Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"optical transfer function"”.
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An optical/digital incoherent image processing system for an extended depth of field
… incoherent system has isolated zeros in its optical transfer function(OTF); therefore, an exact inverse filtering cannot be performed. It has been established that, by using an annular aperture in an optical system, the depth of focus can be extended. Isolated zeros in the OTF can therefore …
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Investigation of real-time optical scanning holography
Real-time holographic recording using an optical heterodyne scanning technique was proposed by Poon in 1985. The first part of this dissertation provides a detailed theoretical treatment of the technique, based on a Gaussian beam analysis. Topics to be addressed include the derivations of the …
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Twin-image problems in optical scanning holography
Real-time optical scanning holography, which was first suggested by Poon and Korpel, was originally analyzed by Poon using an optical transfer function approach. The recording of holographic information using the optical heterodyne scanning technique has several advantages over conventional …
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Towards the Advancement of Rotating Synthetic Aperture Space Telescope Technology
Optical imagery of the Earth from space-based telescopes is one of the most valuable tools for understanding various large and small-scale processes. Value is derived from the unique observing perspective on orbit, which has enabled an expansive list of new science from the discovery of the ancient …
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Theoretical and experimental assessment of the optical response of planar microlens arrays
… to develop a theoretical method to estimate the optical properties and response of a homogenous, apposition microlens array. While other similar studies of microlens arrays have been performed, none were found to determine the total field of view, overlap in the field of view nor the estimated …