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18 May 2006 Recent progress on multidomain optimization for ultrathin cameras
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Conventional imaging systems can suffer from significant aliasing and/or blur distortions when the detector array in the focal plane under-samples the image. We propose to address this problem by engineering the optical PSF of the imaging system followed by electronic post-processing to minimize the overall distortions. The optical PSF of the candidate imaging system is modified by placing a phase-mask in its aperture-stop. We consider a particular parameterization of the phase-mask and optimize its parameters to minimize the distortions. We obtain as much as 30% improvement in the final imaging quality with the optimized optical PSF imager (SPEL) relative to the conventional imager.
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Amit Ashok and Mark A. Neifeld "Recent progress on multidomain optimization for ultrathin cameras", Proc. SPIE 6232, Intelligent Integrated Microsystems, 62320N (18 May 2006);

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