Kapitel/Beitrag aus dem Buch: Längle, T et al. 2019. OCM 2019 – 4th International Conference on Optical Characterization of Materials, March 13th – 14th, 2019, Karlsruhe, Germany : Conference Proceedings.
In this study, we present a new optical non-contact measurement method, which is based on general characteristics of a flying-spot scanner. The focus is on the mapping of lipid-based substances, especially the scanning of fingerprints. The assessing of human fingerprints is conducted by using two lasers emitting in different selected wavelengths. Images generated by using these wavelengths comprise absorption information of the examined sample. By using image-processing and conversion algorithms, the lipid-based substances in the detected image section could not only be captured, but also displayed three-dimensionally. The setup of the optical scanning method presented here utilizes the mid infrared region, especially the wavelength range between 3 μm up to 4 μm. It was optimized in order to scan an area up to 50 cm2, with a spatial resolution of 20 μm and a data rate of 300 kS/s. Our data shows that mapping of human fingerprints can be performed by using the described method. Furthermore, a processing of the data set results in topographical information.
Kümmel, T et al. 2019. Absorption properties of lipid-based substances by non-invasive fast mid-infrared imaging. In: Längle, T et al (eds.), OCM 2019 – 4th International Conference on Optical Characterization of Materials, March 13th – 14th, 2019, Karlsruhe, Germany : Conference Proceedings. Karlsruhe: KIT Scientific Publishing. DOI: https://doi.org/10.58895/ksp/1000087509-3
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Veröffentlicht am 18. März 2019