Ophthalmic spectacles for characterizing the direction of...

A - Human Necessities – 61 – B

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A61B 3/113 (2006.01) G06F 3/01 (2006.01)

Patent

CA 2761784

The invention relates to ophthalmic spectacles for characterizing the direction of gaze of a wearer. Each lens (1, 2) of the spectacles is provided with output sections for directing a radiation towards the ocular areas (ZD1, ZG1, ZD2, ZG2) of the wearer, in which different portions of an ocular limbus (L) of the wearer are in motion. The lens is further provided with input sections for collecting the portions of said radiation reflected in said ocular areas. A computing unit is also combined with the spectacles in order to determine the direction of gaze of the wearer from detection signals measuring the portions of the radiation that are simultaneously collected by the input sections of the two lenses.

Une paire de lunettes ophtalmiques est adaptée pour caractériser une direction de regard d'un porteur. Chaque verre (1, 2) de la paire de lunettes est muni de sections de sortie pour diriger un rayonnement vers des zones oculaires (ZD1, ZG1, ZD2, ZG2) du porteur, où se déplacent des portions différentes d'un limbe oculaire (L) dudit porteur. Ledit verre est muni en outre de sections d'entrée pour collecter des parties dudit rayonnement réfléchies dans lesdites zones oculaires. Une unité de calcul est aussi associée à la paire de lunettes, pour déterminer la direction de regard du porteur à partir de signaux de détection mesurant les parties de rayonnement qui sont collectées simultanément par les sections d'entrée des deux verres.

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