Enviaments recents

  • Moving towards the maximum speed in stepping motors by means of enlarging the bandwidth of the current controller 

    Arias Pujol, Antoni; Caum Aregay, Jesús; Griñó Cubero, Robert (2016-12-01)
    Article
    Accés restringit per política de l'editorial
    This paper pursues to maximise the mechanical speed when using stepping motors (SM) without position sensors in order to achieve a rapid-response manufacturing whenever any equipment based on such electrical machines is ...
  • Does the Badal optometer stimulate accommodation accurately? 

    Aldaba Arévalo, Mikel; Otero Molins, Carles; Pujol Ramo, Jaume; Atchison, David A. (2016-10-23)
    Article
    Accés obert
  • Response for light scattered in the ocular fundus from double-pass and Hartmann–Shack estimations 

    García Guerra, Carlos Enrique; Aldaba Arévalo, Mikel; Arjona Carbonell, Mª Montserrat; Díaz Doutón, Fernando; Martínez Roda, Juan Antonio; Pujol Ramo, Jaume (2016-10-06)
    Article
    Accés obert
    Double-pass (DP) and Hartmann--Shack (HS) are complementary techniques based on reflections of light in the ocular fundus that may be used to estimate the optical properties of the human eye. Under conventional data ...
  • Double-pass technique and compensation-comparison method in eyes with cataract 

    Martínez Roda, Juan Antonio; Vilaseca Ricart, Meritxell; Ondategui Parra, Juan Carlos; Almudí Cortés, Lorena; Asaad Ammaar, Mouafk; Mateos Pena, Lorena; Arjona Carbonell, Mª Montserrat; Pujol Ramo, Jaume (2016-10-30)
    Article
    Accés obert
    PURPOSE To clinically assess the objective scatter index (OSI) obtained from double-pass images and the log(s) parameter measured with the direct compensation-comparison psychophysical technique in eyes with cataract. ...
  • Comparison of the Adaptive Optics Vision Analyzer and the KR-1 W for measuring ocular wave aberrations 

    Otero Molins, Carles; Vilaseca Ricart, Meritxell; Arjona Carbonell, Mª Montserrat; Martínez Roda, Juan Antonio; Pujol Ramo, Jaume (2016-07-19)
    Article
    Accés obert
  • Frequency-Modulated Optical Feedback Interferometry for Nanometric Scale Vibrometry 

    Jha, Ajit; Azcona Guerrero, Francisco Javier; Royo Royo, Santiago (2016-02-18)
    Article
    Accés obert
    We demonstrate a novel method that makes an efficient use of laser nonlinear dynamics when subject to optical self-injection for subwavelength displacement sensing purposes. The proposed methodology combines two different ...
  • Current Developments on Optical Feedback Interferometry as an All-Optical Sensor for Biomedical Applications 

    Perchoux, Julien; Quotb, Adam; Atashkhooei, Reza; Azcona Guerrero, Francisco Javier; Ramírez Miquet, Evelio E.; Bernal, Olivier; Jha, Ajit; Luna Arriaga, Antonio; Yáñez Alvarado, Carlos René; Caum Aregay, Jesús; Bosch, Thierry; Royo Royo, Santiago (2016-05-13)
    Article
    Accés obert
    Optical feedback interferometry (OFI) sensors are experiencing a consistent increase in their applications to biosensing due to their contactless nature, low cost and compactness, features that fit very well with current ...
  • Microcantilever Displacement Measurement Using a Mechanically Modulated Optical Feedback Interferometer 

    Azcona Guerrero, Francisco Javier; Jha, Ajit; Yáñez Alvarado, Carlos René; Atashkhooei, Reza; Royo Royo, Santiago (2016-06-29)
    Article
    Accés obert
    Microcantilever motion detection is a useful tool for the characterization of the physical, chemical and biological properties of materials. In the past, different approaches have been proposed and tested to enhance the ...
  • Effects of aging on optical quality and visual function 

    Martínez Roda, Juan Antonio; Vilaseca Ricart, Meritxell; Ondategui Parra, Juan Carlos; Aguirre, Montserrat; Pujol Ramo, Jaume (2016-09-02)
    Article
    Accés obert
    Background: We assessed the effects of aging on visual function and optical quality in a healthy adult population and provide reference values for different age ranges. Methods: We conducted a prospective study with 198 ...
  • Spectrally tunable light source based on light-emitting diodes for custom lighting solutions 

    Burgos Fernández, Francisco Javier; Vilaseca Ricart, Meritxell; Perales Romero, Esther; Herrera Ramírez, Jorge Alexis; Martínez Verdú, Francisco Miguel; Pujol Ramo, Jaume (2016-05-06)
    Article
    Accés obert
    This study describes a novel spectral LED-based tunable light source used for customized lighting solutions, especially for the reconstruction of CIE (Commission Internationale de l’Éclairage) standard illuminants. ...

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