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Sensors 2015, 15(1), 792-802; doi:10.3390/s150100792

Automatic Laser Glare Suppression in Electro-Optical Sensors

Fraunhofer Institute of Optronics, System Technologies and Image Exploitation IOSB, Gutleuthausstr. 1, 76275 Ettlingen, Germany
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Received: 12 November 2014 / Accepted: 25 December 2014 / Published: 5 January 2015
(This article belongs to the Section Physical Sensors)
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Abstract

Progress in laser technology has led to very compact but nevertheless powerful laser sources. In the visible and near infrared spectral region, lasers of any wavelength can be purchased. Continuous wave laser sources pose an especially serious threat to the human eye and electro-optical sensors due to their high proliferation and easy availability. The manifold of available wavelengths cannot be covered by conventional safety measures like absorption or interference filters. We present a protection concept for electro-optical sensors to suppress dazzling in the visible spectral region. The key element of the concept is the use of a digital micromirror device (DMD) in combination with wavelength multiplexing. This approach allows selective spectral filtering in defined regions of interest in the scene. The system offers the possibility of automatic attenuation of dazzling laser radiation. View Full-Text
Keywords: laser dazzling; sensor protection; spatial light modulator; wavelength multiplexing laser dazzling; sensor protection; spatial light modulator; wavelength multiplexing
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ritt, G.; Eberle, B. Automatic Laser Glare Suppression in Electro-Optical Sensors. Sensors 2015, 15, 792-802.

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