Patent ID: 7614742

Claim:
Method for producing ophthalmic lenses and other shaped bodies having optically active surfaces according to a general or individual prescription, including the use of semi-finished parts produced by chipless forming processes such as casting, injection moulding or compression moulding by means of moulds and dies, followed by mechanical manufacturing steps such as milling, turning, grinding and polishing, characterised by producing plastic blanks ( 41 ) by chipless forming processes, with one lens face of the lens as an optically active surface as well as a shaped edge ( 43 ) being formed integral with said plastic blanks ( 41 ) to produce semi-finished parts ( 41 ), clamping the semi-finished parts by means of their shaped edge ( 43 ) into processing machines and producing an ophthalmic lens ( 47 ) or shaped body by machining and smoothing the other lens face ( 45 ) to obtain desired surface geometry and quality and subjecting the ophthalmic lens ( 47 ) or shaped body to further processing, wherein the clamped shaped edge ( 43 ) supports and mechanically stabilizes the ophthalmic lens ( 47 ) or shaped body during the further processing, and separating the ophthalmic lens ( 47 ) or shaped body from the shaped edge ( 43 ) at the end of processing.