[article]
| Titre : |
Elementary study of IR reflectance properties of organic and inorganic pigment formulation |
| Type de document : |
texte imprimé |
| Auteurs : |
K. K. Gupta, Auteur ; G. N. Mathur, Auteur ; V. S. Tripathi, Auteur |
| Année de publication : |
2004 |
| Article en page(s) : |
p. 45-60 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Each of the earthen object wether it is a part of nature or made by man has its specific reflectance profile not only in visual part but in other parts of electromagnetic spectrum also. This is the characteristic fingerprint of the object. This has given birth to various kinds of sensor/detectors working in specific band of spectrum. The phenomenon of vision lies on the contrast of object to immediate surrounding. No contrast no vision is formed. For camouflaging point of view, it needs to simulate the reflectance profile of objects with the immediate surrounding. The most common sensor available with the service are telescope, binoculars, night vision devices, IR photographic, film, IR cameras and thermal imagery systems etc. working in 800-1200nm and 3-5 µm wave length band. For matching the reflectance of the military objects/equipments/troops, they need coating or painting of pigment formulation to be applied directly on surface of equipment or in the form of textile covering systems which might simulate visual and IR reflectance properties. All the military objects i.e. vehicles, tanks or other artilleries and troops need to be camouflaged to hide from adversary. Presently, the army is equipped with various types of detecting sensors other than conventional binoculars and telescope working in visual band of electromagnetic regions only (350-750nm). Therefore, a vibrand need arises to study the reflectance properties of each part ofnature in entire range of electromagnetic radiation ranging i.e. from 350-1200nm. To protect the object against visual detection (400-750nm) and NIR (750-1200nm) region of electromagnetic spectrum, it needs to blend the object with surrounding in term of reflectance in these wave length bands. |
| Note de contenu : |
- LITERATURE SURVEY : Organic and inorganic pigments - Optical behaviour of pigments - Near infrared
- OBJECTIVE OF PIGMENT FORMULATION : Study of NIR properties of natural objects (pigments details - binder used) - Study and evaluation - Study and observation of single pigment - Study of formulation using two pigments - Study of pigment formulations using three pigments - Study of the combination of four pigments.
- RESULTS AND DISCUSSIONS : 1) Formulations using single pigments - 2) Formulations using two pigments - 3) Formulations using three pigments - 4) Formulation using four pigments |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12006 |
in PAINTINDIA > Vol. LIV, N° 4 (04/2004) . - p. 45-60
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