| Titre : |
Let there be light |
| Type de document : |
texte imprimé |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 172-175 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Diodes électroluminescentes
Eclairage
Lampes à halogène
Lumière artificielle
vision des couleurs
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Uniform colour is directly associated with high quality and influences our purchasing decisions. This is especially true for multi-component products consisting of different materials and those being produced by different suppliers. The human eye is often the final judge for approving a new design. Therefore, visual inspection conditions need to be standardised to guarantee repeatable visual results. The most important colour match is under natural daylight. The CIE (Commission Internationale de l'Éclairage) defined several standard D illuminants with D65 being the most important one. The lamps used in a light booth must simulate D65 as closely as possible. Until now, fluorescent tubes were used to simulate D65. A new unique lighting setup is now able to achieve class A quality by simulating CIE D65 with a smart combination of filtered halogen lamps and LEDs. |
| Note de contenu : |
- STANDARDISATION OF VISUAL COLOUR EVALUATIONS : The observer - The object - The surroundings - The illumination - Terms for characterisation of light - Colour temperature (CT) and correlated colour temperature (CCT) - Spectral power distribution - Colour rendering index (CRI) - Metamerism index (MI)
- QUALITY MEASURES FOR SIMULATING CIE ILLUMINANTS : Definitions of light source and illuminant - Standard illuminants
- BEST-IN-CLASS DAYLIGHT WITH BYKO-SPECTRA PRO
- Fig. 1 : Planckian locus in the CIE x, y chromaticity space
- Fig. 2 : SPD curve of CIE standard illuminant 1 and illuminant A by filtered tungsten halogen
- Fig. 3 : CIE illuminants F2 and F11 and their simulation with fluorescent tubes in byko-spectra pro
- Fig. 4 : Daylight simulation with fluorescent tube
- Fig. 5 : Daylight simulation with combination of filtered halogen lamps with and withou LEDs
- Fig. 6 : The byko-spectra pro light booth
- Fig. 7 : The byko-spectra pro luminaire
- Formula 1 : Calculation of spectral power
- Formula 2 : Calculation of relative spectral power
- Formula 3 : Mathematical normalisation of a spectral power distribution curve
- Formula 4 : Calculation of the metamerism indices Mlvis and Mluv
- Table 1 : Categorisation of Mlvis and Mluv depending on colour difference formula |
| En ligne : |
https://drive.google.com/file/d/1ErMZ056F3Ghmn84dW1KRAD5XT6tjg1bK/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32816 |
in SURFACE COATINGS INTERNATIONAL > Vol. 102.4 (08-09/2019) . - p. 172-175
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Let there be light in SURFACE COATINGS INTERNATIONAL, Vol. 102.4 (08-09/2019)
