24 October 2017 Bandwidth correction for LED chromaticity based on Levenberg-Marquardt algorithm
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Proceedings Volume 10461, AOPC 2017: Optical Spectroscopy and Imaging; 1046111 (2017) https://doi.org/10.1117/12.2285031
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China
Abstract
Light emitting diode (LED) is widely employed in industrial applications and scientific researches. With a spectrometer, the chromaticity of LED can be measured. However, chromaticity shift will occur due to the broadening effects of the spectrometer. In this paper, an approach is put forward to bandwidth correction for LED chromaticity based on Levenberg-Marquardt algorithm. We compare chromaticity of simulated LED spectra by using the proposed method and differential operator method to bandwidth correction. The experimental results show that the proposed approach achieves an excellent performance in bandwidth correction which proves the effectiveness of the approach. The method has also been tested on true blue LED spectra.
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Chan Huang, Chan Huang, Shiqun Jin, Shiqun Jin, Guo Xia, Guo Xia, } "Bandwidth correction for LED chromaticity based on Levenberg-Marquardt algorithm ", Proc. SPIE 10461, AOPC 2017: Optical Spectroscopy and Imaging, 1046111 (24 October 2017); doi: 10.1117/12.2285031; https://doi.org/10.1117/12.2285031
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