Abstract:
Une lentille (1) comprend plusieurs surfaces optiques (S 1, S 2 ) qui sont chacune constituées d'une alternance de zones actives (ZA 1 , ZA 2 ) et de zones de séparation (ZS 1 , ZS 2 ). Les zones actives de l'une des surfaces sont situées au droit des zones de séparation de l'autre surface. La forme de l'une au moins des surfaces optiques est alors adaptée dans les zones de séparation pour augmenter des angles aigus qui sont situés à des limites entre zones actives et zones de séparation. La lentille peut ainsi être réalisée avec une exactitude améliorée, par rapport à une fonction optique cible.
Abstract:
A method for mounting an optical lens to be polished Method for mounting an optical lens (10) to be polished on a spindle(20)of a polishing device, the optical lens (10) comprising a first and a second main surface (101, 102), the method comprising: an optical lens (10) providing step (S1), in which an optical lens (10) whose first main surface (101) is to be polished is provided, a mounting step (S2), in which the optical lens (10) is mounted on the spindle(20), wherein, the mounting step (S2) further comprises a support device positioning step (S3), in which a support device (30) is positioned between the spindle(20) and the second surface (102) of the optical lens (10) so as to be rotated by the spindle(20) and to have a contact surface (31) partly in contact with the second main surface (102) of the optical lens (10) that partly extends beyond the second main surface (102) of the optical lens (10).
Abstract:
The invention concerns a process for measuring and/or controlling a polishing process of an ophthalmic element (1) comprising the steps of -manufacturing at least two cavities (2, 3) on the surface of the element to be polished, the depth of the first cavity (2) being smaller than the depth of the second cavity (3) -operating the polishing process -considering the element (1), in order to check that the first cavity (2) is suppressed and that the second cavity (3) is present.
Abstract:
The invention concerns a process for measuring and/or controlling a polishing process of an ophthalmic element (1) comprising the steps of -manufacturing at least two cavities (2, 3) on the surface of the element to be polished, the depth of the first cavity (2) being smaller than the depth of the second cavity (3) -operating the polishing process -considering the element (1), in order to check that the first cavity (2) is suppressed and that the second cavity (3) is present.