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 9 of 9 for “"lens array"”.
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Micro-forging technique for rapid, low-cost manufacture of lens array molds and its application in a biomedical instrument
… low-cost fabrication techniques. Most micro-lens fabrication processes are unsuitable for applications requiring 100% fill factor, apertures around 1 mm, and scalability to large areas with millions of lenses. A flexible, low-cost mold fabrication technique that utilizes a combination of …
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Numerical modeling and ray tracing of SPatIal Frequency modulation for Imaging
… software for configurations involving achromatic lenses, flat field lenses, and a specialized lens array setup. Lastly, a unique SPIFI design setup is presented making use of a reflective scanned SPIFI mask to achieve random access imaging using three distinct spots for simultaneous imaging.
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Ultra thin micro solar cells with concentration optics: fabrication, modeling and characterization
… for certain applications. A micro solar cell array module was thus developed to overcome these limitations and provide a cheap and compact solution. By miniaturizing the solar cells to produce micro-scale solar cells, several advantages can be achieved. The micro solar cell enables a …
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Design and Development of Planar Antennas and Dielectric Devices for use at W Band Frequencies
… focal plane pixels (planar antenna with small lenses) was part of the research in this work package. Several planar antenna designs are modelled and optimised in CST Studio Microwave Suite, a commercially available computer modelling software used extensively in order to predict the device …
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Holographic Spectrum-Splitting Design for Micro-Concentrating Photovoltaic Applications
… of spectrum-splitting and micro concentrating array, and are expected to obtain a high system power conversion efficiency and energy yield in a compact module. The methodology for designing and optimizing the geometrical configuration, holographic filters, and lens array are described in detail …
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High quality optical and optoelectronic materials for efficient light management and solar spectrum control and conversion
… are then explored that implement traditional lenses for concentration of direct light at high concentration ratios. Collection of diffuse light is then achieved through a luminescent solar concentrator (LSC) in the backplane of the lens array, contributing to additional achievable power on …
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Development of a nano-precision ruling engine for machining of freeform micro-scale optical surfaces
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-05-01
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Theoretical and experimental assessment of the optical response of planar microlens arrays
… 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 maximum resolution when using a broadband illumination source based …
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Opto-VLSI-based adaptive optical power splitter/combiner for next generation dynamic optical telecommunication networks
… on an Opto-VLSI processor, a fibre collimator array and 4-f imaging systems (single lens), (ii) a 1×4 adaptive optical power splitter based on an Opto-VLSI processor, a fibre array and 4-f imaging systems (single lens), and (iii) a 1×N lossless adaptive optical power splitter structure …