Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Visual Evaluation of Daylight Simulators for the Colorimetry of Luminescent Materials

Visual Evaluation of Daylight Simulators for the Colorimetry of Luminescent Materials The accuracy of several methods for assessing the colorimetric performance of daylight simulators as practical realizations of CIE standard daylight illuminants such as D65 was studied by visual methods. Eight luminescent samples containing various fluorescent whitening agents were used. Visual differences between sample pairs, each consisting of a luminescent sample and its nonluminescent substrate, were judged under a reference source simulating D65 and six test sources with different ultraviolet content from the reference source but nearly the same spectral irradiance in the visible region. Over 3000 observations were made by eight observers. Visual scale values were derived and compared to indices calculated by five published methods. The results show that four methods based on colorimetric weighting gave significantly better correlations than one based on radiometric weighting, with little choice among them; that the CIELAB color‐difference equation was preferred to CIELUV; and that the choice of 2° or 10° standard observer had no effect. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Color Research & Application Wiley

Visual Evaluation of Daylight Simulators for the Colorimetry of Luminescent Materials

Loading next page...
 
/lp/wiley/visual-evaluation-of-daylight-simulators-for-the-colorimetry-of-omA2k2qcg4

References (13)

Publisher
Wiley
Copyright
Copyright © 1981 Wiley Periodicals, Inc., A Wiley Company
ISSN
0361-2317
eISSN
1520-6378
DOI
10.1002/col.5080060407
Publisher site
See Article on Publisher Site

Abstract

The accuracy of several methods for assessing the colorimetric performance of daylight simulators as practical realizations of CIE standard daylight illuminants such as D65 was studied by visual methods. Eight luminescent samples containing various fluorescent whitening agents were used. Visual differences between sample pairs, each consisting of a luminescent sample and its nonluminescent substrate, were judged under a reference source simulating D65 and six test sources with different ultraviolet content from the reference source but nearly the same spectral irradiance in the visible region. Over 3000 observations were made by eight observers. Visual scale values were derived and compared to indices calculated by five published methods. The results show that four methods based on colorimetric weighting gave significantly better correlations than one based on radiometric weighting, with little choice among them; that the CIELAB color‐difference equation was preferred to CIELUV; and that the choice of 2° or 10° standard observer had no effect.

Journal

Color Research & ApplicationWiley

Published: Dec 1, 1981

There are no references for this article.