Smart filters: from VIS/NIR to MW/LWIR protection

Ariela Donval; Tali Fisher; Ofir Lipman; Moshe Oron

doi:10.1117/12.2049601

24 June 2014 Smart filters: from VIS/NIR to MW/LWIR protection

Ariela Donval, Tali Fisher, Ofir Lipman, Moshe Oron

Proceedings Volume 9070, Infrared Technology and Applications XL; 90700R (2014) https://doi.org/10.1117/12.2049601
Event: SPIE Defense + Security, 2014, Baltimore, MD, United States

Abstract

New development of imaging systems implies the use of multi band wavelength, VIS and IR, for imaging enhancement and more data presenting. Some of those systems, such as <see spot<, are designed for applications requiring in plus, the ability to see the aiming point of a laser designator. The use of a designating laser to assist in target identification and tracking can unintentionally result in a laser beam reflected back into the sensor, leading to transient dazzling or permanent damage of the sensor. We propose a novel passive Wideband Protection Filter (WPF) that blocks the transmission only if the power exceeds a certain threshold. We present a special design of WPF suitable for dual- and multi- band wavelength range, including transmission and functionality performances. We demonstrate a new design transferring our WPF filter from VIS/NIR into the MW/LWIR.

Citation Download Citation

Ariela Donval, Tali Fisher, Ofir Lipman, and Moshe Oron "Smart filters: from VIS/NIR to MW/LWIR protection", Proc. SPIE 9070, Infrared Technology and Applications XL, 90700R (24 June 2014); https://doi.org/10.1117/12.2049601

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