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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 36, Iss. 3 — Feb. 1, 2011
  • pp: 418–420

Real-time increase in depth of field of an uncooled thermal camera using several phase-mask technologies

Frédéric Diaz, Mane-Si Laure Lee, Xavier Rejeaunier, Gaelle Lehoucq, François Goudail, Brigitte Loiseaux, Shailendra Bansropun, Joel Rollin, Eric Debes, and Philippe Mils  »View Author Affiliations


Optics Letters, Vol. 36, Issue 3, pp. 418-420 (2011)
http://dx.doi.org/10.1364/OL.36.000418


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Abstract

Imaging systems that combine a phase mask in the pupil and digital postprocessing may have better performance than conventional ones. We have built such a system to enhance the depth of field of an uncooled thermal camera. The phase masks are binary, their structures are optimized thanks to an image quality criterion, and they have been realized with three different technologies that give equivalent results. The deconvolution postprocessing is performed in real time with a graphics processing unit. A significant increase of the depth of field of a factor 3 has been obtained.

© 2011 Optical Society of America

OCIS Codes
(100.1830) Image processing : Deconvolution
(110.3080) Imaging systems : Infrared imaging
(050.6624) Diffraction and gratings : Subwavelength structures
(110.7348) Imaging systems : Wavefront encoding

ToC Category:
Imaging Systems

History
Original Manuscript: October 29, 2010
Revised Manuscript: January 4, 2011
Manuscript Accepted: January 5, 2011
Published: February 1, 2011

Citation
Frédéric Diaz, Mane-Si Laure Lee, Xavier Rejeaunier, Gaelle Lehoucq, François Goudail, Brigitte Loiseaux, Shailendra Bansropun, Joel Rollin, Eric Debes, and Philippe Mils, "Real-time increase in depth of field of an uncooled thermal camera using several phase-mask technologies," Opt. Lett. 36, 418-420 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-3-418

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