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Relevant bibliographies by topics / Optical Illumination / Dissertations / Theses

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Dissertations / Theses on the topic 'Optical Illumination'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Brookshire, Charles Thomas. "Illumination Recovery For Optical Microscopy." University of Dayton / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1588936914060945.

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2

Kosmeier, Sebastian. "Optical eigenmodes for illumination & imaging." Thesis, University of St Andrews, 2013. http://hdl.handle.net/10023/3369.

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This thesis exploits so called “Optical Eigenmodes” (OEi) in the focal plane of an optical system. The concept of OEi is introduced and the OEi operator approach is outlined, for which quadratic measures of the light field are expressed as real eigenvalues of an Hermitian operator. As an example, the latter is employed to locally minimise the width of a focal spot. The limitations of implementing these spots with state of the art spatial beam shaping technique are explored and a selected spot with a by 40 % decreased core width is used to confocally scan an in focus pair of holes, delivering a

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3

Appelt, Daniel. "Single-shot optical sectioning using polarised illumination coded structured illumination microscopy (picoSIM)." Thesis, King's College London (University of London), 2013. https://kclpure.kcl.ac.uk/portal/en/theses/singleshot-optical-sectioning-using-polarised-illumination-coded-structured-illumination-microscopy-picosim(825e59c9-6998-4acd-824b-7173ca670747).html.

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The conventional epi-uorescent wide-eld microscope features a uniform illumination of an extended sample region. A problem arises with this setup since light from outof-focus uorophores is also detected. The result is poor quality in the nal image, as out-of-focus structures appear blurred; furthermore, their emission light contributes to the background and leads to a reduction in image contrast. Removing out-of-focus light yields an optically sectioned image: a thin slice of a thick sample that only contains in-focus information. Taking a stack of such sectioned images allows for a three-dime

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4

KaradaglicÌ, Dejan. "Wide-field optical sectioning microscopy using structured illumination." Thesis, University of Oxford, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.404166.

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5

Wang, Lirong. "DESIGN, MODELING AND TESTING OF OPTICAL SURFACES IN ILLUMINATION OPTICS." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/195097.

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This dissertation investigates design, modeling and testing methods of optical surfaces in illumination optics.The main focus of this dissertation is to investigate the faceted non-imaging specular light reflector that is often used to generate a uniform, incoherent illuminance distribution. General design methodologies of faceted light reflectors are overviewed. Several design examples of faceted light reflectors including a novel LED flashlight, a novel microscope illuminator and a 20-m segmented paraboloidal solar collector are discussed and analyzed.An accurate source model is important fo

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6

Volcy, Jerry. "Optimum illumination for machine vision using optical scatter data." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/17548.

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7

Brainerd, Steve. "Off-axis illumination for extending optical microlithographic system performance /." Full text open access at:, 1993. http://content.ohsu.edu/u?/etd,185.

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8

Mooney, Scott William Joseph. "Coupled computations of shape, material, illumination, and optical focus." Thesis, The University of Sydney, 2017. http://hdl.handle.net/2123/17678.

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Many distinct combinations of three-dimensional shape, surface material, illumination, and optical focus can induce similar patterns of luminance gradients on the retina. The present thesis examines several conditions in which the visual system fails to correctly disentangle these physical sources of image structure, and uses these cases of misperception to assess how the visual system distinguishes diffuse shaded shape from specular reflections and defocus blur. Chapter 2 investigated how physical variations in surface reflectance can transform our perception of 3D shape, and vice versa. Incr

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9

Uthoff, Ross. "Design of a Smartphone-Camera-based Fluorescence Imaging System for the Detection of Oral Cancer." Thesis, The University of Arizona, 2015. http://hdl.handle.net/10150/593619.

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Shown is the design of the Smartphone Oral Cancer Detection System (SOCeeDS). The SOCeeDS attaches to a smartphone and utilizes its embedded imaging optics and sensors to capture images of the oral cavity to detect oral cancer. Violet illumination sources excite the oral tissues to induce fluorescence. Images are captured with the smartphone’s onboard camera. Areas where the tissues of the oral cavity are darkened signify an absence of fluorescence signal, indicating breakdown in tissue structure brought by precancerous or cancerous conditions. With this data the patient can seek further testi

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10

Lestoquoy, Guillaume. "Resolving optical illumination distributions along an axially symmetric photodetecting fiber." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/71498.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 41-43).<br>Photodetecting fibers of arbitrary length with internal metal, semiconductor and insulator domains have recently been demonstrated. These semiconductor devices display a continuous translational symmetry which presents challenges to the extraction of spatially resolved information. In this thesis, we overcome this seemingly fundamental limitation and achieve the detection and spatial loca

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11

Farooqi, Mohammed Junaid. "METHODS FOR IN SITU PIEZOPHYSIOLOGICAL STUDIES: OPTICAL SECTIONING VIA STRUCTURED ILLUMINATION AND FLUORESCENCE BASED CHARACTERIZATION OF NADH CONFORMATION." Oxford, Ohio : Miami University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=miami1249225952.

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12

Rodríguez, Jiménez Ángel David. "Optical microscopy techniques based on structured illumination and single-pixel detection." Doctoral thesis, Universitat Jaume I, 2017. http://hdl.handle.net/10803/405048.

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In this Thesis, we explore single-pixel microscopy to design and develop proof-of-principle experiments where the single-pixel detection strategy outperforms conventional optical array detection in wide-field microscopy. The ability of the single-pixel detection strategy to generate a spatially resolved image of an object hidden by arbitrary scattering media has been recently demonstrated. Strikingly, a sensor without spatial resolution is able to retrieve a high-resolution image of a sample hidden by a turbid media, a problem that cannot be solved with conventional cameras equipped with milli

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13

Bartoň, Luboš. "Konstrukce mikroskopového LED osvětlovacího zdroje." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230575.

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This master’s thesis deals with the construction design of microscope episcopic LED illumination source and subsequent functional sample realization. Illumination source is compatible with industrial microscope Nikon Eclipse LV150 and designed as a replacement for halogen light source. Way of collecting light is chosen with respect to search analysis results and collector optical element and LED is selected with respect to the analysis of the episcopic illuminator. Two construction designs are designed with respect to the results of photometric analyzes. Optimal design is realized and compared

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14

Zhu, Zhengbo, Donglin Ma, Qiaomu Hu, Yongqian Tang, and Rongguang Liang. "Catadioptric freeform optical system design for LED off-axis road illumination applications." OPTICAL SOC AMER, 2017. http://hdl.handle.net/10150/626573.

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The aim of this paper is to develop a new composite structure of catadioptric optical system containing both freeform refractive surface and freeform total internal reflective (TIR) surface for LED road illumination applications. The role of freeform refractive part is to generate the shifted general rectangular illumination pattern to optimally match the shape of the road surface. The application of TIR mechanism is aimed to control the stray light in the sidewalk direction of the road luminaire and maximize the efficient energy efficiency. In this paper, we use the "double pole" ray mapping

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15

Ryu, Jekwan 1970. "Resolution improvement in optical microscopy by use of multi-beam interferometric illumination." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/29959.

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Thesis (Ph. D.)--Harvard-MIT Division of Health Sciences and Technology, 2003.<br>Includes bibliographical references (p. 119-122).<br>In conventional optical microscopy, the numerical aperture (NA) of the objective lens intrinsically links the resolution, depth of field (DOF), working distance (WD) and field of view (FOV). In a diffraction-limited system, changing the NA to improve resolution is not possible without degrading the other optical performances. This linkage, which represents an important limitation in conventional microscopy, has now been broken. In the new method, a target is il

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16

Williams, Kaitlyn Elizabeth, and Kaitlyn Elizabeth Williams. "Parametrizing Freeform Optical Surfaces for the Optimized Design of Imaging and Illumination Systems." Thesis, The University of Arizona, 2017. http://hdl.handle.net/10150/624141.

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Two optical design scenarios—imaging and illumination—were investigated for their use of Cartesian- and polar-based functions to generate freeform optical surfaces. The imaging scenario investigated a single-element, refracting freeform surface that converts an on-axis object field to an off-axis image point. XY polynomials (Cartesian but not orthogonal) and Zernike polynomials (Polar and orthogonal) were the two different function sets used to manipulate the surfaces to achieve the freeform imaging scenarios. The investigation discovered that the results between both function sets did not di

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17

Sasián, José, Dmitry Reshidko, and Chia-Ling Li. "Aspheric/freeform optical surface description for controlling illumination from point-like light sources." SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS, 2016. http://hdl.handle.net/10150/622704.

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We present an optical surface in closed form that can be used to design lenses for controlling relative illumination on a target surface. The optical surface is constructed by rotation of the pedal curve to the ellipse about its minor axis. Three renditions of the surface are provided, namely as an expansion of a base surface, and as combinations of several base surfaces. Examples of the performance of the surfaces are presented for the case of a point light source. (C) 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)

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18

Zhang, Han. "Superresolution Nonlinear Structured Illumination Microscopy By Stimulated Emission Depletion." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/338899.

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The understanding of the biological processes at the cellular and subcellular level requires the ability to directly visualize them. Fluorescence microscopy played a key role in biomedical imaging because of its high sensitivity and specificity. However, traditional fluorescence microscopy has a limited resolution due to optical diffraction. In recent years, various approaches have been developed to overcome the diffraction limit. Among these techniques, nonlinear structured illumination microscopy (SIM) has been demonstrated a fast and full field superresolution imaging tool, such as Saturate

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19

de, Leon Erich Ernesto. "Optical Design of Volume Holographic Imaging Systems for Microscopy." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/242357.

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Confocal microscopy rejects out of focus light from the object by scanning a pinhole through the object and constructing the image point by point. Volume holographic imaging (VHI) systems with bright-field illumination have been proposed as an alternative to conventional confocal type microscopes. VHI systems are an imaging modality that does not require scanning of a pinhole or a slit and thus provides video rate imaging of 3-dimensional objects. However, due to the wavelength-position degeneracy of the hologram, these systems produce less than optimal optical sectioning because the high sele

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20

Ballard, Ian Mark. "Electrical and optical characterisation of MQW solar cells under elevated temperature and illumination levels." Thesis, Imperial College London, 2000. http://hdl.handle.net/10044/1/8437.

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21

Watanabe, Eri. "Pneumatic switching of the optical power of a Fresnel lens for control of solar illumination." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/12591.

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A pneumatic-based illumination switch has been developed for use in conjunction with collimated daylighting collection systems that collect sunlight on the façade of a multi-storey building and distribute it throughout the core areas of the building. Daylight collection systems are currently of interest since they have the potential to significantly reduce the need for electrical lighting in workplaces, thus reducing the required electrical energy and associated greenhouse gas emissions. In one particular system, sunlight is distributed by hollow light guides and redirected into light fixtures

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22

Luo, Ming. "Optical Analysis and Opto-Mechanical Design for Miniaturized Laser Illumination Module in 3D Areal Mapper." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/33169.

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A miniaturized spatial light modulator (SLM)-based 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 so that four virtual point sources are regenerated. The interference pattern of the four sources are filtered and modulated by an SLM. The output intensity can thus be encoded to form any arbitrary pattern through the electronic input applied to the SLM with

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23

Nylk, Jonathan. "Advanced light-sheet and structured illumination microscopy techniques for neuroscience and disease diagnosis." Thesis, University of St Andrews, 2016. http://hdl.handle.net/10023/10842.

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Optical microscopy is a cornerstone of biomedical research. Advances in optical techniques enable specific, high resolution, sterile, and biologically compatible imaging. In particular, beam shaping has been used to tailor microscopy techniques to enhance microscope performance. The aim of this Thesis is to investigate the use of novel beam shaping techniques in emerging optical microscopy methods, and to apply these methods in biomedicine. To overcome the challenges associated with high resolution imaging of large specimens, the use of Airy beams and related techniques are applied to light-sh

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24

Lošťák, Martin. "Programovatelná osvětlovací soustava pro optický mikroskop." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228217.

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A programmable illuminating system (PIS) uses a commercial multimedia projector together with a suitable optical relay system in order to illuminate specimens under microscope with transmitted light. The theoretical part of the diploma thesis describes some methods used in the optical transmission microscopy. All of these methods employ physical masks placed in the condenser front focal plane. In the case of the traditional methods the masks are used to enhance contrast (e.g. dark-field illumination) and resolution (oblique illumination). One of the methods (a condenser with rotating aperture)

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25

Chrysler, Benjamin D., Yuechen Wu, Raymond K. Kostuk, and Zhengshan Yu. "Volume holographic lens spectrum-splitting photovoltaic system for high energy yield with direct and diffuse solar illumination." SPIE-INT SOC OPTICAL ENGINEERING, 2017. http://hdl.handle.net/10150/627188.

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In this paper a prototype spectrum-splitting photovoltaic system based on volume holographic lenses (VHL) is designed, fabricated and tested. In spectrum-splitting systems, incident sunlight is divided in spectral bands for optimal conversion by a set of single-junction PV cells that are laterally separated. The VHL spectrum-splitting system in this paper has a form factor similar to conventional silicon PV modules but with higher efficiencies (>30%). Unlike many other spectrum-splitting systems that have been proposed in the past, the system in this work converts both direct and diffuse sunli

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26

He, Weiyi. "Optical Design of Beam Shaping Optics for Camera Probe and LED Light Illumination Used for Minimally Invasive Abdominal Surgery." Scholar Commons, 2010. http://scholarcommons.usf.edu/etd/3532.

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The optical design of a LED illuminator and camera imaging system were studied for potential use in a small medical "robotic type" probe to be used for minimally invasive abdominal surgery. Beam shaping optical reflectors were studied to increase the intensity distribution of the LED beam directed toward a close-by target surface. A CMOS/CCD camera and lens was used to image the targeted area. In addition, extensive optical ray tracing simulations were made to predict the intensity patterns. The experimental measurements and ray tracing simulations were in good agreement, and indicated that 20

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27

Katkam, Rajender. "Dual field of view optical system for colonoscope." Thesis, The University of Arizona, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1564291.

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<p> The present dual field of view flexible colonoscope can provide both forward view and radial or backward view of the colon to improve detection of cancerous polyps. The colonoscope has its own illumination that illuminates the parts of the colon viewed by imaging optics. The optical system, limited only by the diffraction effects at the exit pupil over the entire visible spectrum, can provide high resolution and is suitable for color imaging. The flexible colonoscope has an on-board sensor at the proximal end of the colonoscope to improve resolution. The proximal end of colonoscope measure

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Lingfors, David. "Illumination properties and energy savings of a solar fiber optic lighting system balanced by artificial lights." Thesis, Uppsala universitet, Fasta tillståndets fysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-204664.

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A solar fiber optic lighting system, SP3 from the Swedish company Parans Solar Lighting AB, has been installed in a study area/corridor test site. A collector is tracking the sun during daytime, focusing the direct sun irradiance via Fresnel lenses into optical fibers, which guide the solar light into the building. The illumination properties of the system have been characterized. The energy saving due to reduced need of artificial lighting have been calculated and methods for balancing the artificial lights in the test site have been evaluated. The illumination at the test site using solar li

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Bösel, Christoph [Verfasser], Herbert [Gutachter] Gross, Karl-Heinz [Gutachter] Brenner, and Fabian [Gutachter] Duerr. "Freeform illumination design in optical systems with partial differential equations / Christoph Bösel ; Gutachter: Herbert Gross, Karl-Heinz Brenner, Fabian Duerr." Jena : Friedrich-Schiller-Universität Jena, 2019. http://d-nb.info/1207271497/34.

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30

Sink, Kyle J. "Design and Construction of a Lighting System to Illuminate a Photobioreactor." Ohio University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1320867288.

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31

Viera, Sotillo Alberto Antonio. "Effect of multiple injection strategies on the Diesel spray formation and combustion using optical diagnostics." Doctoral thesis, Universitat Politècnica de València, 2019. http://hdl.handle.net/10251/123954.

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[ES] En los últimos años, la evolución de las tecnologías de inyección ha permitido no solo mejorar el proceso de mezcla, sino también controlar con precisión los parámetros de inyección, agregando flexibilidad a los sistemas para nuevas estrategias y un grado adicional de complejidad para los investigadores. Más aún, las estrategias de inyecciones múltiples han demostrado ser capaces de reducir el consumo de combustible, así como también la emisión de partículas, los óxidos de carbono, los óxidos de nitrógeno, el hollín y los hidrocarburos no quemados, convirtiéndose en un estándar en la indu

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32

Huda, Gazi Mostafa. "Modification of Plasmonic Nano Structures' Absorption and Scattering Under Evanescent Wave Illumination Above Optical Waveguides or With the Presence of Different Material Nano Scale Atomic Force Microscope Tips." UKnowledge, 2014. http://uknowledge.uky.edu/ece_etds/43.

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The interaction of an evanescent wave and plasmonic nanostructures are simulated in Finite Element Method. Specifically, the optical absorption cross section (Cabs) of a silver nanoparticle (AgNP) and a gold nanoparticle (AuNP) in the presence of metallic (gold) and dielectric (silicon) atomic force microscope (AFM) probes are numerically calculated in COMSOL. The system was illuminated by a transverse magnetic polarized, total internally reflected (TIR) waves or propagating surface plasmon (SP) wave. Both material nanoscale probes localize and enhance the field between the apex of the tip and

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33

Mudry, Emeric. "Resolution improvement in fluorescence and phase optical microscopy." Phd thesis, Université Paul Cézanne - Aix-Marseille III, 2012. http://tel.archives-ouvertes.fr/tel-00822086.

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La microscopie optique est une technique essentielle pour de nombreuses disciplines des sciences expérimentales qui nécessitent des résolutions sans cesse plus petites. Dans ce travail de thèse sont présentés plusieurs travaux pour l'amélioration de la résolution en microscopie de fluorescence et en microscopie tomographique par diffraction (MTD), une récente technique de microscopie de phase. Dans un premier temps, il est montré que déposer l'échantillon sur un miroir permet d'augmenter la résolution axiale en MTD et en microscopie confocale de fluorescence. En microscopie confocale, il faut

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34

Le, Meur Julien. "Conception, assemblage, optimisation et test de modules intégrés d'illumination structurée à base d'éléments optiques diffractifs : application particulière à la reconnaissance faciale." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2018. http://www.theses.fr/2018IMTA0121.

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Ce travail de thèse visait à concevoir, assembler, optimiser et tester des modules d’illumination structurée à base d’éléments optiques diffractifs (EODs) pour une application de reconnaissance faciale sur appareils mobiles (smartphones, tablettes). L’intégration des modules dans des smartphones impliquait de fortes contraintes de miniaturisation, de consommation énergétique, de coût, et de sécurité laser. L’élément clé de chaque module était un EOD de Fourier à angle de diffraction supérieur à la limite du modèle scalaire paraxial de la diffraction permettant d’illuminer la surface d’un visag

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35

Thouvenin, Olivier. "Optical 3D imaging of subcellular dynamics in biological cultures and tissues : applications to ophthalmology and neuroscience." Thesis, Sorbonne Paris Cité, 2017. http://www.theses.fr/2017USPCC169/document.

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Cette thèse a pour objectif l’étude d’un lien effectif potentiel entre la motilité cellulaire, la mécanique cellulaire, et l’activité biochimique de ces mêmes cellules. Ce couplage a été étudié dans divers systèmes biologiques, et aussi bien dans des cultures de cellules qu’à l’intérieur de tissus plus complexes. Notamment, nous avons particulièrement cherché à détecter un couplage électromécanique dans des neurones qui pourrait être impliqué dans la propagation du message nerveux.Pour ce faire, nous avons dû développer deux microscopes optiques à la sensibilité extrême. Ces microscopes se com

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Ronzitti, E. "NANOBIOPHOTONICS APPROACHES TOWARDS ADVANCED BIOIMAGING." Doctoral thesis, Università degli Studi di Milano, 2011. http://hdl.handle.net/2434/155507.

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Due to its nature, imaging is dependent on data visualization. More specifically, when dealing with optical microscopy imaging, diffraction limited spatial resolution and the presence of out-of-focus contributions are two of the key elements for the generation of 4D (x,y,z,t) data sets oriented to study molecular processes at the nanoscale. Within the medical nanotechnology scenario, optical fluorescence techniques have a pivotal role thanks to their non invasive capability to address biological questions in three dimensions with a remarkable capability to distinguish fine details, tremendousl

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Goff, Frances. "Optical techniques for the investigation of a mechanical role for FRMD6/Willin in the Hippo signalling pathway." Thesis, University of St Andrews, 2019. http://hdl.handle.net/10023/17120.

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The mammalian hippo signalling pathway controls cell proliferation and apoptosis via transcriptional co-activators YAP and TAZ, and as such is a key regulator of organ and tissue growth. Multiple cellular components converge in this pathway, including the actin cytoskeleton, which is required for YAP/TAZ activity. The precise mechanism by which the mechanical actomyosin network regulates Hippo signalling, however, is unknown. Optical methods provide a non-invasive way to image and study the biomechanics of cells. In the past two decades, super-resolution fluorescence microscopy techniques that

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Shelley, Anthony N. "INCORPORATING MACHINE VISION IN PRECISION DAIRY FARMING TECHNOLOGIES." UKnowledge, 2016. http://uknowledge.uky.edu/ece_etds/86.

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The inclusion of precision dairy farming technologies in dairy operations is an area of increasing research and industry direction. Machine vision based systems are suitable for the dairy environment as they do not inhibit workflow, are capable of continuous operation, and can be fully automated. The research of this dissertation developed and tested 3 machine vision based precision dairy farming technologies tailored to the latest generation of RGB+D cameras. The first system focused on testing various imaging approaches for the potential use of machine vision for automated dairy cow feed int

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Rypák, Andrej. "Raytracing virtuálních grafických scén." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2012. http://www.nusl.cz/ntk/nusl-236470.

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This thesis is dedicated to ray tracing based rendering methods, primarily the original ray tracing. Besides introducing a brief historical overview of algorithms from the family, it presents all the essential tools, techniques and physics needed for designing a rendering application in detail. A significant part of the document consists of an implementation of a photorealistic rendering application for interactive graphics 3D virtual scenes. The focus is on rendering without using any additional model information. The thesis includes descriptions and explanations of specific problems and thei

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Krzewina, Leo G. "Structured light for three-dimensional microscopy." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001515.

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Oliveira, André Orlandi de. "Retinógrafo coaxial não-midriático." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-01122017-144856/.

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Retinógrafo é um complexo sistema óptico que, simultaneamente, ilumina e captura imagens da retina. Basicamente, esse equipamento é composto por três módulos: iluminação, lente objetiva e detecção. Em razão de seu sofisticado desenho óptico, é possível conciliar baixa refletividade da retina e obtenção de imagens de alta qualidade. Entretanto, em virtude do alto número de componentes não-coaxiais do módulo de iluminação, seu alinhamento óptico se torna complexo. Neste trabalho, é apresentado um sistema óptico totalmente coaxial para um retinógrafo nãomidriático. A óptica de iluminação tradicio

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Maršíková, Barbora. "Trojrozměrné zobrazování v holografickém mikroskopu pomocí koherenční brány." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-392840.

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Tato diplomová práce se zabývá výzkumem na téma vlivu prostorové koherence osvětlení. Účelem je určit schopnost osové lokalizace při zobrazení Koherencí řízeným holografickým mikroskopem (CCHM) v závislosti na různé prostorové koherenci světelného zdroje. Osová lokalizace je v tomto případě zkoumána jako kvalita rozlišení drobných detailů trojrozměrného vzorku, umístěných nad sebou. Teorie zobrazení holografickým mikroskopem a teorie rozptylu v nehomogenních prostředích je shrnuta v první části práce, v rozsahu nutném pro pochopení části praktické. Základní princip fungování mikroskopu a přesn

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Kaňa, Leoš. "Návrh vnitřního optického spoje." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219165.

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In last years phenomena of wireless communication technologies became a primary interest of big development laboratories whole world. Domain of point to point links which are realized by laser technology with narrow beam divergence and very sensitive photo-detectors is ordinarily used these days. This trend of using light waves as carrier medium turned interests of scientist to the sphere of wide area networks which is domain of wi-fi radio technologies. One of new trends in this sphere is also in-door free space optics. With expansion which leads to using LED's in everyday applications and wi

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Meiniel, William. "Développement et mise en oeuvre de stratégies d'échantillonnage comprimé pour le débruitage et l'acquisition d'images en microscopie à fluorescence et en tomographie en cohérence optique." Electronic Thesis or Diss., Paris, ENST, 2018. http://www.theses.fr/2018ENST0052.

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Dans le cadre de la théorie mathématique de l’échantillonnage comprimé (Compressed Sensing, CS), développée récemment, il est possible de reconstruire un signal ou une image à partir de très peu d’acquisitions. Dans cette thèse, nous étudions comment cette théorie peut être adaptée à deux techniques de microscopie optique : la microscopie à fluorescence, et la tomographie en cohérence optique. Ces deux technologies présentent chacune des limitations, qui peuvent être corrigées par prise en compte de stratégies d’échantillonnage comprimé, que l’on peut diviser en deux catégories : des solutions

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Lee, Eun Ho. "Illumination, optics, and retroreflectors for efficient landmark tracking." Diss., Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/15987.

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Hardy, Nicholas D. (Nicholas David). "Optimal standoff imaging using structured laser illumination and graphical models." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/92965.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2014.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 241-246).<br>Structured illumination can be used to form images without using a lens or a detector array. A series of spatially-structured laser pulses is cast on the scene of interest, and a single-detector power measurement

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Hale, Peter John. "Illuminating flatland : nonlinear and nonequilibrium optical properties of graphene." Thesis, University of Exeter, 2012. http://hdl.handle.net/10036/3600.

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In this thesis the nonlinear and nonequilibrium properties of graphene are experimentally investigated using degenerate four--wave mixing and time--resolved pump--probe spectroscopy. High quality exfoliated natural graphite and large area epitaxial graphene on silicon carbide are investigated with femtosecond and picosecond ultrafast pulses in the near--infrared. A bespoke technique for suspending exfoliated graphene is also presented. In Chapter 3, the third--order nonlinear susceptibility of graphene is measured for the first time and shows a remarkably large response. Degenerate four--wave

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Rangarajan, Prasanna. "Pushing the limits of imaging using patterned illumination." Thesis, Southern Methodist University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3624926.

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<p> The image captured by an imaging system is subject to constraints imposed by the wave nature of light and the geometry of image formation. The former limits the resolving power of the imager while the latter results in a loss of size and range information. The body of work presented in this dissertation strives to overcome the aforementioned limits. The suite of techniques and apparatus ideas disclosed in the work afford imagers the unique ability to capture spatial detail lost to optical blur, while also recovering range information. </p><p> A recurring theme in the work is the notion o

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Červinka, Luděk. "Čtecí zařízení mikroteček." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217207.

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The microdots are very small object. The microdots are applied in protection object. The project purpose is to find and to analyze the microdots. The project consists from two parts. A first part describes the hardware sensor construction and a second part describes the software solution. I selected the optics, camera module and illumination in the hardware part. I’m analyzing of the microdots on a picture in software part.

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Alexander, Andrew Lafayette. "Evaluation of illumination wavelengths for fluorescence detection of atherosclerosis." Diss., The University of Arizona, 1994. http://hdl.handle.net/10150/186607.

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The fluorescence-emission spectra of normal arterial tissues and atherosclerotic plaques are distinct. The fluorescence spectra of arterial tissues are also dependent on the illumination wavelength. Which illumination wavelengths are best for identifying arterial tissues? To answer this question, a system for measuring fluorescence spectra at different illumination wavelengths was constructed and the fluorescence spectra of in-vitro aorta specimens were acquired with several illumination wavelengths between 270 nm and 500 nm. The Mahalanobis distance, a statistical measure of separability betw

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