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Design and realization of a miniaturized high resolution computed tomography imaging spectrometer

Authors :
Amann Simon
Haist Tobias
Gatto Alexander
Kamm Markus
Herkommer Alois
Source :
Journal of the European Optical Society-Rapid Publications, Vol 19, Iss 2, p 34 (2023)
Publication Year :
2023
Publisher :
EDP Sciences, 2023.

Abstract

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.

Details

Language :
English
ISSN :
19902573
Volume :
19
Issue :
2
Database :
Directory of Open Access Journals
Journal :
Journal of the European Optical Society-Rapid Publications
Publication Type :
Academic Journal
Accession number :
edsdoj.f0941cf9f3234b0d8365d9ca46a8a1fc
Document Type :
article
Full Text :
https://doi.org/10.1051/jeos/2023027