Process for fabricating a surface of an ophthalmic lens, installation for implementing the process and ophthalmic lens obtained by the process

A process of fabricating a surface of an ophthalmic lens in accordance with a given prescription, including the following steps:

• a) machining said surface by removing material by moving a cutting tool along a continuous trajectory in a surface envelope to be achieved to form grooves, two adjacent grooves being spaced by a constant pitch from 0.01 mm to 3 mm, to obtain a surface having an arithmetic mean roughness Ra from approximately 0.1 μm to approximately 0.7 μm, and
• b) smoothing the machined surface by moving a smoothing tool along a continuous trajectory formed of passes within the surface envelope to be achieved, two adjacent passes being spaced by a constant pitch from 0.2 mm to 3 mm, to eliminate the undulations of the machined surface, formed by said grooves, to reduce fractures and to modify the roughness of that machined surface to obtain a smoothed surface having an arithmetic mean roughness Ra less than 0.1 μm.