BeamWatch® AM
BeamWatch® AM

BeamWatch® AM

Описание: 

BeamWatch AM — это встраиваемая система измерения критических параметров лазерного излучения, предназначенная для систем аддитивного производства на основе лазерных технологий.
 
BeamWatch AM выполняет одновременные измерения нескольких профилей, а также каустики пучка в поле зрения камеры. Скорость измерений в режиме реального времени зависит от скорости передачи изображения. Измеряемые параметры:

  • диаметр и расположение перетяжки пучка (фокусного пятна);
  • смещение фокуса;
  • центроид;
  • коэффициент M2 или K;
  • расходимость;
  • произведение параметров пучка;
  • длина по Релею;
  • абсолютная мощность;

Работа в режиме реального времени также позволяет измерять динамическое смещение фокуса во время запуска лазера. Применяемая в системе BeamWatch AM технология измерения основана на явлении рэлеевского рассеяния видимого лазерного излучения под воздействием молекул кислорода и азота при прохождении пучка через воздушную среду. Измерение этого рассеянного света аналогично сканированию щелью лазерного пучка в наблюдаемом направлении. Рассеянное излучение измеряется обычной камерой с системами захвата изображений. Система BeamWatch AM оснащена камерой для пространственных измерений и датчиком мощности, откалиброванным с прослеживаемостью до эталонов NIST, которые позволяют выполнять комплексный анализ профиля плотности мощности лазерного излучения.
 
Камера фиксирует каустику пучка в режиме реального времени, включая ближнюю, фокусную и дальнюю зону пучка. Этот способ выполнения измерений включает анализ распространения пучка и определение коэффициента M2 в соответствии с требованиями стандарта ISO 11146. Кроме того, выполнение всех измерений в режиме реального времени позволяет фиксировать смещение фокуса во время запуска и оповещать о нем.

Specification

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

Ordering

  • 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.

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.

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Videos

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.

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Tutorials and Articles

Achieving Standardized Measurements with BeamWatch AM

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

1. IntroductionDuring the past decade laser power levels used in production applications has risen significantly. Today, welding systems are commonly using laser power in the range of multiple kilowatts. To deliver continuously high product quality, the key parameters of the laser beam must be measured on a regular basis. Ophir has tackled the task and developed a non-contact measurement technology based on the Rayleigh scattering. The technology used in the BeamWatch laser beam profilers enables the measurement of high-power beams without ever touching the laser beam. As the technology is Прочитать подробнее…

White Paper - The challenge of battery production

Optimizing and controlling laser processes right from the start Прочитать подробнее…

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. Прочитать подробнее…

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? Прочитать подробнее…