Patent ID: 6010218
Filing Date: 2000-01-04
Classification: A61F,G02C

Abstract:
A dual lens eyeglass which is optically corrected in an as-worn orientation, comprising:an eyeglass frame for suspending dual lenses in the as-worn orientation with respect to each of a wearer's right and left normal line of sight;a left spherical, non-glass eyeglass lens attached to the frame to intercept the wearer's normal line of sight through the wearer's left eye in the as-worn orientation, said left lens being vertically and horizontally tapered;a right spherical, non-glass eyeglass lens attached to the frame to intercept the wearer's normal line of sight through the wearer's right eye in the as-worn orientation, said right lens being vertically and horizontally tapered;wherein each of said lenses exhibits both wrap and rake in the as-worn orientation; andsaid right and left lenses having right and left non-coincident optical centerlines, respectively, said right and left optical centerlines displaced vertically at the front lens surface from the normal line of sight in the as worn orientation by a distance within the range of from about 0.25 to about 0.75 inches corresponding to the rake to correct prism otherwise induced by said rake; whereineach of said lenses is oriented relative to the wearer's normal line of sight to exhibit no more than about 1/8 diopters prismatic distortion and no more than about 1/8 diopters refractive power in the as-worn orientation.