13-12-2018 дата публикации
Номер: US20180354212A1
Принадлежит:
Disclosed is a semi-finished lens that includes a blank formed in a first material having a first hardness, the blank having an outline, a first face and a second face configured to be surfaced so as to constitute a first optical face of the ophthalmic lens, and a top layer formed in a second material having a second hardness greater than the first hardness, the top layer having an outline, a first face and a second face, the second face of the top layer being arranged on the first face of the blank. The outline of the top layer is equal to or included in the outline of the blank, and satisfies to a predetermined dimensional selection criterion involving the final outline of the ophthalmic lens. 122111111111110. A semi-finished lens () to be machined for forming an ophthalmic lens (; ) dimensioned for the ophthalmic lens (; ) to be mounted in a spectacle frame () , wherein:{'b': 22', '23', '23', '33', '26', '27', '27', '19', '11', '111', '24', '24', '34', '29', '30', '30', '24', '26, 'the semi-finished lens () comprises (a) a blank () formed in a first material having a first hardness, the blank () having an outline (), a first face () and a second face (), the second face () being configured to be surfaced so as to constitute a first optical face () of the ophthalmic lens (; ), and (b) a top layer () formed in a second material having a second hardness, the second hardness being greater than the first hardness, the top layer () having an outline (), a first face () and a second face (), the second face () of the top layer () being arranged on the first face () of the blank;'}{'b': 34', '24', '33', '23, 'the outline () of the top layer () is equal to or included in the outline () of the blank (); and'}{'b': 34', '24', '32', '11', '111, 'the outline () of the top layer () satisfies to a predetermined dimensional selection criterion involving the final outline () of the ophthalmic lens (; ).'}23424321111133233211111. A semi-finished lens according to wherein claim 1 , ...
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