Browsing by Author "Arasa, Josep"
Caum Aregay, Jesús; Arasa, Josep; Royo Royo, Santiago (2009)
Restricted access - publisher's policyEn 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 ...
Royo Royo, Santiago; Arasa, Josep; Caum Aregay, Jesús (2001-12-01)
Restricted access - publisher's policyA 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 ...
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)
Open AccessNowadays, 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 ...
Royo Royo, Santiago; Arasa, Josep; Caum Aregay, Jesús (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2000)
Restricted access - publisher's policyThe 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 ...