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Détection ultra rapide de repères holographiques Une des propriétés de marques holographiques est leur reflectivité à un angle de 45°. On retrouve cette propriété sur les cibles métalliques ou transparentes.
Super fast detection of holographic reference marks in the printing industry
One of the properties of holographic marks is the direct back reflection of collimated, parallel light under a certain angle. For most of the holographic marks this angle is equal to 45° and the collimated beam is directed perpendicular to the transport direction of the printed foil. This behavior of direct back reflection can be observed on transparent as well as on metalized holographic foils.
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