| 摘要 |
The invention relates to method for designing and machining an ophthalmic lens, a method for producing a bevel-edged lens, and the corresponding lenses. More specifically, the invention relates to a method for designing an ophthalmic lens, comprising steps of: defining a central zone (5) with a central periphery (3) matching the periphery of a frame; defining a temporal line (11) that divides the central zone into a nasal zone, with a useful periphery (15), and temporal zone; and determining a prescription for a user. The temporal line is outside a cone (7) with an opening angle of 30º, the apex of which is at the centre of rotation of the user's eye and the axis of which is the optical axis. The thickness of the lens is optimised according to the thickness of the periphery of the nasal zone. Subsequently, a transition zone (21) is defined, which extends between the useful periphery and the outer periphery (27) of the lens. |
