Devices and methods for determining the position of a characterizing point of an eye and for tracking the direction of the gaze of a wearer of spectacles

Abstract

The invention relates to a device for determining the position of a characterizing point of an eye of a wearer provided with a spectacle frame (400), including: at least one image sensor apparatus (120); and positioning element for positioning the image sensor device relative to the spectacle frame (400), such that, when the spectacle frame is arranged in a useful position on the head of the wearer, the image sensor apparatus is capable of capturing an image of the eye of the wearer; and element for determining the position of a characterizing point of the eye from the at least one image of the eye of the wearer captured by the image sensor apparatus. The invention also relates to a method for determining the position of a characterizing point of an eye of a wearer, a device and a method for determining the direction of the gaze and a method for determining associated areas of wear of an ophthalmic lens.

Dependencies are inferred from the claim text.