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The phosphor’s optical properties—chromaticity coordinate relationship of phosphor converted white LEDs

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Abstract

Based on optical ray-tracing simulations we discuss the effect of the extinction coefficient and the quantum efficiency of the phosphors on the angular homogeneity of the white light emitted from phosphor converted light-emitting diodes. In particular variations of the extinction coefficient are prone to affect diverse CIE chromaticity coordinates for different viewing angles. Contrarily, the impact of the quantum efficiency on angle dependent variations of the chromaticity coordinates turns out to be of minor importance.

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Authors and Affiliations

  1. Institute of Surface Technologies and Photonics, Joanneum Research Forschungsgesellschaft mbH, Franz-Pichler Straße 30, 8160, Weiz, Austria

    C. Sommer, P. Hartmann & F. P. Wenzl

  2. Tridonic Jennersdorf GmbH, Technologiepark 10, 8380, Jennersdorf, Austria

    P. Pachler & H. Hoschopf

Authors
  1. C. Sommer
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  2. P. Hartmann
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  3. P. Pachler
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  4. H. Hoschopf
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  5. F. P. Wenzl
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Corresponding author

Correspondence to F. P. Wenzl.

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Sommer, C., Hartmann, P., Pachler, P. et al. The phosphor’s optical properties—chromaticity coordinate relationship of phosphor converted white LEDs. Opt Quant Electron 44, 111–117 (2012). https://doi.org/10.1007/s11082-011-9528-x

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  • DOI: https://doi.org/10.1007/s11082-011-9528-x

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