MICROCARD: a micro-camera based on a circular diffraction grating for MWIR and LWIR imagery - art. no. 71001N - Archive ouverte HAL Access content directly
Conference Papers Proceedings of SPIE, the International Society for Optical Engineering Year : 2008

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

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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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Dates and versions

hal-00701528 , version 1 (25-05-2012)

Identifiers

  • HAL Id : hal-00701528 , version 1

Cite

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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