Abstract

In this Letter, a novel snapshot spectral imaging technique, optically replicating and remapping imaging spectrometer, is presented. It is based on the combination of shifting subimages by a specially designed lenslet array (LA) and filtering subimages by a focal plane continuous variable filter (CVF). The 3D datacube is recovered by just using a simple image remapping process. The use of the LA and the focal plane CVF makes the system compact and low in cost. A handheld proof-of-principle prototype has been built and demonstrated; it covers a wavelength range of 380–860 nm with 80 spectral channels with a spatial resolution of 400×400pixels.

© 2019 Optical Society of America

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References

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Supplementary Material (3)

NameDescription
» Visualization 1       Visualization 1 for the total 80 remapped spectral videos.
» Visualization 2       Visualization 2 for the original 80 spatio-spectral gray subimages captured at video rate.
» Visualization 3       Visualization 3 for one of the original 80 spatio-spectral gray subimages captured at video rate.

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