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1. WO2020193255 - APPARATUS FOR GENERATING A SPATIALLY MODULABLE POWER DENSITY DISTRIBUTION FROM LASER RADIATION

Publication Number WO/2020/193255
Publication Date 01.10.2020
International Application No. PCT/EP2020/057115
International Filing Date 16.03.2020
IPC
G02B 26/10 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
08for controlling the direction of light
10Scanning systems
G02B 26/12 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
08for controlling the direction of light
10Scanning systems
12using multifaceted mirrors
G02B 27/09 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/-G02B26/119
09Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for
B22F 3/105 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
3Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
10Sintering only
105by using electric current, laser radiation or plasma
B29C 64/153 2017.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
64Additive manufacturing, i.e. manufacturing of three-dimensional objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
10Processes of additive manufacturing
141using only solid materials
153using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/268 2017.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
64Additive manufacturing, i.e. manufacturing of three-dimensional objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
20Apparatus for additive manufacturing; Details thereof or accessories therefor
264Arrangements for irradiation
268using laser beams; using electron beams
CPC
B22F 2003/1056
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
3Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; ; Presses and furnaces
10Sintering only
105by using electric current ; other than for infra-red radiant energy; , laser radiation or plasma
1055Selective sintering, i.e. stereolithography
1056Apparatus components, details or accessories
B22F 2003/1057
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
3Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; ; Presses and furnaces
10Sintering only
105by using electric current ; other than for infra-red radiant energy; , laser radiation or plasma
1055Selective sintering, i.e. stereolithography
1056Apparatus components, details or accessories
1057for control or data processing, e.g. algorithms
B22F 3/1055
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
3Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; ; Presses and furnaces
10Sintering only
105by using electric current ; other than for infra-red radiant energy; , laser radiation or plasma
1055Selective sintering, i.e. stereolithography
B29C 64/268
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
64Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
20Apparatus for additive manufacturing; Details thereof or accessories therefor
264Arrangements for irradiation
268using laser beams; using electron beams [EB]
B33Y 30/00
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
30Apparatus for additive manufacturing; Details thereof or accessories therefor
B33Y 50/02
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
50Data acquisition or data processing for additive manufacturing
02for controlling or regulating additive manufacturing processes
Applicants
  • FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E. V. [DE]/[DE]
Inventors
  • WESTPHALEN, Thomas
Agents
  • GAGEL, Roland
Priority Data
10 2019 204 032.225.03.2019DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VORRICHTUNG ZUR ERZEUGUNG EINER RÄUMLICH MODULIERBAREN LEISTUNGSDICHTEVERTEILUNG AUS LASERSTRAHLUNG
(EN) APPARATUS FOR GENERATING A SPATIALLY MODULABLE POWER DENSITY DISTRIBUTION FROM LASER RADIATION
(FR) DISPOSITIF POUR GÉNÉRER UNE RÉPARTITION DE PUISSANCES VOLUMIQUES SPATIALEMENT MODULABLE À PARTIR D’UN RAYONNEMENT LASER
Abstract
(DE)
Bei einer Vorrichtung zur Erzeugung einer räumlich modulierbaren Leistungsdichteverteilung ausmehreren Laserstrahlenwird eine Faseraufnahme (A) mit nebeneinander angeordneten Lichtleitfasern (F) oder eine Aufnahmeeinrichtung für mehrere Faserstecker (FS) oder Faserkollimatoren (KO) mit fest verbundenen Lichtleitfasern (F) nebeneinander eingesetzt. Faseraustrittsflächen der Lichtleitfasern (F) bilden hierbei ein ein-oder zweidimensionales Array. Die aus den Faseraustrittsflächen austretenden Laserstrahlen (6) werden über eine gemeinsame optische Anordnung (2, 4, 10) und eine gemeinsame Scaneinrichtung (3) auf eine Zielebene gerichtetund über die Zielebene geführt. Die Vorrichtung weist eine Dreheinrichtung (1) auf, mit der zumindest die Faseraufnahme (A)oder Aufnahmeeinrichtung oder eine entsprechende Verteilung der Laserstrahlen (6) um eine parallel zu den Laserstrahlen (6) verlaufende Achse (R) drehbar ist. Die Vorrichtung ermöglicht eine parallelisierte Laser- materialbearbeitung mit hoher Flexibilität.
(EN)
In an apparatus for generating a spatially modulable power density distribution from a plurality of laser beams, use is made of a fibre receptacle (A) with optical fibres (F) disposed next to one another or a receiving device for a plurality of fibre plugs (FS) or fibre collimators (KO) with securely connected optical fibres (F) next to one another. Here, fibre outcoupling areas of the optical fibres (F) form a one-dimensional or two-dimensional array. The laser beams (6) emerging from the fibre outcoupling areas are directed on a target plane via a common optical arrangement (2, 4, 10) and a common scanning device (3) and are guided over the target plane. The apparatus has a turning device (1), by means of which at least the fibre receptacle (A) or receiving device or a corresponding distribution of the laser beams (6) is rotatable about an axis (R) extending parallel to the laser beams (6). The apparatus facilitates parallelized laser material processing with great flexibility.
(FR)
Selon la présente invention, avec un dispositif pour générer une répartition de puissances volumiques spatialement modulable à partir de plusieurs faisceaux laser, un logement de fibres (A) avec des fibres guides de lumière (F) disposées les unes à côté des autres ou un système de logement (FS) pour plusieurs connecteurs de fibre ou collimateurs à fibres (KO) avec des fibres guides de lumière (F) solidarisées sont installés les uns à côté des autres. Des surfaces de sortie de fibre des fibres guides de lumière (F) forment un réseau à une ou deux dimensions. Les faisceaux laser (6) sortant des surfaces de sortie de fibre sont dirigés par un dispositif optique commun (2, 4, 10) et un système de balayage commun (3) vers un plan cible et menés sur le plan cible. Le dispositif comprend un système tournant (1) avec lequel au moins le logement de fibres (A) ou le système de logement ou une répartition correspondante des faisceaux laser (6) peut être tourné autour d’un axe (R) s’étendant parallèlement aux faisceaux laser (6). Le dispositif permet un usinage de matériaux parallélisé au laser avec une grande flexibilité.
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