Recent Submissions

  • Confocal unrolled areal measurements of cylindrical surfaces 

    Matilla Sánchez, Aitor; Bermúdez Porras, Carlos; Mariné, Jordi; Martínez López, David; Cadevall Artigues, Cristina; Artigas Pursals, Roger (2017)
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    Confocal microscopes are widely used for areal measurements thanks to its good height resolution and the capability to measure high local slopes. For the measurement of large areas while keeping few nm of system noise, it ...
  • Active illumination focus variation 

    Bermúdez, Carlos; Martínez Marin, Pol; Cadevall Artigues, Cristina; Artigas Pursals, Roger (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2019)
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    Focus Variation (FV) has been successfully employed for the three-dimensional measurement of rough surfaces. The technique relies on scanning the sample under inspection across the depth of focus of a high numerical aperture ...
  • Adaptive optical head for industrial vibrometry applications 

    Atashkhooei, Reza; Zabit, U; Royo Royo, Santiago; Bosch, Thierry; Bony, F. (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2011)
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    A self-mixing laser interferometer has been combined with a compact and robust optical system including an adaptive optical element in the form of a voltage controllable liquid lens. The use of the liquid lens enables the ...
  • Submicrometric profilometry of nonrotationally symmetrical surfaces using the Ronchi test 

    Royo Royo, Santiago; Arasa, Josep; Caum Aregay, Jesús (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2000)
    Conference report
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    The Ronchi test is a widely used tool in the optical shop, because of its capability of measuring wide-field profiles of optical quality surfaces through its important ray slope dynamic range. Although many applications ...
  • Adaptive feedback control in self-mixing interferometry using active optical elements 

    Atashkhooei, Reza; Zabit, U; Royo Royo, Santiago; Azcona Guerrero, Francisco Javier; Sergievskaya, Irina (Universidad de Murcia, 2011)
    Conference report
    Open Access
    A voltage-controlled liquid lens has been used as an adaptive optical element integrated in a conventional self-mixing interferometry setup. The lens is used to control the optical feedback level and the focus position of ...
  • Fast correction in adaptive optical system using block control 

    Sergievskaya, Irina; Royo Royo, Santiago; Riu, Jordi; Ares Rodríguez, Miguel (Universidad de Murcia, 2011)
    Conference report
    Open Access
    We propose to take advantage of the sparse structure of the control matrix in adaptive optical systems in order to allow the acceleration of the control loop in real time wavefront correction. The idea is using the local ...
  • Proyección de franjas fotogramétrica para la medida in vivo de topografías de piel humana 

    Atashkhooei, Reza; Royo Royo, Santiago; Suc, Vincent; Sergievskaya, Irina; Ares Rodríguez, Miguel; Segura Pla, Jordi; Galcerán, José; Panyella, David; Coll, Joaquim (2009)
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    La perfilometría topográfica de la piel en diferentes escalas permite el análisis cuantitativo de los procedimientos médicos y cosméticos. En particular, el uso de parámetros perfilométricos de superficie en las mediciones ...
  • Desarrollo de una cámara lidar para aplicaciones de imagen 3D de tiempo real 

    Riu, Jordi; Royo Royo, Santiago (Ediciones Universidad de Salamanca, 2015)
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    Este trabajo presenta las etapas del desarrollo de un nuevo sistema de cámara lidar para la generación de imagen tridimensional. Basado en la técnica de tiempo de vuelo, se mediante la cámara se generan nubes de puntos que ...
  • B-spline basis for adaptive piezoelectric mirror shape reconstruction 

    Sergievskaya, Irina; Royo Royo, Santiago; Ares Rodríguez, Miguel (2009)
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    In this paper we compare RMS fitting error of an experimental wavefront for its Zernike and B-spline approximations. Wavefront shapes are achieved using a commercial piezoelectric deformable mirror. Number of Zernike modes ...
  • Ultracompact vibrometry measurement with nanometric accuracy using optical feedback 

    Jha, Ajit; Azcona Guerrero, Francisco Javier; Royo Royo, Santiago (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2015)
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    The nonlinear dynamics of a semiconductor laser with optical feedback (OF) combined with direct current modulation of the laser is demonstrated to suffice for the measurement of subwavelength changes in the position of a ...
  • Multispectral imaging of healthy and diseased red blood cells using confocal microscopy 

    Rey Barroso, Laura; Roldán, Mónica; Burgos Fernández, Francisco Javier; Isola, Ignacio; Ruiz Llobet, Anna; Gassiot Riu, Susanna; Vilaseca Ricart, Meritxell (International Colour Association (AIC), 2020)
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    Red blood cell disorders represent the most common single-gene defects and pose a major public health problem, particularly in tropical countries, occurring with high frequency. Their diagnose can sometimes be difficult ...
  • 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
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    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 ...

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