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Proceedings Paper

Protection concepts for optronical sensors against laser radiation
Author(s): Gunnar Ritt; Bernd Eberle
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Paper Abstract

The rapid developments in the laser field through the last years led to very compact laser devices with high brightness. In the visual and near infrared spectral range practically each wavelength is now available. For optronical sensors, laser radiation states an increasing threat that cannot be encountered just by conventional safety measures like absorption or interference filters. We present a concept to protect imaging sensors against laser radiation of any wavelength. The system is based on the combination of a spatial light modulator and wavelength multiplexing and allows selective spectral filtering in a defined region of interest in the scene. Such a system offers the possibility to suppress annoying laser radiation without losing spatial information in the region of interest. Depending on the used imaging sensor, we discuss different ways to realize a control loop to activate the appropriate pixels of the spatial light modulator for the attenuation of the laser light.

Paper Details

Date Published: 28 September 2011
PDF: 12 pages
Proc. SPIE 8185, Electro-Optical and Infrared Systems: Technology and Applications VIII, 81850G (28 September 2011); doi: 10.1117/12.897700
Show Author Affiliations
Gunnar Ritt, Fraunhofer Institute of Optronics, System Technologies and Image Exploitation (Germany)
Bernd Eberle, Fraunhofer Institute of Optronics, System Technologies and Image Exploitation (Germany)


Published in SPIE Proceedings Vol. 8185:
Electro-Optical and Infrared Systems: Technology and Applications VIII
David A. Huckridge; Reinhard R. Ebert, Editor(s)

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