Jacobs ATSS

Aberdeen Proving Ground, MD, United States

Jacobs ATSS

Aberdeen Proving Ground, MD, United States
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Mentzer M.A.,U.S. Army | Herr D.A.,Jacobs ATSS | Brewer K.J.,U.S. Army | Ojason N.,Jacobs ATSS | Tarpine H.A.,Jacobs ATSS
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2010

X-ray imaging requires unique optical detector system configuration for optimization of image quality, resolution, and contrast ratio. A system is described whereby x-ray photons from multiple anode sources create a series of repetitive images on fast-decay scintillator screens, from which an intensified image is transferred to a fast phosphor on a GEN II image intensifier and collected as a cineradiographic video with high speed digital imagery. The work addresses scintillator material formulation, flash x-ray implementation, image intensification, and high speed video processing and display. Novel determination of optimal scintillator absorption, x-ray energy and dose relationships, contrast ratio determination, and test results are presented. © 2010 Copyright SPIE - The International Society for Optical Engineering.


Mentzer M.A.,U.S. Army | Ghosh C.L.,Princeton Optronics, Inc. | Guo B.,Princeton Optronics, Inc. | Brewer K.,U.S. Army | And 6 more authors.
Optical Engineering | Year: 2011

Previous laser illumination systems at Aberdeen Proving Ground and elsewhere required complex pulse timing, extensive cooling, large-scale laser systems (frequency-doubled flash-pumped Nd:YAG, Cu-vapor, Q-switched ruby), making them difficult to implement for range test illumination in high speed videography. Requirements to illuminate through the self-luminosity of explosive events motivate the development of a high brightness imaging technique obviating the limitations of previous attempts. A lensed vertical cavity surface-emitting laser array is proposed and implemented with spectral filtering to effectively remove self-luminosity and the fireball from the image, providing excellent background discrimination in a variety of range test scenarios. © 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

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