METHOD FOR DETERMINING A GEOMETRIC DEFINITION OF A CUSTOM OPTICAL EQUIPMENT

专利摘要:
The invention relates to a method for determining a geometric definition of a personalized optical equipment adapted to its wearer, comprising at least one geometric definition of a personalized frame of this personalized equipment, according to which the geometric definition of said personalized frame is determined according to at least one geometrical parameter of personalization (Pperso) of the frame and of a reference mount (10) chosen by the wearer, the value of said at least one geometrical parameter of personalization (Pperso) of the frame being determined from the acquisition of data relating to at least one morphological quantity of the head (TS) of the wearer, so that the personalized frame is adjusted in accordance with at least one adjustment criterion for personalizing the geometry of the frame with respect to the morphology of the wearer's head (TS).
公开号:FR3016052A1
申请号:FR1450019
申请日:2014-01-02
公开日:2015-07-03
发明作者:Carlos Rego；Bruno Amir；Guillaume Broutin；Maxime Boiffier；Thierry Bonnin；Melanie Tessiere；Jerome Moine
申请人:Essilor International Compagnie Generale dOptique SA；
IPC主号:

专利说明:

[0001] TECHNICAL FIELD TO WHICH THE INVENTION RELATES The present invention relates generally to the field of personalization of eyeglasses. It relates more particularly to a method for determining a geometric definition of a personalized optical equipment adapted to its wearer. BACKGROUND ART Optical equipment includes a spectacle frame and a pair of ophthalmic lenses mounted therein. Current optical devices are not defined in a personalized way. The wearer and his optician choose from a limited set of mount specimen, the one that best suits, depending on the aesthetic wishes of the wearer, practical considerations (sports activities ...) and economic (price), the optical function provided by the future glasses (need of visual correction and / or protection of the type of filtering of the light and the shape of the wearer's face (height of the circles, length of branch, curve, shape of the circles ...) The ophthalmic lenses are also determined according to several criteria, including the visual correction, the need for light filtering type protection, the activities performed by the wearer with the optical equipment, etc. .... It is then difficult for the wearer to find equipment optical system that meets all of its needs.
[0002] In an attempt to partially overcome this problem, the optician makes an adjustment of the frame directly on the wearer's face, manually, according to the indications of comfort provided by the wearer and according to empirical know-how. This adjustment is long and tedious for the optician and the wearer, and its quality, important for visual correction, depends on the operator and the care given to this operation. It is often performed upon receipt of the finished pair of spectacles, i.e. in which the ophthalmic lenses have been mounted. At this stage, there is also a risk that one realizes that the optical equipment obtained is not suitably adapted to the future carrier. This process therefore does not always allow the production of pairs of glasses whose optical and mechanical characteristics are precisely adapted to the wearer. There is therefore a need to provide a personalized optical equipment adapted to its wearer at least the custom mount meets a geometric definition designed from geomorphic data, that is to say data depending both of the geometry of the frame and the morphology of the wearer. There is, in addition, a need to ensure that custom optical equipment is feasible and a need to evaluate the quality and accuracy of the adaptation of the equipment to its wearer, preferably in advance. In addition, the determination of a personalized equipment is complex, since it depends on numerous parameters, in particular on the choice of the frame made by the wearer (type of frame -controlled, pierced, grooved-, frame geometry, material of mount, mechanical properties of the frame ...), parameters related to the wearer: refraction, morphology of the face .... It is not easy to determine all these parameters and it also proves It is difficult to obtain results which can be usefully exploited without the implementation of this determination becoming too tedious and consuming resources, especially as regards the measurement protocol and the data processing. OBJECT OF THE INVENTION In order to overcome the above-mentioned drawbacks of the state of the art, the present invention proposes a method of determining a geometrical definition of a personalized optical equipment making it possible, in particular, to receive the desired ophthalmic lenses and to provide optimum comfort for the wearer while meeting the aesthetic criteria desired by the wearer. More particularly, there is provided according to the invention a method for determining a geometric definition of a personalized optical equipment adapted to its wearer, comprising at least one geometric definition of a personalized frame of this personalized equipment, according to which the definition the geometry of said custom mount is determined according to at least one geometrical parameter of customization of the frame and a reference frame chosen by the wearer, the value of said at least one geometrical parameter of customization of the frame being determined from acquiring data relating to at least one morphological quantity of the wearer's head, such that the personalized frame is fitted to the wearer's head in accordance with at least one adjustment criterion for customizing the frame geometry relative to the morphological size of the wearer's head. Thanks to the method according to the invention, it is possible to take into account the choices of the wearer in terms of the type of frame chosen (shape, material, frame rimmed or pierced or slotted, etc ....) and the parameters related to the wearer's head (face size, facial morphology ...). By morphological size is meant in particular all the dimensions, distances or angles associated with the wearer's head, as well as the shapes of particular elements of the wearer's head and their relative arrangement with respect to each other. This method thus improves the comfort of wearing: the areas of the wearer's head that support the frame are mainly the top of the nose and the area from the temples to the top of the ears. The method makes it possible to define the elements of the frame such as the bridge, the nasal support elements, or the branches according to the geometrical data coming from the wearer's face. In particular branches, their spacing and length can be dimensioned to provide an optimal port (without too much or too little maintain the optical equipment).
[0003] This process thus makes it possible to improve the aesthetics: the shape of the circles (or lenses in the case of pierced or slotted equipment), their size, or their positioning are defined by the method according to the geometrical data obtained from the wearer's face. For example, in the case of a custom plastic mount the bridge and the nose support elements will have a shape specifically sized for the wearer. The method according to the invention also makes it possible to adapt the shape of the personalized frame to the nose, to the eyebrows, to the roundness of the face: it is possible, for example, to modify the shape of the frame close to the nasal region to allow the passing of the nose, and / or accentuating or softening certain curves of the personalized frame to follow the roundness of the eyebrow or the oval of the face, or on the contrary to move away from it in such a way as to emphasize or reinforce the features of the face of the carrier.
[0004] The method allows an important personalization because it leaves the free choice to the wearer or the optician to adjust a set of geometrical parameters of the frame according to aesthetic criteria desired by the wearer, these criteria being able in particular to result from a fashion or a physical activity of the wearer.
[0005] The method finally makes it possible to generate models of personalized optical equipment possibly allowing remote fitting via the internet or virtual opticians. Other non-limiting and advantageous features of the method according to the invention are as follows: the geometrical definition of said personalized optical equipment further comprises a geometric definition of personalized ophthalmic lenses intended to be mounted in said personalized frame, the geometrical definition of the ophthalmic lenses being determined jointly with the geometric definition of the personalized frame; - The frame being intended to accommodate visual correction lenses, the value of said geometric customization parameter of the personalized frame is determined according to the visual correction made by the lenses; said customization adjustment criterion comprises a constraint on at least one of the following geometrical-morphological parameters, related to the relative position of said custom mount relative to the wearer's head: a relative position of the branches of the frame personalized with respect to the wearer's ears, - a spacing of the branches of the personalized frame, defined according to a determined distance between the ears, - an evaluation of the contact surface between the nose support elements of the personalized frame and the nose (N) of the wearer, - a relative position of the circles of the personalized frame and eyes (OD, OG) of the wearer, - a relative position of the lenses mounted on the personalized frame and eyes (OD, OG) of the wearer a distance between at least one singular point of the circles of the personalized mount and at least one singular point of the wearer's head, a distance between at least one sing a plurality of lenses mounted on the custom mount and at least one singular point of the wearer's head, in particular, according to a specific embodiment, a distance between at least one singular point of the contour of the lenses mounted on the personalized frame and at least one a singular point of the wearer's head. a geometry of the contour defined according to an eyebrow geometry, the brow bone or the wearer's cheekbone, an angle between a straight line connecting the projecting points of the cheekbone and the brow bone and an average plane the circle of the custom mount disposed opposite, measured in a plane perpendicular to the mean plane of the rim of the mount, - an angle between a straight line connecting a sphenoid point and a point of the nose wing of the wearer and the average plane of the corresponding circle of the mount, measured in a plane parallel to a Frankfurt plane of the wearer's head; when said personalization adjustment criterion comprises a constraint on a distance between a singular point of the wearer's head and at least one singular point of the circles of the personalized frame or at least one singular point of the lenses mounted on the personalized frame or at least one singular point of the contour of the lenses mounted on the custom mount, the personalization adjustment criterion is determined such that this distance is greater than a minimum value of distance, or so as to minimize a difference between this distance and a target value of distance; the mount being intended to accommodate lenses for visual correction, the value of said geometrical parameter for customizing the personalized frame is determined as a function of the visual correction made by the lenses; the customization adjustment criterion is determined as a function of the visual correction made by the lenses; the geometrical customization parameter comprises at least one of the following geometrical frame parameters: the curve angle, the pantoscopic angle, the length of the branches, the width of the bridge, the shape or one of the dimensions of the frame, the positioning or the orientation of the bearing elements of the frame on the nose of the wearer. it comprises the following steps: al) determining a model of a reference frame, with, in the same reference frame, at least one model of the nose support elements of the frame, a model of the circles of the frame or contour ophthalmic lenses mounted on the frame and a model of part of the legs (14, 15) of the reference frame, Fait) determining at least a partial modeling of the head (TS) of the wearer, with, in the same frame of reference , at least one model (MN) of a part of the nose (N), a model (MORD, MORG) of a part of the ears (ORD, ORG) and at least one model of part of the median area of the face including the eyebrows (SCD, SCG), the cheeks (J), and the temples, cl) perform a simulation of the positioning of the reference frame on the head (TS) of the wearer, by superimposing on the modeling of the head (TS) of the carrier, the corresponding zones of the modeling of said reference frame, dl) in the configuration of step c1), determining the value of at least one geometric-morphological reference parameter related to the relative position of said reference frame relative to the wearer's head; el) determining, as a function of the value of the geometric-morphological reference parameter determined in step di), the value of the geometrical parameter of personalization of the personalized equipment. it comprises the following steps: a2) identifying a reference frame, b2) determining the value of at least one reference geometrical parameter on said reference frame, c2) placing in the position of use of said reference frame on the the wearer's head, d2) in the configuration of step c2), determining the value of at least one geometrical-morphological parameter related to the relative position of said reference frame with respect to the wearer's head, e2) determining the value of the geometrical parameter of personalization, from the values of the geometrical-morphological parameter measured in step d2) and the reference geometrical parameter of said reference frame; the measurement of the geometrical-morphological parameter of step d2) comprises the capture of at least one image of the head of the wearer equipped with the reference frame; the geometric definition of said personalized mount includes access to a frame register containing, associated with each frame, an identifier of the shape of the frame and at least one geometrical parameter of this frame and the search in this register of at minus a mount whose shape corresponds to the frame shape chosen by the wearer and whose geometry satisfies, with a predefined tolerance, the geometric parameter of customization of said personalized frame; to determine the geometrical definition of said personalized frame: a geometrical definition of an initial frame is deformed so that the geometrical definition of the personalized frame, resulting from this deformation, is in conformity with said geometrical parameter of customization, with an adjustment on the the wearer's head (TS) according to said personalization adjustment criterion; the initial frame is of different shape from that of the reference frame; the initial frame is identical with the reference frame; the necessary deformation of the initial frame is determined so that the geometrical definition of the personalized mount is in accordance with said geometrical parameter of personalization, and information is returned on the adequacy between the capacity to deform of the initial mount and the necessary deformation of this one; the deformation of the initial frame is carried out without any conservation constraint of at least one of the following dimensions of the initial frame: the perimeter of the circles, the length of the branches, the length of the nasal bridge of the initial frame, the curvature outline of initial mount; after determining the geometric definition of said personalized equipment, this geometric definition is transmitted to the wearer for validation by him; after having determined the geometric definition of said personalized equipment, a geometric-morphological parameter is deduced therefrom related to the relative position of said personalized equipment with respect to the wearer's head, and information is returned on the conformity of said personalized equipment obtained by this geometric definition to the customization adjustment criterion; - It sends back information on the feasibility of manufacturing the custom frame or said personalized equipment; after determining the geometric definition of the personalized ophthalmic lenses, information is returned on the feasibility of manufacturing these personalized ophthalmic lenses; the determination of the geometric definition of the personalized equipment comprises the assembly of geometrical definitions of parts of the frame such as the branches, the nasal support elements and the circles, each of these parts being respectively selected by a search in a register containing different shapes and / or dimensions of the embodiment of the part concerned, of at least one shape and / or dimension of this part corresponding to the frame shape chosen by the wearer and whose geometry satisfies, with a margin of tolerance predefined, to the geometrical parameter of personalization; from said geometrical definition, the personalized equipment is made at least partially by additive rapid prototyping or by machining; the acquisition of data relating to at least one morphological quantity of the carrier head is carried out on a first site and the determination of the value of said at least one geometrical parameter of customization of the frame is carried out on a second site distinct from the first one; ; the first site is located in any location accessible either physically by the wearer or on a server, while the second site is located at an optician, in an optical equipment assembly laboratory, or at a supplier of equipment online optics; - The determination of the definition of the personalized frame and / or the manufacture of the custom mount takes place on a third site, distinct from the first site, which is either distinct or confused with the second site; the transmission of the data relating to at least said morphological quantity of the wearer's head and an identifier of the reference frame, from the first site to the second site, the transmission of the value of said at least one geometrical parameter. customizing the personalized frame of the second site to the third site and the referral, from the third site, of the definition of the personalized frame and / or custom mount from the third site to the first. DETAILED DESCRIPTION OF AN EXEMPLARY EMBODIMENT The following description with reference to the accompanying drawings, given as non-limiting examples, will make it clear what the invention consists of and how it can be achieved. In the accompanying drawings: FIG. 1 is a schematic perspective view of a reference eyeglass frame (solid lines) and partial modeling of the wearer's head (dashed lines), FIG. schematic from above of the reference eyeglass frame and the partial modeling of the head of FIG. 1; FIG. 3 is a schematic view of the profile of the wearer's head with the reference eyeglass frame, FIG. 4 is a diagrammatic front view of the wearer's head and the reference eyeglass frame of FIG. 3; FIGS. 5 and 6 illustrate a correct fit of a branch of the reference eyeglass frame on the ear of the carrier, - Figure 7 is a schematic view of the different steps of an embodiment of the method according to the invention. The following definitions of terms are applicable for the remainder of the description: "Optical equipment" means equipment comprising a spectacle frame and at least one ophthalmic lens intended to be mounted or mounted in this frame. - By "geometric definition" of an element, we mean a real or virtual geometric definition of this element. A real geometrical definition of the element can be the element itself or a real modeling of this element, realized for example in the form of a prototype comprising only certain parts of this element. A virtual geometric definition of the element consists of a numerical modeling of this element comprising for example a data file grouping the values of different geometric characteristics of this element. The virtual geometric definition of the element may also include any data file grouping the coordinates in the same frame of different singular points of the element. This element can be a personalized equipment, a personalized frame and / or a generic frame and / or a personalized or generic ophthalmic lens. When the element is a frame, the various geometric characteristics of this element are, for example, the curve angle, the pantoscopic angle, the length of the branches, the width of the bridge, the height of the nose support elements, the shape of the frame or one of the dimensions of the frame, the positioning or the orientation of the bearing elements of the frame on a nose of a wearer. - "Mount geometry" means the dimensions of this mount, for example the diameter of the circles and / or their shape, the length of the branches or the length of the bridge, as well as the characteristic angles of this reference mount, in particular the curvature angle GD, GG and the AMV pantoscopic angle (FIGS. 2 and 3). - "Frame shape" means a frame category having a common geometric characteristic at least partially determining the overall shape, therefore the frame structure. The shape of the frame can then be associated with an identifier of this frame. The mounts shapes can for example be classified according to the following categories of frames: - categories related to the shape of each circle of the frame, for example, circular circles, oval, rectangular, square or other, - categories related to the overall shape circles of the frame, for example linked to the base of the frame, which can be weak, strong or medium depending on predefined threshold values, - categories related to the shape of the branches of the frame: straight or curved at their free end .
[0006] The invention relates to a method for determining a geometric definition of a personalized optical equipment adapted to its wearer, comprising at least one geometric definition of a personalized frame of this personalized equipment, according to which: a reference frame is identified; chosen by the wearer, the value of at least one geometrical parameter of personalization of the frame is determined from the acquisition of data relating to at least one morphological quantity of the wearer's head, so that the personalized frame is adjusted in accordance with at least one adjustment criterion for personalization of the geometry of the frame with respect to the morphological quantity of the wearer's head, - the geometrical definition of said personalized frame is determined according to said at least one geometrical parameter of customization of the frame and the reference frame chosen by the wearer.
[0007] In a first variant embodiment, the method according to the invention may further comprise a geometric definition of at least one personalized ophthalmic lens intended to be mounted in said personalized frame. The geometric definition of the personalized ophthalmic lenses and the personalized frame is then advantageously determined jointly, globally. By conjointly, it is meant that the geometric definition of the personalized ophthalmic lenses is determined either simultaneously with the determination of the geometrical definition of the frame or according to the geometrical definition of the personalized frame determined. The geometric definition of the personalized ophthalmic lenses thus takes into account the geometric constraints and / or comfort of the wearer and / or the aesthetic criteria desired by the wearer, as described below.
[0008] The optical design of these personalized ophthalmic lenses is performed according to optical parameters resulting from the needs in terms of visual correction of the wearer, morphological parameters according to the morphology of the wearer's head and, depending on the embodiment variant, if appropriate, geometric parameters depending on the geometry of the custom mount. In addition, the method for defining the wearing conditions of the personalized equipment, that is to say the positioning of this equipment after adjustment on the wearer's head, these wearing conditions can also be used for the optical design personalized ophthalmic lenses. In a second variant embodiment, the determination of the geometrical definition of the personalized frame may take into account parameters related to personalized ophthalmic lenses intended to be mounted on this frame, as explained below.
[0009] Determination of the reference frame 10 (step 100 of Figure 7 in particular). In the examples described here, a reference frame 10 is used. This reference frame 10 is standard and not personalized. A first step of the method according to the invention therefore consists in identifying a reference frame 10. This is a step of selecting the reference frame 10 by the wearer. This reference frame 10 may be chosen in particular by the wearer from a set of reference frames 10 which are proposed to him. It can choose according to aesthetic criteria, practical (use of the frame, robustness, etc ....), economic (price ...), and / or comfort. In an alternative embodiment, it may also take into account criteria related to the visual correction to be provided by the ophthalmic lenses to be mounted in the custom mount. This visual correction may for example require that the circles of the frame are sufficiently large, for example for progressive lenses, or that the curve of the frame is not too strong, for example for corrective lenses of myopia. In Figures 1 to 4, there is shown an example of reference frame 10 of glasses chosen by the wearer. In the example shown, the reference frame 10 is of the type circled, that is to say that the reference frame 10 has circles 11, 12 in which the ophthalmic lenses are intended to be mounted. These two circles 11, 12 are rigidly connected by a nasal bridge 13. Each circle 11, 12 is also connected to a branch 14, 15, usually articulated on the corresponding circle. It will be considered in the following that the branches are fixed in their open position relative to each other. The nasal bridge 13 has nasal support elements. These support elements include two bearing surfaces 16 on the wings of the nose of the wearer (Figure 1). These bearing surfaces 16 may be fixed, for example in the case of a plastic reference frame in which the nose support elements and therefore these surfaces are integrated in the circles of the frame, or be adjustable, for example in the case of a metal reference frame in which the nasal support elements are in the form of two plates 16A each connected to the nasal bridge by an arm 17 (Figures 1 and 2). It is this latter case which is represented in the figures. The plates 16A can also be connected to the circles 11, 12 of the frame 10.
[0010] The plates 16A carrying the bearing surfaces 16 of the reference mount 10 on the wearer's nose mainly have two adjustable parameters: on the one hand the distance from the wafer 16A to the circle 11, 12 of the frame 10 and other the inclination of the wafer 16A according to a front angle and a hunting angle defined later.
[0011] In the case of the plastic mounts described above, the position and inclination of the support surfaces of the frame on the wearer's nose are predetermined and fixed. Each branch 14, 15 of the reference mount 10 comprises at least a first portion whose end is connected to the corresponding circle 11, 12. This first part may be straight (Figure 5) or have a slight curvature allowing it to marry the contour of the TS head of the wearer. In the example shown in the figures, each branch 14, 15 of the reference mount 10 further comprises a second portion in the form of a spatula 14A, 15A extending the first portion of the branch 14, 15 at the end. opposite to the circles 11, 12 of the mount 10. This spatula 14A, 15A forms the curved end of the branch 14, 15 corresponding. It is intended to be placed behind the corresponding ORD ear ORG of the wearer (see Figure 6). Alternatively, the branches of the reference frame 10 do not have spatulas. In this case, it is the free end of the first part of the branch which rests on the ear of the wearer. This variant is shown in dashed lines in FIG. 6. In another variant, the reference frame 10 may be of the pierced type, that is to say that the ophthalmic lenses are pierced and each held by one end of the nasal bridge and one end of the branch associated with the lens, which cooperate with drilling holes. This type of mount is similar to that described above, except that it does not have circles. The nasal bridge and branches are similar. In practice, for such a pierced frame, the contour of the ophthalmic lenses then plays the role of the circles of a rim type frame. In general, the reference frame 10 has a plane of symmetry PS passing through the middle of the nasal bridge 13 and equidistant from the branches 14, 15 of the frame 10.
[0012] In addition, the first part of the two branches 14, 15 extends in the same mean plane PB. As represented in FIGS. 1 and 2, a first frame associated with the reference frame 10, that is to say in which the reference frame 10 has a position and a fixed orientation, having an orthonormal frame (01 , X1, Y1, Z1). The center 01 of the reference mark of this first reference frame is, for example, the middle of the nasal bridge 13. The axis 01Z1 is parallel to the intersection of the plane of symmetry PS of the frame 10 and the average plane PB of the branches 14, 15 The axis 01Y1 extends in the plane of symmetry PS of the reference frame 10, in the direction opposite to the circles of the frame. The axis 01X1 extends parallel to the average plane of the branches PB. The plane 01Y1Z1 then corresponds to the plane of symmetry PS of the frame of reference 10. The plane 01X1Z1 is parallel to the average plane of the branches PB. The plane 01X1Y1 is called vertical plane PVM mount. The flush angle of each wafer 16A corresponds to the inclination 30 of the contact surface of the wafer 16A relative to the plane 01Y1Z1 of the frame 10, measured in projection in the plane 01X1Z1. The front angle of each wafer 16A corresponding to the inclination of the contact surface of the wafer 16A relative to the plane 01Y1Z1, measured in projection in the plane 01X1Y1.
[0013] In general, the reference frame 10 can be a real or virtual mount. According to a first embodiment, the reference frame 10 is virtual, the wearer can for example choose from catalog or online for example. This virtual reference frame 10 is associated with a three-dimensional model or with a set of measurements of lengths and characteristic angles of this reference frame 10 or with the coordinates in the same frame of a set of particular points of the frame. reference mount 10.
[0014] The virtual reference frame can also be determined by performing at least partial modeling of a real reference frame. According to a second embodiment, the reference frame 10 is real. It is for example chosen in store by the wearer. The reference frame 10 may comprise non-corrective presentation lenses or no lenses. Determination of the geometrical parameter of customization of the mount The reference mount 10 being identified, the next step is the determination of the geometrical parameter of customization of this mount.
[0015] The geometric customization parameter can be determined in different ways. Two embodiments are envisaged later, depending on whether the reference frame 10 is virtual or real. According to a first embodiment in which the reference frame 10 is virtual, the determination of a value of said customization geometrical parameter is carried out according to a modeling of the wearer's head and a virtual adjustment of this modeling of the reference frame 10 on the modeling of the wearer's head. More particularly, the determination of the geometrical parameter of personalization then comprises, for example, the following steps: a1) determining the virtual reference frame, comprising for example the modeling of a real reference frame, with, in said first reference frame (01 , Xi, Yi, Z1), at least one model of the nasal support elements of the reference frame 10 and a model of part of the branches 14, 15 of the reference frame 10, bl) to determine at least one model partial of the wearer's head TS, with, in the same reference frame, at least one model of a part of the nose N, a model of a part of the ears ORD and ORG, cl) perform a simulation of the positioning of the frame of reference 10 on the wearer's head TS, superimposing on the modeling of the wearer's head TS, the corresponding zones of the modeling of said reference frame 10, dl) in the configuration of step c i), determining the value of at least one geometric-morphological reference parameter PGM, -ef related to the relative position of said reference frame 10 relative to the head TS of the wearer; el) determine, from this superposition, the value of the geometrical parameter of personalization of the custom mount. Step al) It is in this step to recover the data of the reference frame 10 selected in the previous step. This virtual reference frame can be defined for example by a set of lengths and angles characteristic of the frame. It may also comprise a model of the circles of the frame or contour of the ophthalmic lenses mounted on the frame 10.
[0016] These lengths and characteristic angles comprise, for example, for the model of part of the branches: the length of the first part of the branches 14, 15, the length of the spatula 14A, 15A, the distance between the branches 14, 15, 1 angle between the spatula 14A, 15A and the first part of the corresponding branch 14, 15 in the plane 01Y1Z1 and in the plane 01X1Z1.
[0017] For example, they comprise, for the model of the nasal support elements: the distance between the bearing surfaces 16 of the bridge 13 on the nose, the angle formed between bearing surfaces 16 and the distance of these surfaces from support for the circles of the frame 10. They comprise for example, for the model of the circles 11, 12: the diameter of each circle 11, 12 in the plane 01, X1, Z1, the measurement of the curve GD, GG, corresponding to the angle formed between each circle 11, 12 and the plane 01X1Y1 or vertical plane PVM mount (Figure 2), and the position of the highest and lowest points of the circles 11, 12 in the plane 01Y1Z1. More specifically, for the model of the circles 11,12 the geometrical parameter of the shape can be retranscribed in a collection of points Pi of coordinates (Xi, Yi, Zi) representative of the trajectory of the groove of the corresponding circle 11,12, or the outline of the lens itself when it is a pierced or grooved mount. This data is, for example, established via a commercial form reader device, described for example in the document US5121548. Regarding the curve angle, some commercial devices are able to measure this angle when acquiring the shape of the frame. Another method of determining this angle is a technique of direct measurement of the reference frame 10 on a graduated pattern. It consists of positioning the reference frame 10 above a standard pattern modeling different values of curve angles. The value is obtained by direct reading when the reference frame 10 is well positioned. From these characteristics of lengths and angles, it is possible to reconstruct a model of the reference frame 10. This reconstruction can take into account other parameters, such as the material of the frame or the thickness of the branches. and circles. The modeling of the reference frame 10 can also be constituted by the data of the position in the first frame (01, X1, Y1, Z1) of a certain number of particular points of the reference frame 10. This modeling or The virtual reference frame may finally be the result of a three-dimensional image acquisition of the actual reference frame. This acquisition can be made for example using a stereoscopic image acquisition device or using a three-dimensional scanner. Whatever the method of obtaining the virtual reference frame, it is stored in the aforementioned computer and electronic means. It is thus possible to have, in this memory, a database comprising the modelizations of a set of available reference frames 10, which are determined in advance. These steps of determining the virtual reference frame are implemented by computer and electronic means programmed for this purpose. Step b1) Modeling of the wearer's head TS is determined either in real time so as to perform a virtual fitting of the reference frame 10 on the wearer's head TS, or in an optional preliminary step. The real-time modeling of the wearer's TS head is preferably displayed in real time.
[0018] Whether the determination of the modeling of the TS head of the wearer is made in real time or in a preliminary step, it can be done either by the choice, in a database, of a generic modeling, or by determination of a Specific modeling of the TS head of the wearer. In the case of the determination of a generic modeling of the wearer's TS head, the modeling of the wearer's TS head is selected from a predetermined modeling group according to selection criteria such as sex, age, ethnic category, or a simplified measure such as the size of the wearer's head circumference. It may be for example a generic model adapted to a carrier of Caucasian or Asian type, to a child according to his age, etc. In the case of the determination of a specific model of the head of the carrier, the step comprises the following substep: - determining an at least partial numerical modeling of the wearer's head TS, with, in a first common frame of reference, at least one MN model 20 of a part of the nose N, a model MORD, MORG of a part of ears ORD, ORG (Figure 1). In an alternative embodiment, the numerical modeling further comprises at least one model of a part of the mid-zone of the face comprising the eyebrows SCD, SCG, the cheeks J, and the temples, the latter portion may be assimilated to the area shown in Figure 4 and between a Frankfurt plane PF defined below and the SCD eyebrows SCG of the wearer. As shown in FIG. 3, a second reference frame associated with the wearer's head TS, that is to say in which the wearer's head TS has a position and a fixed orientation, having an orthonormal reference (02, X2) is defined. , Y2, Z2). The Frankfurt PF plane of the wearer's TS head is defined as the plane passing through the OR's lower orbital points and the wearer's PO porion, the porion being the highest point of the auditory canal's skull, which corresponds to the tragedy of the ear (Figure 3).
[0019] It is considered that the wearer is in an orthostatic position, position in which he achieves a minimum of effort. The axis of gaze of the wearer is the primary axis of gaze, that is to say, he looks straight ahead. The plane of Frankfurt PF is then horizontal.
[0020] A sagittal plane PSAG of the wearer's head TS is defined as being the vertical plane passing through the mediator AO of the two eyes OG, OD. The mediator AO of the eyes is the axis passing in the middle of the segment defined by the centers of rotation of the two eyes and parallel to the plane of Frankfurt PF. The AMV pantoscopic angle is defined as the angle between the mean plane of each circle PMC of the frame 10 and the vertical plane eye PVO, which is the plane perpendicular to the axis of the gaze in the orthostatic position. Preferably, the vertical eye plane PVO also corresponds to the plane perpendicular to the Frankfurt plane passing through the centers of rotation CROG, CROD of the eyes, measured in projection in the sagittal plane of the head TS of the wearer. The center 02 of the reference of this second frame of reference is, for example, the middle of the segment connecting the centers of rotation of the eyes OD, OG of the wearer. The axis 02Z2 is located in the sagittal plane PSAG of the wearer's head TS and is parallel to the plane of Frankfurt PF. It extends in a direction away from the wearer's head. The axis 02Y2 extends in the sagittal plane PSAG of the head TS of the wearer and is perpendicular to the Frankfurt plane PF. The axis 02X2 extends parallel to the plane of Frankfurt PF. Alternatively, any other frame of the frame and / or the head of the wearer may be considered. The modeling of the wearer's head comprises, for example, in said second reference frame (O2, X2, Y2, Z2), at least one MN model of a part of the nose N and a model MORD, MORG of a part of the ears. ORD, ORG of the carrier. In addition, a model MOD, MOG of a part of the eyes of the wearer is preferably determined. These models are schematically represented in FIGS. 1 and 2 by dashed lines. The MN model of a portion of the nose preferably comprises, for example, the width of the root of the nose N, the face angle AFN (FIG. 4) of the nose, the flush angle ACN of the nose (FIG. 2).
[0021] The model MORD, MORG of a portion of each ear of the wearer has the coordinates of a curved surface corresponding to the groove S located between the horn of the ear ORD, ORG and the skull of the wearer, at the back of the ear (Figures 5 and 6). It is indeed on this groove S that rests the corresponding branch 14, 15 of the spectacle frame 10. The model MOD, MOG eyes of the wearer comprises for example the position in the second frame (02, X2, Y2, Z2) of the center of rotation CROD, CROG of each eye. It can also include a diameter of the eye: the model of the eye then consists of a sphere of this diameter centered on the center of rotation of the eye (Figure 2). Also preferably, a model of a portion of the cheekbones J and / or eyebrows SCD, SCG (Figures 3 and 4) of the wearer's head is determined. This modeling is preferably the result of a three-dimensional image acquisition of the wearer's head TS. This acquisition can be done for example using a stereoscopic image acquisition device or using a three-dimensional scanner, using for example a structured light. The acquisition of three-dimensional images is preferably carried out for the head TS of the wearer of face (Figure 4), of profile (Figure 3) and the turn of the ears. It is preferably an accuracy of 2 degrees of angle and two millimeters on the distances. It can be performed by an outside operator, for example by the optician in his shop. It can also be envisaged that it is carried out remotely, for example by the wearer himself at home, and then transmitted to the operator responsible for determining the custom mount.
[0022] Modeling of the wearer's head TS can also be achieved by capturing one or more two-dimensional images of the wearer's head TS. Whatever the image capture device used, 2D or 3D, is recorded in correspondence with the captured images information indicating the scale of the captured image. This may be the image of a scale indicator disposed on the wearer's head TS, for example an element comprising a pattern of known dimensions, attached to the head TS or to a spectacle frame of the wearer or the inter-pupillary gap known to the wearer. This information may also be provided by or received by the image capture device. Finally the modeling of the wearer's head TS may also consist of a set of measurements made directly by the optician on the head TS of the wearer, for example using a ruler.
[0023] In general, the relative position of the following points of the wearer's head TS can be determined: - pupil center, - sphenoid and temporal cantata.
[0024] The following geometric parameters of the wearer's TS head can be determined: - eyebrow height, eyebrow shape, - cheekbone height, - nose shape at the cantuses, - lateral slope of the nose, - average horizontal / vertical curve of the nose face, or on a precise meridian, - overall shape of the wearer's head TS, for example according to one of the existing classifications, according to Sigaud, Hoffman, or Eber, - head port, natural inclination to the left or right. In the case where the modeling of the wearer's TS head is carried out from one or more image captures, the identification of these points and the determination of these measurements or facial features of the wearer may be automated via software image processing (facial recognition) or semi-automatic via an interface where a certain number of points must be selected by the user, in practice the optician. This specific modeling of the wearer's TS head is also stored in the computer and electronic means. Step c1) It is then a matter of superimposing by calculation the modeling of the reference frame 10 and the modeling of the TS head of the wearer. More precisely, the model of a portion of the bridge 13 of the reference frame 10 and the model MN of a portion of the nose N of the wearer are superimposed on one hand, and on the other hand, the model of part of the branches 14, 15 of the reference frame 10 and the model MORD, MORG of a part of the ears ORD, ORG of the wearer. In doing so, a reference positioning of the reference frame 10 is carried out on the TS head of the wearer. In this step, a rough adjustment of the reference frame 10 is performed on the head TS of the wearer. More particularly, it simply ensures the horizontality of the reference frame 10 on the TS head of the wearer. In this context, the following example gives a method of possible realization of the digital overlay of the two modelings with positioning of the reference frame 10 on the wearer's head. It is initially considered that the first and second reference frames (01, Xi, Y1, Z1) and (02, X2, Y2, Z2) of the reference frame 10 and the head are merged, then their relative positioning is optimized, while maintaining the axis 01X1 parallel to the axis 02X2. The horizontality of the frame on the wearer's head is thus ensured. Step d1) The positioning of step c1) is performed by calculation. From the data in memory, the computer and electronic means are then programmed to determine by calculation the values of the geomorphological reference parameters PGM, -ef searched from the superposition of the modelizations of the head TS of the wearer and the frame virtual reference number determined previously in step c1). Whatever the embodiment envisaged for carrying out this step d1), in practice the geomorphologic reference parameter PGM, the desired one, depends both on the geometry of the reference frame 10 and on the morphology of the head. TS of the wearer. By morphology of the wearer's head TS, the dimensions of the wearer's head, the position of the eyes, cheekbones, eyebrows or nose on the wearer's head, the shape of the eyebrows and the nose are particularly understood. The dimensions of the wearer's head TS include measures of the width L 1, L 2, L 3 of the head TS measured as the distance between two points P 1, P 2, P 3 situated on either side of the head, at a distance of 'intersection with a PP plane parallel to the Frankfurt PF plane and passing through the internal canthus CID, CIG or external CED, CEG eyes (see Figure 4).
[0025] In particular, the sphenoidal points Pi, temporal P2, and supereroauricular P3 of the wearer's head are defined (see FIGS. 4 and 5). The sphenoidal points P1 are located on either side of the wearer's head TS, at the level of the sphenoid bone of the skull. We consider two points located on a horizontal line, that is to say parallel to the plane of Frankfurt PF and parallel to the vertical plane eye PVO. The pair of sphenoid points considered will correspond, for the implementation of the method, to the pair of points separated by a minimum distance. The temporal points are located on both sides of the wearer's head, at the temporal bone of the skull. We consider two points located on a horizontal line, that is to say parallel to the plane of Frankfurt and parallel to the vertical plane eye PVO. The pair of temporal points considered will correspond, for the implementation of the method, to the pair of points separated by a minimum distance. These sphenoid and temporal points are, for example, defined in the document entitled "The Optician Lunetier" by Caroline Kovarki edited by Lavoisier Edition TEC & DOC, in 2009, ISBN 978-2-7430-1088-1, 2nd edition in Chapter 33 - taking measurements on pages 1473 and following. The supraauricular points are located on either side of the wearer's head, in correspondence with the highest point of the groove of the ear. The upper atrial difference corresponding to the distance between these two supereroauricular points is the difference between the grooves S of the right ORD and left ORG ears. More precisely, said at least one geomorphological reference parameter PGM, -ef determined in step d1) comprises, for example, one of the following geometrical quantities: a relative position of the branches of the reference mount relative to the ears ORD ORG of the wearer, - a spacing of the branches 14, 15 of the reference frame 10 associated with a determined distance between the ears ORD, ORG, - an evaluation of the contact surface between the nasal support elements 16A of the reference frame 10 and the nose N of the wearer, - a relative position of the circles 11, 12 of the reference frame 10 and the eyes OD, OG of the wearer, - a relative position of the contour of the ophthalmic lenses mounted on the reference frame 1 0 and eye OD, OG of the wearer, - a distance between at least one singular point of the reference frame 10 and a singular point of the wearer's head, - a distance between at least one singular point r of the contour of the ophthalmic lenses mounted on the reference frame 10 and a point of the head TS of the wearer, - an angle between a line connecting the raised points of the cheekbone JS and the brow bone SCS and the average plane of the circle PMC of the reference frame disposed opposite, measured in a plane perpendicular to said average plane of the circle of the reference frame, - an angle between a line connecting the sphenoid point P1 and a point PN of the nose wing of the wearer and the average plane of the corresponding PMC circle of the reference frame, measured in a plane parallel to the Frankfurt plane PF of the wearer's head TS. In particular, said at least one geometric-morphological reference parameter PGM, -ef of step d1) preferably comprises a distance between at least one singular point of the reference frame and a singular point of the wearer's head, among the following distances: - distance between a point of the circles of the reference frame 10 and a point of the cheekbones of the wearer, for example the distance L4 between the lowest point 11B, 12B of the circle 11, 12 of the reference frame 10 and the most salient point JS of the corresponding cheekbone J of the wearer, measured in projection in a plane parallel to the Frankfurt plane of the wearer's head (FIG. 4), - distance between a point of the circles of the reference frame 10 and an eyebrow point SCD, SCG of the wearer, for example the distance L5 between the highest point 11H, 12H of the circle 11, 12 of the reference frame and the most salient point SCS of the eyebrow SCD, SCG or of the SC eyebrow arch corresponding carrier, measured in projection in a plane parallel to the Frankfurt plane of the wearer's head (Figure 4), - distance between a point of the eyes of the wearer and a point associated with the reference frame 10, for example the distance between one of the canthus CI, CE of the eye ORD, ORG and the average plane PMC of the circle of the corresponding reference frame, - distance L6, L7 between each sphenoid point Pi, temporal P2 and / or superauricular P3 and the branch 14, 15 corresponding to the reference mount 10 (FIG. 5), distance L8, L9, L10 between each sphenoid point Pi, temporal P2 and / or superauricular P3 and the mean plane of the circle PMC of the corresponding reference mount 10 ( FIG. 5), distance L11 between a point of the nose flange PN and the nearest point of the circle 11, 12 of the reference frame 10, the point of the wing of the nose being for example a point of the wing of the nose belonging to a plane parallel to the plane of Frankfurt and passed by the internal or external canthus of the wearer's eyes. It is also possible to take into account the distances between each sphenoid point Pi, temporal P2 and / or superauricular P3 and the vertical plane PVM mount of the reference frame 10. In particular, said at least one geometric-morphological reference parameter PGMref of the step d1) consists of a collection of distances between the points of the reference frame 10 and one or more singular points of the wearer's head TS. The points used in the construction of this collection of distances may be chosen by equidistant sampling on part of the circles of the reference frame 10 or all of them. These points are for example those from the form reader. The distances forming the collection are then appreciated between the point itself and its projection on the face along the axis 01Z1. Step el) In step el), at least one value of at least one geometrical parameter of personalization Ppers, of said personalized mount is determined from the value of the geometric-morphological reference parameter PGMref determined in step di ). More precisely, the value of said geometric personalization parameter Pperso is determined in such a way that the personalized mount is fitted to the wearer's head in accordance with at least one personalization adjustment criterion comprising a constraint on at least one related geometric-morphological parameter. the relative position of said custom mount relative to the wearer's head TS. In other words, the geometric customization parameter Pperso is determined according to the values of the geometrical-morphological reference parameter PGMref determined in step d1) for the reference frame 10 positioned on the wearer's head, so that that the geomorphic parameter related to the relative position of said custom mount relative to the wearer's head TS satisfies a personalization adjustment criterion.
[0026] In a non-limiting example, the personalization of the equipment is done via a geometric customization parameter Ppe ', which is the curvature angle of the frame. It should be noted that the determination of this particular parameter involves taking into account the prescription of the wearer and a positioning of the ophthalmic lens in front of the eye compatible with the optical correction to be made. Indeed, at the assembly stage, the geometry of the ophthalmic lens, related to the requested prescription, will have an effect on the curve angle of the custom mount. The more the lens will have a flat front face the lower the resulting curve angle will be weak, which is incompatible with effective protection because in this case the lens will have the effect of moving away from the face temporal side. In a preliminary step, therefore, the optical parameters of the lens such as the curvatures of its faces are determined. The curvature of the front face is then evaluated on an area of the lens corresponding to the shape of the reference frame.
[0027] The customization adjustment criterion used is on the geometric-morphological distance parameter between a singular point of the circles 11 and 12 of the personalized frame and a singular point of the wearer's head TS. In more detail, the geometric-morphological reference parameter PGM, ef is the curve angle GG for the left side (respectively GD for the right side). In particular, the middle zone of the face is modeled in the step (tri) and then the positioning is carried out according to ci). According to dl), a customizing adjustment criterion is then used on the geometric-morphological parameter of distance between a singular point of the left circle 11 (respectively of the right circle 12) of the personalized frame and a singular point of the wearer's head TS. . This customization adjustment criterion is here the distance De between the extreme point Pe of the temporal side shape located on the horizontal median line and the point P'e of the face. The point Pe is the point of the circle whose coordinate Xe according to 01X1 is minimum or maximum (right temporal side Xe is minimum, left temporal side Xe is maximal). The horizontal median line is the line that cuts the shape of the circles into two equal parts of height when the shape is seen from the front. P'e is determined by the projection on the face of the point Pe along a fixed axis, for example the axis 01Z1. This distance is used as the target distance. In a non-limiting example, the adjustment criterion is defined at 15 millimeters +/- 5 millimeters. The customized frame obtained has a geometry such that the point Pe is at a distance of 15 millimeters + 1-5 millimeters from the point P'e. The geometric personalization parameter Pperso of step el) is the custom curve angle GG '(respectively GD'). Indeed, when the curve of the frame is varied, the distance De is modified. This parameter is established as a function of the distance De relative to the position of the point Pe including the ophthalmic lens but also of optical defects to be limited of the deflection type. prismatic not to be exceeded. Thus, in step e1), the aim is to best satisfy the adjustment criterion on the distance De, that is to say, to reach at best a target value, while guaranteeing a good optical function, in particular limiting deviations. More generally, the customization adjustment criterion comprises a constraint on at least one of the following custom geometric-morphological parameters: a relative position of the branches of the personalized frame relative to the ORD ears, ORG of the wearer, a separation of the branches of the personalized frame, defined according to a determined difference between the ears ORD, ORG, - an optimization of the contact surface between the nose support elements of the personalized frame and the nose N of the wearer, a relative position of the circles of the personalized frame and the eyes OD, OG of the wearer, a relative position of the contour of the ophthalmic lenses mounted on the personalized frame and the eyes OD, OG of the wearer, a distance between at least one singular point of the personalized frame and a singular point of the wearer's head, - a distance between at least one singular point of the contour of the ophthalmic lenses mounted on the custom mount and a singular point of the wearer's head, - a frame contour geometry defined according to a geometry of the eyebrows, eyebrows or cheekbones of the wearer, - an angle between a straight line connecting the salient points of the cheekbone JS 5 and the eyebrow arch SCS and the average plane of the circle PMC of the personalized mount disposed opposite, measured in a plane perpendicular to said median plane of the circle of the frame, - an angle between a straight line connecting the sphenoid point P1 and a PN point of the nose wing of the wearer and the average plane of the corresponding PMC circle of the mount, measured in a plane parallel to the Frankfurt PF plane of the wearer's head. The distances and singular points considered here are for example chosen from those described for the determination of the geomorphic reference parameter PGM, -f of step d1). When said personalization adjustment criterion comprises a constraint on a distance between a singular point of the wearer's head TS and at least one singular point of the circles of the personalized frame or the contour of the ophthalmic lenses mounted on the personalized frame, the Customization adjustment criterion is determined such that this distance is greater than a minimum distance value, or so as to minimize a difference between this distance and a distance target value. This amounts to avoiding contact between the custom mount and the TS head of the wearer outside the areas of the frame provided for this purpose: nasal support elements and branches. The custom fit criterion may for example include target values for various custom geometric parameters P - pers () according to standard mount adjustment values. For example, a target value of the distance between the eyes and the ophthalmic lens, i.e., between the corneal vertices of the eyes and a point on the rear face of the lens, is equal to 12 millimeters. It is also possible to set a target value of the gap between the circles 11, 12 of the frame 10 and the eyebrows SCD, SCG and / or the cheekbones J of the wearer equal to 3 millimeters, for example. Finally, it is possible to set a target value equal to 6 degrees for the AMV pantoscopic angle or equal to 8 degrees for the value of the curve angle GG, GD of the frame 10. The target values can also be determined according to the material of the custom mount: for example, for a satisfactory fit, a target value of the gap between the branches of the custom mount can be predicted according to the upper ear gap, i.e. the gap between the grooves S of the right ORD and left ORG ears. For flexible branches, for example made of metal and thin, the target value of the gap between the branches is equal to the upper ear gap minus fifteen millimeters. For semi-rigid branches, for example made of metal and thick, the target value of the gap between the branches is equal to the upper ear gap minus ten millimeters. For rigid branches, for example made of plastic and thin, the target value of the gap between the branches is equal to the upper ear gap minus five millimeters. For very rigid branches, for example made of plastic and thick, the target value of the gap between the branches is equal to the upper ear gap minus two or three millimeters.
[0028] Target values can be replaced by target value ranges. It can also be maximum and / or minimum values. Other empirical criteria may also be taken into account, for example, requiring that the branch of the custom mount be in contact with the groove S of the ear ORG, ORD for a length of between 2 and 2.5 centimeters ( Figure 6) and that it is at a distance between 2 and 5 millimeters of the skull of the wearer. It is also possible that the shape of the spatula is adapted all along the groove of the ear. This adjustment allows a better hold of personalized equipment, especially for wearers with a fairly flat nose, with a strong correction or dynamic activity. In addition, in a previously mentioned embodiment, the custom mount being intended to accommodate visual correction lenses, the value of said geometric customization parameter of the custom mount can also be determined as a function of the visual correction performed by the lenses. ophthalmic. For this purpose, the personalization adjustment criterion is determined as a function of the visual correction performed by the ophthalmic lenses. More specifically, the curvatures of the front face and the rear face of the ophthalmic lens and its thickness can vary greatly. This can induce particular constraints that can be taken into account in the personalization adjustment criteria. For example, knowing the shape of the circles of the custom mount and the visual correction associated with the ophthalmic lenses to be mounted in the mount, it is possible to determine an optimal curve angle or an interval of optimal curvature angles of the frame personalized for the reception of these ophthalmic lenses. It is also possible to fix a minimum distance between the outer canthus of the eye of the wearer and the point of the circle of the corresponding personalized frame located at the junction with the corresponding branch. The geometrical parameter of personalization is then determined, for example the curve and / or the length of the branches according to these two personalization adjustment criteria. Moreover, in the embodiment in which the reference mount 10 is a real mount, the determination of a value of said customization geometrical parameter P pers ° is performed with the actual reference mount 10 positioned on the wearer's head TS . The determination of the personalization geometric parameter P perso then comprises for example the following steps (FIG. 7): a2) determining (block 200 of FIG. 7) the real reference frame comprising, for example, the determination of the value of at minus one reference geometrical parameter on said reference mount 10, b2) placing (block 300 of FIG. 7) in the position of use of said reference mount on the wearer's head, c2) in the position of use of the step b2), determining (block 400 of FIG. 7) the value of at least one geometric-morphological reference parameter PGMref related to the relative position of said reference frame 10 relative to the wearer's head TS, d2) to from this value of the geometric-morphological reference parameter PGMref determined in step c2) and the reference geometrical parameter determined in step a2), determine (block 500 of FIG. ns a value of at least one geometrical parameter of personalization P - perso of said custom mount.
[0029] Step a2) Determine, in step a2), the value of at least one reference geometrical parameter of this reference frame. This reference geometric parameter is in particular intended to allow the scaling of the images captured in step c2).
[0030] In practice, it is preferably a characteristic length of the reference mount 10, or a characteristic angle of the reference mount 10. It may be in particular the overall diameter of a circle of the reference frame. This geometric reference parameter has the advantage of being able to be determined easily on an image captured from the front as well as from the profile.
[0031] It can be any other length, for example the length of the first part of the branches 14, 15, the length of the spatula 14A, 15A, the distance between the branches 14, 15, the angle between the spatula 14A, 15A and the first part of the corresponding branch 14, 15 in the plane 01Y1Z1 and in the plane 01X1Z1, the width of the bridge, the shape of the circles described by a set of points Pi of coordinates (Xi, Yi, Zi) in the reference frame (01X1Y1Z1), in the latter case the knowledge of the points Pi of coordinates (Xi, Yi, Zi) allows by calculation to deduce the value of other parameters already mentioned, such as, for example, the bridge length or the angle of curved. The value of this geometric reference parameter is determined, for example, by a measurement made directly on the actual reference frame. This measurement is for example performed by the optician. It can also be predetermined for the reference mount 10 and stored in the computer and electronic means, in correspondence with an identifier of the reference frame. Step a2) then consists in recovering this datum. Finally, the determination of this reference geometrical parameter of the reference frame 10 can be performed from a two or three dimensional image capture of the reference frame 10. Step b2) In step b2), said reference frame is placed in the position of use on the wearer's head. The reference mount 10 is a real mount, it is actually placed in step b2) on the actual head of the wearer.
[0032] It is preferably the optician who performs this step. The step then corresponds to a fitting step of the reference frame. The optician makes sure that the positioning is relatively good. This adjustment is made empirically by the optician. Step c2) Once the mount placed on the wearer's head, the value of the reference geometric-morphological parameter PGMref is determined. The positioning of the reference frame 10 on the TS head of the carrier being here real, the following variants are envisaged. According to a first variant of this step c2), a measurement is made from at least one captured image of the wearer equipped with the reference frame 10. An image capture device such as a camera or digital camera. At least one image capture of the TS head 20 of the wearer equipped with the reference frame 10 is then performed in step c2). This image capture is preferably performed by the optician. It can also be performed by the wearer, at home, using a webcam for example. Preferably, the optician captures at least two images of the wearer's head viewed from two different angles. By this is meant that the orientation of the wearer's head TS with respect to the image capture plane is different during the two image captures. For example, a first image of the head TS of the wearer and a second image of the head TS of the profile wearer are captured. Then, from a processing of the captured image (s), the reference geometrical morphological parameter (s) PGMref is determined. According to a second variant of step c2), the geometrical-morphological reference parameters PGMref sought on the head TS of the wearer are manually measured. In this case, the optician uses traditional measuring tools, for example an optician's rule, a rhinometer for specific measurements of the nose, a cephalometer for specific measurements of temples or head gaps, a protractor for any angle measurement.
[0033] Whatever the variant envisaged for carrying out this step c2), in practice, as previously, the geometrical-morphological parameters of reference PGM, -ef sought depend both on the geometry of the reference frame 10 and the morphology of the TS head of the wearer. The examples and definitions given with reference to step d1) of the first embodiment of determining custom geometrical parameters apply here. Step d2) In step d2), at least one value of at least one customization geometrical parameter Ppe ,, of said personalized equipment 15 is determined from the values of the geomorphologic reference parameter PGM, -ef determined at least once. step c2) and the reference geometrical parameter of said reference frame 10 determined in step a2). The description made of step e1) applies to step d2) of this embodiment. Whatever the embodiment envisaged, the customization geometrical parameter determined in step e1) or d2) comprises at least one of the following parameters: the curvature angle, the pantoscopic angle, the length branches, - the width of the bridge, - the shape or dimensions of the frame, for example the width or height of the circles of the personalized frame, or the contour of the ophthalmic lenses in the case of a customized frame without a circle or semi-circled, - the positioning or orientation of the support elements of the custom mount on the nose N of the wearer, in particular pads when the personalized frame includes, or sometimes the edge of the custom frame, in the case of a custom plastic mount with no pads. As mentioned above, whatever the embodiment envisaged for the determination of the geometric personalization parameter Pperso, the personalized frame being intended to accommodate corrective ophthalmic lenses, the value of said custom personalization geometry parameter P of the personalized frame can be determined based on visual correction data of the lenses. In this case, the personalization adjustment criterion is determined according to the visual correction made by the lenses.
[0034] Indeed, in some cases of use, it is difficult to reconcile the protective properties of the optical equipment, for example against the sun or dust and the prescription of the wearer, that is to say the visual correction performed by the lenses mounted in the mount of this equipment. Indeed, non-personalized frames offering satisfactory protection are generally strongly curved. Consequently, for both technical and aesthetic reasons, the ophthalmic lenses intended to be mounted in such non-personalized frames must have a front face whose curvature is in agreement with the curvature of the frame.
[0035] Ophthalmic lenses providing correction of a visual defect of the myopia type are poorly suited to be mounted in this type of frame because they have a flatter front face than the shape of the frame. In order to personalize all the optical equipment of the wearer, it is therefore possible to envisage determining the curvature of the frame as indicated above. Determination of the Geometric Definition of the Custom Mount For this purpose, a geometrical definition of said personalized mount is then preferably determined based on at least said determined personal geometry parameter Ppemo and the reference mount form chosen by the wearer ( 600 in Figure 7). Several alternative embodiments are envisaged to determine the custom mount. Whatever the embodiment variant envisaged, this step of determining the personalized frame comprises the following sub-steps, which will be illustrated below with reference to the various variants: - verification of the feasibility of producing the personalized frame (and the associated optical equipment) and - returning information to a user of the result of the verification.
[0036] These steps ensure that the custom mount defined is correct before any manufacturing step, design, adjustment of the latter. Thanks to these steps, it is possible to more specifically determine optical equipment compatible with the feasibility of the frame and / or ophthalmic lenses or which can accommodate the ophthalmic lenses according to the prescription of the wearer. Advantageously, it is furthermore ensured that the determined personalized frame does not come into contact with the wearer's head TS outside predefined contact zones. This avoids any unwanted interference zone between the custom mount and parts of the wearer's TS head. Some porters are sometimes limited in the choice of frames by the shape of their heads. For example, a wearer with a face too round with prominent cheekbones will not be able to choose a mount whose overall vertical dimension is too large. The method according to the invention makes it possible to check and modify, if necessary, for example the size of the personalized frame in order to prevent the cheekbones from being in contact with the lower part of the circles of the personalized frame. In the same way, it is possible to check and adapt, where appropriate, the personalized frame so that the upper part of the circles of the personalized frame is not in contact with the wearer's eyebrows. A first embodiment consists of starting from a pre-existing original frame to deform so as to obtain the desired custom mount. Thus, the determination of the geometrical definition of said personalized frame comprises the substep according to which the geometrical definition of the initial frame is deformed so that the geometrical definition of the personalized frame, resulting from this deformation, is in conformity with said geometrical parameter of customization Pperso wanted.
[0037] Said pre-existing initial frame is in priority the reference frame 10 real or virtual chosen by the wearer. However, if it appears for example that the choice of the reference mount 10 is not adapted to the shape of the wearer's head or to its visual correction for example, a new initial mount can be selected. As this new initial frame may have a shape and characteristics of dimensions and / or material different from that of the reference frame 10, a preliminary sub-step of acquiring a predefined initial geometric definition of this initial frame is provided.
[0038] The acquisition of the initial geometrical definition of the initial mount corresponds for example to a measurement of a geometrical magnitude of the actual initial mount or to the determination by calculation of such a geometrical magnitude in the case of a virtual initial mount . For example, the curve angle of the initial frame is determined.
[0039] During the deformation step of the initial geometrical definition, if the measured or calculated geometrical magnitude, for example the curve angle, is not equal, in the definition of the initial frame, to the value of the geometrical parameter of customization Ppe ', corresponding, the geometrical definition of the initial frame is modified so as to obtain, for the custom mount, the desired value of this geometrical quantity, for example the curve angle. These sub-steps can be performed virtually, by deforming by calculation the definition of the initial frame so as to obtain a model of the custom mount, that is to say a virtual custom mount, or actually, then directly deforming the initial frame, which then constitutes said geometric definition of the initial frame, so as to obtain a real custom mount. In the first case, the necessary deformation or deformations of the initial frame are then determined so that the geometrical definition of the personalized frame conforms to said personal geometrical parameter P - pers. Once the necessary deformations of the initial frame determined, one carries out a referral of information on the adequation between the capacity to deform the initial frame and the necessary deformation thereof.
[0040] Thus, the computer and electronic means preferably perform this additional step of returning information on the adequacy between the ability to deform the frame and the necessary deformation of the initial frame determined. The computer and electronic means can be programmed to deduce from the necessary deformation of the determined frame, a difficulty level of the deformation of the initial frame to obtain the custom mount. This level of difficulty is transmitted to the optician who can then advise the wearer to choose another initial mount if the deformation proves too difficult.
[0041] An alert can also be issued if the deformation is impossible, for example if the necessary deformation exceeds the mechanical limits of the frame and may damage it. Indeed, it is possible to provide constraints to these deformations and / or limit values of deformation not to exceed the risk of damaging the frame, which may depend on the material of the frame. It can thus be provided in a first embodiment that the deformations are performed without adding material and remaining within the limits of elastic deformation of the constituent materials of the initial frame. In this context, the deformations to be implemented are those which remain in a field close to the elastic domain of the material constituting the initial frame. Moreover, it is very difficult or impossible to adjust the spacing of the support zones on the nose on plastic mounts because these zones are directly integrated into the circles of the frame which do not have support elements as well. flexible than platelets. It is also possible in a second embodiment to define at least partially, without constraint, the custom mount. This can be done for example from a pre-existing mount, deforming it so as to obtain the desired custom mount by allowing additions 30 of material and therefore non-elastic deformations of the material of the initial mount. The deformation of the initial frame can thus be achieved without conservation constraint of at least one of the following dimensions of the initial frame: the perimeter of the circles, the length of the branches, the nose bridge length of the initial frame. The definition of the customized equipment is then determined at least partially according to the personalized geometrical parameters P pers to be obtained, on the basis of the initial frame chosen, but without being limited to elastic deformations. When the feasibility of the custom mount is confirmed, the deformities evaluated in the previous step are physically applied to the initial mount to obtain the custom mount. In practice, the following deformations of the initial frame are envisaged in order to respect the geometric parameters of personalization Pperso determined. To adjust the positioning of the circles in front of the eyes and / or to limit the contact areas between the circles of the personalized frame and the cheekbones J or the eyebrows SCD, SCG of the wearer, it is possible to modify the gap between the pads of this frame. custom mount. The nose having a trapezoidal shape, the smaller the gap between the pads, the more the custom mount will be positioned high on the wearer's face. The arms of the platelets can also be adjusted to move the platelets closer to or closer to the circles of the personalized frame and thus to modify the distance between the eyes OD, OG and the ophthalmic lenses that will be worn by the personalized frame 10. To ensure the horizontality of custom mount and adjust the pantoscopic angle, we can change the inclination of the branches relative to the circles of the custom mount. This also makes it possible to adjust the contact between each branch and the groove S of the corresponding ORD ear ORG of the wearer. To ensure the horizontality of the custom mount on the wearer's TS head relative to the eyebrows or in relation to the eyes, it is necessary to tilt down the branch on the side of the lower circle or to tilt up the branch on the side of the highest circle.
[0042] Depending on the height of the ears ORD, ORG with respect to the eyes, the branches can be tilted downwards to increase the pantoscopic angle, which favors near vision of the wearer or inclines the branches to decrease the pantoscopic angle, which allows in particular to limit the contact between the bottom of the circles of the frame and the cheekbones.
[0043] The opening of the branches is initially symmetrical. However, if the face of the custom mount, which includes the circles and the bridge, is not parallel to the wearer's face, the parallelism can be adjusted by opening the branch on the side of the facade farthest from the wearer's face. .
[0044] For custom frames with arm-mounted pads that are not integrated into circles, it is also possible to change the distance between the pads' contact surfaces and the circles of the custom mount, as well as the face angle and the hunting angel of each wafer. The modification of the initial frame can also take into account certain limitations or constraints induced by the visual correction of the ophthalmic lenses intended to be mounted in the personalized frame. For example, the thickness of the ophthalmic lens is taken into account. For example, a highly myopic ophthalmic lens will be made with a flat base front. The curve angle of the custom mount 15 must then be limited. Conversely, for hyperopic ophthalmic lenses that have a large curvature, the curvature angle of the custom frame may be greater. When the deformation of the initial frame is free from any stress, depending on the shape of the wearer, the shape of the optical equipment is defined locally or globally. Customized equipment can be adapted to the size but also to the features of the face: nose slope, eyebrow shape, cheekbones, temporal orientation, for example. The following nonlimiting example concerns the creation or modification of the shape of the frame contour (and therefore of the equipment) as a function of the data of the wearer's face. In this example, the reference geometrical parameter of step a1) is a set of points Ps of coordinates (Xs, Ys, Zs) defined from the mounting circle and over an angular sector covering at least the length of the eyebrow. carrier when the latter is seen from the front. In particular, the upper zone of the face and the eyebrow curves SCG and SCD are modeled in step b1) and then the positioning is carried out according to ci). A PGM geometrical-morphological parameter is used, ef from step d1) consisting of a collection of distances Cs between the points Ps of the reference frame 10 and the singular points of the head TS of the wearer.
[0045] The points used to construct this collection of distances are chosen by equidistant sampling. The distances forming the collection are then evaluated between the points Ps and their respective projection P's on the face. A personalization adjustment criterion is then used on the collection Cs of distance so that each of the distances of the collection Cs is in a range of length, for example from 1 millimeter to 10 millimeters. The custom geometric parameter Ppers obtained in step el) is then determined by calculation. It is defined as a set of points P "s of coordinates (X" s, Y "s, Z" s) for which the customization adjustment criterion is satisfied. In an exemplary embodiment, the points P "s can be obtained from the points Ps so that the overall shape of the frame is respected.An additional constraint can be imposed between the coordinates of the points Ps (Xs, Ys, Zs ) and P "s (X" s, Y "s, Z" s) for example such that X "s = Xs and Y" s = Ys and Z "s = f (Zs), In this case the custom equipment is achieved by changing the coordinates of the points along the axis 01Z1. In another embodiment, the overall shape of the frame can be modified. In this framework, the relation between the points Ps and P "s includes a constraint of the type X" s = k * Xs and Y "s = Ys and Z" s = f (Zs). The custom equipment is then made by changing the size of the circles of the frame along the axis 01X1. In the case where the shape of the frame can be modified locally, the relationship between the points Ps and P "s includes a constraint derived from the eyebrow curve SCG (respectively SCD) .The personalized equipment is thus realized by the modification of The shape of the circles of the frame so as to transpose on the right circle the shape of the curve SCG The stress is then defined point by point between the points Ps and the points of the eyebrow of the wearer in a limited angular sector.
[0046] Other curves coming from the middle zone of the face will be able to serve in the same way to modify the shape of the outline. According to the principle stated above it is possible to define other geometric parameters based on the horizontal and vertical meridians of the face rather than the eyebrows to define for example the curvatures of the frame and / or the ophthalmic lens. Implicitly, the parameters of the frame such as the dihedral angle, the pantoscopic angle according to these features of the wearer's face are thus defined. The following nonlimiting example concerns the determination of the custom geometric parameter P pers ° of bridge length Lp. In this case, the reference geometrical parameter of step a1) is the length of the bridge Lp. This length is determined for example by the shortest distance between the points Ps (g) and Ps (d) from the respective left and right mount shapes. The geometric-morphological reference parameter PGMref determined is the contact zone on the nose of the wearer. The customization adjustment criterion is the correct position of the pads 16 A. The new value of the length of the custom bridge is established from the points of the personalized circles P "s (g) and P" s (d) such that P "s (g) = f (Ps (g)) and X" s (g) = Xs (g) + kxg with kxg defined as a constant calculated to satisfy the adjustment criterion on the left, and P "s (d) ) = f (Ps (d)) and X "s (d) = Xs (d) + kxd for the right side. The length of the custom bridge is defined by the following relation: Lp "= Lp + kxg + kxd The possibilities of deformation of the initial frame are very numerous.They can be obtained alone or in combination of the examples cited above. This type of determination is advantageously used when it comes to pierced frames, the frame shape characteristics are then easy to implement directly on the ophthalmic lenses during the trimming, and optionally in this case the geometrical-morphological parameter is used to define the curvature of the front face of the lenses Furthermore, it can be provided to impose a constraint ensuring that the overall shape of the frame is preserved, so that the wearer recognizes the initial frame chosen in the customized frame obtained. constraint 30 can for example result in permitted ranges of values for the different possible deformations es of the initial mount. For example, it is possible to provide that the diameter of the circles is not changed by more than 10%, that the length of the branches or the total width of the front of the frame is not enlarged or shrunk by more than 10%. when the circle is described in the boxing system, the ratio of the horizontal and vertical dimensions associated with the rectangle circumscribed by the shape is not modified by more than 10 (Yo, etc ... The definition obtained from the custom mount is then a definition virtual in the form of a custom mount template.
[0047] At least a portion of the custom mount conforming to this definition is then manufactured by molding or machining in the case of a custom plastic mount, by digitally controlled shaping in the case of a custom metal mount or by any other means. other manufacturing means known to those skilled in the art.
[0048] Custom mount can be achieved at least partially by additive rapid prototyping. In a second variant embodiment of the step of determining the custom mount, the determination of the geometric definition of said personalized mount includes access to a predefined frame register containing, associated with each predefined frame, an identifier of the shape of the predefined mount and at least one geometrical parameter of this predefined mount and the search in this register of at least one predefined mount whose shape corresponds to the initial mount shape chosen by the wearer and whose geometry satisfies, with a margin predefined tolerance, the geometric parameter of said custom mount. This definition of the custom mount is then also a virtual definition in the form of a model of the custom mount. The computer and electronic means preferably perform an additional step of returning information on the adequacy between the geometry of the selected predefined frame and that of the initial frame determined. This referral is sent to a predetermined person such as the optician who can then advise the wearer to choose another initial mount if no frame meets the predefined tolerance. An alert can also be issued if the selection of a mount is impossible. When the feasibility of the personalized frame is confirmed, the final choice of the personalized frame is made. The custom mount can then be ordered or manufactured by any means known to those skilled in the art, as explained below.
[0049] Finally, in a third variant embodiment of the step of determining the personalized frame, the determination of the geometric definition of the personalized frame comprises the assembly of geometric definitions of component parts of the frame comprising at least one support element. nasal. In this variant, it is also possible to determine the personalized equipment by assembling stock lenses and component parts of the personalized frame. Complementary geometric definitions of the frame 10 include the branches and the circles of this frame. Each of these parts is respectively selected by a search in a register containing different shapes and / or dimensions of realization of the part concerned, of at least one shape and / or dimension of this part corresponding to the frame shape chosen by the wearer. and whose geometry satisfies, with a predefined tolerance, the geometric customization parameter Pperso. This definition of the custom mount and associated equipment is then also a virtual definition in the form of a custom mount template. According to this third possibility, a choice or a selection of the constituent parts of the personalized frame is made. The physical assembly of these pieces results in the manufacture of the custom mount. For this purpose, we select, in a set of predefined parts, those to build the custom mount. Each of these component parts is available in stock for a limited number of sizes. It can be different lengths of branches. It may also be forms of front face mounting more or less rounded or more or less curved. The computer and electronic means preferably perform an additional step of returning information on the adequacy between the selected assembly and the determined initial frame. This referral is transmitted to a user such as the optician who can then advise the wearer to choose another initial mount if no assembly meets the predefined tolerance.
[0050] An alert can also be issued if the selection of an assembly is impossible. When the feasibility of the custom mount is confirmed, the assembly is selected and the physical assembly is performed.
[0051] Whatever the possibility used to determine the geometrical definition of the custom mount, after having determined the geometrical definition of said custom mount, this geometrical definition is transmitted to the wearer for validation by him or to the optician for control purposes. mounting.
[0052] For example, we can imagine returning a representation of the mount in the form of an abacus where some dimensions of the frame such as the curve angle, the pantoscopic angle, the mounting height, etc. can be shown. consider returning a custom mount model allowing the wearer to perform a virtual fitting of the custom optical equipment. During this virtual fitting, the modeling of the custom frame is superimposed on the modeling of the wearer's TS head and a graphic representation of this superposition is displayed for the wearer. After having determined the geometrical definition of said personalized mount, a geometrical and morphological parameter is preferably deduced, related to the relative position of said personalized mount relative to the wearer's head, and information is returned on the conformity of the personalized mount. obtained by this geometric definition to the customization adjustment criterion.
[0053] In practice, for this purpose, the computer and electronic means can perform a simulation of the positioning of the custom mount obtained on the wearer's head and an additional step of returning information indicating a final relative position of the customized frame on the head of the carrier.
[0054] Advantageously, the superimposition of the custom mount model on the wearer's TS head determines the optimal positioning of the personalized optical equipment on the wearer's TS head. The determined port parameters may be used in the optical design of ophthalmic lenses, replacing port parameters measured on the wearer. Optimization during the optical design of the lenses is then more precise. Whatever the embodiment variant envisaged, it is thus possible to provide for the return of information on the feasibility of manufacturing the custom mount, for example after determining the geometric definition of said custom mount. It is indeed possible to check the compatibility of the geometry of the customized frame obtained with the manufacturing information: for example, the characteristics of the personalized frame are compared with the minimum and maximum values of the width of the bridge, and / or the curvature angle, and / or pantoscopic angle, and / or limb length, and / or curvature of ophthalmic lenses. If certain characteristics of the custom mount are outside the range of minimum and maximum values possible for the manufacture of the custom mount, the custom mount can be corrected by imposing the nearest permitted values for these characteristics. A new definition of the custom mount is then determined and the geometric-morphological parameters associated with this new definition can then be determined in order to verify that the personalized adjustment criteria are respected. If this is not the case, it is possible to send an alert to the user. In the case where the geometric definition of the personalized frame is real, it is possible to perform a real fitting and measurements such as those described during the realization of step d2) for the reference frame to verify that the criteria custom fit are well respected. This information is transmitted to the operator and can be a decision aid in the choice of the eyeglass frame. In general, whatever the embodiment considered, the acquisition of data relating to at least one morphological quantity of the carrier head TS is carried out on a first site and the determination of the value of said at least one geometrical parameter of customization of the frame is performed on a second site separate from the first. The first site is preferably located in any location accessible either physically by the wearer or on a server, while the second site is located at an optician, in an optical equipment assembly laboratory, or at a supplier's location. optical equipment online. The manufacture of the personalized frame is carried out on a third site, distinct from the first site, which is either distinct from or confused with the second site. The determination of the definition of the personalized frame and the manufacture of the custom mount takes place on a third site, distinct from the first site, which is either distinct or confused with the second site.
[0055] It is planned to transmit the data relating to at least one morphological quantity of the head TS of the wearer from the first site to the second site, the transmission of the value of the at least one personal geometry parameter P pers ° of the custom frame of the second site to the third site and the referral, from the third site, the definition of the custom mount and / or custom mount from the third site to the first. In practice, from the first site located in the optician's shop or the wearer's shop, at least the morphological and refractive data of the wearer are sent to the second site.
[0056] The second site is a remote specialized computing site that performs the calculation of the custom equipment. The geometry data on the initial mount can be either transmitted from the first to the second site, or retrieved by the second site in a local or remote database.
[0057] The definition of the personalized equipment calculated on the second site is preferably sent back to the first site so that the optician and / or the wearer can validate this equipment, in particular after a virtual fitting. Optionally, a message indicating the impossibility of customization can be returned to the first site.
[0058] After validation, the second or third site passes the definition of the custom equipment to the third manufacturing site. The second site can also directly transmit the definition of the custom equipment to the third manufacturing site of this customized equipment.

权利要求:
Claims (16)
[0001]
REVENDICATIONS1. A method of determining a geometrical definition of a personalized optical equipment adapted to its wearer, comprising at least one geometrical definition of a personalized frame of this personalized equipment, according to which the geometrical definition of said personalized frame is determined as a function of at least one geometrical parameter of personalization (Ppe ') of the frame and of a reference mount (10) chosen by the wearer, the value of said at least one geometrical parameter of personalization (Pperso) of the frame being determined from the acquisition of data relating to at least one morphological quantity of the head (TS) of the wearer, such that the personalized frame is adjusted in accordance with at least one adjustment criterion for customizing the frame geometry relative to the morphological magnitude of the wearer's head (TS).
[0002]
2. The method according to claim 1, wherein the geometrical definition of said personalized optical equipment further comprises a geometric definition of personalized ophthalmic lenses intended to be mounted in said personalized frame, the geometric definition of the ophthalmic lenses being determined according to the definition. geometric custom frame.
[0003]
3. The method according to claim 1, wherein the mount is intended to accommodate visual correction lenses, the value of said geometrical customization parameter of the custom mount is determined according to the visual correction performed by the lenses.
[0004]
4. The method of claim 1, wherein said customization adjustment criterion comprises a constraint on at least one of the following geometric-morphological parameters, related to the relative position of said custom mount relative to the wearer's head: - a relative position of the branches of the custom mount relative to the ears (ORD, ORG) of the wearer, - a spacing of the branches of the personalized frame, defined according to a determined gap between the ears (ORD, ORG). an evaluation of the contact surface between the support elements of the custom mount and the nose of the wearer, a relative position of the circles of the personalized frame and the eyes (OD, OG) of the wearer; relative position of the lenses mounted on the personalized frame 5 and the eyes (OD, OG) of the wearer, - a distance between at least one singular point of the circles of the personalized frame and at least one singular point of the wearer's head, - a distance between at least one singular point of the contour of the lenses mounted on the personalized frame and a singular point of the wearer's head, 10 - a geometry of the contour defined according to an eyebrow geometry (SCD, SCG), of the eyebrow arch (SC) or the cheekbone (JS) of the wearer, - an angle between a line connecting the cheekbone (JS) and the brow bone (SCS) and a median plane of the circle (PMC) of the custom mount arranged next to me in a plane perpendicular to said mean plane of the rim of the frame, - an angle between a line connecting a sphenoid point (P1) and a point (PN) of the wearer's nose wing and the average plane of the circle (PMC). ) corresponding to the mount, measured in a plane parallel to a Frankfurt plane (PF) of the head (TS) of the wearer. 20
[0005]
5. Method according to one of the preceding claims, wherein the geometric definition of said custom mount includes access to a frame register containing, associated with each frame, an identifier of the shape of the frame and at least one geometric parameter. of this mount and the search in this register of at least one mount whose shape corresponds to the mount shape chosen by the wearer and whose geometry satisfies, with a predefined margin of tolerance, the geometrical parameter of personalization (Pperso) of said custom mount.
[0006]
6. Method according to one of the preceding claims, according to which, to determine the geometric definition of said custom mount: - a geometric definition of an initial frame is deformed so that the geometrical definition of the personalized frame, resulting from this deformation , in accordance with said geometric personalization parameter (Pperso), with a fitting on the head (TS) of the wearer conforming to said personalization adjustment criterion.
[0007]
7. Method according to claim 6, wherein the necessary deformation of the initial frame is determined so that the geometrical definition of the personalized frame is in accordance with said geometrical parameter of personalization (P let a referral of information on the adequacy between perso, the ability to deform the initial mount and the necessary deformation thereof.
[0008]
8. Method according to one of claims 6 to 7, wherein the deformation of the initial frame is performed without conservation constraint of at least one of the following dimensions of the initial frame: the perimeter of the circles, the length of the branches, the nasal bridge length of the initial mount, the initial mount contour curvature.
[0009]
9. Method according to one of the preceding claims, wherein after determining the geometric definition of said custom mount, this geometric definition is transmitted to the carrier for validation by him.
[0010]
10. Method according to one of the preceding claims, wherein, after determining the geometric definition of said custom mount, it deduces a geometric-morphological parameter related to the relative position of said custom mount relative to the head (TS) of the carrier and an information return is provided on the conformity of the personalized frame obtained by this geometric definition to the personalization adjustment criterion.
[0011]
11. The method as claimed in one of the preceding claims, wherein information is returned on the feasibility of manufacturing the personalized frame or the personalized equipment.
[0012]
12. Method according to one of claims 1 to 4, wherein the determination of the geometric definition of the personalized equipment comprises assembling geometric definitions of parts of the frame such as the branches, the nose support elements and the circles, each of these parts being respectively selected by a search in a register containing different shapes and / or dimensions of realization of the part concerned, of at least one shape and / or dimension of this part corresponding to the selected frame shape by the carrier and whose geometry satisfies, with a predefined margin of tolerance, the geometrical parameter of personalization (P perso) -
[0013]
13. Method according to one of the preceding claims, wherein the acquisition of data relating to at least one bearer head morphological quantity (TS) is performed on a first site and the determination of the value of said at least one geometric parameter. customization of the frame is performed on a second site separate from the first.
[0014]
14. The method of claim 13, wherein the first site is located in any location accessible either physically by the wearer or on a server, while the second site is located at an optician in an equipment assembly laboratory. optics, or at an online optical equipment supplier.
[0015]
15. Method according to one of claims 13 and 14, wherein the manufacture of the custom mount takes place on a third site, distinct from the first site, which is either separate or coincides with the second site.
[0016]
16. The method according to claim 15, wherein the transmission of data relating to at least said morphological quantity of the head (TS) of the wearer and an identifier of the reference frame from the first site to the second site is provided, transmitting the value of said at least one geometrical parameter of personalization (P 1 of the personal custom mount, the second site to the third site and the return, from the third site, of the definition of the personalized frame and / or custom mount from the third site to the first.20

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引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

US4762407A|1984-02-10|1988-08-09|Wilhelm Anger|Process for preparation of spectacles|

---

EP1011006A1|1997-05-16|2000-06-21|Hoya Corporation|System for making spectacles to order|

---

US20030123026A1|2000-05-18|2003-07-03|Marc Abitbol|Spectacles fitting system and fitting methods useful therein|FR3039662A1|2015-07-31|2017-02-03|Essilor Int |METHOD OF VERIFYING CONFORMITY TO A PREDETERMINE USE CRITERION OF A GLASSES FRAME|

---

WO2017060639A1|2015-10-09|2017-04-13|Essilor International |Method for testing the feasibility of a pair of spectacles|

---

EP3425447B1|2017-07-06|2019-09-11|Carl Zeiss Vision International GmbH|Method, device and computer program for virtual adapting of a spectacle frame|

---

EP3410397A4|2016-01-25|2019-10-16|Ópticas Claravisión, S.L.|Method for producing lenses and frames with personalised design and remote bevelling of corrective lenses, and optical device for morphological measurement for performing said method|

---

EP3425446B1|2017-07-06|2019-10-30|Carl Zeiss Vision International GmbH|Method, device and computer program for virtual adapting of a spectacle frame|FR2652893B1|1989-10-06|1993-03-19|Essilor Int|CONTOUR READING APPARATUS, PARTICULARLY FOR GLASSES.|

---

JPH0535827A|1991-05-10|1993-02-12|Miki:Kk|Spectacles selection and designing system|

---

JP2751145B2|1993-12-15|1998-05-18|株式会社三城|Eyeglass shape design design system|WO2016164859A1|2015-04-10|2016-10-13|Bespoke, Inc.|Systems and methods for creating eyewear with multi-focal lenses|

---

CN105842875B|2016-06-07|2018-07-24|杭州美戴科技有限公司|A kind of spectacle frame design method based on face three-dimensional measurement|

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FR3065821A1|2017-04-27|2018-11-02|Frederic Clodion|DEVICE FOR MEASURING 3D MEASUREMENTS AND VIEWS FOR DETERMINING THE MORPHOLOGICAL PARAMETERS OF THE FACE FOR THE PURPOSE OF MANUFACTURING CUSTOM EYEWEAR|

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US11238611B2|2019-07-09|2022-02-01|Electric Avenue Software, Inc.|System and method for eyewear sizing|

法律状态:
2016-01-26| PLFP| Fee payment|Year of fee payment: 3 |

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2017-01-25| PLFP| Fee payment|Year of fee payment: 4 |

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2018-01-25| PLFP| Fee payment|Year of fee payment: 5 |

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2018-07-06| TP| Transmission of property|Owner name: ESSILOR INTERNATIONAL, FR Effective date: 20180601 |

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2020-01-27| PLFP| Fee payment|Year of fee payment: 7 |

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2021-01-25| PLFP| Fee payment|Year of fee payment: 8 |

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2022-01-25| PLFP| Fee payment|Year of fee payment: 9 |

优先权:

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申请号 | 申请日 | 专利标题

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FR1450019A|FR3016052B1|2014-01-02|2014-01-02|METHOD FOR DETERMINING A GEOMETRIC DEFINITION OF A CUSTOM OPTICAL EQUIPMENT|

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FR1450019|2014-01-02|FR1450019A| FR3016052B1|2014-01-02|2014-01-02|METHOD FOR DETERMINING A GEOMETRIC DEFINITION OF A CUSTOM OPTICAL EQUIPMENT|

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US15/109,549| US10108028B2|2014-01-02|2014-12-22|Method for determining a geometric definition of a customized optical device|

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EP14830997.4A| EP3090307A1|2014-01-02|2014-12-22|Method for determining a geometric definition of a customized optical device|

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PCT/FR2014/053502| WO2015101736A1|2014-01-02|2014-12-22|Method for determining a geometric definition of a customized optical device|

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CN201480071992.5A| CN105874378B|2014-01-02|2014-12-22|Method for determining a geometric definition of a custom optical device|