Enviaments recents

  • Extended depth of focus intraocular lens: Chromatic performance 

    Millán Garcia-Varela, M. Sagrario; Vega Lerín, Fidel (2017-09-01)
    Article
    Accés obert
    We describe a first-and-second-diffractive-order intraocular lens ((1st,2nd)DIOL) within the class of hybrid refractive-diffractive designs for intraocular lenses (IOLs) and analyse its properties of focus extension and ...
  • Halos and multifocal intraocular lenses: origin and interpretation 

    Alba Bueno, Francisco; Vega Lerín, Fidel; Millán Garcia-Varela, M. Sagrario (Elsevier, 2014-11-04)
    Article
    Accés obert
  • Spectral radiance of blue light filters on ophthalmic lenses 

    Fernández Valls, Cristina; Argilés Sans, Marc; Pérez Cabré, Elisabet; Cardona Torradeflot, Genís (2017-05-29)
    Article
    Accés obert
    As a result of the recent improvement in light-emitting diode (LED) technology, the displays of the vast majority of electronic devices are now illuminated by LEDs. There are several advantages of this type of light source ...
  • Changes in peripheral refraction, higher-order aberrations, and accommodative lag with a radial refractive gradient contact lens in young myopes 

    Pauné Fabre, Jaime; Thivent, Solène; Armengol Cebrian, Jesús; Quevedo Junyent, Luisa Jesús; Faira Ribeiro, Miguel; González-Méijome, José Manuel (Lippincott Williams & Wilkins, 2016-01-22)
    Article
    Accés obert
    Purpose: To evaluate changes in the peripheral refraction (PR), visual quality, and accommodative lag with a novel soft radial refractive gradient (SRRG) experimental contact lens that produces peripheral myopic ...
  • Nanoporous silicon-based surface patterns fabricated by UV laser interference techniques for biological applications 

    Recio Sánchez, Gonzalo; Pelaez de Fuentes, Ramon Javier; Vega Lerín, Fidel; Martín Palma, Raúl José (2016-05-04)
    Article
    Accés obert
    The fabrication of selectively functionalized micropatterns based on nanostructured porous silicon (nanoPS) by phase mask ultraviolet laser interference is presented here. This single-step process constitutes a flexible ...
  • Roadmap on optical security 

    Javidi, Bahram; Pérez Cabré, Elisabet; Millán Garcia-Varela, M. Sagrario (Institute of Physics (IOP), 2016)
    Article
    Accés obert
  • Ground-based hyperspectral analysis of the urban nightscape 

    Alamús, Ramón; Bará Viñas, Salvador; Corbera, Jordi; Escofet Soteras, Jaume; Palà, Vicenç; Pipia, Luca; Tardà, Anna (2017-02-28)
    Article
    Accés obert
    Airborne hyperspectral cameras provide the basic information to estimate the energy wasted skywards by outdoor lighting systems, as well as to locate and identify their sources. However, a complete characterization of the ...
  • Real-Time Non-Intrusive Assessment of Viewing Distance During Computer Use 

    Argilés Sans, Marc; Cardona Torradeflot, Genís; Pérez Cabré, Elisabet; Pérez Magrané, Ramon; Morcego Seix, Bernardo; Gispets Parcerisas, Joan (2016-10-22)
    Article
    Accés obert
    Purpose: To develop and test the sensitivity of an ultrasound-based sensor to assess the viewing distance of visual display terminals operators in real-time conditions. Methods: A modified ultrasound sensor was attached ...
  • Polychromatic image performance of diffractive bifocal intraocular lenses: longitudinal chromatic aberration and energy efficiency 

    Millán Garcia-Varela, M. Sagrario; Vega Lerín, Fidel; Ríos, Inmaculada (2016-04-01)
    Article
    Accés obert
    PURPOSE. The study evaluated—theoretically and experimentally—the longitudinal chromatic aberration (LCA) and through-focus energy efficiency (TF-EE) of diffractive–refractive bifocal intraocular lenses (2f-IOLs). METHODS. ...
  • Calculating spectral irradiance indoors 

    Bará Viñas, Salvador; Escofet Soteras, Jaume (2016-09-01)
    Article
    Accés obert
    The spectral composition of the light that reaches any indoor work plane depends on the characteristics of the light sources and the spectral reflectances of the surrounding surfaces due to the multiple reflections ...

Mostra'n més