New possibilities for macroscopic imaging in test laboratories – Modern light field objective lenses serving as the basis for large-scale 3D topography reconstruction and quantification

Abstract

Abstract Representative macroscopic images of a sample are an integral part of many material testing methods. Usually, a digital camera attached to a macro stand is used. Recurring problems include reflections from the surface of the sample or the fact that regular 2D representations of fracture surfaces, for example, do not always permit a correct interpretation at a later point. In this study, a novel objective lens from K|Lens GmbH, capable of recording the depth information of the surface with a digital camera in a single shot and enabling three-dimensional reconstruction will be used to evaluate potential applications. Furthermore, application limits in macroscopic imaging and the analysis of typical metallographic samples, with the focus being on three-dimensional imaging and quantification, will be studied.