Decentered noncorrective lens for eyewear

Details Decentered noncorrective lens for eyewear Decentered noncorrective lens for eyewear

G - Physics

02

C

G02C 7/02 (2006.01) A42B 3/22 (2006.01) A61F 9/02 (2006.01) B29D 11/00 (2006.01) G02C 5/00 (2006.01)

Patent

CA 2212656

Disclosed is an optically corrected lens for nonprescription, dual lens eyeglasses. In a preferred embodiment, the anterior surface of the lens lies on a portion of a first sphere having a first center. The posterior surface of the lens lies on the surface of a second sphere having a second center. The first and second centers are offset from one another to provide a tapered lens. The lens is oriented on the head of the wearer by a frame that maintains the lens in a position such that a line drawn through the first and second centers is maintained substantially in parallel to the normal sight line of the wearer. Methods of making the lenses, and eyewear incorporating the lenses, are also disclosed.

L'invention concerne un verre corrigé optiquement conçu pour des lunettes non médicales. Dans un mode de réalisation préféré, la surface antérieure du verre repose sur une partie d'une première sphère possédant un premier centre. La surface postérieure du verre repose sur la surface d'une seconde sphère possédant un second centre. Les premier et second centres sont décalés l'un par rapport à l'autre, de manière à créer un verre rétréci. Le verre est orienté sur la tête de l'utilisateur au moyen d'une monture maintenant ce verre dans une position telle qu'une ligne passsant par les premier et second centres est maintenue sensiblement parallèle à la ligne de vision normale de l'utilisateur. L'invention concerne également des procédés de fabrication de ces verres, ainsi que des articles optiques comportant ces verres.

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