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Optical Engineering • Open Access

Technique for passive scene imaging of gas and vapor plumes using transmission-waveband modulation
Author(s): David M. Benton

Paper Abstract

A new approach to locating gas and vapor plumes is proposed that is entirely passive. By modulating the transmission waveband of a narrow-band filter, an intensity modulation is established that allows regions of an image to be identified as containing a specific gas with absorption characteristics aligned with the filter. A system built from readily available components was constructed to identify regions of NO2. Initial results show that this technique was able to distinguish an absorption cell containing NO2 gas in a test scene.

Paper Details

Date Published: 4 May 2012
PDF: 3 pages
Opt. Eng. 51(5) 050501 doi: 10.1117/1.OE.51.5.050501
Published in: Optical Engineering Volume 51, Issue 5
Show Author Affiliations
David M. Benton, TRL Technology (United Kingdom)

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