LASER DIODE BASED LINE ILLUMINATION SOURCE AND LASER LINE ILLUMINATION

A laser line illumination system (1, 1') provides a laser line (L) in a working plane (WP) for line illumination of an object (7). The laser line (L) extends in a first direction (X). The laser system (1) comprises a light source unit for providing a combined laser beam (11A) from a plurality o...

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Bibliographische Detailangaben
Hauptverfasser:	DORER, Stefan, TILLKORN, Christoph
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BASIC ELECTRIC ELEMENTS CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DEVICES USING STIMULATED EMISSION ELECTRICITY MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHYSICS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	A laser line illumination system (1, 1') provides a laser line (L) in a working plane (WP) for line illumination of an object (7). The laser line (L) extends in a first direction (X). The laser system (1) comprises a light source unit for providing a combined laser beam (11A) from a plurality of laser diode assemblies (19A, 19B, 19C, 19D), each comprising a plurality of laser diode bars (21) arranged side by side along a stacking direction (X) and each configured for emitting a primary laser beam (3A) having an M2-value along the stacking direction (X) that is larger than an M2-value in a direction orthogonal to the stacking direction (X), and a beam coupling unit (11', 11'') configured to spatially superimpose the primary laser beams (3A) of the plurality of laser diode assemblies (19A, 19B, 19C, 19D) to create the combined laser beam (11A), wherein the first direction (X) is the direction of the slow axis (S) of the combined laser beam (11A) and a second direction (Y) is the direction of the fast axis (F) of the combined laser beam (11A). The laser system (1) further comprises a homogenization unit (15) configured to superimpose portions of the combined laser beam (11A) arranged in the first direction (X) along the combined laser beam (11A) at a focal plane (FP) of the homogenization unit (15). The laser system (1) is in particular suitable for providing a laser line (L) that can be stitched to another laser line (L') of a respective further laser system (1'). L'invention concerne un système d'éclairage à ligne laser (1, 1') fournissant une ligne laser (L) dans un plan de travail (WP) en vue d'un éclairage de ligne d'un objet (7). La ligne laser (L) s'étend dans une première direction (X). Le système laser (1) comprend une unité de source de lumière permettant de fournir un faisceau laser combiné (11A) à partir d'une pluralité d'ensembles de diodes laser (19A, 19B, 19C, 19D), comprenant chacun une pluralité de barres de diodes laser (21) disposées côte à côte le long d'une direction d'empilement (X) et conçus chacun pour émettre un faisceau laser primaire (3A) ayant une valeur M2 le long de la direction d'empilement (X) qui est supérieure à une valeur M2 dans une direction orthogonale à la direction d'empilement (X), et une unité de couplage de faisceau (11', 11''') conçue pour superposer spatialement les faisceaux laser primaires (3A) de la pluralité d'ensembles de diodes laser (19A, 19B, 19C, 19D) pour créer le faisceau laser combiné (11A), la première