Development of the LED measurement system of chromaticity coordinates correction

In this paper, we propose a procedure to adjust the chromaticity coordinates by using a few samples of the color measurement coordinate to do the error correction and choose the correction method of minimum color error difference average to be the procedure of measuring instruments, and to construct an efficient and predictable calibration procedure. This research adopts some engineering statistics methods, such as median and average methods, and corrects the experiments to obtain the chromaticity coordinates. The four calibration methods that we designed lower the average value of the color errors as 0.034. Moreover, the minimum average value of errors in the X-axis could be revised to 6.3% while the minimum average value of errors in the Y-axis 8.8%. The accuracy of best calibrated chromaticity coordinates could achieve to the percentage 71.1%.

► We develop a LED optical measurement correction system by LabVIEW. ► The average of the four color error correction methods is 0.034. ► The minimum average value of errors in the X-axis could be revised to 6.3%. ► The minimum average value of errors in the Y-axis could be revised to 8.8%. ► The accuracy of chromaticity coordinates could achieve to the percentage 71.1%.