BeamWatch® AM
BeamWatch AM ist ein integriertes Lasermessgerät zur Messung kritischer Strahlparameter in laserbasierten Produktionsanlagen der Additiven Fertigung.
BeamWatch AM misst parallel mehrere Profile entlang der Strahlkaustik im Sichtfeld der Kamera. Die Echtzeit-Messungen werden in Videoübertragungsraten durchgeführt und beinhalten:
- Fokusdurchmesser und Fokuslage
- Fokusshift
- Zentrierung
- M2 oder K-Faktor
- Divergenz
- Strahlparameterprodukt
- Rayleigh-Länge
- Absolute Laserleistung
Die Messung in Echtzeit ermöglicht selbst während der Start-up Phase des Lasers die Erfassung der dynamischen Fokusshift. Die Messtechnik von BeamWatch AM basiert auf der Rayleigh Streuung des Laserlichts an Sauerstoff- und Stickstoff-Molekülen der Luft. Die Messung dieses gestreuten Lichts liefert ein Strahlprofil in Beobachtungsrichtung vergleichbar zu einer Messung mittels rotierender Schlitzapertur. Gemessen wird mit einer konventionellen CCD-Kamera und einem Bilderfassungssystem. BeamWatch AM beinhaltet eine CCD-Kamera für räumliche Messungen und einen NIST-rückfahrbaren Leistungssensor, der eine vollständige Analyse des Leistungsdichteprofils des Lasers liefert.
Die Kamera zeichnet gleichzeitig und in Echtzeit die Strahlkaustik inklusive dem Nah- und Fernfeld sowie den Strahlfokus auf. Die Messtechnik schließt die Ausbreitung und die M2-Messungen gemäß dem ISO 11146-Standard ein. Zusätzlich wird, da alle Messungen in Echtzeit erfolgen, auch die Fokusshift in der kritischen Phase während der ersten Laser Start-up Sekunden gemessen und dokumentiert.
Specification
- 1060-1080nm
- 50µm
- 50-1000 Watts
- 1.5MW/CM²
- ISO 11146 Measurements
- NIST traceable calibration ±3%
- CE, UKCA, China RoHS
Ordering
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BW-NIR-2-50-AM
SP90470Beam profiling system for Additive Manufacturing Systems
Angebot anfragen
Documentions
BeamWatchBeamWatch is our full-function software with an extensive set of ISO quantitative propagation measurements, NIST calibrated power measurements, graphical representations of the beam caustic. Requires user supplied PC.
Drawings
FAQ
Why is beam profiling of the lasers in Additive Manufacturing laser systems necessary and required to be conducted at different power levels?
When medical, aerospace, or other complex devices are produced in an Additive Manufacturing, powder-bed laser system, the product design requires the use of a variety of power levels. These different setting are a function of the structural integrity of the device under build, but also the efficiency of the design to avoid the use of excess materials, powders, and processing time. In a typical 1kw Additive Manufacturing laser, power levels during the build can range from 400W to 1000W, for either short or long durations. Therefore, profiling the laser beam at these different power levels is required. In a recent application test, a 1kW laser was provided at a variety of power settings from 400W to 1kW, in increments of 200Ws. The result of this diagnostic test demonstrated that as the power was increased, the ellipiticity (roundness) of the beam deteriorated. The change was not significant but demonstrated that in any build requiring a 360 degree range of the laser, the focal spot would be slightly larger in one direction and slightly smaller in a different direction, resulting in a major defect of the build. And since some of these builds can take 10’s of hours, finding out after the build that the laser is not round to specification is a costly result. These beam profiling diagnostics alerted the client to a potential problem BEFORE they went to build product, avoiding costly mistakes.
CloseVideos
BeamWatch AM Engineers Explain
BeamWatch AM Engineers ExplainOphir has been honored with a 2018 Laser Focus World Platinum Innovators Award for BeamWatch AM®, the first non-contact laser beam monitoring system for additive manufacturing. In this video, Ophir engineers explain why the system is so revolutionary, how it works, and why it will help additive manufacturers.
BeamWatch AM
BeamWatch AMBeamWatch AM is an integrated laser measurement system designed to measure critical laser beam parameters for laser-based additive manufacturing systems.
BeamWatch AM is an integrated laser measurement system designed to measure critical laser beam parameters for laser-based additive manufacturing systems.
