Progressive addition lenses with varying power profiles

Details Progressive addition lenses with varying power profiles Progressive addition lenses with varying power profiles

G - Physics

02

C

G02C 7/02 (2006.01)

Patent

CA 2333298

The invention provides lenses, as well as methods for their design and production, in which the power distribution between the distance and near vision zone substantially meets the requirements of the wearer's eye path and refractive power. This power distribution is obtained without introducing additional unwanted astigmatism.

L'invention se rapporte à des lentilles ainsi qu'à des procédés de conception et de production de ces lentilles. Lesdites lentilles se caractérisent en ce que la répartition de la puissance entre la zone de vision éloignée et la zone de vision rapprochée satisfait sensiblement les exigences relatives au chemin oculaire de l'utilisateur et à la puissance de réfraction. Cette répartition de puissance est obtenue sans introduction d'astigmatisme indésirable supplémentaire.

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