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C1.4 Mobile Near Infrared Spectrometer with a MEMS-FPI Sensor

Introduction Currently just a few mobile NIR spectrometers are available on the market. These devices focus on use in quality control for agriculture and food industry as well as in the recycling sector [1, 2]. Presented spectrometer was built during a bachelor thesis project with the main goal to develop a low cost hand-held device for measuring reflection Spectra in NIR region in combination with a smartphone or a PC. As the spectrum sensor a Hamamatsu MEMS-FPI (Fabri-Perot Interferometer) was chosen [3]; the manufacturer proposes it for applications like screening of plastics and textiles, moisture detection and ingredient analysis of food. Starting from the 3rd quarter of 2020 Hamamatsu also offers complete spectroscopic modules with MEMS-FPI spectrum sensors [4].