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Proposal for an indoor daylight illuminant
Author(s) -
Gombos Katalin,
Pointer Michael,
SikLányi Cecília,
Schanda János,
Tarczali Tünde
Publication year - 2009
Publication title -
color research and application
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 62
eISSN - 1520-6378
pISSN - 0361-2317
DOI - 10.1002/col.20461
Subject(s) - standard illuminant , daylight , color temperature , optics , window (computing) , mathematics , environmental science , computer science , physics , operating system
Two indoor daylight illuminants are recommended for general colorimetric and graphic arts use. The daylight illuminants are derived using CIE standard illuminant D65 and illuminant D50 together with the average spectral transmission of a large number of window glass samples. We show that the average window glass filters not only the blue part of the spectrum but also the red part to such an extent that it has to be taken into consideration. Apart from some extreme glass types, the bulk of the window glasses now in use do not show a very large variation in their spectral transmittances, so that an average curve can adequately represent their filtering action. © 2008 Wiley Periodicals, Inc. Col Res Appl, 34, 18–25, 2009.