Universitat Politècnica de Catalunya
Now showing items 6-25 of 58
The first papers on the fitting of ortho-k lenses in ametropic individuals, treatment that allows them to enjoy good vision without the need to wear glasses or contact lenses, were published almost 60 years ago. Both the ...
The optical characterization of an intraocular lens (IOL) provides objective and quantitative information that is essential to fully understand its performance as an implant that replaces the crystalline lens in the human ...
En la presente tesis doctoral se han estudiado los factores implicados en el proceso de colonización fúngica (adhesión e invasión) de lentes de contacto nuevas y procedentes de usuarios.<br/><br/>Para ello se ha diseñado ...
Medical digital imaging has become a key element of modern health care procedures. It provides a visual documentation, a permanent record for the patients, and most importantly the ability to extract information about many ...
Diese Arbeit soll einen Beitrag leisten zur Entwicklung neuer Sensorstrategien, basierend auf Phänomenen der optischer Rückkopplung, in Kombination mit die Intensitätsmodulation des Lasers. Optische Rückkopplung, ein ...
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, ...
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 ...
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 ...
(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 ...
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 ...
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 ...
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 ...
(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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
