| 摘要 |
PCT No. PCT/DE92/00550 Sec. 371 Date Dec. 30, 1993 Sec. 102(e) Date Dec. 30, 1993 PCT Filed Jul. 1, 1992 PCT Pub. No. WO93/01024 PCT Pub. Date Jan. 21, 1994Disclosed is a process for the production of an edged ophthalmic lens wherein an ophthalmic lens which initially is finished on one side and not yet edged according to a prescribed disk shape, i.e. a so-called blank having only one finished effective surface, is produced and the so-called prescription surface is produced in another manufacturing step, if need be, including optimization of the critical thickness. The invented process is distinguished by the combination of the following steps: the prescribed disk shape is stored as a set of data, the position of the second surface (prescription surface) is computed, if need be, including the minimization of the critical thickness from the stored set of data of the prescribed disk shape and the contour of the already finished surface of said blank, subsequently the prescription surface is produced with simultaneous or previous preliminary edging of the blank according to the prescribed disk shape, following production of the prescription surface, the lens is edged, facetted and its perimeter polished in a gripping means utilizing the stored set of data.
|
