Imaging optic for material machining by means of laser radiation and laser machining head having same
US11103958B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 3, 2017 |
| Grant date | Aug 31, 2021 |
| Priority date | — |
| Expiry date | Feb 6, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B19/0052
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention pertains to imaging optics (20) for material machining by means of laser irradiation, with said focusing optics comprising collimator optics (21) for collimating the divergent working laser beam (121) and focusing optics (22) for focusing the working laser beam (12) on a workpiece (14) to be machined, wherein the collimating optics (21) comprise a first lens or lens group (211) with positive focal length for focusing a working laser beam source (18) in a virtual intermediate focal point and a second movable lens or lens group (212) with negative focal length for focusing the virtual intermediate focal point to infinity. The invention furthermore proposes a laser machining head (1) with a housing (10), through which a working laser beam (12) can be guided. The inventive imaging optics (20) serve for generating a working focal point (15).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.