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Proceedings Paper

Visible Stokes imaging using programmable waveplate based on PLZT ceramic
Author(s): Sebastien Breugnot; Philippe Clemenceau; Maxence De Geuser; Bruno Pouet
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Paper Abstract

Along with intensity and spectrum, the polarization of light carries abundant information. Polarization imaging has established strong interest for visual appearance measurement, based on its ability to analyze scattered light and for defense applications, thanks to its performances in term of object detection/identification. Image contrast enhancement and information on the objects (natural, man-made, detection of water bodies, 3D shape...) composing the scene can also be derived from the polarization analysis. In this paper, we will present an innovative polarization component based on ceramic PLZT and its integration in an imaging system. It will lead to a passive polarization camera that will measure the 4 Stokes parameters for each pixel of the image, in real-time, without any mechanical rotation and at high frame per second. Based on PLZT ceramic, we will present the design and the manufacturing of a rotatable and programmable waveplate. It will be the key component of a passive polarization imaging system. The component will be optimized, fabricated and integrated into a passive polarization camera. The performances of the polarization camera will be demonstrated in the laboratory. Measurement of Stokes vector for each pixel of the image will allow precise polarization measurement, leading to accurate analysis of the scattered light. Various parameters (gloss, color...) and images (polarization degree, surface scattering, volume scattering...) will be calculated from the Stokes parameters.

Paper Details

Date Published: 3 May 2006
PDF: 12 pages
Proc. SPIE 6240, Polarization: Measurement, Analysis, and Remote Sensing VII, 62400I (3 May 2006);
Show Author Affiliations
Sebastien Breugnot, Bossa Nova Technologies (United States)
Philippe Clemenceau, Bossa Nova Technologies (United States)
Maxence De Geuser, Bossa Nova Technologies (United States)
Bruno Pouet, Bossa Nova Technologies (United States)

Published in SPIE Proceedings Vol. 6240:
Polarization: Measurement, Analysis, and Remote Sensing VII
Dennis H. Goldstein; David B. Chenault, Editor(s)

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