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Energy Express

  • Editor: Christian Seassal
  • Vol. 22, Iss. S4 — Jun. 30, 2014
  • pp: A1029–A1039

Study on the correlations between color rendering indices and the spectral power distribution

Yue Lin, Zhonghua Deng, Ziquan Guo, Zhuguang Liu, Hai Lan, Yijun Lu, and Yongge Cao  »View Author Affiliations

Optics Express, Vol. 22, Issue S4, pp. A1029-A1039 (2014)

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The intrinsic spectrally resolved sensitivity (ISRS) of color rendering indices (CRIs) is investigated by using spectral loss simulations. It is demonstrated that Ra exhibits large sensitivities around 444, 480, 564, and 622 nm, while for R9 the sensitivity peaks are around 461, 581 and 630 nm, which all shift slightly with the correlated color temperature. If considering the ISRS as a bridge between the spectral power distribution of LED and its CRI, one could obtain a high CRI by minimizing the deviation between the shapes of the illuminant spectrum and the reference spectrum, both after modulations by the ISRS as a weighting function. This approach, recommended as a guideline for the spectra design aiming at a high CRI, is described and justified in depth via a mathematical model. This method is spectra-oriented and could largely facilitate the spectra design.

© 2014 Optical Society of America

OCIS Codes
(230.3670) Optical devices : Light-emitting diodes
(330.0330) Vision, color, and visual optics : Vision, color, and visual optics
(330.1710) Vision, color, and visual optics : Color, measurement
(330.1730) Vision, color, and visual optics : Colorimetry
(330.1715) Vision, color, and visual optics : Color, rendering and metamerism

ToC Category:
Light-Emitting Diodes

Original Manuscript: February 20, 2014
Revised Manuscript: March 31, 2014
Manuscript Accepted: May 12, 2014
Published: May 22, 2014

Virtual Issues
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Yue Lin, Zhonghua Deng, Ziquan Guo, Zhuguang Liu, Hai Lan, Yijun Lu, and Yongge Cao, "Study on the correlations between color rendering indices and the spectral power distribution," Opt. Express 22, A1029-A1039 (2014)

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