Online wavefront measurement and display

Details Online wavefront measurement and display Online wavefront measurement and display

G - Physics

06

T

G06T 7/00 (2006.01)

Patent

CA 2539944

A fast algorithm is presented which allows for substantially simultaneous acquisition, analysis, and display of a wavefront centroid image, referred to as online aberrometry. A method embodiment involves determination of an average, or most frequently occurring, wavefront aberration over a selected time interval, e.g., 20 sec. Online pupil diameter measurement allows analysis of wavefront aberration as a function of changing pupil size. A wavefront measuring apparatus is disclosed that supports online aberrometry.

La présente invention concerne un algorithme rapide qui permet l'acquisition, l'analyse et l'affichage pratiquement simultanés d'une image centroïde de front d'onde, qualifiés d'aberrométrie en ligne. Dans un mode de réalisation, une aberration du front d'onde moyenne, ou se produisant le plus fréquemment, sur un laps de temps choisi, par ex. 20 sec, est déterminée. Une mesure de diamètre de pupille en ligne permet l'analyse de l'aberration du front d'onde en tant que fonction du changement de taille de la pupille. Un appareil de mesure du front d'onde permettant la mise en oeuvre de cette aberrométrie en ligne est également décrit.

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