Patent ID: 7896493

Claim:
A method having the following steps: predefining a bridge width (b), a glass length (I) and a frame glass angle (φ F ) as spectacle frame data; predefining a base curve (BK) and a nasal and temporal facet position (a Fn , a Ft ) as spectacle lens data; predefining an interpupillary distance (p L , p R ) of the user as user data; determining a horizontal tilt angle (φ G ) of the spectacle lens in the wearing position at a reference point, wherein the reference point is the intersection of the eye-side horizontal main beam in the neutral viewing direction (NBR) of the user with the object-side face of the spectacle lens, the horizontal tilt angle (φ G ) is the angle which is enclosed by a horizontal tangent of the object-side face of the spectacle lens at the reference point (B) with a straight horizontal reference line (HR), and the straight horizontal reference line (HR) lies in a plane which is perpendicular to the horizontal main beam in the neutral viewing direction (NBR) of the user; and manufacturing the defined spectacle lens.