Common LED light source spectral separation technology

Nowadays, with the LED application products, especially high-power LED semiconductor lighting products surge in demand for LED quality requirements are also increasing:


Flux binning

Luminous flux value is an indicator LED users are concerned, LED applications customers need to know they are using LED luminous flux in which the range of their products so as to ensure uniformity of brightness and consistency.

Reverse leakage current test

Reverse leakage current in a certain voltage under load is lower than the value required in the production process due to static electricity, caused by factors such LED chip quality reverse leakage current is too high, this will give LED application products laid great risk, after a period of use is likely to cause death of LED lights.

Forward voltage test

Range of forward voltage shall be within the permissible range of circuit design, many customers are designed to drive LEDs light the way power voltage, the forward voltage will directly affect the size of the entire circuit parameters change, which will bring hidden dangers product quality . In addition, there are some power dissipation requirements of the product, it is desirable to ensure that the same forward voltage as low as possible luminous efficiency.


CCT binning


For white LED color temperature is characterized by its color industry more than a parameter that can be directly exhibit LED color is warm or cool or white.


Chromaticity coordinates x, y Binning

For white or monochromatic color product parameters can be used to express the LED color area in which, generally require four-point x, y determines a chromaticity region. Must be guaranteed within a certain test by means of LED whether the required fall four points x, y chromaticity region.


DWL bin

For monochromatic LED, the main wavelength is an important indicator to measure the color parameters, a direct reflection of the human eye dominant wavelength of the LED light visual experience.

CRI Binning

CRI is directly related to the degree of discoloration S light shines on the object object, LED lighting products for this parameter is very important.

For the above points, we can use a variety of programs based on the actual situation effectively by separation, by professional high-power LED automatically by separation sub-file, high efficiency, fast, can be done for every one LED One is by separation from the measured voltage to the leakage flux flowing to multi-channel spectrum with a lot of manual processes for quality control and the bins.