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Proceedings Paper

Automatic correction of diffraction pattern shift in a pushbroom hyperspectral imager with a piezoelectric internal line-scanning unit
Author(s): Mohammad Abdo; Erik Förster; Patrick Bohnert; Moritz Stürmer; Vlad Badilita; Robert Brunner; Ulrike Wallrabe; Jan G. Korvink
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Paper Abstract

Pushbroom hyperspectral imaging systems require relative motion with respect to the target for hyperspectral data acquisition by means of spatial scanning, which increases the equipment cost and limits the application scenarios. We address this by introducing a pushbroom system with an internal line-scanning unit consisting of a slit aperture mounted on a piezoelectric linear motor. Different slit positions have tilted incidence angles at the grating, resulting in shifts of diffraction patterns relative to the imaging sensor. We demonstrate a method to compensate this shift by using a rotating arm controlled by a stepper motor to reposition the camera based on slit position.

Paper Details

Date Published: 20 February 2017
PDF: 8 pages
Proc. SPIE 10110, Photonic Instrumentation Engineering IV, 1011004 (20 February 2017); doi: 10.1117/12.2248467
Show Author Affiliations
Mohammad Abdo, Karlsruhe Institute of Technology (Germany)
Erik Förster, Univ. of Applied Sciences Jena (Germany)
Patrick Bohnert, Univ. of Applied Sciences Jena (Germany)
Moritz Stürmer, Univ. of Freiburg (Germany)
Vlad Badilita, Karlsruhe Institute of Technology (Germany)
Robert Brunner, Univ. of Applied Sciences Jena (Germany)
Ulrike Wallrabe, Univ. of Freiburg (Germany)
Jan G. Korvink, Karlsruhe Institute of Technology (Germany)


Published in SPIE Proceedings Vol. 10110:
Photonic Instrumentation Engineering IV
Yakov G. Soskind; Craig Olson, Editor(s)

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