BeamWatch® AM
BeamWatch® AM

BeamWatch® AM


BeamWatch AM是一种集成激光测量系统,设计用于测量激光增材制造系统的关键激光束参数。
BeamWatch AM能够沿相机视场(FOV)中的光束散焦线同时测量多个轮廓。以视频速率进行实时测量。ֺ包括:

  • 光束腰(焦点)的宽度和位置
  • 焦点漂移
  • 质心
  • M2 或 K值
  • 发散
  • 光束参数产品
  • 瑞利长度
  • 绝对功率

实时性能还能够在激光启动期间测量动态焦移。BeamWatch AM测量技术的理论基础是,当光束通过介质传播时,空气中的氧和氮分子会让激光发生瑞利散射。这种散射光的测量为沿观察视图方向的激光束提供了等效狭缝扫描。利用传统相机和图像捕获系统来测量散射光。BeamWatch AM包括一台用于空间测量的相机以及一个可以对激光功率密度分布进行完整分析的NIST可溯源功率传感器。
相机同时且实时观察光束散焦线,包括光束的近场/焦点/远场。该测量技术包括符合ISO 11146标准的传播和M2测量。此外,由于所有测量均实时进行,因此可在启动秒数期间测得所发生的任何焦点漂移并给出报告。


  • 1060-1080nm
  • 50µm
  • 50-1000 Watts
  • 1.5MW/CM²
  • ISO 11146 Measurements
  • NIST traceable calibration ±3%
  • CE, UKCA, China RoHS
Need help finding the right beam profiler? Try our Beam Profiler Finder


  • BW-NIR-2-50-AM


    Beam profiling system for Additive Manufacturing Systems

  • BeamWatch
    BeamWatch 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.



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.

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Introducing BeamWatch AM Introducing BeamWatch AM
BeamWatch AM Engineers Explain BeamWatch AM Engineers Explain BeamWatch AM Engineers Explain

Ophir 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 AM BeamWatch AM

BeamWatch 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.


Tutorials and Articles

Achieving Standardized Measurements with BeamWatch AM

Industry-Focused Design 阅读更多...

White Paper – ISO compliance of non-contact, real-time beam analysis

Here we show that non-contact beam profiling based on Rayleigh scattering fully complies with the ISO11146 standard 阅读更多...

White Paper - The challenge of battery production

Optimizing and Controlling Laser Processes Right from The Start 阅读更多...

White Paper – Keeping Your Additive Manufacturing Laser in Spec

There is little debate about how Additive Manufacturing is adding benefits and changing the face of manufacturing in our modern age. Additive Manufacturing allows for the manufacturing of more customized parts, using more specialized materials, and will eventually create a more localized, rapid, and agile distribution network than what have been used to. 阅读更多...

Laser Measurements in Materials Processing: How and When They Absolutely, Positively Must Be Made

19th century British physicist and engineer William Thomson, 1st Baron Kelvin, was the first to say, “If you can’t measure it, you can’t improve it.” When applying this principle to improving laser-based processes, there are a variety of parameters that must be measured. Given the continuously rising power of laser systems in material processing, the requirements for measurement systems are more challenging than ever. Which technologies are available to measure high-power lasers? How often should they be measured? What measurements should be tracked? When this data is collected, what should be done with it? 阅读更多...

The Challenge of Focus Shift in High Power Laser Material Processing

High-power industrial lasers are valuable tools in material processing. Maintaining them at peak performance and optimizing the processes for which they are used will maximize throughput and minimize downtime. Periodic measurement and longterm monitoring of key laser variables, including laser output power, focused spot size, and focus spot temporal location provide the data you need to increase accuracy and optimize your process... 阅读更多...

Case Study: The Ophir Beamwatch System Optimizes Laser Process Development

The laser seam welding of sheets of zinc-coated steel – a combination of metals with disparate melting and evaporation properties – used to be a major challenge for the automotive industry. But Volkswagen AG is pursuing a promising approach with multi-focal laser welding: A newly developed process enables significantly higher welding speeds than is otherwise possible with conventional mono-focal laser beam welding systems. 阅读更多...

Sensor Fusion Enables Comprehensive Analysis of Laser Processing in Additive Manufacturing

Sensor: "A device that detects or measures a physical property and records, indicates, or otherwise responds to it." A sensor is a device that detects a physical quantity and responds by transmitting a signal. 阅读更多...