Miniature MOEMS hyperspectral imager with versatile analysis tools
Trops, R., Hakola, A.-M., Jääskeläinen, S., Näsilä, A., Annala, L., Eskelinen, M., Saari, H., Pölönen, I., & Rissanen, A. (2019). Miniature MOEMS hyperspectral imager with versatile analysis tools. In W. Piyawattanametha, Y.-H. Park, & H. Zappe (Eds.), Proceedings of SPIE Volume 10931 : MOEMS and Miniaturized Systems XVIII; 109310W (Article 109310W). SPIE, The International Society for Optical Engineering. SPIE conference proceedings, 10931. https://doi.org/10.1117/12.2506366
Published inSPIE conference proceedings
© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE).
The Fabry-Perot interferometers (FPI) are essential components of many hyperspectral imagers (HSI). While the Piezo-FPI (PFPI) are still very relevant in low volume, high performance applications, the tunable MOEMS FPI (MFPI) technology enables volume-scalable manufacturing, thus having potential to be a major game changer with the advantages of low costs and miniaturization. However, before a FPI can be utilized, it must be integrated with matching optical assembly, driving electronics and imaging sensor. Most importantly, the whole HSI system must be calibrated to account for wide variety of unwanted physical and environmental effects, that significantly influence quality of hyperspectral data. Another challenge of hyperspectral imaging is the applicability of produced raw data. Typically it is relatively low and an application specific software is necessary to turn data into meaningful information. A versatile analysis tools can help to breach the gap between raw hyperspectral data and the user application. This paper presents a novel HSI hardware platform that is compatible with both MFPI and PFPI technologies. With an MFPI installed, the new imager can have operating range of λ = 600 - 1000 nm with FWHM of 15 - 25 nm and tuning speed of < 2 ms. Similar to previous imager in Ref. 1, the new integrated HSI system is well suited for mobile and cloud based applications due to its small dimensions and connectivity options. In addition to new hardware platform, a new hyperspectral imaging analysis software was developed. The new software used in conjunction with the HSI provides a platform for spectral data acquisition and a versatile analysis tool for a processing raw data into more meaningful information. ...
PublisherSPIE, The International Society for Optical Engineering
Parent publication ISBN978-1-5106-2504-4
Is part of publicationProceedings of SPIE Volume 10931 : MOEMS and Miniaturized Systems XVIII; 109310W
ISSN Search the Publication Forum0277-786X
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