Abstract: A device for acquiring images of a pair of spectacles, including a flat surface defined by an outline having a known shape and dimensions, the flat surface having at least, on the periphery thereof: —a straightening, —a size reference, and in the centre: —an acquisition area having a homogenous, non-reflective colour, the acquisition area including at least two openings intended to support the legs of the pair, and at least one position marker representing the pupils of a wearer, so as to facilitate the height positioning of the spectacle lenses in the acquisition area.

Abstract: A method for determining ophthalmic parameters for a given frame and a given wearer, including: a) the given wearer is fitted with said given frame; b) providing a device including a first projecting mean able to project a pattern of optical radiation onto the face of the wearer, a first camera able to record said pattern of optical radiation, a processing device able to processes the image of the pattern in order to generate a depth map of the face of the wearer, a screen able to display the images recorded by said first camera and a light source able to illuminate the pupils of the wearer, c) recording simultaneously a depth map of the face of the wearer and a picture of the face of the wearer while said light source is illuminating the pupils of the wearer.

Abstract: The disclosure relates to a method for selecting progressive ophthalmic lenses for a given frame and wearer, the progressive ophthalmic lenses having one area for distance vision and one area for near vision, said given frame having two recesses suitable for receiving a progressive ophthalmic lens, respectively, said two recesses defining a recess midplane. The method includes the following steps: a) fitting said wearer with said given frame; b) determining the position of a first point of intersection between a first direction of the gaze of said wearer in a distance vision posture and said recess midplane; c) determining the position of a second point of intersection between the gaze of said wearer in a near vision posture and said recess midplane; d) assessing the distance between said intersection points; and, e) selecting progressive ophthalmic lenses in which the progression length corresponds to said distance assessed between said intersection points.

Abstract: The present invention relates to a photographic lighting system for tactile tablet including a first dorsal camera noteworthy in that said system can have a removable dorsal protective shell and a light source. According to a variant, the shell and the light source are furnished with connection capabilities allowing removable fixing of the light source to said shell. Preferably, the connection means are magnets. Preferred use in connection with a measurement capture computer program for the optical centring of lenses in a spectacles frame as a function of the physiognomy of the wearer of said frames and of the characteristics of said frames.

Abstract: A method for the on-line selection of virtual eyeglass frames, of the type in which the virtual frame is an image designed to be superimposed on a first image of a face, is provided wherein the images being recorded at the same scale as each other in order to be displayed simultaneously in such a way as to produce a representation of the face wearing the virtual frame. The method includes the steps of a second image of the face wearing a reference frame is recorded, the second image displayed at the scale is processed to determine a datum giving the vertical position of the reference frame on the face, and the image of the virtual frame is superimposed on the first image of the face using the datum, so that the relative vertical positions of the virtual frame and the face on the one hand, and of the reference frame and the face on the other, correspond exactly.

Abstract: The invention relates to a method for measuring the curve of a spectacle frame (4) comprising the following operations: determining the position of a first reference mark (18) defining the mid plane of the spectacle frame (4); determining the position of a second reference mark (20) defining the orientation of a spectacle lens holder relative to said mid plane; and measuring the angle between said first and second reference marks. The invention also relates to a device for carrying out the method.

Abstract: The disclosure relates to a method for selecting progressive ophthalmic lenses for a given frame and wearer, the progressive ophthalmic lenses having one area for distance vision and one area for near vision, said given frame having two recesses suitable for receiving a progressive ophthalmic lens, respectively, said two recesses defining a recess midplane. The method includes the following steps: a) fitting said wearer with said given frame; b) determining the position of a first point of intersection between a first direction of the gaze of said wearer in a distance vision posture and said recess midplane; c) determining the position of a second point of intersection between the gaze of said wearer in a near vision posture and said recess midplane; d) assessing the distance between said intersection points; and, e) selecting progressive ophthalmic lenses in which the progression length corresponds to said distance assessed between said intersection points.

Abstract: The present disclosure relates to an apparatus for determining the orientation of ophthalmic lenses (20, 22). The apparatus includes a recording device and a reference-frame unit that can be fitted onto a frame (14) while a patient is wearing it. Said frame has two half parts (11, 13) and a central bridge (15). The reference-frame unit includes a first element forming an arch (24) that has a central portion (26) indicated by a first reference mark (54), and a second element (56) indicated by a second reference mark (58), mounted on said frame. According to the disclosure, the apparatus includes two cameras (60,62) separated vertically from each other and pointing at the eyes from two angles of view (64, 66); and the two cameras (60, 62) enable two images of said reference-frame unit (24, 56) to be recorded simultaneously in order to evaluate the relative positions of the two reference marks (54, 58) and provide a value that represents the slope of said half parts (11, 13).

Abstract: The present disclosure relates to an apparatus for determining the orientation of ophthalmic lenses (20, 22). The apparatus includes a recording device and a reference-frame unit that can be fitted onto a frame (14) while a patient is wearing it. Said frame has two half parts (11, 13) and a central bridge (15). The reference-frame unit includes a first element forming an arch (24) that has a central portion (26) indicated by a first reference mark (54), and a second element (56) indicated by a second reference mark (58), mounted on said frame. According to the disclosure, the apparatus includes two cameras (60,62) separated vertically from each other and pointing at the eyes from two angles of view (64, 66); and the two cameras (60, 62) enable two images of said reference-frame unit (24, 56) to be recorded simultaneously in order to evaluate the relative positions of the two reference marks (54, 58) and provide a value that represents the slope of said half parts (11, 13).

Abstract: A method for the on-line selection of virtual eyeglass frames, of the type in which the virtual frame is an image designed to be superimposed on a first image of a face, is provided wherein the images being recorded at the same scale as each other in order to be displayed simultaneously in such a way as to produce a representation of the face wearing the virtual frame. The method includes the steps of a second image of the face wearing a reference frame is recorded, the second image displayed at the scale is processed to determine a datum giving the vertical position of the reference frame on the face, and the image of the virtual frame is superimposed on the first image of the face using the datum, so that the relative vertical positions of the virtual frame and the face on the one hand, and of the reference frame and the face on the other, correspond exactly.

Abstract: The invention relates to a method for measuring the curve of a spectacle frame (4) comprising the following operations: determining the position of a first reference mark (18) defining the mid plane of the spectacle frame (4); determining the position of a second reference mark (20) defining the orientation of a spectacle lens holder relative to said mid plane; and measuring the angle between said first and second reference marks. The invention also relates to a device for carrying out the method.

Abstract: A device for measuring the angle ? formed between a first position, corresponding to far sight, of a patient wearing a pair of spectacles, and a second position, corresponding to near sight, includes: a recording unit (22) for recording the orientation of the pair of spectacles in each of the two positions, and a processing member (30) for determining the angle ? as a function of the orientations, the device being characterized in that it includes a visual reference element (26) for defining the attitude of the patient in far sight.