Wavefront sensor with off-axis illumination

A - Human Necessities – 61 – B

Patent

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Details

A61B 3/12 (2006.01) A61B 3/15 (2006.01) G01M 11/02 (2006.01)

Patent

CA 2388775

Wavefront aberrations in an eye are detected by illuminating the retina, receiving the light reflected by the retina and using a Hartmann-Shack detector (112) or the like to detect the aberrations. The illuminating light (102) is applied to the eye of the optical axis of the eye (A). Light reflected from the cornea and light reflected from the retina travel in different directions. The former can be blocked with a stop (108), while the latter is passed to the detector.

Les aberrations de front d'onde dans un oeil sont détectées par illumination de la rétine, réception de la lumière réfléchie par la rétine et utilisation d'un détecteur de Hartmann-Shack (112) ou analogue pour détecter les aberrations. La lumière d'illumination (102) est appliquée à l'oeil hors de l'axe optique de l'oeil (A). La lumière réfléchie par la cornée et la lumière réfléchie par la rétine se déplacent dans des sens différents. La première peut être bloquée par un écran d'arrêt (108) tandis que la seconde est transmise au détecteur.

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