Integrated structured illumination concepts by complex optical 3d-printing

Two-photon direct laser writing, i.e., optical 3d-printing, enables the realization of complex micro-optical structures, e.g., combined micro-freeforms with embedded diffractive surface-profiles or complex aspherical multi-lens assemblies. This opens up novel degrees of freedom in the design and realization of micro-optical systems and in this presentation we discuss how these capabilities can be used to overcome challenges for the miniaturization and integration of structured illumination concepts. To this end, monolithically integrated beam shaping and projection solutions will be discussed both from a conceptual and technological point of view. Particular emphasis is placed on an as-build performance optimization of these systems. Moreover, process optimization steps to reduce required printing time and/or process complexity will be discussed. This provides the means to realize complex illumination patterns in an integrated and mechanically flexible approach and can pave the way for novel approaches in structured light microscopy or fringe projection profilometry.