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Proceedings Paper

A spectrally tunable LED sphere source enables accurate calibration of tristimulus colorimeters
Author(s): I. Fryc; S. W. Brown; Y. Ohno
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Paper Abstract

The Four-Color Matrix method (FCM) was developed to improve the accuracy of chromaticity measurements of various display colors. The method is valid for each type of display having similar spectra. To develop the Four-Color correction matrix, spectral measurements of primary red, green, blue, and white colors of a display are needed. Consequently, a calibration facility should be equipped with a number of different displays. This is very inconvenient and expensive. A spectrally tunable light source (STS) that can mimic different display spectral distributions would eliminate the need for maintaining a wide variety of displays and would enable a colorimeter to be calibrated for a number of different displays using the same setup. Simulations show that an STS that can create red, green, blue and white distributions that are close to the real spectral power distribution (SPD) of a display works well with the FCM for the calibration of colorimeters.

Paper Details

Date Published: 20 April 2006
PDF: 8 pages
Proc. SPIE 6158, Lightmetry and Light and Optics in Biomedicine 2004, 61580E (20 April 2006); doi: 10.1117/12.675770
Show Author Affiliations
I. Fryc, Bialystok Univ. of Technology (Poland)
S. W. Brown, National Institute of Standards and Technology (United States)
Y. Ohno, National Institute of Standards and Technology (United States)


Published in SPIE Proceedings Vol. 6158:
Lightmetry and Light and Optics in Biomedicine 2004
Katarzyna Kolacz; Jacek Sochacki, Editor(s)

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