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31 May 2012 Laser designator protection filter for see-spot thermal imaging systems
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Abstract
In some cases the FLIR has an open window in the 1.06 micrometer wavelength range; this capability is called 'see spot' and allows seeing a laser designator spot using the FLIR. A problem arises when the returned laser energy is too high for the camera sensitivity, and therefore can cause damage to the sensor. We propose a non-linear, solid-state dynamic filter solution protecting from damage in a passive way. Our filter blocks the transmission, only if the power exceeds a certain threshold as opposed to spectral filters that block a certain wavelength permanently. In this paper we introduce the Wideband Laser Protection Filter (WPF) solution for thermal imaging systems possessing the ability to see the laser spot.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ariela Donval, Tali Fisher, Ofir Lipman, and Moshe Oron "Laser designator protection filter for see-spot thermal imaging systems", Proc. SPIE 8353, Infrared Technology and Applications XXXVIII, 835324 (31 May 2012); https://doi.org/10.1117/12.916966
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