In-process dimensional and geometrical characterization of laser-powder bed fusion lattice structures through high-resolution optical tomography

•Demonstrated the effectiveness of High-resolution Optical Tomography as a novel technique for in process monitoring of l-PBF lattice structures.•Geometrical analysis of strut thickness and waviness.•In process computation of 2d deviation between nominal and actual layer contour.•3D reconstruction of external and internal feature comparable with XCT data.•Detection of superelevated areas by analysing pixel intensity.