https://doi.org/10.1051/epjconf/202226602001
Design and realization of a miniaturized high resolution computed tomography imaging spectrometer
1 University of Stuttgart, Institut für Technische Optik, 70569 Stuttgart, Germany
2 Sony Europe B.V, Stuttgart Technology Center, 70327 Stuttgart, Germany
* e-mail: amann@ito.uni-stuttgart.de
Published online: 13 October 2022
The computed tomography imaging spectrometer (CTIS) is a relatively unknown snapshot hyperspectral camera. It utilizes computational imaging approaches to gain the hyperspectral image from a spatiospectral smeared sensor image. We present a strongly miniaturized system with a dimension of only 36mm x 40.5mm x 52.8mm and a diagonal field of view of 29°. We achieve this using a Galilean beam expander and a combination of off-the-shelf lenses, a highly aspherical imaging system from a commercial smartphone and a 13 MP monochrome smartphone image sensor. The reconstructed hyperspectral image has a spatial resolution of 400 x 300 pixel with 39 spectral channels.
© The Authors, published by EDP Sciences
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