2011
DOI: 10.1117/12.886341
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Sensing of FWHM and peak wavelength for LEDs via low-cost filter-array spectrum sensor

Abstract: Peak wavelength and full-width-half-maximum (FWHM) are the two important parameters to characterize the spectra of monochromatic LED lights. In this work, a low-cost miniature filter-array spectrum sensor for accurate LED measurement is proposed. For mapping the data from the outputs of the filter-array spectrum sensor to the measurement parameters of peak wavelength and FWHM, Gaussian curves are used as the basis functions to facilitate the estimation.In addition, particle swarm optimization (PSO) is utilized… Show more

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“…Finally, the methods for solving target spectra by spectrometers using computational spectroscopy techniques have been diversified. Specific methods such as Lcurve-Tikhonov regularization, GCV-Tikhonov regularization, and non-negative least squares have been used for practical spectral reconstruction studies [9][10][11].…”
Section: Introductionmentioning
confidence: 99%
“…Finally, the methods for solving target spectra by spectrometers using computational spectroscopy techniques have been diversified. Specific methods such as Lcurve-Tikhonov regularization, GCV-Tikhonov regularization, and non-negative least squares have been used for practical spectral reconstruction studies [9][10][11].…”
Section: Introductionmentioning
confidence: 99%