Whites and fluorescence
Colorimetry - Surface color control

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R6443 V1 Article

Whites and fluorescence
Colorimetry - Surface color control

Authors : Daniel DUPONT, Daniel STEEN

Publication date: December 10, 2004 | Lire en français

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6. Whites and fluorescence

The measurement of whites [20][21] can be considered a special case, as it is in this zone that the subjective character of visual judgment is most acute. Moreover, the presence of optical whitening agents complicates measurement.

Definitions

White: qualifier given to colors that meet approximately the following conditions:

  • be practically achromatic for the chosen source;

  • have a luminous luminance (brightness-clarity) Y close to 100.

Perfect diffuser: an ideal surface color with the property of perfectly diffusing the entire luminous flux it receives from the source, evenly...

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