The light color quality of LED operating at winter temperatures


  • Przemysław Tabaka Lodz University of Technology
  • Pawel Rozga Lodz University of Technology



The paper presents the results of calculations of colorimetric parameters of LED sources operating at a temperature range from -25oC to 25oC. The chromaticity coordinates and color rendition quality parameters were calculated on the basis of registered spectral distributions of radiation. For individual LED chromaticity shift is illustrated at CIE 1931 x,y diagram with 3 step and 7 step MacAdam ellipses.

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How to Cite

Tabaka, P., & Rozga, P. (2019). The light color quality of LED operating at winter temperatures. Photonics Letters of Poland, 11(4), 112–114.