METHOD FOR DETERMINING, IN A NATURAL POSTURE, AT LEAST ONE GEOMETRIC/PHYSIOGNOMIC PARAMETER ASSOCIATED WITH THE MOUNTING OF AN OPHTHALMIC LENS IN A SPECTACLE FRAME

• Main Authors: DELZERS JEAN, HADDADI AHMED
• Format: Patent
• Language: English; Korean
• Published: 13.01.2014
• Subjects: CONTACT LENSES; DIAGNOSIS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; OPTICS; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES; SURGERY

Method for determining, in a natural posture, at least one geometric/physiognomic parameter associated with the mounting of an ophthalmic lens in a spectacle frame intended to be worn by a wearer. The method includes: (a) capturing at least one substantially frontal image of the wearer's head; (b) determining a measured value of an angle of inclination during the capturing step, which depends on the inclination of the wearer's head about a main axis perpendicular to a sagittal plane of the wearer's head; (c) determining a reference value of the angle of inclination corresponding to a natural posture of the wearer's head; and (d) determining the required geometric/physiognomic parameter on the basis of the substantially frontal image captured and as a function of the difference between the measured value of the angle of inclination determined in step (b) and the reference value of the angle of inclination determined in step (c).