Abstract:
A method for manufacturing a corrective ophthalmic glasses lens personalized for a wearer, includes defining and digitally recording the configuration parameters of the lens, calculating modeling data of the refractive faces of the lens, and manufacturing the lens in accordance with the configuration parameters. The method includes the following steps: recording at least one ordered execution sequence of different interactive configuration software modules, each module being associated with one of the configuration parameters and including, in a graphical interface, selecting at least one configuration parameter value associated with the module from a preselection of values of the parameter, graphically simulating a virtual lens obtained with the selected value of the configuration parameter, confirming the selection of a configuration parameter value, executing the at least one ordered sequence; at the end of the execution of each module, recording the selected, confirmed value of the configuration parameter associated with the module.

Description:
TECHNICAL FIELD OF THE INVENTION 
     The present invention relates generally to the field of the manufacture of corrective ophthalmic spectacle lenses. More precisely, the invention relates to a procedure making it possible to personalize a corrective lens by selecting a set of configuration parameters such as the material, the optical power function, the color, the surface treatment(s), the chromaticity, while taking into account especially the vision behavior of the spectacle wearer, that is to say of the envisaged use of the spectacles for car driving and/or at the office. 
     It relates more particularly to a procedure making it possible to graphically display a plurality of configuration parameters for an ophthalmic correction lens and to progressively select the various configuration parameters, while taking account especially of the optical design parameters and morphological parameters of the wearer, so as to rapidly determine an optimal personalized correction lens. 
     It relates in particular to a configuration procedure for the manufacture of correction lenses of uni-, bi- or tri-focal type, of varifocal lenses or of progressive lenses. 
     PRIOR ART 
     The personalization of corrective ophthalmic lenses relies on the selecting by the future wearer of spectacles of a certain number of options from among a set of configuration parameters proposed for example by a consultant optician. 
     However, the choice of certain configuration parameters, for example the material of the lens, combined with the lens design parameters, may be incompatible with other parameters such as the frame selected. It is essential to be able to offer a wearer a personalized lens achievable as a function of the prescription and of the set of configuration parameters selected. Moreover, it is desirable that the selection of the set of configuration parameters be performed in the shortest possible time span. 
     SUMMARY OF THE INVENTION 
     In order to remedy the aforementioned drawback of the prior art, there is proposed, according to the present invention, a method for manufacturing a corrective ophthalmic spectacle lens personalized for a wearer, comprising the steps of:
         defining and recording, by computer, configuration parameters of the lens, these configuration parameters comprising optical design parameters of the lens, including a refraction correction prescription for the wearer and an optical design model,   manufacturing the lens in accordance with the configuration parameters.       

     To define the configuration parameters of the lens, the method comprises the following steps:
         recording at least one ordered sequence of execution of various interactive configuration software modules, each module being associated with one of the configuration parameters and comprising, in a graphical interface, means of selection of at least one configuration parameter value associated with the module from among a preselection of values of this parameter, means of graphical simulation of a virtual lens obtained with the selected value of the configuration parameter, means of validation of the selection of a value of the configuration parameter,   executing said at least one ordered sequence;   on completion of the execution of each module of said at least one ordered sequence, recording the selected and validated value of the configuration parameter associated with this module.       

     Advantageously, the method comprises, on completion of the execution of a module of said ordered sequence, a step of using the configuration parameter value selected and validated at the end of the execution of said module, so as to determine a preselection of values of the configuration parameter for a subsequent module of said sequence. 
     Advantageously again, there is moreover envisaged the recording of a plurality of ordered sequences of execution of the modules and the selection, from among the latter, of a sequence according to which the modules are executed. 
     Typically, the configuration parameters of the lens comprise manufacturing parameters of the lens, including the distribution of the optical power function, the material of the lens, the color of the lens, the polarization of the lens, the surface treatment(s) including anti-reflection treatment, impact resistance treatment, anti-scratch treatment, antistatic treatment, water-repelling treatment, grease-repelling treatment, polarizing treatment, the photochromy property of the lens, and/or geometric and morphological parameters relating to the wearer and to a spectacle frame. 
     In a first particular embodiment of the method for manufacturing a corrective ophthalmic lens, the execution of at least one of the modules comprises the following steps:
         selection of at least one image representative of a visual setting and display of said image as background layer of an area of the graphical interface of the module concerned;   simulation of a corrective filter associated with the selected value of the configuration parameter of the lens;   display of the corrective filter superimposed by transparency on the background layer, so as to simulate the vision of the wearer through a virtual lens personalized in accordance with the selected value of the configuration parameter associated with the module.       

     In a variant of the first embodiment, the method for manufacturing a corrective ophthalmic lens furthermore comprises the following steps:
         selection of a second image representative of a visual setting and display of said second image as background layer of a second area of the graphical interface of the module concerned;   simulation of a second corrective filter associated with another value of the configuration parameter of the lens;   display of the second corrective filter superimposed by transparency on said second image as background layer of the second graphical area so as to simulate the vision of the wearer through a second virtual lens personalized in accordance with the other value of the configuration parameter, so as to allow the comparison of at least two personalized virtual lenses.       

     In a second particular embodiment of the method for manufacturing a corrective ophthalmic lens, the execution of at least one of the modules comprises the following steps:
         selection of at least one view of the wearer and display of said view of the wearer as background layer of an area of the graphical interface of the module concerned;   simulation of a filter of shape and of aspect of the lens as a function of the selected value of the configuration parameter associated with the module;   display of the filter of shape and of aspect of the lens superimposed by transparency on the background layer so as to simulate an image of the lens worn by the wearer and personalized in accordance with the selected value of the configuration parameter associated with the module.       

     In a first variant of the first or of the second embodiment, the step of selecting at least one image and/or at least one view of the wearer comprises the selecting of a sequence of images or of an image in three dimensions. 
     In another variant of the first or of the second embodiment, the step of simulating a filter comprises the dynamic simulation of a filter by a sequence of images or by an image in three dimensions. 
     Advantageously, the method furthermore comprises the display of a textual content as a function of the selected value of the configuration parameter associated with the module. 
     In a preferred manner, the method for manufacturing a corrective ophthalmic lens furthermore comprises a step of selecting a spectacle frame. 
     Advantageously, the manufacture method comprises a module for choosing lens contour in the guise of configuration parameter, this module comprising, in its graphical interface, means for selecting at least one lens contour from among a preselection of lens contours associated with various spectacle frames, means of graphical simulation of a virtual lens exhibiting the selected contour and means for validating the selection of a lens contour. 
     Preferably, the method for manufacturing a corrective ophthalmic lens furthermore comprises a step of presenting the values of the various configuration parameters selected and validated on completion of the execution of said at least one ordered sequence. 
     In an advantageous manner, the method for manufacturing a corrective ophthalmic lens furthermore comprises a step of verifying the feasibility of a corrective ophthalmic lens in accordance with the values of the various configuration parameters selected and validated on completion of the execution of said at least one ordered sequence. 
     Preferably, the method for manufacturing a corrective ophthalmic lens furthermore comprises a step of constructing at least one preselection of values, associated with a configuration parameter. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWING FIGURES 
       The following description and the appended drawings to which it refers, which are given by way of nonlimiting example, will allow what the invention consists of and how it can be carried out to be understood. 
       In the appended drawings: 
         FIG. 1  is a block diagram representing the various steps of the procedure of the invention; 
         FIG. 2  is a view of a graphical interface of a general module for presenting and selecting a set of configuration parameters according to a particular embodiment; 
         FIG. 3  is a view of a graphical interface of a general module for presenting and selecting a set of configuration parameters according to another particular embodiment; 
         FIG. 4  is a view of a graphical interface of a configuration module according to a particular embodiment; 
         FIG. 5  is a block diagram representing the various areas of a graphical interface of a configuration module; 
         FIG. 6  is a first exemplary graphical interface of a configuration module for the selection of a type of lens in vision mode; 
         FIG. 7  is an exemplary graphical interface of another configuration module for the selection of the tint and/or photochromy of a lens; 
         FIG. 8  is an exemplary graphical interface of a configuration module making it possible to graphically view various parameters of the lens (thickness and/or weight) as a function of the type of lens selected. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       FIG. 1  is a block diagram representing various steps of a procedure for determining the configuration parameters of a corrective lens or of a pair of corrective lenses. 
     The configuration parameters are very numerous. In the present document P 1 , P 2 , P 3  . . . Pi or . . . PM designates a particular configuration parameter, such as: the material of the lens, the design of the optical power function, the color of the lens, an anti-reflection treatment. Each of these configuration parameters may take a value from among a set of predefined values. The values of some of these parameters may be known in advance (the prescription generally defines the power correction values for far vision and for near vision) and may be recorded by computer for example. A certain number of other values of configuration parameters must be selected by the optician and/or the future wearer. 
     Once the optician and/or the future wearer have selected a set of values of configuration parameters of the lens and it is verified that the corresponding lens is indeed achievable, its manufacture can start. 
     This manufacture is then carried out according to the customary manufacturing steps, known to the person skilled in the art. In particular, the visual correction prescription, the material chosen for the lens, the optical design parameters of the lens and geometric parameters of the chosen frame (especially its contour) are used to calculate data for modeling the refraction faces of the lens and its contour, which data are transmitted to the manufacturing devices to obtain the desired lens. 
       FIG. 1  represents the general architecture of the software implementing the procedure of the invention. Configuration parameters P 1 , P 2 , P 3  . . . Pi . . . PN are recorded by computer. Mod 1 , Mod 2 , Mod 3  . . . Modi . . . ModN designate various interactive configuration software modules. Each module Modi is generally associated with one of the configuration parameters Pi. Nonetheless, a module Modi may be associated with several configuration parameters Pi. For example, the module Mod 1  may be associated with several configuration parameters P 1 , P 2 , P 3 . 
     These modules are integrated into a software application comprising data stored in a database and files, a graphical interface and scripts. This application is executed on a computer, a digital touch-sensitive tablet, a smartphone, etc. 
     The aim of executing a configuration module Modi is to lead to the selection of a value for the configuration parameter Pi associated with this module. Advantageously, the execution of a configuration module Modi comprises a graphical presentation of a simulation as a function of the selected parameter or parameters. On completion of the execution of a software module Modi, a value of the parameter Pi is validated and recorded by computer. The various modules may be executed in a mutually independent manner (example module Modx in  FIG. 1 ) or else in series (e.g. Mod 1  and Mod 2  in  FIG. 1 ). We pass sequentially from module Mod 1 , to module Mod 2  . . . Modi . . . Modj. When the parameters associated with the various useful modules have been validated and recorded, a module ModN makes it possible to verify the feasibility of the overall configuration of the lens. If the feasibility of the lens is confirmed, it is possible to pass to the step of selling the lens and to launch its manufacture. 
     Advantageously, the software application possesses means for defining a sequence of execution of the various modules so as to rapidly lead to a lens configuration which is both technically achievable and tailored to the needs of the wearer. 
       FIG. 2  is a view of a graphical interface  200  of a general module for presenting and selecting a set of configuration parameters according to a particular embodiment. The graphical interface  200  is displayed for example on a mobile telephone touchscreen or on a digital tablet. A file, represented on the graphical interface by an icon  201 , records the values of the configuration parameters relating to a corrective lens for a wearer. In an advantageous manner, the file corresponding to the icon  201  also contains geometric and morphological parameters relating to the wearer and to a spectacle frame. Various interactive configuration software modules Mod 1 , Mod 2 , Mod 3  . . . Modj are represented by shortcuts on the graphical interface  200 . The interface  200  makes it possible to select an ordered sequence of modules by a drag and drop action. On the interface  200 , several sequences Seq 1 , Seq 2 , Seq 3  are predefined. The sequence Seq 1  begins with the execution of the module Mod 1 , then of the module Mod 2 , of the module Mod 3  and terminates with the module Mod 4 . The sequence Seq 2  begins with the execution of the module Mod 4 , then of the module Mod 2  and terminates with the module Mod 3 . The sequence Seq 3  comprises a single module Modi. 
     By way of illustrative and nonlimiting example, the module Mod 1  may correspond to a configuration module for the optical design, that is to say the distribution of the optical power, of a lens with progressive focal length. The module Mod 2  may correspond to a configuration module for an anti-reflection treatment. The module Mod 3  may correspond to a configuration module for a tint and/or the photochromy of the lens. The module Mod 4  may correspond to a configuration module for the polarization of the lens. Finally, the module Modi may correspond to a configuration module for the thickness and the weight of the lens. 
     Choosing the sequence makes it possible to select the parameters which will be configured. Choosing a sequence also imposes the order in which the modules will be executed. On completion of each module, a configuration parameter is determined by recording a validated value of the parameter concerned. The graphical button  205  makes it possible to start the application, that is to say the execution of a selected sequence. 
       FIG. 3  is a view of another type of graphical interface  100  of an application for presenting and preselecting a set of configuration parameters. The graphical interface  100  is displayed for example on a computer screen. The graphical interface  100  is for example the optician&#39;s configuration interface, this interface  100  not necessarily being presented or accessible to a spectacle-wearing client. The graphical interface  100  comprises several preselection areas. A first preselection area  101  comprises icons B 1 , B 2 , . . . B 7  each corresponding to a static environment image B 1 , . . . B 6  or dynamic environment image B 7  and means  111  to select or to deselect each image. The selection means  111  may take various known forms, for example pop-up menu or area selectable by pressing the computer mouse button. The dynamic image B 7  may for example correspond to a film or to a view in three dimensions. The images B 1 , B 2  . . . B 7  may originate from photo or video images or else from simulation images. Each environment image B 1 , B 2 , . . . B 7  corresponds to a visual setting of use and is intended to simulate the setting of use as is detailed further on. The optician can thus limit the selection of the environment images which will be proposed for example to the images B 4  and B 6  from among the predefined environment images B 1 , B 2 , . . . B 7 . 
     A second preselection area  102  of the graphical interface  100  of  FIG. 3  comprises a lookup table for the correspondence between a list of sequences Seq 1 , Seq 2 , Seq 3  of execution of the software modules and a list of configuration parameters P 1 , P 2 , . . . PN. “Sequence” is intended to mean an ordered list of configuration software modules. Each configuration parameter P 1 , P 2 , . . . PN is associated with a software module respectively Mod 1 , Mod 2 , . . . ModN. For example, the configuration parameters P 1 , P 2 , . . . PN correspond respectively to a parametrization:
         of the optical design concept, that is to say the optical power function of the lens (P 1 ),   of the color of the lens (P 2 ),   of an anti-reflection treatment (P 3 ),   of the material of the lens (P 4 ),   of a view representative of a subject equipped with the lenses and/or with the frame (P 5 ),   of a snapshot of the wearer (P 6 ),   of a three-dimensional view (PN).       

     In the area  102 , the optician can define several sequences Seq 1 , Seq 2 , Seq 3  of execution of the various modules. At the intersection of a row corresponding to a configuration parameter and of a column corresponding to a sequence, a pop-up menu  112  makes it possible to select the parameter in the corresponding sequence and to define its execution serial number in the sequence. It is thus possible to define various sequences, while selecting for each sequence the parameters that it is desired to configure and the order of execution of the corresponding modules. For example the sequence Seq 1  is defined by the column of parameters in the following order of execution: P 2 , P 1 , P 3 , P 4 , P 6 , P 5 , PN. The sequence Seq 2  is defined by the column of parameters in the following order of execution: P 1 , P 6 , P 5 , P 4 . The sequence Seq 3  is not defined. 
     A third preselection area  103  of the graphical interface  100  of  FIG. 3  comprises two preselection lists presented side by side. It is for example possible to preselect a lens supplier Sup 1  and/or Sup 2 . Only the products of the supplier or suppliers thus preselected will thereafter be proposed and used during the execution of the configuration modules. For each supplier, it is possible to select one or more products from among a list of preselected products Prod 1 , Prod 2 , Prod 3 , Prod 4  corresponding to the supplier Sup 1  and respectively Prod 5 , Prod 6 , Prod 7 , Prod 8  corresponding to the supplier Sup 2 . This preselection area thus makes it possible to select, by computer, products from one or more supplier catalogs. The optician can thus select products that he desires to sell by priority during a certain time period. 
     A fourth preselection area  104  of the graphical interface  100  of  FIG. 3  comprises preselection means  114  for preselecting one or more colors of the lens. Another preselection area  105  of the graphical interface  100  of  FIG. 3  comprises preselection means  115  for preselecting one or more color transitions of the lens. 
     A button  108  makes it possible, by a mouse click, to validate the preselections of the various areas of the graphical interface  100 . The person skilled in the art will readily understand that the graphical interface  100  makes it possible to define a set of so-called favorite parameters, in particular the definition of the sequences, which are used thereafter for the execution of a configuration modules execution sequence. Other preselections corresponding to other parameters and/or other suitable preselection means are of course conceivable. 
     Let us assume that a particular sequence has been chosen. The validation of the sequence starts the sequential execution of one or more configuration modules. 
     The interface of  FIG. 3  represents an exemplary sales interface configurable as a function of profiles predetermined according to the following criteria: 
     a) Products  103 :
         a first criterion corresponds to the client segment and determines a list of products Sup 1 , Sup 2  (defined by their optical design, the materials, the surface treatments, etc.) accessible to a particular affiliate, a chain of shops and/or a category of clients;   a second criterion Prodi corresponds to the optician&#39;s favorite products (generic or particular progressive lenses, coloration, etc.). The second criterion makes it possible to refine the selection effected by the first criterion.       

     b) Environment  101 : 
     The environment indicates the profile of use of the spectacles (sea, mountain, indoor, outdoor, etc.). The environment can select a suitable background image as a function of the situation (background on which the simulation test is done is produced during the execution of a configuration module). 
     c) Navigation Favorites  102 : 
     The navigation favorites  102  serve to define an ordered sequence of various configuration modules to be executed one after the other. 
     d) Frames: 
     The interface can propose a choice of various frames to try on a range of lines (as a function of size, brand, shape, price, etc.). 
     e) Promotions by periods. 
     In an advantageous manner, the devising of predetermined lists is performed upstream, by the characterization of the combinations that are possible technically or from the commercial standpoint. 
       FIG. 4  schematically represents an exemplary graphical interface  10  of a configuration module Modx according to a particular embodiment. The graphical interface  10  comprises a graphical presentation area  11 , areas for displaying a textual content  15 ,  19  and various selection buttons  12 ,  13  and  18 . By way of example, the display area  19  makes it possible for example to display the name of the client. Each button  12  corresponds to a different value of a configuration parameter Px associated with the module Modx. For example, the parameter Px can correspond to the color of a lens, to be chosen for example from among white, black, brown or gray lens. The selection of a button  12  makes it possible to select a value prerecorded elsewhere of the configuration parameter Px. The graphical presentation area  11  may for example display in the background an image corresponding to an environment or a scene selected elsewhere. The graphical area  11  makes it possible to display in the foreground a colored filter corresponding to the selected value of the parameter Px superimposed on the environment image. The user can thus view the image of a scene through a lens of such and such a color. The selection of another button  12  selects another value of the color parameter and brings about the display of a corresponding colored filter. Each button  13  corresponds to a different action. For example, the buttons  13  can make it possible to select various environment images. The selection of a button  13  brings about the modification of the environment image displayed. A button  13  can also make it possible to execute an action, for example to horizontally and/or vertically modify the direction of the gaze in a three-dimensional view. The user can thus view the effect of the color of the lens in various visual settings such as: outdoors, indoors, on a light or dark background, in far vision, in near vision, etc. The areas for displaying a textual content  15  make it possible to display a short text in conjunction with the parameter or parameters selected. The prerecorded textual content displayed at  15  makes it possible to provide complementary information such as a piece of advice. The buttons  18  are buttons for passing to the graphical interface of a previous module or of a next module in the sequence. The selection of a button  18  makes it possible to validate the selection of a value of the parameter Px. Preferably, the execution of the subsequent configuration module starts automatically as soon as the parameter Px of the module Modx is validated. 
       FIG. 5  is a block diagram representing another exemplary graphical interface of a configuration module Mod 1 . The graphical interface  20  comprises two graphical presentation areas  21 A and  21 B, various selection buttons  23 ,  27 ,  28  and areas for displaying textual contents  25 A and  25 B. The two graphical presentation areas  21 A and  21 B allow a graphical comparison between two different configurations. Advantageously, each graphical presentation area  21 A,  21 B makes it possible to display a graphical assemblage comprising a background image and an overlay filter superimposed on the background image. For example, the area  21 A displays a graphical assemblage comprising a background image B 1  and an overlay filter F 1 , while the area  21 B displays another graphical assemblage comprising a background image B 2  and an overlay filter F 2 . By way of example, the image B 1  can correspond to a video recording or a simulation of a scene in three dimensions. The filter F 1  can represent a graphical simulation of a first optical power parametrization of a progressive lens. The image B 2  can correspond to a video recording or a simulation of another scene in three dimensions. The filter F 2  can represent a graphical simulation of a second optical power parametrization of another progressive lens. The area  21 A graphically presents the vision from the point of view of the wearer equipped with a first lens in the setting of the image B 1  and the area  21 B presents the vision from the point of view of the wearer equipped with a second lens in the setting of the image B 2 . The interface  20  thus makes it possible to graphically compare various configurations of corrective lenses. 
     Moreover, the buttons  23  make it possible, inside the module Mod 1 , to launch dynamic simulations. Each button  23  corresponds to a particular dynamic simulation. For example, a button  23  makes it possible to launch a dynamic simulation in the presentation area  21 A by traversing the three-dimensional image B 1  so as to simulate a modification of the direction of the wearer&#39;s gaze. Another button  23  makes it possible to launch another dynamic simulation in the presentation area  21 B by traversing the three-dimensional image B 2  so as to simulate a modification of the inclination of the wearer&#39;s head. A third button  23  makes it possible to simultaneously launch the dynamic simulation of change of gaze in the presentation area  21 A and the dynamic simulation of inclination of the head in the presentation area  21 B. Advantageously, the buttons  23  are of single-click on/off type. The area for displaying textual content  25 A, respectively  25 B, displays a short text in conjunction with the dynamic simulation represented in the area  21 A, respectively  21 B. The button  28  makes it possible to compare the vision with one and the same synchronization for the configurations of two different lenses. The button  27  makes it possible to return to the main menu or to string on the execution of the subsequent module. 
       FIG. 6  illustrates a first exemplary graphical interface of a configuration module Mod 1  for selecting a type of lens in vision mode, also called “To see” mode. The graphical interface  30  comprises two graphical presentation areas  31 A and  31 B, various selection buttons  32 ,  33 ,  37 ,  38  and areas for displaying textual contents  35 A,  35 B and  39  and validation areas  34 A,  34 B. The area  39  makes it possible for example to display the name of the wearer for whom it is desired to perform the configuration. The two graphical presentation areas  31 A and  31 B allow a graphical comparison between two different configurations. As explained in conjunction with  FIG. 5 , each graphical presentation area  31 A,  31 B makes it possible to display a graphical assemblage comprising a background image and an overlay filter superimposed on the background image. Thus, the area  31 A displays a graphical assemblage comprising a background image B 1  and an overlay filter F 1 , while the area  31 B displays another graphical assemblage comprising a background image B 2  and an overlay filter F 2 . The image B 1 , respectively B 2 , is a static, dynamic image, a video recording or else a simulation of a scene in three dimensions. In the example of  FIG. 6 , the filter F 1  represents the graphical simulation of a progressive lens according to a first optical power parametrization or else optical design. The filter F 2  represents a graphical simulation of another progressive lens according to a second optical power parametrization. The selection area  32 A makes it possible to select a product Prod 1  from among a list of various products Prod 1 , Prod 2 , Prod 3 , Prod 4 . Each product corresponds to a progressive lens having a specific optical power parametrization, which calls an associated filter F 1 . The area  21 A graphically presents the vision from the point of view of the wearer equipped with a first lens in the setting of the image B 1  having regard to the filter F 1  selected, that is to say the product Prod 1  selected. In an analogous manner, the area  21 B presents the vision from the point of view of the wearer equipped with a second lens in the setting of the image B 2  having regard to the filter F 2  selected, that is to say the product Prod 3  selected. The area for displaying textual content  35 A, respectively  35 B, displays a short text in conjunction with the selection of the product represented in the area  31 A, respectively  31 B. The interface  30  thus makes it possible to graphically compare various configurations of progressive lenses. 
     The validation area  34 A, respectively  34 B, makes it possible to select the configuration corresponding to the parametrization represented in the graphical area  31 A, respectively  31 B. Moreover, the buttons  33  make it possible, inside the module Mod 1 , to launch complementary actions in dynamic conjunction with the selection in progress. Each button  33  corresponds to a particular action such as: the calculation of the price of the lens, the dynamic display of a moving background image simulation, the dynamic display simulating a variation in brightness, etc. Advantageously, the buttons  33  are of single-click on/off type. The button  37  makes it possible to return a previous screen. The button  38  makes it possible to pass to a next screen or to string on the execution of the subsequent module. 
       FIG. 7  illustrates an exemplary graphical interface of another configuration module for selecting the tint and/or photochromy of a lens. The configuration module Mod 3  makes it possible to view a representation of the wearer furnished with the lenses and/or the frame, also called “To be seen” mode. The graphical interface  40  comprises two graphical presentation areas  41 A and  41 B, various selection buttons  42 A,  42 B,  42 C,  47 ,  48 , areas for displaying textual contents  45 A,  45 B and  49  and validation areas  44 A,  44 B. The area  49  makes it possible for example to display the name of the wearer for whom the configuration is performed. The two graphical presentation areas  41 A and  41 B allow a visual comparison between two different configurations. As explained in conjunction with  FIGS. 5 and 6 , each graphical presentation area  41 A,  41 B makes it possible to display a graphical assemblage comprising a background image and an overlay filter superimposed on the background image. Thus, the area  41 A displays a graphical assemblage comprising a background image M 1  and an overlay filter  1 A while the area  41 B displays another graphical assemblage comprising a background image M 1  and an overlay filter  1 B. In the present module Mod 3 , the image M 1 , respectively M 2  is a static, dynamic image, a photo or video recording of the face of the wearer without lens or spectacle frame. Advantageously, the images M 1  and M 2  are identical so as to allow an objective comparison of the color of the lenses on the wearer. In an advantageous manner, a photo M 1  of the wearer can be recorded by a separate module of the sequence in the course of execution or by a specific action inside a module. 
     In the example of  FIG. 7 , the filter  1 A represents the simulation of a pair of colored lenses. The selection area  42 A makes it possible to select, from among a list of various proposed lens colors (H 1 , H 2 , H 3 ), the color H 1  of the pair of colored lenses which corresponds to the displayed filter  1 A in the area  41 A. The area  41 A graphically presents a front view of the wearer equipped with a first pair of colored lenses in the setting of the image M 1  having regard to the filter  1 A selected, that is to say the color H 1  selected. In an analogous manner, the filter  1 B represents a graphical simulation of another pair of colored lenses corresponding to the color H 4  selected from the selection area  42 B from among another list of colors H 4  and H 5 . In an analogous manner, the area  41 B presents a front view of the wearer equipped with a second pair of colored lenses on the image M 2  having regard to the filter  1 B selected, that is to say the color H 4  selected. The area for displaying textual content  45 A, respectively  45 B, displays a short text in conjunction with the lens color selected and represented in the graphical area  41 A, respectively  41 B. The interface  40  thus makes it possible to graphically compare various colors of lenses such as they will appear when the lenses are worn by the wearer. The validation area  44 A, respectively  44 B, makes it possible to validate the configuration corresponding to the parametrization represented in the graphical area  41 A, respectively  41 B. Moreover, the buttons  42 C make it possible, inside the module Mod 3 , to modify the shape of the lenses. Each icon-button  42 C makes it possible by simply clicking on the corresponding simplified icon to select and to apply to the filters  1 A and/or  1 B a particular shape of lens such as: elliptical, rectangular, rounded, etc. The button  47  makes it possible to return a previous screen. The button  48  makes it possible to pass to a next screen or to string on the execution of the subsequent module. In  FIG. 7 , no spectacle frame is represented in the graphical areas  41 A and  41 B. In an alternative manner, provision may be made for the display of a filter corresponding to a standard frame or else, as complementary parameter the choice of a frame and its display in combination with the lenses selected (shape and/or color). 
     In an analogous or complementary manner, it is also possible to represent the selection of various surface treatments such as antireflection treatment. It is also possible to display various color transition parameters of a lens. 
       FIG. 8  illustrates another exemplary graphical interface  50  of a configuration module Modi making it possible to graphically view various parameters of the lens (thickness and/or weight) as a function of the type of lens selected. The configuration module Modi makes it possible to represent a view, for example a profile view, of a simulation of the lenses and of the frame. The graphical interface  50  comprises a graphical presentation area  51 , various highlighting-based selection areas  52 A,  52 B and areas for displaying textual contents  55 A and  55 B. 
     The graphical presentation area  51  makes it possible to represent a spectacle frame  2 , equipped with a lens for the left eye and with another lens for the right eye. More precisely, the graphical presentation area  51  makes it possible to display a graphical assemblage comprising a background image (neutral background in the example illustrated in  FIG. 8 ), a first overlay filter corresponding to the right lens, a second overlay filter corresponding to the left lens and preferably a third overlay filter corresponding to a frame. The overlay filters are displayed superimposed on the background image. The third overlay filter can correspond to a graphical representation of a standard frame, to a graphical representation of a preselected frame, or else to a photograph of such a frame. The selection area  52 A makes it possible to select a particular lens for the left eye from among a first list of various proposed products (Prod 1 , Prod 2 , Prod 3 , Prod 4 , Prod 5 ). In an analogous manner, the selection area  52 B makes it possible to select a particular lens for the right eye from among a second list of various proposed products (Prod 1 , Prod 2 , Prod 3 , Prod 4 , Prod 5 ) which may be identical or different from the first list. For example, the products Prod 1 , Prod 2 , Prod 3 , Prod 4 , Prod 5  may correspond to various lenses proposed in the catalog of a supplier or else to various materials usable to fashion an ophthalmic lens. The area  51  graphically presents a profile view of the frame  2 , of a lens for the left eye  1 A corresponding to the product Prod 5  selected from the selection area  52 A highlighted and of a lens for the right eye  1 B corresponding to the product Prod 3  selected from the selection area  52 B highlighted. 
     The area for displaying textual content  55 A, respectively  55 B, displays a short text in conjunction with the product selected and represented on the lens for the left eye  1 A and respectively on the lens for the right eye  1 B. The graphical presentation area  51  makes it possible simultaneously to represent the profile of a lens for the left eye  1 A which would be manufactured from a first material corresponding to the selection Prod 5  and to represent the profile of a lens for the right eye  1 B which would be manufactured from a second material corresponding to the selection Prod 3 . Advantageously, the area  51  makes it possible to display at  55 A alongside the lens for the left eye  1 A information about the weight of the lens Prod 5  selected and at  55 B, alongside the lens for the left eye  1 B, information about the weight of the lens Prod 3  selected. The interface  50  thus makes it possible to graphically compare geometric aspects of various lenses as a function of the chosen material. In a complementary manner, the module Modi makes it possible to view other views of the lenses  1 A,  1 B and/or of the frame. Advantageously, the simulation of the profile of the lenses  1 A and  1 B takes into account the parametrization of the optical correction prescription. The execution of the module Modi for viewing the profile of the spectacle lenses advantageously takes into account the parameters validated during the execution of the previous modules of the same sequence. 
     The interface of the module Modi of  FIG. 8  can be used as follows to choose one profile rather than another: 
     1) The choice can be steered by the optician or as a function of the client&#39;s sensitivity; 
     2a) the wearer&#39;s life choice: environment of use (mountain/others, FV/NV use predominance), indoor/outdoor, activities, age, gender, previous equipment type, variation in setting (passage from dark to light or vice versa), etc. 
     2b) type of frames sought: size/face form/rimmed/grooved/rimless. 
     2c) prescription 
     Modules other than those detailed in conjunction with  FIGS. 1 to 8  are of course conceivable. 
     The execution the chosen sequence of configuration modules enables the future wearer to follow a personalization route, in the course of which the choices made in each module (that is to say the values of the selected and validated parameters) are recorded in a database or a central file. Advantageously, the final results of the sequence are presented in the form of a maximum of three configurations to be chosen. The three configurations are presented as a function of the costs and/or of technical or esthetic arguments. This thus leads to the determination of a technically achievable optimal configuration of lenses for the wearer which takes account of commercial aspects, such as promotions on certain configuration parameters (promotions on colored lenses for example). 
     In a more general manner, software is proposed in which the optician can configure various sales routes. 
     The procedure makes it possible:
         to standardize the prepared speeches of the sales forces via the sharing of the common methods;   to adapt the choices and the methods of sale: sharing of common methods;   to adapt the choices and the methods of sale of the optician as a function of the client;   to systematically update the values of the configuration parameters via a platform updated by computer network (Internet or other);   to upgrade certain contents without influencing the container, thereby limiting the redevelopment of marketing tools (images, videos and montages), adaptations as a function of commercial campaigns.