Patent ID: 11876338
Assignee: RHEINMETALL WAFFE MUNITION GMBH
Field: Optics (Instruments)
Classification: CPC G  H | IPC H

Claim 0:
1. A device for combining at least two input laser beams, the input laser beams each having a spectral bandwidth and comprising different spectral components each with different wavelengths, the device comprising:
at least one pre-compensation unit for the at least two input laser beams, wherein the pre-compensation unit has at least one diffractive optic which expands each of the input laser beams into a respectively assigned intermediate beam bundle in which the spectral components are spatially arranged so as to be adjacent to one another with increasing wavelength, such that at least two intermediate beam bundles are provided;
a combination unit for the at least two intermediate beam bundles, the combination unit comprising at least a first diffractive optical element and a second diffractive optical element arranged downstream in the beam path, and the combination unit being aligned with the pre-compensation unit such that the first diffractive optical element converts each intermediate beam bundle into a convergent beam bundle having a beam waist, the beam waist lying on the second diffractive optical element, and the second diffractive optical element being designed such that all incident spectral components are diffracted in a common radiation direction,
wherein the pre-compensation unit has at least one first diffractive optical element and has, downstream in the beam path, a second diffractive optical element, and
wherein the pre-compensation unit and/or the combination unit comprise adaptation optics for changing convergence properties and/or divergence properties and/or a beam width.