A compact combined hyperspectral and polarimetric imager

Torbjørn Skauli; Pål Erik Goa; Ivar Baarstad; Trond Løke

doi:10.1117/12.693484

5 October 2006 A compact combined hyperspectral and polarimetric imager

Torbjørn Skauli, Pål Erik Goa, Ivar Baarstad, Trond Løke

Author Affiliations +

Proceedings Volume 6395, Electro-Optical and Infrared Systems: Technology and Applications III; 639505 (2006) https://doi.org/10.1117/12.693484
Event: Optics/Photonics in Security and Defence, 2006, Stockholm, Sweden

Abstract

Spectroscopic and polarimetric imaging have an increasing range of applications in remote sensing as well as inspection systems. It is shown how a limited polarimetric imaging capability can be added to a conventional hyperspectral camera based on a transmission grating imaging spectrometer. This is done by utilizing the undiffracted part of the light and separating its focus at the detector into two components using a simple walkoff plate composite. The resulting camera has full hyperspectral capability in the visible and near infrared spectral range, and in addition it forms broadband images for two orthogonal linear polarizations. Example imaging results are given and it is shown how polarimetric information can be used to detect manmade objects in a natural scene. A discussion of the limitations of the system is given.

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Torbjørn Skauli, Pål Erik Goa, Ivar Baarstad, and Trond Løke "A compact combined hyperspectral and polarimetric imager", Proc. SPIE 6395, Electro-Optical and Infrared Systems: Technology and Applications III, 639505 (5 October 2006); https://doi.org/10.1117/12.693484

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