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MICROCARD: a micro-camera based on a circular diffraction grating for MWIR and LWIR imagery - art. no. 71001N

Abstract : Circular diffraction gratings (also called diffractive axicons) are optical components producing achromatic non-diffracting beams. They thus produce a, focal line rather than a focal point for classical lenses. We have recently shown in the visible spectral range that this property can be used to design a simple imaging system with a long depth of focus and a linear variable zoom by using and translating a, diffractive axicon as the only component. We have then adapted this principle for the mid-wavelength infrared (MWIR) spectral range and the long-wavelength infrared (LWIR) spectral range. A LWIR low-cost micro-camera, called MICROCARD, has been designed and realized. First images from this camera will be shown. Moreover a way to design a, compact MWIR micro-camera, with moveable parts integrated directly into the cryostat will be presented.
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https://hal-iogs.archives-ouvertes.fr/hal-00701528
Contributor : Jean Taboury <>
Submitted on : Friday, May 25, 2012 - 3:33:04 PM
Last modification on : Wednesday, September 16, 2020 - 5:37:35 PM

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  • HAL Id : hal-00701528, version 1

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Guillaume Druart, Nicolas Guérineau, Michel Tauvy, Sylvain Rommeluère, Jérôme Primot, et al.. MICROCARD: a micro-camera based on a circular diffraction grating for MWIR and LWIR imagery - art. no. 71001N. Conference on Unconventional Imaging III, Sep 2008, Glasgow, SCOTLAND, United Kingdom. pp.N1001. ⟨hal-00701528⟩

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