Spectrally adjustable quasi-monochromatic radiance source based on LEDs and its application for measuring spectral responsivity of a luminance meter

Juha-Matti Hirvonen, Tuomas Poikonen, Anna Vaskuri, Petri Kärhä, Erkki Ikonen

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8 Citations (Scopus)


A spectrally adjustable radiance source based on light-emitting diodes (LEDs) has been constructed for spectral responsivity measurements of radiance and luminance meters. A 300 mm integrating sphere source with adjustable output port is illuminated using 30 thermally stabilized narrow-band LEDs covering the visible wavelength range of 380–780 nm. The functionality of the measurement setup is demonstrated by measuring the relative spectral responsivities of a luminance meter and a photometer head with cosine-corrected input optics.
Original languageEnglish
Article number115201
Number of pages8
JournalMeasurement Science and Technology
Issue number11
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed



  • quantum optics
  • instrumentation
  • measurement
  • photometers

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