J. Eur. Opt. Soc.-Rapid Publ.
Volume 12, Number 1, 2016
|Number of page(s)||12|
|Published online||25 October 2016|
LED-based Vis-NIR spectrally tunable light source - the optimization algorithm
University of Kragujevac, Faculty of Technical Sciences, 32000, Cacak, Serbia
2 University of Belgrade, Faculty of Physics, 11000, Belgrade, Serbia
3 University of Nis, Faculty of Science and Mathematics, 18000, Nis, Serbia
Accepted: 18 October 2016
Background: A novel numerical method for calculating the contributions of individual diodes in a set of light emitting diodes (LEDs), aimed at simulating a blackbody radiation source, is examined. The intended purpose of the light source is to enable calibration of various types of optical sensors, particularly optical radiation pyrometers in the spectral range from 700 nm to 1070 nm.
Results: This numerical method is used to determine and optimize the intensity coefficients of individual LEDs that contribute to the overall spectral distribution. The method was proven for known spectral distributions: “flat” spectrum, International Commission on Illumination (CIE) standard daylight illuminant D65 spectrum, Hydrargyrum Medium-arc Iodide (HMI) High Intensity Discharge (HID) lamp, and finally blackbody radiation spectra at various temperatures.
Conclusions: The method enables achieving a broad range of continuous spectral distributions and compares favorably with other methods proposed in the literature.
Key words: Algorithmic solution / LEDs / Calibration source / Blackbody / Optical pyrometers
© The Author(s) 2016
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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