Four zone multifocal spectacle lenses

Details Four zone multifocal spectacle lenses Four zone multifocal spectacle lenses

G - Physics

02

C

G02C 7/02 (2006.01) G02C 7/06 (2006.01)

Patent

CA 2525787

The present invention provides multifocal lenses containing at least four zones of different refractive power. The zones are positioned such that the wearer is able to use the inferior-most portion of the lens to more clearly, as compared to conventional multifocal lenses, view objects at distances more than 45 cm from the eye.

L'invention concerne des verres progressifs comportant au moins quatre zones présentant des pouvoirs de réfraction différents. Ces zones sont placées de façon à pouvoir utiliser la partie la plus inférieure du verre afin de visualiser des objets distants de l'oeil de plus de 45 cm, par rapport à l'état actuel de la technique.

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