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- W2062492273 abstract "We discuss two types of optical processing using vortex-producing angular phase plates. In the most common spatial-filtering operation, an input object is Fourier transformed (either by Fraunhofer diffraction or with a lens system). The Fourier transform is then multiplied by an angular phase pattern, and the product is again Fourier transformed. The output is a space-invariant, edge-enhanced version of the input object. Alternatively we can directly image the object using a lens multiplied by the angular phase. The space-variant image is severely distorted along the optical axis of the system. We encode the phase plates onto a liquid-crystal display and present experimental results on both systems." @default.
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- W2062492273 date "2004-02-20" @default.
- W2062492273 modified "2023-10-05" @default.
- W2062492273 title "Optical processing with vortex-producing lenses" @default.
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- W2062492273 doi "https://doi.org/10.1364/ao.43.001360" @default.
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