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 20 of 61 for “"Optical design"”.
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Freeform Optical Design Methodologies and Surface Metrology Using Deflectometry
… covers contributions to the fields of optical design and optical testing using freeform optics applied to astronomical optics. A science goal based motivation for why these technologies are important to develop in the context of the next generation of astronomical optics is presented in …
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Optical design guidelines for spectral splitting photovoltaic systems : a sensitivity analysis approach
… into a single system. One approach is to use an optical component to split the solar spectrum and guide high-energy light to absorber materials with a wide band gap and low-energy light to absorbers with a narrower band gap. This thesis uses two-dimensional technology computer aided design (TCAD) …
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Quasi-Optical Design and Analysis of Bolometric Interferometers for Cosmic Microwave Background Experiments
The main topic of this thesis is the quasi-optical analysis of optical systems for experiments used to measure the polarisation anisotropies of the cosmic microwave background. The polarisation signal is so low and difficult to measure that very accurate modelling and a deep understanding and …
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Quasi-Optical Design and Analysis of a Bolometric Interferometer for Cosmic Microwave Background Radiation Experiments
… The author was heavily involved in the design and analysis of the optical combiner here at the Department of Experimental Physics in Maynooth University. This thesis describes the analysis techniques used for the characterisation of the operation of the QUBIC instrument. These …
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Optical and Quasi-Optical Design and Analysis of Astronomical Instrumentation including a Prototype SAFARI Pixel
… of this thesis focuses primarily on the quasi-optical analysis of optical systems in the Terahertz region of the spectrum. This included the development of novel simulation techniques based on the principles of mode matching and gaussian beam mode analysis, which are uniquely suited to the …
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Light source selection and optical design of a UV absorption based detector for liquid chromatography
… compared to traditional sources. We present the optical design for a detector based on a modular LED architecture and employing a digital micromirror device to modulate the light used in detection. The expected capabilities of a detector employing the design are derived and then compared to …
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Optical SNS folding circuit design
… for extending the resolution of an integrated optical multi-interferometer analog-to-digital converter (ADC). These types of ADCs can directly digitize the signals from an antenna and play an important role in eliminating the need for intermediate frequency and baseband processing. With …
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Design consideration, trade-off and performance analysis of a high-resolution optical telescope design for a satellite
… precision farming to defence and security. The design of high resolution payload requires relevant technical expertise, expensive equipment and software. Different aspects of telescopes have been researched separately but process of translation of system requirements into actual optical design …
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SALT spectropolarimetry commissioning
… 320-900 nm, employs a high UV-transmitting optical design to support UV spectroscopy down to the atmospheric cutoff at 320nm (rare on large telescopes).
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Design and analysis of solar cells by coupled electrical - optical simulation
<p>Careful electrical design and optical design are both crucial for achieving high-efficiency solar cells. It is common to link these two aspects serially; the optical design is first done to minimize reflection and maximize light trapping, and then the resulting optical generation rate is input …
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Návrh projektorové soustavy transmisního elektronového mikroskopu pro metodu Single Particle Analysis
… soustavy byl vytvořen v programu Electron Optical Design (EOD) verze 4.020. Série buzení jednotlivých čoček pro zvětšení projektorové soustavy v rozsahu od 50 do 10000 byla vypočítaná pomocí přístupu využívajícího aproximaci tenké čočky, dále pomocí přístupu využívajícího aproximaci tlusté …
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Near-Infrared (NIR) Spectroscopy-based Pharmaceutical Process Analytical Technology (PAT) Systems: Risk and Performance
… processes. They are defined as systems for designing, analyzing, and controlling manufacturing operations through timely measurements of critical quality attributes of raw/in-process materials, with the goal of ensuring quality of final drug products.</p> <p>Near-Infrared (NIR) spectroscopy …
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Divergence Model for Measurement of Goos-Hanchen Shift
… verification of models and sensitivities, optical design of apparatus, image processing
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Materializing Light: Real-time, Handheld Fabrication of Programmable Structural Color
… colored. We present MorphoChrome, an optical device for real-time, handheld, programmable structural color fabrication. Analogous to painting with light, MorphoChrome creates multicolor, structurally colored designs by exposing a commercially available holographic photopolymer film to …
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Tensor photography : exploring space of 4D modulations inside traditional camera designs
… high resolution light field. In this thesis, we design, implement and analyze a new light field camera architecture that allows capture and reconstruction of higher resolution light fields in a single shot. The proposed architecture comprises three key components: light field atoms as sparse …
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Optical Analysis and Opto-Mechanical Design for Miniaturized Laser Illumination Module in 3D Areal Mapper
… structured-light illumination module with optical fiber input is designed to generate a coded 256 x 256 spots pattern for 3-D areal mapping applications. The projector uses the light from a He-Ne laser coupled to a polarization-maintaining (PM) fiber to illuminate a specially made hologram …
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Photodetection using ultrathin metal films
… in telecommunications for low-cost integrated optical circuitry. In this thesis, we show that this limitation can be overcome by exploiting resonant absorption in ultrathin metal films (< 20 nm). Our approach paves the way to implement scalable, lithography-free, and low-cost silicon-based …
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Design and Development of Advanced Adaptive Polymer Lenses
… advancements made in adaptive polymer lens design and implementation. Singlets and doublets lenses were constructed for visible, short- wavelength infrared (SWIR), and middle-wavelength infrared (MWIR)applications. The lenses are implemented in a variety of tactical imaging systems to …
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Smart optical imaging systems with automated electronics
… are several novel smart electronically automated optical designs to efficiently solve existing real-world problems in the field of shape sensing and imaging. First half of the thesis proposes shape sensing techniques that use an Electronically Controlled Variable Focus Lens (ECVFL) within a smart …
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Optimizing The Performance Of As-manufactured Grazing Incidence X-ray Telescopes Using Mosaic Detector Arrays
… X-ray telescopes have only been conceived and designed for a little over fifty (50) years. The Wolter Type I design is particularly well suited for stellar astronomical telescopes (very small field-of-view). The first orbiting X-ray observatory, HEAO-1 was launched in 1977, a mere twenty-eight …
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