19 September 2014 Optical design and characterization of an advanced computational imaging system
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We describe an advanced computational imaging system with an optical architecture that enables simultaneous and dynamic pupil-plane and image-plane coding accommodating several task-specific applications. We assess the optical requirement trades associated with custom and commercial-off-the-shelf (COTS) optics and converge on the development of two low-cost and robust COTS testbeds. The first is a coded-aperture programmable pixel imager employing a digital micromirror device (DMD) for image plane per-pixel oversampling and spatial super-resolution experiments. The second is a simultaneous pupil-encoded and time-encoded imager employing a DMD for pupil apodization or a deformable mirror for wavefront coding experiments. These two testbeds are built to leverage two MIT Lincoln Laboratory focal plane arrays – an orthogonal transfer CCD with non-uniform pixel sampling and on-chip dithering and a digital readout integrated circuit (DROIC) with advanced on-chip per-pixel processing capabilities. This paper discusses the derivation of optical component requirements, optical design metrics, and performance analyses for the two testbeds built.
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R. Hamilton Shepard, R. Hamilton Shepard, Christy Fernandez-Cull, Christy Fernandez-Cull, Ramesh Raskar, Ramesh Raskar, Boxin Shi, Boxin Shi, Christopher Barsi, Christopher Barsi, Hang Zhao, Hang Zhao, } "Optical design and characterization of an advanced computational imaging system", Proc. SPIE 9216, Optics and Photonics for Information Processing VIII, 92160A (19 September 2014); doi: 10.1117/12.2060725; https://doi.org/10.1117/12.2060725

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