China is marching toward a powerful LED detection technology

Semiconductor lighting is the key support industry in China during the 11th and 5th. In recent years, national and local support for technical R&D and demonstration projects has increased, and a series of industrial support policies have been introduced. Through the application of pilot projects, LED lighting products have been promoted. These measures have effectively brought about the technological progress of China's LED industry. In the past ten years, the development of LED technology and industry in China has kept pace with international development, and remarkable achievements have been made in downstream packaging and manufacturing of application products.

International standards organizations have successively issued relevant standards. The International Electrotechnical Commission IEC has a number of technical committees involved in the international standardization of LED products; the International Commission on Illumination CIE is also very concerned with LED international standardization research, and in particular plays an important role in promoting the future standardization of semiconductor lighting. With the development of LED technology and industry, China's international right to speak in the field of LED has improved significantly. China has been tracking and participating in actively leading international standards and has made China's LED status in the international standardization field ever-increasing. At the same time, the standardization work of China's LED products has also achieved good results, which has strongly promoted the rapid and healthy development of the industry.

In the field of detection and evaluation of LED lighting products, China's self-developed detection technology and testing equipment are also attracting attention and have gradually become one of the strong countries.

In the LED detection technology, due to the characteristics of LED products and traditional light sources are quite different, LED light and junction temperature are closely related, in the LED products of optical and optoelectronic parameter testing, ambient temperature, heat sink or shell temperature Changes will change the LED junction temperature changes. In the luminosity test of LED luminaires, the light emitting device is often inseparable from the luminaire housing and needs to be integrally tested. Therefore, an absolute photometric measurement method is generally used. Some high-brightness LED's blue light will cause photochemical damage to the human eye's retina. According to IEC62471 "Light bio-safety of lamp and lamp system" series of standards, the photochemical damage test of LED products is also one of the hot spots in the industry. In addition, LED products have long-life characteristics, we can not be like long-term lighting test of ordinary lighting products, we must use a certain speed test method to predict the useful life of LED products.

In response to the above-mentioned international focus on hotspot testing technology, China has made significant progress in semiconductor lighting inspection technology and equipment, and it is increasingly in an international position. Especially in the development of LED inspection technology standards, China is in some key international standards. The dominant position has been affirmed. China has independently developed a series of optical testing equipment, involving optical and energy efficiency detection of LED products, detection of spatial light distribution of LED lamps and luminaires, safety and detection of light bio-irradiation of LED products, accelerated LED life testing, and phosphors, Online testing, etc. At present, China's independent research and development of semiconductor lighting testing equipment to meet the needs of the domestic laboratory testing, and some of the testing equipment exported to internationally renowned laboratories. For example, Hangzhou Zheda Tricolor Instrument Co., Ltd. has developed the LED constant temperature photometric integrating sphere for the National Institute of Standards and Technology (NIST), which has become an important detection device for the US and even international LED standard research. Many international experts have visited the NIST in the United States to conduct guest research and use the device to perform related optical test tests for LEDs. Internationally, important research results have been released.

Since the 16th National Congress, China's semiconductor lighting industry has made considerable progress. In the international standardization process, China has adopted the international equivalent of early tracking. It has actively participated in the formulation of international standards since the beginning of this century. It has begun to dominate a number of important international standards today. China’s discourse power in the international standards for semiconductor lighting is also increasing. In the future, international trade will have a significant impact. In this decade, China has made great progress and development in semi-conductor lighting inspection technology and equipment. Its position in the international community has gradually increased, and it has even achieved dominance in certain key international standards. The LED's potential and advantages continue to develop. In the next five to fifteen years, LED lighting will enter the era of humanized lighting from traditional alternative lighting. The industry should pay attention to the trends of international standards and meet new industry development opportunities and challenges. Our country truly realizes the transition from a manufacturing power to an industrial power.