IPG Photonics has developed a multiple wavelength laser processing system for efficient laser machining of workpieces. By controlling the fluence ratio between different laser beams, the system achieves material state changes with reduced total laser power. The method involves converting a broadband laser beam into harmonic wavelengths and adjusting focal plane heights for optimal results. GlobalData’s report on IPG Photonics gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on IPG Photonics, Welding robots was a key innovation area identified from patents. IPG Photonics's grant share as of May 2024 was 41%. Grant share is based on the ratio of number of grants to total number of patents.
Laser machining method with multiple wavelength beams
A recently granted patent (Publication Number: US11975405B2) discloses a laser machining method for a workpiece that involves partially converting a broadband unpolarized fiber laser beam into a second beam at a harmonic wavelength. The method includes guiding the beams along a path, simultaneously impinging them on the workpiece surface with different absorption coefficients, and controlling the fluence ratio between the beams to achieve a material state change. By adjusting focal plane heights and conversion efficiency, the method increases the absorption coefficient of the workpiece for the first beam, resulting in efficient machining with less total laser power than traditional methods.
Furthermore, the patent describes a modular laser machining apparatus and system that utilize tunable harmonic generators and non-achromatic optics to generate axial chromatic aberration between the beams. This configuration allows for precise control of the fluence ratio and material state change on the workpiece surface. The system includes components such as fluence measuring units and processing units to ensure optimal laser processing efficiency. Additionally, the patent details methods for configuring chromatic optical systems to deliver laser radiation efficiently for processing target materials, highlighting the versatility and adaptability of the disclosed laser machining technology.
To know more about GlobalData’s detailed insights on IPG Photonics, buy the report here.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
