Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 8, 2013
|
|
---|---|---|
Article Number | 13008 | |
Number of page(s) | 6 | |
DOI | https://doi.org/10.2971/jeos.2013.13008 | |
Published online | 31 January 2013 |
Regular papers
Passive scene imaging of absorbing gases by narrowband dielectric filter modulation
L-3 TRL Technology, Unit 19 Miller Court, Severn Drive, Tewkesbury, Gloucestershire, GL20 8DN, United Kingdom
Received:
22
October
2012
Revised:
26
November
2012
This paper examines a method for locating within a scene a distribution of an absorbing gas using a passive imaging technique. An oscillatory modulation of the angle of a narrowband dielectric filter located in front of a camera imaging a scene, gives rise to an intensity modulation that differs in regions occupied by the absorbing gas. A preliminary low cost system has been constructed from readily available components which demonstrates how the location of gas within a scene can be implemented. Modelling of the system has been carried out, especially highlighting the transmission effects of the dielectric filter upon different regions of the image.
Key words: Absorption / spectral imaging / modulation
© The Author(s) 2013. All rights reserved.
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