Comparison of evaluation methods of LED downlight

Introduction: LED is a new light source lighting industry, is still in the stage of technological development, the characteristics of LED light source stability, various technical indicators have not formed a mature technology, has not formed the standardized products, including the LED source power, specifications, light intensity, light efficiency, input parameters of electric current and voltage of the uncertainty brought the measurement of instability to the lamps using LED light source.

The characteristics of the light LED downlight and use the traditional light source has a significant difference. The traditional light source, such as fluorescent lamp, gas discharge lamp as light source, basically is the production of mature technology, product specifications have been relatively complete products, the indicators of the light source are already standardized, so for the lamp using the traditional light source, power measurement and evaluation is relatively easy, in the lighting product standards, type you can measure only a lamp test.

Comparison of evaluation methods of LED downlight

LED is a new light source lighting industry, is still in the stage of technological development, the characteristics of LED light source stability, various technical indicators have not formed a mature technology, has not formed the standardized products, specifications, power, light intensity, light efficiency, input current and voltage and other parameters including LED light source of uncertainty brought measurement the stability of lamp using LED light source. Therefore, using a method of measurement for evaluation of the traditional lamp sample was not suitable for LED downlight.

China has already made a lot of local standards and technical specifications, including two specification with a wide range, is a semiconductor lighting products technical requirements jointly issued the August 2010 national development and Reform Commission, the Ministry of housing and urban construction, the Ministry of transport three ministries "(2010 Edition)" (hereinafter referred to as technical requirements). The other is a standard LED lamp energy-saving certification issued by CQC in December 2010 (hereinafter referred to as the CQC specification). In the past, all the standardization organizations in the world are studying the performance evaluation methods of LED lamps. IEC/TC34D standard draft IEC/PAS62722-2-1 (ED1.0) LED lamp performance in the draft standard introduces the evaluation methods of statistics and maintain working group held in June 2011 in the IEC/TC34D standard LUMAX technology conference, many experts also proposed the concept of mean values instead of statistics.