An ophthalmic lens

G - Physics – 02 – C

Patent

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G02C 7/02 (2006.01) G02C 7/04 (2006.01)

Patent

CA 2441766

An ophthalmic lens comprising a diffractive part and a method for designing such a lens. According to the invention the ophthalmic lens further comprises a refractive part comprising at least one surface, which is configured to compensate a passing wavefront at least partly for at least one type of monochromatic aberration introduced by at least one of the optical parts of the eye. Said diffractive part is capable of compensating a passing wavefront at least partly for chromatic aberration introduced by at least one of the optical parts of the eye. Furthermore said refractive and diffractive parts together contribute to a required power of the lens.

La présente invention concerne une lentille ophtalmique comprenant une partie à diffraction et un procédé permettant de concevoir cette lentille. Cette lentille ophtalmique comprend une partie à réfraction constituée d'au moins une surface, agencée de façon à compenser au moins en partie le passage d'une surface d'onde pour au moins un type d'aberration monochromatique introduite par au moins une des parties optiques de l'oeil. La partie à diffraction est capable de compenser au moins en partie le passage d'une surface d'onde pour l'aberration chromatique introduite par au moins une des parties optiques de l'oeil. De plus, ces parties à diffraction et à réfraction contribuent ensemble à la puissance requise de cette lentille.

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