Wideband protection filter (WPF) integrated within optical systems

G. Ritt; B. Eberle; R. Ebert; T. Fisher; B. Nemet; M. Oron; A. Donval

doi:10.1117/12.799980

2 October 2008 Wideband protection filter (WPF) integrated within optical systems

G. Ritt, B. Eberle, R. Ebert, T. Fisher, B. Nemet, M. Oron, A. Donval

Proceedings Volume 7113, Electro-Optical and Infrared Systems: Technology and Applications V; 71130Y (2008) https://doi.org/10.1117/12.799980
Event: SPIE Security + Defence, 2008, Cardiff, Wales, United Kingdom

Abstract

Laser radiation may lead to permanent damage of the human eye when it is exposed to high power irradiation, especially when using magnifying optics such as binoculars, sights or periscopes. Into such an optical system we integrated a novel passive solid-state threshold-triggered Wideband Protection Filter (WPF) that blocks the transmission only if the power exceeds a certain threshold. At input powers below threshold, the filter has high transmission over the whole spectral band. However, when the input power exceeds the threshold power, transmission is decreased dramatically. We demonstrate the WPF integration within a typical optical system and the influence of system parameters on the protection capability of the filter.

Citation Download Citation

G. Ritt, B. Eberle, R. Ebert, T. Fisher, B. Nemet, M. Oron, and A. Donval "Wideband protection filter (WPF) integrated within optical systems", Proc. SPIE 7113, Electro-Optical and Infrared Systems: Technology and Applications V, 71130Y (2 October 2008); https://doi.org/10.1117/12.799980

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