Released recently, the international commission on illumination (CIE) international standard CIES025:2015 \"LED lights, lamps and lanterns and module test method\", this is the first test method for LED products of international standards, or will be referred to as the industry's most influential test standard. The standard project was first put forward by professor distance photoelectric jian-gen pan in our country, the case in national lighting appliances standardization committee-nanyang optical radiation measurement under the organization of our country also established the corresponding standard working group, on the one hand to the international standard proposed many opinions in China, on the other hand also into our standard for the technology.
CIES025 consists of CIE division 2 technical committee be responsible for the formulation of TC2-71, at the beginning of the project was the standard, CIE and European standardization technical committee (CEN) signed an agreement, the standard will be posted as a European standard (EN). According to the process of CIE, the standard will soon by the international organization for standardization (ISO) into a formal ISO standards. In addition, the international electrotechnical commission (IEC) and CIE also reached out to the IEC will not into this standard, but will be in direct reference to related contents are concerned.
Light chromaticity parameters of LED products for accurate and reliable measurement is to evaluate product performance and design the basic requirement of the lighting system, namely must ensure that the measured data consistency in the different lab, in order to achieve the comparison of different products under the same benchmark. It is based on this idea, CIES025 on LED lights, lamps and lanterns and module proposed materials with high luminosity and chroma test requirements, and related test data report. Measuring parameters include total luminous flux, luminous efficacy, part of the luminous flux, luminous intensity distribution, intensity, color, brightness, brightness distribution center coordinates, correlated color temperature, color rendering index, and the role of uniformity.
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