Portable computed-tomography imaging spectrometer

Curtis Earl Volin; Tim M. Gleeson; Michael R. Descour; Eustace L. Dereniak

doi:10.1117/12.258068

13 November 1996 Portable computed-tomography imaging spectrometer

Curtis Earl Volin, Tim M. Gleeson, Michael R. Descour, Eustace L. Dereniak

Proceedings Volume 2819, Imaging Spectrometry II; (1996) https://doi.org/10.1117/12.258068
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

We have constructed a portable computed tomography imaging spectrometer (CTIS) based on a previous laboratory-bench version. This spectrometer features a computer-generated phase-only hologram as the dispersive element and collects spatial and spectral data from the diffracted orders. CTIS is capable of flash spectral imaging. Reconstruction of the image cube from raw data is achieved by computed-tomography techniques. Other improvements from the original design include a more modular design, an automated and more precise calibration technique, and the inclusion of constraints in the image cube reconstruction. Reconstruction results compare favorably with measurements by a fiber spectrometer. Keywords: Imaging spectrometry, computed tomography, flash spectral imaging.

Citation Download Citation

Curtis Earl Volin, Tim M. Gleeson, Michael R. Descour, and Eustace L. Dereniak "Portable computed-tomography imaging spectrometer", Proc. SPIE 2819, Imaging Spectrometry II, (13 November 1996); https://doi.org/10.1117/12.258068

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