Spectacle lens and manufacturing method therefor

G - Physics – 02 – C

Patent

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G02C 7/02 (2006.01) G02C 13/00 (2006.01)

Patent

CA 2362129

The present invention has an object to provide a spectacle lens which has a more optimized prescription surface, taking into consideration individual wearing conditions, and a manufacturing method therefor. Prescription values, comprising data related to a VR value of each spectacles wearer, and other information required in the design and manufacture of a spectacle lens, are sent via a terminal installed at a spectacles store (ordering party) to a host computer installed at a spectacles processing plant (processing party), these data are processed by the host computer, processing conditions are determined by obtaining an optimized lens form based on an optical model of simulated wearing conditions, a spectacle lens is manufactured by numerically-controlled processing machines and an edger, and delivered to an ordering party.

L'invention concerne des lunettes présentant une face de correction prescrite optimisée en fonction des conditions d'utilisation individuelle, et un procédé de fabrication des lunettes. Des informations comprenant les valeurs prescrites contenant des données relatives à la valeur RV pour chaque utilisateur de lunettes nécessaires à la conception et à la fabrication des lunettes sont transmises par un terminal installé chez un opticien (du côté ordonnateur) à un ordinateur hôte installé chez un fabricant de lunettes (du côté fabricant). Les informations sont traitées par l'ordinateur hôte afin de déterminer la forme des lunettes optimisée sur la base d'un modèle optique dans des conditions d'utilisation simulées et afin de déterminer les conditions de fabrication. Ainsi, les lunettes sont fabriquées par une machine à commande numérique et une unité de taille des bords, puis elles sont livrées à l'ordonnateur.

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