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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 11 — Jun. 1, 2014
  • pp: 3169–3172

Extra-thin infrared camera for low-cost surveillance applications

Tatiana Grulois, Guillaume Druart, Nicolas Guérineau, Arnaud Crastes, Hervé Sauer, and Pierre Chavel  »View Author Affiliations

Optics Letters, Vol. 39, Issue 11, pp. 3169-3172 (2014)

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We designed a cheap broadband uncooled microimager operating in the long-wavelength infrared range using only one lens at a minimal cost for the manufacturing process. The approach is based on thin optics where the device volume is small and therefore inexpensive materials can be used because some absorption can be tolerated. We have used a Fresnel lens on a thin silicon substrate. Up to now, Fresnel lenses have not been used for broadband imaging because of their chromatic properties. However, working in a relatively high diffraction order can significantly reduce chromatism. A prototype has been made for short range or indoor low-cost surveillance applications like people counting, and experimental images are presented.

© 2014 Optical Society of America

OCIS Codes
(110.0110) Imaging systems : Imaging systems
(110.6820) Imaging systems : Thermal imaging
(120.3620) Instrumentation, measurement, and metrology : Lens system design
(220.0220) Optical design and fabrication : Optical design and fabrication
(050.1965) Diffraction and gratings : Diffractive lenses

ToC Category:
Imaging Systems

Original Manuscript: February 25, 2014
Revised Manuscript: March 26, 2014
Manuscript Accepted: March 26, 2014
Published: May 21, 2014

Tatiana Grulois, Guillaume Druart, Nicolas Guérineau, Arnaud Crastes, Hervé Sauer, and Pierre Chavel, "Extra-thin infrared camera for low-cost surveillance applications," Opt. Lett. 39, 3169-3172 (2014)

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