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In recent years, LED semiconductor lighting application products, especially high-power LED products on the demand for increasingly popular, while LED's quality requirements have become more sophisticated, and its mainly in the following areas:
1, the forward voltage test: positive voltage range to be permitted in the circuit design within the scope of many customers design-driven LED lights have a voltage-mode power, forward voltage directly affects the size of the overall parameters of the circuit changes, thereby Product quality will bring hidden dangers. In addition, power dissipation are required for some products, we hope to ensure that the same positive voltage as low as possible under the luminous efficiency.
2, the flux sub-file: LED luminous flux value is an indicator of users are concerned, LED applications customers need to know they are using the LED luminous flux in which the scope of their products so as to ensure uniformity and consistency of brightness.
3, the reverse leakage current test: the reverse leakage current in the load voltage is lower than a certain required value, the production process due to static electricity, caused by such factors as the quality of LED chip leakage current is too high, this will give LED applications Product laid great hidden dangers in the use of a period of time is likely to cause death LED lights.
4, the dominant wavelength sub-file: For the monochromatic LED, the dominant wavelength is a measure of the color parameters of the key indicators, a direct reflection of the human eye dominant wavelength of light on the LED visual experience.
5, color rendering index tranches: the color index of the object directly related to the light shines on the object color level LED lighting products for this parameter is very important.
6, relative to color temperature sub-file: for white LED color temperature is characterized by its color industry is using more than one parameter, this parameter can be directly presented LED colors are warm or cool, or are white.
