Beam forming lens system for laser cutting, and apparatus comprising same
AssigneePrecitec GmbH & Co. KG
InventorAndreas Rudolf
Life of this patent
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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).
Claims12
An apparatus for machining material using a laser beam, comprising:
- a machining head configured to emit a machining laser beam;
- a beam forming lens system having a two-dimensional axicon array with a plurality of microaxicons for creating an annular intensity profile of the machining laser beam, wherein each of the microaxicons have a curved surface area to form a dome-like shape, wherein a corresponding partial beam of the machining laser beam passes through each of the microaxicons;
- and
- a focusing lens system configured to receive and focus the machining laser beam onto a workpiece by superimposing partial beams of the machining laser beam, wherein the beam forming lens system is configured to form a homogenized annular intensity profile of the machining laser beam in a focal plane of the focusing lens system.
Dependencies are inferred from the claim text.