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Low-cost, low-power, disposable infrared markers
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Paper Abstract

Light-weight, low-power consumption, low-cost IR sources are required for combat ID (IFF, identify friend or foe), trail markers, pallet markers, etc. They must be visible with conventional viewers at 200 meters in the 3-5 micron or 8-12 micron bands and emit no visible or near infrared radiation. Ion Optics has tested a prototype MEMS IR source that can meet all of these requirements. It uses a hermetically sealed filament with a photonic crystal-enhanced (PCETM) coating that efficiently generates narrowband IR light. The photonic crystal surface structure limits emission to (tunable) predetermined bands (3-5 and 8-12 microns specifically). These devices generate 10mW of IR light in the 3-5 micron band with "wall-plug" efficiency of 10%, 2 orders of magnitude more efficient than conventional IR LED's. This high efficiency enables overnight battery operation. Using traditional 3-5 micron MWIR cameras, we measured visibility ranges of 200 meters. Current research and development on wafer-level packaging of the MEMS device promises to increase device yield, improve reliability, reduce package size and reduce total cost.

Paper Details

Date Published: 31 May 2005
PDF: 6 pages
Proc. SPIE 5783, Infrared Technology and Applications XXXI, (31 May 2005); doi: 10.1117/12.603961
Show Author Affiliations
Martin Pralle, Ion Optics, Inc. (United States)
Mark McNeal, Ion Optics, Inc. (United States)
Edward Johnson, Ion Optics, Inc. (United States)
Irina Puscasu, Ion Optics, Inc. (United States)
Anton Greenwald, Ion Optics, Inc. (United States)
James Melnyk, Ion Optics, Inc. (United States)

Published in SPIE Proceedings Vol. 5783:
Infrared Technology and Applications XXXI
Bjorn F. Andresen; Gabor F. Fulop, Editor(s)

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