Quantifying the quality of D65 simulator

Y. M. Lam, John Haozhong Xin, K. M. Sin

Research output: Journal article publicationConference articleAcademic researchpeer-review


This study investigated the influence of various D65 simulators on visual color matching seen under five D65 simulators. These five D65 simulators were categorised by CIE No. 51 method from A to D. The gray scale rating method was used to assess the visual difference of 77 textile metamers. The instrumental color difference of each metamer was calculated using SPD of CIE illuminant D65 and real SPDs of D65 simulators. The performance factor (PF/3) was used to indicate the agreement between visual differences under five D65 simulators as well as instrumental color difference and visual difference. The observer accuracy and observer repeatability were also analysed by PF/3 measure. The experiment results showed that the visual data obtained from category A and B D65 simulators had a good agreement in PF/3 measure. The results also indicated that better agreement between instrumental and visual color difference was obtained if the real SPDs of D65 simulator were used instead of the CIE illuminant D65 data. The general color rendering index, Ra, for each D65 simulator was calculated by CIE No. 13.3 method. However, this index was inconsistent with MI(vis) in CIE No. 51 method.
Original languageEnglish
Pages (from-to)731-735
Number of pages5
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 1 Dec 2001
Event9th Congress of the International Colour Association - Rochester, NY, United States
Duration: 24 Jun 200129 Jun 2001


  • CIE illuminant D65
  • D65 simulator
  • General color rendering index
  • Spectral power distribution
  • Visual range metamerism index

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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