[article]
| Titre : |
Precise colour and gloss measurement in one instrument |
| Type de document : |
texte imprimé |
| Auteurs : |
Henrik Folkerts, Auteur |
| Année de publication : |
2016 |
| Article en page(s) : |
p. 20-22 |
| Langues : |
Anglais (eng) |
| Catégories : |
Brillance (optique) -- Mesure
Colorimétrie
Mesure -- Instruments
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
How tolerances for both colour and gloss have tightened over the years and illustrates how two into one will go, by combining accuracy, ease of use and functionality changes in appearance.
Material tests are often performed under extreme weather conditions. Paint manufacturers have to perform weathering studies on panels or parts in the desert. In order to objectively determine changes in appearance, colour and gloss need to be measured during the exposure time.
Portable measuring devices allow performing the test outside at the test areas saving a lot of time as the parts don't need to be carried back to the test lab. The spectro-guide gloss gives reliable measurement results according to international specifications. A patented temperature control guarantees highly stable results. Thus, it is no longer necessary to re-calibrate the instrument every eight hours ; the spectro-guide gloss only needs to be re-calibrated every three months - even when the temperature changes. To avoid any user influence the innovative LED technology detects amblent light during the measurement. The data are corrected or a message is displayed to make the user aware of an invalid reading.
Due to an optimised power management and the fact that LEDs only consume a minute amount of energy the spectro-guide gloss uses standard alkaline batteries lasting for up to 8000 readings. This innovative technology also allows using less mechanical components. Therefore, the spectro-guide could be really designed as a portable, light weight and, at the same time, robust instrument. To supply a full description of the appearance of a surface and to precisely analyse the reason for a visuel mismatch, it is necessary to determine bath surface properties: colour and gloss. |
| Note de contenu : |
- Gloss
- Reflection behaviour of surfaces
- Gloss measurement
- Colour
- Standard illuminant
- Standard observer
- Interaction between light and object
- FIGURES : 1. Components of gloss perception : light source, surface, observer - 2. High gloss and matte to semi-gloss surfaces - 3. Geometries 20° high gloss surfaces, 60° medium gloss surfaces, 85° matte surfaces - 4. Standard illuminant - 6. and 7. Right - 8. Below |
| En ligne : |
https://drive.google.com/file/d/1Gb8Qf61OkRkMfue8IZR9SfFkJebC2wla/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27103 |
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 206, N° 4625 (10/2016) . - p. 20-22
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Precise colour and gloss measurement in one instrument in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4625 (10/2016)
