Departament d'Òptica i Optometria: Enviaments recents
Ara es mostren els items 13-24 de 58
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Quality check of optical elements manufactured with in-mould hybrid integration technique
(Universitat Politècnica de Catalunya, 2019-04-05)
Tesi
Accés obertIn 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 ... -
Design of a portable observatory control system
(Universitat Politècnica de Catalunya, 2018-11-07)
Tesi
Accés obertIn 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 ... -
Optical and visual characterization of multifocal contact lenses and multifocal intraocular lenses
(Universitat Politècnica de Catalunya, 2018-10-08)
Tesi
Accés obertVision 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 ... -
Novel system for measuring the scattering of the cornea and the lens
(Universitat Politècnica de Catalunya, 2018-07-13)
Tesi
Accés obertSpatial 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, ... -
Estudi del parpelleig en usuaris/es de pantalles digitals : anàlisi d'estratègies pel condicionament del parpelleig i la distància de manera no intrusiva
(Universitat Politècnica de Catalunya, 2018-07-09)
Tesi
Accés obertIntoduction: 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 ... -
Implementation of differential self-mixing interferometry systems for the detection of nanometric vibrations
(Universitat Politècnica de Catalunya, 2018-07-20)
Tesi
Accés obertIn 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 ... -
Structural and functional macular inter-ocular asymmetry in patients with high myopia
(Universitat Politècnica de Catalunya, 2018-06-25)
Tesi
Accés obertBACKGROUND: Retinal evaluation performed in the optometry clinic allows optometrists to track the prognosis of retinal disease and to assess anatomical and functional changes related to age and pathological and non-pathological ... -
Device and strategy for surface energy measurement
(Universitat Politècnica de Catalunya, 2018-03-15)
Tesi
Accés obertIn 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 ... -
Development of a new spectral imaging system for the diagnosis of skin cancer
(Universitat Politècnica de Catalunya, 2017-11-06)
Tesi
Accés obertThe 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 ... -
Lens-based technologies to study accommodation and refraction
(Universitat Politècnica de Catalunya, 2018-01-19)
Tesi
Accés obertA 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, ... -
The design and implementation of a spectrally tuneable LED-based light sourde : towards a new era of intelligent illumination
(Universitat Politècnica de Catalunya, 2017-06-07)
Tesi
Accés obertRising 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 ... -
Estudi i desenvolupament d'un nou sistema d'inspecció de stents basat en tècniques de metrologia òptica
(Universitat Politècnica de Catalunya, 2017-04-22)
Tesi
Accés obertStent 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 ...