Beam forming lens system for laser cutting, and apparatus comprising same
US11376689B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 25, 2017 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | Nov 18, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/001
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention relates to a beam forming lens system for machining material using a laser beam, comprising a two-dimensional axicon array (10) featuring a plurality of microaxicons (11) for creating an annular laser beam intensity profile, the microaxicons (11) being provided with curved lateral surfaces (113). The invention also relates to an apparatus for machining material using a laser beam, comprising a beam forming lens system of said type and a focusing lens system (15) for focusing the laser beam onto a workpiece (18). The beam forming lens system is designed to create the annular laser beam intensity profile in a focal plane (F) of the focusing lens system (15).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.