Method for Providing to an Eye of a Wearer a Customizable Ophthalmic Lens and Associated Active System of Vision

摘要

Providing to an eye a customizable ophthalmic lens comprising a transparent set of electroactive cells (24) juxtaposed to a lens surface for providing an optical phase-shift distribution function. The method includes providing (402) a reference phase-shift distribution function adapted to provide a given dioptric function DF(α, β); determining (404) the actual gaze direction (αa, βa); choosing (406) a reference gaze direction (αR, βR); calculating (408) an actual point Pa at the intersection between the actual gaze direction and the transparent set of electroactive cells, and a reference point PR at the intersection between the reference gaze direction and the transparent set of electroactive cells; calculating (410) a modified phase-shift distribution function by shifting the reference phase-shift distribution function according to a vector {right arrow over (PRPa)}; and activating (412) the electroactive cells according to the modified phase-shift distribution function.

主权项

1. A method for providing to an eye of a wearer a customizable ophthalmic lens comprising a transparent set of electroactive cells juxtaposed to a surface of the said lens, said set of cells being activable and suitable for providing an optical phase-shift distribution function, every electroactive cell having dimensions such that it can be fully comprised in a 70 μm diameter circle, the method comprising the steps of:
providing a reference phase-shift distribution function adapted to provide to the wearer a given dioptric function DF(α, β), said reference phase-shift distribution function being expressed with respect to a reference point PR, the reference phase-shift function having a null gradient at said reference point PR; determining the actual gaze direction (αa, βa) of the eye of the wearer when wearing the customizable ophthalmic lens; choosing a reference gaze direction (αR, βR) for positioning said reference point PR; calculating an actual point Pa and the reference point PR, said actual point Pa being the intersection between the actual gaze direction of the eye of the wearer and the transparent set of electroactive cells and said reference point PR being located at the intersection between the reference gaze direction of the eye of the wearer and the transparent set of electroactive cells; calculating a modified phase-shift distribution function by shifting the reference phase-shift distribution function according to a vector; and activating the electroactive cells according to said modified phase-shift distribution function so as to provide a customized ophthalmic lens to the eye of the wearer.