Departament d'Òptica i Optometria

Recent Submissions

  • Tear osmolarity and ocular changes in pterygium 

    Julio Morán, Gemma; Lluch Margarit, Sara; Pujol Vives, Pere; Alonso Perez, Silvia; Merindano Encina, M. Dolores (2012-12)
    Article
    Restricted access - publisher's policy
    Purpose: To determine abnormalities in tear osmolarity (TO), tear function, and impression cytology in patients with pterygium and to assess the relationship between the variables. Methods: Thirty eyes from 30 patients ...

  • Geometric model and calibration method for a solid-state LiDAR 

    García Gómez, Pablo; Royo Royo, Santiago; Rodrigo Arcay, Noel; Casas Pla, Josep Ramon (Multidisciplinary Digital Publishing Institute (MDPI), 2020-05-20)
    Article
    Open Access
    This paper presents a novel calibration method for solid-state LiDAR devices based on a geometrical description of their scanning system, which has variable angular resolution. Determining this distortion across the entire ...

  • Tolerancia de la especie Schoenoplectus americanus (Totora) para el tratamiento de aguas residuales en Haparquilla, Cusco, Perú 

    Pastor Zegarra, Rosario Margarita; Joachin, Aydee; Suero Sánchez, Diego Enrique; Morató Farreras, Jordi (2018)
    Conference lecture
    Open Access
    Las plantas acuáticas (macrófitos) en los humedales construidos para el tratamiento de aguas residuales permiten la estabilización de superficie de los lechos de tratamiento, transportan oxigeno a las raíces, favorecen el ...

  • Training for using constructed wetlands to treat landfill leachate in Anta-Cusco 

    Pastor Zegarra, Rosario Margarita; Arias, Carlos Alberto; Miglio, Rosa; Morató Farreras, Jordi (CRANFIELD UNIVERSITY, 2015)
    Conference lecture
    Open Access
    The work aims at designing and implementing a demonstrative pilot plant to treat landfill leachate to: i. Encourage of the use the constructed wetlands for water quality improvement ii. To improve technical training ...

  • Dispositivo para la medida de frentes de onda muy aberrados y con gran apertura 

    Caum Aregay, Jesús; Arasa, Josep; Royo Royo, Santiago (2009)
    Conference report
    Restricted access - publisher's policy
    En la comunicación presentamos un dispositivo basado en la deflectometría ronchi digital adaptado para el control de calidad de lentes oftálmicas de adición progresiva, en una sola exposición y a campo completo. Las ...

  • Null-test dinámico de lentes progresivas personalizadas basado en un modulador puro de fase de cristal líquido 

    Ares Rodríguez, Miguel; Royo Royo, Santiago; Sergievskaya, Irina; Atashkhooei, Reza (2009)
    Conference report
    Restricted access - publisher's policy
    Los avances en las capacidades de diseño y en las herramientas mecánicas de fabricación de superficies ópticas arbitrarias (free form) hacen posible la generación de lentes de formas más complejas. Entre los procesos de ...

  • Vibrometría de alta resolución utilizando interferometría óptica retroalimentada diferencial por modulación electrónica 

    Jha, Ajit; Azcona Guerrero, Francisco Javier; Yáñez Alvarado, Carlos René; Royo Royo, Santiago (2015)
    Conference report
    Open Access
    En este artículo presentamos un nuevo método para la medición de desplazamientos con amplitud de movimiento inferior a media longitud de onda láser. El método propuesto está basado en la inducción de modulación sobre la ...

  • Development of a compact tool for sealing the compensator group in final stages of alignment 

    Arasa Marti, Jose; Oteo Lozano, Esther; Blanco Nieto, Patricia; Royo Royo, Santiago; Cifuentes Medina, Andres Fernando (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2009)
    Conference lecture
    Restricted access - publisher's policy
    A high-precision, low-cost tool for optimal alignment of a compensator group in anamorphic objectives is presented. The system provides highly accurate information by analyzing the axis and field PSFs in the focal plane ...

  • New cost-effective sensor for the characterization of automotive headlamps by measurements in the near field 

    Royo Royo, Santiago; Arranz, María Jesús; Arasa, Josep; Cattoen, Michel; Bosch, Thierry (Elsevier, 2006-12-01)
    Article
    Open Access
    Nowadays, European Normative regarding headlamp validation evaluates the photometric distribution of the source as a series of illumination values measured at a plane placed 25 m away from the light source. An innovative ...

  • Differential self-mixing interferometry for micro-cantilever motion sensing 

    Azcona Guerrero, Francisco Javier; Jha, Ajit; Yáñez, Carlos; Royo Royo, Santiago (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2015)
    Conference report
    Restricted access - publisher's policy
    Force sensing is a common practice used for the characterization of matter properties and in particular of bio-materials. Different optical methods have been used in the past to allow high resolution force measurements ...

  • Evaluation of the effect of irrigation water quality on chlorophyll content in high Andean plants 

    Rosado, Ximena; Pastor Zegarra, Rosario Margarita; Morató Farreras, Jordi (2019)
    Conference report
    Open Access
    This study aims: i) to promote constructed wetlands (CWs) as useful profitable alternative for wastewater treatment, ii) to validate atLEAF+ measurements in three high-Andean species and iii) to evaluate autochthonous ...

  • Micrometric noncontact profiler for optical quality surfaces 

    Royo Royo, Santiago; Arasa, Josep; Caum Aregay, Jesús (2001-12-01)
    Article
    Restricted access - publisher's policy
    A non-contact technique for obtaining accurate profiles of optical qualitysurfaces with micrometric accuracy has been developed. The technique isbased on the Ronchi test principle, that is, on the study of the interaction ...

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