Method and device for determining the eye's rotation center

Details Method and device for determining the eye's rotation center Method and device for determining the eye's rotation center

A - Human Necessities

61

B

A61B 3/113 (2006.01)

Patent

CA 2601877

The invention relates to a device for determining the rotation center of the eye of a person with respect to a point of reference assigned thereto or to the part of the spectacles thereof. The inventive device makes it possible to determine the visual axis of said person in at least two non-parallel directions by means of a visualised target and to define an optimal point called a crossing point of said axes in the form of the eye's rotation center, wherein at least to positions with respect to said target (2) and the person's head are measured. According to the invention, said target consists of a light source and is placed at the end of a tubular support (3) whose other end is placeable in front of the person's eye and which carries a first position sensor (4), wherein a second position sensor (7) is placeable on the person's head.

L'invention concerne un dispositif pour la détermination du centre de rotation d'un oeil (CRO) d'une personne par rapport à un repère lié à la personne ou à sa paire de lunettes, permettant la détermination de l'axe visuel de cette personne dans au moins deux directions non parallèles au moyen d'une cible visualisée et la définition d'un point optimal dit de croisement de ces axes comme centre de rotation de l'AEil, au moins deux positions relatives de cette cible (2) et de la tête de la personne étant mesurées. Selon l'invention, ladite cible est constituée d'une source de lumière et est disposée à une extrémité d'un support tubulaire (3) dont l'autre extrémité est destinée à être disposée en face de l'AEil de la personne, ce support portant un premier capteur de position (4) , un second capteur de position (7) étant destiné à être placé sur la tête de la personne.

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