| Issue |
J. Eur. Opt. Society-Rapid Publ.
Volume 19, Number 2, 2023
EOSAM 2022
|
|
|---|---|---|
| Article Number | 34 | |
| Number of page(s) | 6 | |
| DOI | https://doi.org/10.1051/jeos/2023027 | |
| Published online | 19 June 2023 | |
Research Article
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
* Corresponding author: amann@ito.uni-stuttgart.de
Received:
25
January
2023
Accepted:
28
April
2023
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 spatio-spectral smeared sensor image. We present a strongly miniaturized system with a dimension of only 36 × 40.5 × 52.8 mm 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 × 300 pixel with 39 spectral channels.
Key words: Hyperspectral imaging / Computational imaging / CTIS
© The Author(s), published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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