Light emitting diodes (LEDs), the next-generation lighting with their low energy consumption and superior efficiency are environmentally friendly. Unlike fluorescent lamps, they do not contain mercury. With the introduction of high-brightness white LEDs, it has led to significant market potential for a range of new lighting applications. The high efficiency of these LEDs now means that solutions for room lighting, automotive headlights and backlighting for LCD displays can be realized.
However, it is particularly difficult for LED manufacturers to produce LEDs with consistent characteristic due to the inherent properties of the LEDs. Variation occurs because of the wafer, the die and the package. Hence LED manufacturers use binning methods to manage variation in LED performance during mass production.
LED Binning (Ranking)
In LED Binning, LEDs are sorted into bins, based upon the LEDs’
For white LEDs, the chromaticity is typically binned in regions of the CIE 1931 Yxy color space or correlated color temperature (CCT). For non-white (monochromatic) LEDs, chromaticity is typically specified by the dominant wavelength, measured in nanometers (nm) of the LED light output.
Luminous flux (total light output)
Chromaticity / color (color of the light output)
Forward voltage (an indication of efficency)
Konica Minolta Chroma Meter CL-200A and Illuminance Spectrophotometer CL-500Acomes with a standard software for color binning.
For a demonstration, write to us now.
Marveen C. Bernabe
Color Applications Specialists