A Spectrally Tunable LED Sphere Source Enables Accurate Calibration of Tristimulus Colorimeters

Published

October 22, 2004

Author(s)

Irena Fryc, Steven W. Brown, Yoshihiro Ohno

Abstract

The Four-Color Method (FCM) was developed to improve the accuracy of chromaticity measurements of various colors of a display. The method is valid for each type of display having similar spectra. To develop the Four-Color correction matrix, colorimeters measure the spectra of primary red, green, blue and white colors of a display. Consequently, a calibration facility should be equipped with 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 different 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 SPD of a display works well with the FCM for the calibration of colorimeters.

Proceedings Title

Conference Lightmetry '04

Conference Dates

October 20-22, 2004

Conference Location

Warsaw, PL

Conference Title

SPIE

Pub Type

Conferences

Keywords

color, colorimeter, dislay, Four Color Method, light emitting diode (LED), spectral power distribution

Citation

Fryc, I. , Brown, S. and Ohno, Y. (2004), A Spectrally Tunable LED Sphere Source Enables Accurate Calibration of Tristimulus Colorimeters, Conference Lightmetry '04, Warsaw, PL (Accessed December 26, 2024)