Laser marker system

G - Physics – 06 – K

Patent

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Details

G06K 1/12 (2006.01) B23K 26/06 (2006.01)

Patent

CA 2168662

A laser marker system for marking indicia onto a substrate (146) includes an exit lens (140) having a focal length and a single laser source (120). The surface of the substrate (146) to be marked is positioned generally at the focal plane of the lens (140). The single laser source (120) is arranged so that its energy output beams are oriented in a generally parallel relationship. The single laser source includes segmented reflecting means (131) for generating a plurality of output energy beams (139) to create a column of spots on the substrate (146) with a higher resolution. The segmented reflecting means (131) is comprised of a back-reflecting mirror which is formed of a plurality of different mirror segments (131a-131n). A device is provided for moving each of the plurality of different mirror segments between a lasing position (148) and a non-lasing position (150) to vary the number of output energy beams and thus the number of spots on the substrate (146).

L'invention concerne un système de marqueur à laser conçu pour faire des marques sur un substrat (146) présentant une façade et une seule source laser (120). La surface du substrat (146) est généralement située au niveau du plan focal de la lentille (140). La source laser unique (120) est placée de sorte que les faisceaux de sortie d'énergie soient orientés parallèlement les uns aux autres. Ladite source unique comporte un moyen réfléchissant segmenté (131) générant une pluralité de faisceaux de sortie d'énergie (139) de manière à créer une colonne de points sur le substrat (146) de définition supérieure. Le moyen réfléchissant segmenté (131) se compose d'un miroir de rétroréflexion constitué d'une pluralité de segments de miroirs différents (131a-131n). Un dispositif est conçu pour déplacer chacun des segments de miroirs entre une position d'émission laser (148) et une position de non-émission laser (150) de manière à faire varier le nombre de faisceaux de sortie d'énergie et ainsi le nombre de points sur le substrat (146).

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