Convex lens and stepped prism combined glasses

Details Convex lens and stepped prism combined glasses Convex lens and stepped prism combined glasses

G - Physics

02

C

G02C 7/08 (2006.01) G02B 3/08 (2006.01) G02C 7/14 (2006.01)

Patent

CA 2374734

The present invention relates to a spectacle for the person to watch something close-up, of which the optical unit of the spectacles comprises of a lens and a certain number of prisms having bottom surfaces toward the nose integrally. The optical unit is made by informing integrally with molding optical thermoset or thermoplastic resin, hardening and coating film for anti-reflect. The power of the optical unit is showed by the diopter of lens D and diopter of prism .DELTA..

L'invention concerne des lunettes permettant de rapprocher les objets observés et formées d'une lentille que l'on peut changer et de prismes dont la surface inférieure repose sur les deux côtés du nez de l'utilisateur. Afin de diminuer l'épaisseur et le poids des lunettes, les prismes sont disposés en gradins. Les lunettes sont en résine thermodurcissable et thermoplastique formées par injection à chaud, durcies, traitées par film ce qui leur confère une propriété antireflet. La puissance des lunettes est représentée par la dioptrie de la lentille D et la dioptrie du prisme .DELTA..

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