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LED-based Vis-NIR spectrally tunable light source - the optimization algorithm
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LED-based Vis-NIR spectrally tunable light source - the optimization algorithm
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Journal Article
LED-based Vis-NIR spectrally tunable light source - the optimization algorithm
2016
Overview
BackgroundA 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.ResultsThis 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.ConclusionsThe method enables achieving a broad range of continuous spectral distributions and compares favorably with other methods proposed in the literature.
Publisher
EDP Sciences
