Wippermann, F.F.WippermannZeitner, U.-D.U.-D.ZeitnerDannberg, P.P.DannbergBräuer, A.A.BräuerSinzinger, S.S.Sinzinger2022-03-032022-03-032007https://publica.fraunhofer.de/handle/publica/21321210.1364/OE.15.0062182-s2.0-34248509059Lens array arrangements are commonly used for the homogenization of highly coherent laser beams. These fly's eye condenser configurations can be used to shape almost arbitrary input intensity distributions into a top hat. Due to the periodic structure of regular arrays the output intensity distribution is modulated by equidistant sharp intensity peaks which are disturbing the homogeneity. As a new approach we apply chirped microlens arrays to the beam shaping system. These are non-regular arrays consisting of individually shaped lenses defined by a parametric description which can be derived completely from analytical functions. The advantages of the new concept and design rules are presented.en620621journal article