New microslice technology for hyperspectral imaging

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Abstract

We present the results of a project to develop a proof of concept for a novel hyperspectral imager based on the use of advanced micro-optics technology. The technology gives considerably more spatial elements than a classic pushbroom which translates into far more light being integrated per unit of time. This permits us to observe at higher spatial and/or spectral resolution, darker targets and under lower illumination, as in the early morning. Observations of faint glow at night should also be possible but need further studies. A full instrument for laboratory demonstration and field tests has now been built and tested. It has about 10,000 spatial elements and spectra 150 pixel long. It is made of a set of cylindrical fore-optics followed by a new innovative optical system called a microslice Integral Field Unit (IFU) which is itself followed by a standard spectrograph. The fore-optics plus microslice IFU split the field into a large number of small slit-like images that are dispersed in the spectrograph. Our goal is to build instruments with at least hundreds of thousands of spatial elements. © 2013 by the authors; licensee MDPI, Basel, Switzerland.

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Content, R., Blake, S., Dunlop, C., Nandi, D., Sharples, R., Talbot, G., … Luke, P. (2013). New microslice technology for hyperspectral imaging. Remote Sensing, 5(3), 1204–1219. https://doi.org/10.3390/rs5031204

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