Digital in-line holography in thick optical systems: application to visualization in pipes
Digital in-line holography in thick optical systems: application to visualization in pipes
In this paper we apply digital in-line holography to image opaque objects through a thick plano-concave pipe. Opaque fibers and opaque particles are considered}. Analytical expression of the intensity distribution in the CCD sensor plane is derived using generalized Fresnel transform. \textbf{The proposed model has the ability to deal with various pipe shape and thickness and compensates for the lack of versatility of classical DIH models. Holograms obtained with a 12 mm thick plano-concave pipe are then reconstructed using fractional Fourier transform (FRFT).} This method allows us to get rid of astigmatism. Numerical and experimental results are presented.
Co?tmellec S¨|bastien、Lebrun Denis、Brunel Marc、Nicolas Verrier
CORIACORIACORIACORIA
光电子技术物理学
Co?tmellec S¨|bastien,Lebrun Denis,Brunel Marc,Nicolas Verrier.Digital in-line holography in thick optical systems: application to visualization in pipes[EB/OL].(2012-12-20)[2025-08-18].https://arxiv.org/abs/1212.5040.点此复制
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