechnical Commission (IEC) do not have standards for lighting LEDs.
In the 1990s alone, CIE published a technical report on general LED test methods. However, due to the rapid development of LED products in recent years, many of the technical features of LEDs discovered today have not been considered in the past. Therefore, at the IEC annual meeting held in Kyoto, Japan in 1999, representatives from developed countries proposed to develop white LED lighting standards by ICETC34 (Lighting Technical Committee). The Japanese delegation also submitted two draft standards for white LEDs for general lighting. . In order to develop lighting LEDs, developed countries attach great importance to the research of LED test methods and standards. For example, the National Institute of Standards and Testing (NIST) is a world-renowned testing and research organization. Currently, they organize internationally renowned test experts to conduct LED test research, focusing on test methods such as LED luminescence characteristics, temperature characteristics and light fading characteristics, in an attempt to establish a complete set. LED test methods and technical standards have been at the forefront of the world in LED testing. Japan established the "White Light LED Test Research Committee" to study the test methods and technical standards for white LEDs for lighting. In order to seize the commanding heights of LED research, the developed countries in the world have invested a lot of manpower and resources in LED standards and testing, focusing on the selection of LED characteristic parameters and test methods in terms of standards. There is no LED lighting fixture standard in China, and there is no corresponding LED lighting detection system. Some companies have purchased some testing equipment. However, due to the lack of professional research, the detection level is low, the instrument matching is poor, the detection accuracy is low, and it is incomparable with each other, and the test items cannot meet the needs. Although China's professional testing institutions have also carried out some research work on LED testing, due to limited conditions, it is still unable to form a complete testing and evaluation system, and its level is still far from the developed countries.
At present, China's relevant testing departments have begun to carry out research on lighting LED test methods, including the development of testing equipment. The National Lighting Appliance Standardization Technical Committee has included the technical standards and test method standards for lighting LEDs in the standard work plan for 2004. It is hoped that the development of LED technology and the application in the field of lighting will be promoted through the development of lighting LED standards.
Problem to be solved
Lighting LED technology standards focus on solving product characteristics and test methods. The most important performance indicators of LEDs are optical and electrical properties. Optical properties include luminous flux, light distribution, brightness, spectral distribution, chromaticity coordinates, color rendering index, and the like.
LED is applied to lighting fixtures. It has similar commonalities of general light source and speciality of its products: LED is a kind of directional light-emitting device; illuminant is small, it can approximate point light source; light is affected by environment and processing The process has a large impact.
The measurement cycle of LED light decay characteristics is very long (tens of thousands or even tens of thousands of hours). In addition to optical performance, LEDs also have characteristics of electrical accessories (including energy-saving electrical accessories), mechanical properties, temperature characteristics, and appliance safety characteristics.
Therefore, we must focus on the test method in the standard development process.
LED lighting fixtures consist of LED light sources, electrical accessories and appliances. It uses semiconductor light-emitting device as the light source, has the characteristics of small size, long life, low energy consumption, instant start, rich color, etc. It is an environmentally friendly and energy-saving cold light source.
In recent years, developed countries and government organizations in the United States, Japan, and Europe have invested a large amount of human and material resources in the development and research of LED lighting, which has greatly improved the technical level of LED light sources, and the power has reached 3 to 5W. The luminous efficiency reaches 301m/w, making it possible to use LED light sources for general illumination.
LED products will become the latest energy-saving lighting products. However, LED lighting equipment is a high-tech, high value-added product. In China, the research on LED lighting is still very weak, which is very different from the foreign level. Especially in the application of basic research, it can not meet the needs of China's industrial development.
In the LED lighting product testing technology and product standards, it is far from being able to meet the requirements of the development of China's LED lighting industry. The development of LED lighting in China should first establish and improve the technical standards and test method evaluation system of LED lighting equipment in China, and standardize the existing testing system so that the products of different enterprises can be tested according to the unified testing method. Only in this way can we truly understand China's LEDs. The technical level of lighting products will further promote the technological progress of China's LED lighting industry and promote the development of the industry.
The establishment of technical standards and test methods for LED lighting equipment will also promote the advancement of semiconductor technology, improve the production and quality of LED lighting products, and shorten the gap between China and the international level. It has extremely important practical significance and far-reaching historical significance. Will produce huge economic and social benefits.
Status of Lighting LED Standards and Inspection Technologies The International Commission on Illumination (CIE) and the International Electrotechnical Commission (IEC) do not have standards for lighting LEDs.
In the 1990s alone, CIE published a technical report on general LED test methods. However, due to the rapid development of LED products in recent years, many of the technical features of LEDs discovered today have not been considered in the past. Therefore, at the IEC annual meeting held in Kyoto, Japan in 1999, representatives from developed countries proposed to develop white LED lighting standards by ICETC34 (Lighting Technical Committee). The Japanese delegation also submitted two draft standards for white LEDs for general lighting. . In order to develop lighting LEDs, developed countries attach great importance to the research of LED test methods and standards. For example, the National Institute of Standards and Testing (NIST) is a world-renowned testing and research organization. Currently, they organize internationally renowned test experts to conduct LED test research, focusing on test methods such as LED luminescence characteristics, temperature characteristics and light fading characteristics, in an attempt to establish a complete set. LED test methods and technical standards have been at the forefront of the world in LED testing. Japan established the "White Light LED Test Research Committee" to study the test methods and technical standards for white LEDs for lighting. In order to seize the commanding heights of LED research, the developed countries in the world have invested a lot of manpower and resources in LED standards and testing, focusing on the selection of LED characteristic parameters and test methods in terms of standards. There is no LED lighting fixture standard in China, and there is no corresponding LED lighting detection system. Some companies have purchased some testing equipment. However, due to the lack of professional research, the detection level is low, the instrument matching is poor, the detection accuracy is low, and it is incomparable with each other, and the test items cannot meet the needs. Although China's professional testing institutions have also carried out some research work on LED testing, due to limited conditions, it is still unable to form a complete testing and evaluation system, and its level is still far from the developed countries.
At present, China's relevant testing departments have begun to carry out research on lighting LED test methods, including the development of testing equipment. The National Lighting Appliance Standardization Technical Committee has included the technical standards and test method standards for lighting LEDs in the standard work plan for 2004. It is hoped that the development of LED technology and the application in the field of lighting will be promoted through the development of lighting LED standards.
Problem to be solved
Lighting LED technology standards focus on solving product characteristics and test methods. The most important performance indicators of LEDs are optical and electrical properties. Optical properties include luminous flux, light distribution, brightness, spectral distribution, chromaticity coordinates, color rendering index, and the like.
LED is applied to lighting fixtures. It has similar commonalities of general light source and speciality of its products: LED is a kind of directional light-emitting device; illuminant is small, it can approximate point light source; light is affected by environment and processing The process has a large impact.
The measurement cycle of LED light decay characteristics is very long (tens of thousands or even tens of thousands of hours). In addition to optical performance, LEDs also have characteristics of electrical accessories (including energy-saving electrical accessories), mechanical properties, temperature characteristics, and appliance safety characteristics.
Therefore, we must focus on the test method in the standard development process.
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