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8 September 2011 Imaging properties of different refractive axicons
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Proceedings Volume 8007, Photonics North 2011; 80070Y (2011)
Event: Photonics North 2011, 2011, Ottawa, Canada
The extended depth of field of axicons is an advantage for imaging applications but comes with a degradation of image quality. Image processing is proposed to solve this problem. In the present work, three types of refractive axicons are examined for imaging applications: a linear axicon, a logarithmic axicon and a Fresnel axicon. Each one has its own advantages: a linear axicon is simple, the Fresnel axicon is compact and has a potential low cost of production and the logarithmic axicon generates nearly constant longitudinal intensity distribution which might ensure a more uniform image quality along the focal length. Preliminary experimental measurements of the Point Spread Function (PSF) for each one of these axicons were performed and are used to design digital filters to de-noise the images.
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Andrew Saikaley, Sofia Matoug, Ilya Golub, and Brahim Chebbi "Imaging properties of different refractive axicons", Proc. SPIE 8007, Photonics North 2011, 80070Y (8 September 2011);

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