N° 63
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Supersnabb detektion av holografiska markeringar inom tryckeriindustrin De flesta holografiska markeringar har egenskapen att ge direktreflektion tillbaka när ljus infaller med en vinkel av 45 grader. Detta gäller både för transparent så som metalliserad folie.
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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