Laser designator protection filter for see-spot thermal imaging systems

Ariela Donval; Tali Fisher; Ofir Lipman; Moshe Oron

doi:10.1117/12.916966

31 May 2012 Laser designator protection filter for see-spot thermal imaging systems

Ariela Donval, Tali Fisher, Ofir Lipman, Moshe Oron

Proceedings Volume 8353, Infrared Technology and Applications XXXVIII; 835324 (2012) https://doi.org/10.1117/12.916966
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

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.

Citation Download Citation

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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