Abstract:
The invention relates to a method for trimming ophthalmic lenses in which an optical reference frame of the lens concerned and/or a trimming instruction is determined by means of a centration and/or trimming characteristic relating to the lens or to a related frame. According to the invention, the method comprises: a step in which a processing unit of a workshop (1) reads out from a remote register (200) in which each record is associated with a frame type and/or lens type, and comprises at least one centration and/or trimming characteristic of this type, with a search for a record corresponding to the type to which the frame and/or the lens concerned belongs, then, if no corresponding record is found in the register, a step of determining said at least one centration and/or trimming characteristic of the frame and/or of the lens in question, and a step of storing, in a new record of the register, said at least one centration and/or trimming characteristic.
Abstract:
In a grinding machine for beveling or grooving an ophthalmic lens in guided or non-guided modes, the support shaft for the grinding tool is mounted to be movable relative to that carrying the ophthalmic lens to be processed. Associated with it are displacement means adapted to procure its guided displacement parallel to its axis. Between this mobile support shaft and the associated displacement means are selectively engageable coupling means. These procure either axial displacement of the mobile support shaft by virtue of the drive action of said displacement means or disengagement relative to said displacement means at least.
Abstract:
L'invention concerne un procédé de détourage de lentilles ophtalmiques dans lequel on détermine un référentiel optique de la lentille concernée et/ou une consigne de détourage de cette lentille au moyen d'une caractéristique de centrage et/ou de détourage relative à la lentille ou à une monture associée à la lentille.Selon l'invention, le procédé comprend :- une étape de lecture par une unité de traitement d'un atelier (1) d'un registre distant (200) dont chaque enregistrement est associé à un type de montures et/ou de lentilles, et comprend au moins une caractéristique de centrage et/ou de détourage de ce type, avec une recherche d'un enregistrement correspondant au type auquel appartient la monture et/ou la lentille concernée, puis, si aucun enregistrement correspondant du registre n'est trouvé,- une étape de détermination de ladite au moins une caractéristique de centrage et/ou de détourage de la monture et/ou de la lentille concernée, et- une étape de mise en mémoire, dans un nouvel enregistrement du registre, de ladite au moins une caractéristique de centrage et/ou de détourage.
Abstract:
In a grinding machine for beveling or grooving an ophthalmic lens in guided or non-guided modes, the support shaft for the grinding tool is mounted to be movable relative to that carrying the ophthalmic lens to be processed. Associated with it are displacement means adapted to procure its guided displacement parallel to its axis. Between this mobile support shaft and the associated displacement means are selectively engageable coupling means. These procure either axial displacement of the mobile support shaft by virtue of the drive action of said displacement means or disengagement relative to said displacement means at least.