Abstract:
The invention relates to a method for preparing an ophthalmic lens for the purpose of mounting it in a surround (110) of a spectacle frame having an inner face (114) provided with a fitment rib or groove (111) and bordered by a rear edge (116) turned towards the wearer and an opposite front edge (115), the method comprising a first step of acquiring the geometry of an acquired longitudinal profile (P1) running along the said inner face, and a step of milling the ophthalmic lens with formation on its rim of a fitment rib or groove extending along a deduced longitudinal profile whose geometry is calculated according to the geometry of the said acquired longitudinal profile. According to the invention, the method comprises a second step of acquiring a geometric characteristic (H1) which is relative to the position of the fitment rib or groove relative to the said front and/or rear edge of the frame, the geometry of the deduced longitudinal profile then also being calculated according to the said geometric characteristic.
Abstract:
SOURCE LUMINEUSE POUR APPAREIL DE MESURE, AU MOYEN DE REFLETS CORNEENS, DES PARAMETRES OCULAIRES D'UN SUJET. LA SOURCE 17 COMPORTE UNE PREMIERE ZONE EMISSIVE ETENDUE 21 GLOBALEMENT ANNULAIRE ADAPTEE A PRODUIRE SUR LA CORNEE DE CHAQUE OEIL DU SUJET UN REFLET OBSERVABLE PAR L'OPERATEUR DE L'APPAREIL ET UNE SECONDE ZONE EMISSIVE PONCTUELLE 24 DISPOSEE AU CENTRE DE LA PREMIERE ZONE EMISSIVE 21 ET CONSTITUANT LE POINT DE FIXATION DU REGARD DU SUJET.
Abstract:
L'invention concerne un appareil de lecture d'un cercle (110) ou d'une arcade d'une monture de lunettes, comportant des moyens de maintien de la monture de lunettes et un palpeur (10) qui est monté pour tourner autour d'un axe de rotation (A1) afin de suivre un profil longitudinal (P1) du cercle ou arcade de la monture de lunettes maintenue dans les moyens de maintien.Selon l'invention, le palpeur est équipé d'une tête de lecture (12) comportant un patin d'appui (15) en V qui est ouvert dans une direction opposée audit axe de rotation et qui est adapté à être engagé sur le cercle ou arcade pour coulisser le long de ce dernier.
Abstract:
Device for measuring the ocular parameters of a patient, especially parameters for mounting ophthalmic lenses on a spectacle frame with a view to their adaptation to the patient, wherein a reference mark assembly includes two pairs of height reference marks respectively associated to the two eyes of the patient, and distance reference marks each associated to a lateral mirror so as to receive the profile image of the eye of the patient and of the lens and its associated rim and wherein the device further includes a measuring device to evaluate the position of the different above-mentioned reference marks with respect to the patient's eyes, to the lens and associated rim, and to visualize the results of this evaluation.
Abstract:
Luminous source of device for measuring, by means of corneal reflections, the ocular parameters of a subject. The source comprises a first extended emitting zone globally annular adapted to produce on the cornea of each eye of the subject a reflection observable by the operator of the device and a second punctual emitting zone disposed at the centre of the first emitting zone and constituting the fixation point of the subject's stare.