Now showing items 11-30 of 58

    Derivation of analytical refraction, propagation and reflection equations for higher order aberrations of wavefronts 

    Esser, Gregor (Date of defense: 2012-06-25)

    Derivation of analytical refraction, propagation and reflection equations for Higher Order Aberrations of wavefronts From literature the analytical calculation of Lower Order Aberrations (LOA) of a wavefront after refraction, ...

    Desarrollo de un algoritmo de propagación de flujo luminoso para un dispositivo fotométrico móvil con capacidad de discretización angular: aplicación a la generación de mapas de iluminación de alumbrado público 

    Fernández Dorado, José (Date of defense: 2013-03-22)

    Esta tesis doctoral aborda el desarrollo de un algoritmo de propagación del flujo luminoso que permite a un dispositivo fotométrico realizar las medidas de la distribución de iluminación en grandes áreas, entre las cuales ...

    Desarrollo de un sistema de doble paso compacto y de bajo coste para la evaluación de la calidad óptica y la difusión intraocular 

    Sanabria, Ferran (Date of defense: 2015-12-02)

    The purpose of this PhD thesis was to design, implement and validate a low cost compact system based on the double-pass I technique in order to evaluate the viability of its use in the future in optical instrumentation ...

    Design and construction of a snapshot full-Stokes polarimetric camera : seeing through fog 

    Peña Gutiérrez, Sara (Date of defense: 2023-02-24)

    (English) Polarization is one of the properties of light and it is often put aside. Human beings receive light beams and process only the intensity and wavelength information. Our optical system lacks the capability of ...

    The design and implementation of a spectrally tuneable LED-based light sourde : towards a new era of intelligent illumination 

    Hertog, Wim (Date of defense: 2017-06-07)

    Rising population numbers place ever increasing demands on energy resources. A large percentage of the worldwide energy production is reserved for the generation of electricity and a significant portion of the electrical ...

    Design of a portable observatory control system 

    Suc, Vincent (Date of defense: 2018-11-07)

    In this thesis, we synthesize the development of a new concept of operation of small robotic telescopes operated over the Internet. Our design includes a set of improvements in control algorithmic and hardware of several ...

    Determinació del factor de cobertura en teixits de calada per processament de la imatge digital i espectroscòpia de reflexió 

    Tàpias Anton, Montserrat (Date of defense: 2012-06-08)

    In this thesis we applied, in a complementary way, techniques of digital image processing and reflectance spectroscopy to perform cover factor (CF) measurements in monochrome openwork fabrics. To evaluate the results ...

    Development and clinical applications of a whole anterior segment and retinal SS-OCT 

    Rodríguez Aramendía, Ana (Date of defense: 2023-03-24)

    (English) Vision is central to human perception. It emanates from a complex organ, the human eye, starting from photodetection in the retina. However, the quality of the visual experience depends on the anatomical integrity ...

    Development of a new spectral imaging system for the diagnosis of skin cancer 

    Delpueyo Español, Xana (Date of defense: 2017-11-06)

    The incidence of skin cancer in Europe, US and Australia has been rising rapidly. Skin cancer accounts for one in three cancers worldwide and a person has 1:25 chance to develop a melanoma, the most aggressive form. Visual ...

    Development of new methodologies for the clinical, objective and automated evaluation of visual function based on the analysis of ocular movements : application in visual health 

    Mestre Ferrer, Clara (Date of defense: 2019-05-24)

    Healthy visual function not only relies on good visual acuity. Other systems such as accommodation or binocular vision need to be effective. Binocular vision is the ability of the visual system to coordinate and integrate ...

    Device and strategy for surface energy measurement 

    Domínguez Álvarez, Noemí (Date of defense: 2018-03-15)

    In this Ph.D. Thesis, we have developed a new measurement method to measure the contact angle and the surface energy in hydrophobic samples with a device based on confocal technology. This new measurement method incorporates ...

    Diseño de un colorímetro triestímulo a partir de una cámara CCD-RGB 

    Martínez Verdú, Francisco Miguel (Date of defense: 2001-11-23)

    Un dispositivo de captura (escáner o cámara) de imágenes digitales no es un instrumento de medida del color como un espectrofotómetro o un tele-espectrocolorímetro. Aunque codifica la información espectral contenida en una ...

    Diseño e implementación de un laboratorio destinado a la validación clinica de ayudas para la percepción y movilidad en pacientes con limitación de campo periférico 

    Sánchez Herrero, Eulalia (Date of defense: 2022-01-21)

    People with peripheral visual field loss perceive limited information about the environment and present severe problems in achieving successful orientation and mobility. In recent years, virtual and augmented reality systems ...

    Diseño e implementación de un sistema multiespectral en el rango ultravioleta, visible e infrarrojo : aplicación al estudio y conservación de obras de arte 

    Herrera Ramírez, Jorge A. (Date of defense: 2014-03-25)

    Multispectral systems have several applications and there are different possible configurations in which they can be implemented. Different characteristics make them useful, but the basic one is the access to spectral ...

    Diseño, estudio y validación de una lente de contacto de gradiente de potencia para controlar la miopía = Design, study and validation of a radial refractive gradient contact lens for myopia control 

    Pauné i Fabré, Jaume (Date of defense: 2015-11-18)

    Myopia is the main cause of vision loss worlwide, with associated ocular pathology risks related to myopia amount. Therefore, interventions directed towards limiting or preventing the progression of myopia are of high ...

    Estratègia 2D per al disseny de reflectors amb facetes de forma lliure 

    Tomàs Corominas, Núria (Date of defense: 2015-11-11)

    This work can be framed in the field of computer-aided optical systems design and it is a part of a larger project in which automated processes are studied and implemented aiming to reduce the time span that stands between ...

    Estudi del parpelleig en usuaris/es de pantalles digitals : anàlisi d'estratègies pel condicionament del parpelleig i la distància de manera no intrusiva 

    Argilés Sans, Marc (Date of defense: 2018-07-09)

    Intoduction: There is an agreement in the scientific community, which indicates that excessive exposure to digital displays poses implications at a visual level, being ocular dryness and visual fatigue those of greater ...

    Estudi i desenvolupament d'un nou sistema d'inspecció de stents basat en tècniques de metrologia òptica 

    Bermúdez Porras, Carlos (Date of defense: 2017-04-22)

    Stent quality control is a critical process. Coronary stents have to be inspected 100% so no defective stent is implanted into a human body. We have developed an optical non-contact measurement instrument that provides ...

    Estudi i desenvolupament de sensors òptics ultra-ràpids per a metrologia tridimensional de superfícies 

    Martínez Marín, Pol (Date of defense: 2023-02-10)

    (English) Three-dimensional measurement of roughness and shape of a surface provides information about an object properties through surface parameters. These parameters are defined by international standards and can describe ...

    Evaluación de la Agudeza Visual Dinámica: una aplicación al contexto deportivo 

    Quevedo i Junyent, Lluïsa (Date of defense: 2007-04-14)

    The importance of vision in life is unquestionable. It is because of this that optometry, as a science of vision focused in measurement and analysis of visual function, has been developing techniques and instruments to ...