28 May 2024Compact snapshot hyperspectral imaging instrument in the visible/near-infrared spectral band using CMOS sensor with integrated 4-directional wire grid polarizer array
Matthieu Porte, Yann Ferrec, Frédéric Bernard, Elisa Baldit, Nicolas Guerineau
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Acquiring a hyperspectral image in a single frame enables the acquisition of fast phenomena (relatively to the whole acquisition time). One way to achieve such a snapshot configuration is to combine an interferometer and a lenslet array. A hyperspectral instrument using a birefringent interferometer operating in the visible/near-infrared wavelength band [500 nm: 850 nm] is presented. It has the advantages of being compact as the interferometer is placed close to the focal plane array. Additionally, we use a 4-directional wire grid polarizer array integrated to the focal plane array: such a device enables the measurement of the two complementary interferograms and of a fringe-free image in a single acquisition, which facilitates the spectral image reconstruction.
Conference Presentation
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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