Now showing items 35-54 of 60
Azcona Guerrero, Francisco Javier (Date of defense: 2018-07-20)
In this Thesis, we explore Self-mixing interferometry (SMI ), a method capable of producing high resolution optical path related measurements in a simple, compact and cost-effective way. Even with a notably less complex ...
Rey Barroso, Laura (Date of defense: 2023-12-18)
(English) This thesis makes a significant contribution to the realm of medical diagnostics through the utilization of photonic technologies and emerging imaging modalities, leading to the creation of innovative approaches ...
Clavé Cerezo, Laura (Date of defense: 2023-04-27)
(English) Diffractive multifocal intraocular lens typically uses a hybrid refractive-diffractive design that consist of a high-power refractive base lens and a low-power diffractive profile engraved on one of its surfaces. ...
Otero Molins, Carles (Date of defense: 2018-01-19)
A visual stimulus can be presented in free space or through lens-based systems. Interestingly, it has been reported many times in the past that some subjects have poorer accommodative responses when optically stimulated, ...
Aldaba Arevalo, Mikel (Date of defense: 2012-10-22)
Accommodation, defined as the dioptric change of the eye, enables clear vision at different distances. Its study is interesting due to different aspects: the progressive loss of amplitude of accommodation known as presbyopia, ...
Ifrah, Reut (Date of defense: 2023-06-26)
(English) Meibomian gland dysfunction (MGD) is a chronic and diffuse abnormality of the meibomian glands (MGs) that occurs in 38% of contact lens (CL) wearers, though the influence of CLs on MGD is equivocal. A topical ...
Oteo Lozano, Esther (Date of defense: 2013-09-27)
En aquesta tesis doctoral es presenta un nou mètode per al càlcul de desalineaments en sistemes òptics a partir del front d'ona a la sortida del sistema. El mètode parteix de l'ajust de polinomis de Zernike al front d'ona ...
García Guerra, Carlos Enrique (Date of defense: 2016-07-29)
Within the visual system, the optics of the eye is responsible for forming images of external objects on the ocular fundus for its photo-reception and neural interpretation. However, the eye is not perfect and its capabilities ...
Torrecilla Ribalta, Elena (Date of defense: 2012-07-27)
La gestió sostenible dels ecosistemes marins requereix d'un millor coneixement de la distribució de certs paràmetres ecològics com les comunitats de fitoplàncton, inclosos aquells grups algals causants d'afloraments. La ...
Santos Vives, Pau (Date of defense: 2018-07-13)
Spatial vision features play a key role in human vision quality, which in turn depends on the retinal image quality and posterior neural processing. The retinal image is affected by three optical phenomena: diffraction, ...
Martínez Roda, Joan A. (Joan Antoni) (Date of defense: 2017-04-27)
Image formation in the retina is the first stage in the visual process (optical stage), which is completed with photoreceptor stimulation and distribution of the generated signals (retinal stage), transmission to the visual ...
Torrents Gómez, Aurora (Date of defense: 2011-12-22)
Desde hace años se han realizado múltiples investigaciones que tratan sobre la fiabilidad de la percepción de las distancias en profundidad y la influencia del entorno. En ocasiones, las pistas presentes en el espacio ...
Giner Tort, Anna (Date of defense: 2018-10-08)
Vision is presented and universally accepted as the most precious of the human senses.lt is structured in three main parts: the optical system {eye), the photo-sensor {eye's retina), and the data processor (brain). If one ...
Lupón Bas, Núria (Date of defense: 2000-06-21)
En el marc del tractament de materials amb làser, el poliment de superfícies és una tècnica relativament recent i amb múltiples aplicacions. En aquesta tesi es tracta de l'aplicació d'aquesta tècnica sobre components de ...
Armengol Cebrian, Jesús (Date of defense: 2000-12-14)
El treball que es presenta en aquesta tesis incideix sobre aquest aspecte clau en les aplicacions amb feixos làser d'alta potència: com obtenir distribucions d'intensitat que permetin generar tractaments tèrmics uniformes. ...
Valencia Díaz, Edison (Date of defense: 2007-02-20)
Esta tesis cubre un conjunto de objetivos de investigación relacionados con la adquisición, la medida, la representación y el procesado de la información de color contenida en la imagen digital. La caracterización de los ...
Castilla González, Pau (Date of defense: 2019-04-05)
In the present industrial thesis has been developed and implemented with success a measurement strategy that consists of an optical test of validation of the optical functionality of photonic components in the same ...
Pérez Cabré, Elisabet (Date of defense: 1998-12-01)
En el panorama actual dels processadors d'imatges basats en la correlació òptica, es pot dir que s'ha avançat molt per aconseguir un augment de la capacitat discriminativa del sistema de reconeixement que permeti diferenciar ...
Yáñez Alvarado, Carlos René (Date of defense: 2024-01-18)
(English) In this doctoral thesis, significant strides have been made in the realm of biofluid flow sensing through the innovative integration of Self-Mixing Interferometry (SMI) with confocal microscopy principles, resulting ...
Llenas Farràs, Aleix (Date of defense: 2019-12-04)
Lighting installations are usually static and based on long-standing visual indicators such as colour temperature, colour rendering, and illuminance values. However, we now know that spectral variations in light elicit ...