Progressive addition lenses

Details Progressive addition lenses Progressive addition lenses

G - Physics

02

C

G02C 7/06 (2006.01)

Patent

CA 2281273

The invention provides progressive addition lenses in which lens unwanted astigmatism is reduced and channel width through the intermediate and near vision zones is increased as compared to conventional progressive addition lenses. This result is achieved by combining a progressive addition surface with a first dioptric add power with at least one optical element that provides additional dioptric add power to the lens.

Cette invention se rapporte à des verres progressifs. Dans ces verres, l'astigmatisme non désiré est réduit et la largeur des voies à travers les zones de vision intermédiaire et proche est accrue par comparaison avec des verres progressifs conventionnels. Ce résultat est obtenu en combinant une surface progressive à un premier flux dioptrique, avec au moins un élément optique qui fournit un flux dioptrique supplémentaire aux verres.

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