Varying beam parameter product of a laser beam
US9250390B2 · kind B2 · utility
63Cited by
12References
42Claims
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Key dates
| Filing date | Dec 6, 2012 |
| Grant date | Feb 2, 2016 |
| Priority date | — |
| Expiry date | Oct 13, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/262
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical delivery waveguide for a material laser processing system includes a small lens at an output end of the delivery waveguide, transforming laser beam divergence inside the waveguide into a spot size after the lens. By varying the input convergence angle and/or launch angle of the laser beam launched into the waveguide, the output spot size can be continuously varied, thus enabling a continuous and real-time laser spot size adjustment on the workpiece, without having to replace the delivery waveguide or a process head. A divergence of the laser beam can also be adjusted dynamically and in concert with the spot size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.