Method and system for determining fitting parameters for fitting physical spectacle frame and method and system for producing fitting output spectacle frame for spectacle wearer

Abstract

The invention relates to a method for determining fitting parameters for fitting a solid model spectacle frame for a spectacle wearer, the method comprising: providing a solid model spectacle frame, the solid model spectacle frame having a first shape; generating an adapted physical model spectacle frame by adapting the physical model spectacle frame to the spectacle wearer, wherein the adapted physical model spectacle frame has a second shape different from the first shape; and determining an adaptation parameter that adapts to the solid model spectacle frame, wherein the adaptation parameter defines at least one spatial difference between the first shape and the second shape. The invention also relates to a system for determining fitting parameters for fitting a solid model spectacle frame for a spectacle wearer, and to a method and system for producing a fitting output spectacle frame for a spectacle wearer.

Description

Technical Field

[0001] The present invention relates to a method for determining fitting parameters for a physical eyeglass frame, a method for producing a fitting output eyeglass frame for an eyeglass wearer, a system for determining fitting parameters for a physical eyeglass frame, and a system for producing a fitting output eyeglass frame for an eyeglass wearer.

[0002] This invention relates particularly to the field of eyeglasses manufacturing, especially custom eyeglasses manufacturing, and also to the field of eyeglasses frame technology. Background Technology

[0003] As part of the production of custom eyeglasses for a client, an initial visit to an optometrist is usually required. During this process, the client selects frames specifically for the new custom eyeglasses, and the optometrist will personalize the chosen frames to ensure an optimal fit based on the client's individual needs. Based on the fitted frames, the optometrist can determine the client's Zenrierdate, which can be taken into account when producing the eyeglass lenses.

[0004] To produce custom-made eyeglasses, new frames are typically used, and corresponding lenses are installed into the frames. When delivering the custom-made eyeglasses, the customer needs to visit the optometrist again. During this time, not only are the custom-made eyeglasses delivered to the customer, but they must also be refitted according to the customer's needs to ensure the best fit.

[0005] Within the scope of this invention, it is recognized for the first time that such a process, particularly based on the first and second fittings, can negatively impact the corrective effect of the eyeglasses. This may be particularly due to differences between the first and second fittings, resulting in variations in parameters between the eyeglasses or frames selected and fitted during the first fitting and the lenses or frames delivered and refitted during the second fitting. Therefore, eyeglass lenses, for example, produced based on centering data determined during the first fitting, may have misalignment in the delivered eyeglasses, which reduces the corrective effect of the eyeglasses.

[0006] Furthermore, within the scope of this invention, it is recognized that the aforementioned conventional process is very labor-intensive, as it requires two visits to the optometrist and two personalized fittings. It is also recognized that for each subsequent pair of glasses or each subsequent order of glasses from the customer, at least another visit to the optometrist and another personalized fitting is required. Summary of the Invention

[0007] Therefore, the object of the present invention is to provide an improved method for producing eyeglass frames and / or eyeglasses.

[0008] This objective is achieved through the independent claims, while the preferred embodiments are the subject of the dependent claims.

[0009] Methods for determining adaptation parameters

[0010] One aspect relates to a method for determining fitting parameters for an eyeglass wearer to fit a physical model eyeglass frame. The method includes providing a physical model eyeglass frame. The physical model eyeglass frame can be any model eyeglass frame, which can preferably be selected by the eyeglass wearer from a plurality of available physical model eyeglass frames. For example, the plurality of available physical model eyeglass frames can be various styles of model eyeglass frames offered by an optometrist or optician.

[0011] The solid model eyeglass frame may specifically include two first model eyeglass lenses, wherein these two first model eyeglass lenses are designed to be inserted into the solid model eyeglass frame. Preferably, the two first model eyeglass lenses are inserted into the solid model eyeglass frame.

[0012] The eyeglass frames described herein, such as solid model eyeglass frames and / or adaptable model eyeglass frames described below, are not limited to a particular type of eyeglass frame. For example, one or more eyeglass frames described herein may be designed as full-rim frames, semi-rim frames, and / or rimless frames. Alternatively or additionally, one or more eyeglass frames described herein may be designed, for example, as frames made of natural organic materials such as wood (see, for example, DIN EN ISO 7998:2005, Section 2.2), plastic frames (see, for example, DIN EN ISO 7998:2005, Section 2.1), metal frames (see, for example, DIN EN ISO 7998:2005, Section 2.3), and / or combination frames (see, for example, DIN EN ISO 7998:2005, Section 2.4), but eyeglass frames are not limited to these exemplary materials. Furthermore, one or more eyeglass frames described herein may be designed, for example, as eyeglass frames with rigid straight temples (e.g., sports frames), or frames with fine metal wire. Furthermore, one or more eyeglass frames described herein may be designed, for example, with or without temples. Examples of possible templeless eyeglass frames include pincushion glasses and / or optical swimming goggles.

[0013] Furthermore, the eyeglass frames described herein can be designed as frames for eyeglasses, wherein the eyeglasses preferably at least partially correct at least one refractive error of the eyeglass wearer. For example, the eyeglasses can be progressive lenses or eyeglasses with progressive lenses. However, the eyeglass frames and / or eyeglasses described herein are not limited to this. For example, the eyeglass frames described herein can also be designed as frames for other eyeglasses (especially other eyeglasses that also have or can have optical corrective effects), such as safety goggles and / or sunglasses and / or swimming goggles.

[0014] The physical model eyeglass frame may specifically include at least one adaptable element, wherein the at least one adaptable element is designed to adapt to the head structure of the eyeglass wearer. The at least one adaptable element may also be designed such that adjustment of the at least one adaptable element affects (or alters) the positioning of the physical model eyeglass frame, or affects (or alters) the positioning of a first model spectacle lens inserted into or insertable into the physical model eyeglass frame relative to the eyeglass wearer or the eye of the eyeglass wearer (particularly in the personal use position). In particular, this positioning can affect the optical corrective effect of the eyeglass frame or spectacle, meaning that this optical corrective effect can be effectively considered and / or adjusted during the fitting of the physical model eyeglass frame.

[0015] The solid model eyeglass frame has a first shape. This first shape can specifically be the physical three-dimensional shape of the solid model eyeglass frame. In particular, the first shape can substantially correspond to the outer surface of the solid model eyeglass frame.

[0016] Specifically, the physical model eyeglass frame may include movable elements, wherein the temples of the physical model eyeglass frame may be designed to be foldable, for example, via hinges. Specifically, the first shape may be the physical three-dimensional shape of the physical model eyeglass frame in a first alignment state. The first alignment state may specifically define the alignment of one or more movable elements of the physical model eyeglass frame. In this regard, the first alignment state may, for example, define the temples of the physical model eyeglass frame in an extended state. For example, the first alignment state may define the alignment of one or more movable elements of the physical model eyeglass frame according to the individual's usage position. On the one hand, this allows for particularly simple determination of fitting parameters. On the other hand, this first alignment state based on the individual's usage position allows for particularly efficient and accurate determination of fitting parameters, and can improve the matching accuracy of the corresponding fitted output eyeglass frame.

[0017] The method also includes generating an adapted physical model eyeglass frame by adapting a physical model eyeglass frame (preferably physically) to an eyeglass wearer, preferably to an eyeglass wearer in a personal use position. In the context of this disclosure, a personal use position can be specifically understood as the personal arrangement of the adapted physical model eyeglass frame when it is intended to be worn on the eyeglass wearer's head. In this regard, the term "intentionally worn" can be specifically understood as wearing an eyeglass frame on the eyeglass wearer's head, such as wearing an adapted physical model eyeglass frame, wherein the spectacle lenses inserted into the frame can perform at least one function related to the eyeglass wearer's eyes. Specifically, this at least one function can be a corrective function for at least one refractive error of the eyeglass wearer's eyes and / or a protective function for the eyeglass wearer's eyes (e.g., protection against excessive incident light), but is not limited thereto.

[0018] Adapting a physical model eyeglass frame can specifically include physically adjusting or modifying the frame according to the individual facial and / or head shape of the eyeglass wearer. For example, adapting a physical model eyeglass frame may include, but is not limited to, deforming and / or bending and / or lengthening and / or shortening at least one element (e.g., temple) of the frame. In particular, at least one possible adaptation step can be pre-determined for each of a plurality of available physical model eyeglass frames. By pre-determining possible adaptation steps in this way, the adaptation process for a particular physical model eyeglass frame can be simplified, and the adaptation parameters for a particular adapted physical model eyeglass frame can be determined particularly efficiently. For example, the at least one possible adaptation step may include possible deformation and / or possible bending and / or possible lengthening and / or possible shortening of at least one element of the physical model eyeglass frame. For example, adapting a physical model eyeglass frame may include selecting one or more possible adaptation steps and performing one or more of the selected possible adaptation steps.

[0019] Specifically, the adaptation of the physical model eyeglass frame can be designed to personalize the frame for the wearer, ensuring an optimal or best fit when the wearer wears the adapted frame, particularly when worn as intended. Specifically, the generation of the adapted physical model eyeglass frame can be done manually, preferably by a professional (e.g., an optometrist).

[0020] Specifically, the physical model eyeglass frame can be designed to be easily adjustable. For example, the physical model eyeglass frame may include one or more adapter elements. These adapter elements may be designed to transition from an initial state to a final state when the physical model eyeglass frame is fitted to a wearer, so that the physical model eyeglass frame fits the wearer. For example, the one or more adapter elements may include length-adjustable elements (e.g., length-adjustable temple elements), the length of which can be set or defined when the physical model eyeglass frame is fitted. For example, the one or more adapter elements may include lockable hinge elements (e.g., lockable temple end hinge elements), the alignment method or alignment angle of which can be set or defined when the physical model eyeglass frame is fitted.

[0021] Specifically, at least one (preferably each) adapter element and / or solid model eyeglass frame may have a measuring scale. A specific measuring scale may be mounted on the adapter element and / or solid model eyeglass frame, or integrally formed therewith. For example, a specific measuring scale may be printed on the corresponding adapter element and / or solid model eyeglass frame. Specifically, the measuring scale may be designed such that a specific initial and / or final state of the adapter element can be read or quantified on the measuring scale, preferably by means of a measuring device (e.g., a first measuring device, see below) and / or manually. Specifically, determining the adapter parameter may include determining at least one adapter parameter based on the read or quantized initial and / or final state.

[0022] For example, one or more adapter elements may include at least one length-adjustable temple element as described above. The length-adjustable temple element may have a length-measuring scale. In this case, the initial state of the length-adjustable temple element (e.g., the temple length to the bend of a solid model eyeglass frame) can be read or quantified on the length-measuring scale. Alternatively or additionally, the final state of the length-adjustable temple element (e.g., the temple length to the bend of an adapted solid model eyeglass frame) can be read or quantified on the length-measuring scale. For example, at least one adapter parameter (e.g., the temple length to the bend) can be determined based on the read or quantified initial state and / or final state.

[0023] Alternatively or additionally, the solid model eyeglass frame can be made of a deformable material. In this case, the solid model eyeglass frame may include at least one deformable portion made of a deformable material. The deformable material may be designed to undergo plastic deformation by manual and / or mechanical action (e.g., bending by a professional). In particular, the solid model eyeglass frame may be made of a different material than the adapter output eyeglass frame (see below). In particular, the stiffness of the deformable material may be lower than the stiffness of the material of the adapter output eyeglass frame.

[0024] In particular, this allows for the advantageous and easy definition of fitting parameters even for eyeglass frames made of, for example, materials that are difficult to deform (e.g., wood and / or carbon fiber). Especially for frames made of such materials, a second fitting requires considerable effort (e.g., high-temperature heating) during the conventional process of returning to the optometrist. However, in the method according to the invention, fitting parameters can be considered, for example, during the production of the eyeglass frames from the difficult-to-deform materials.

[0025] By adapting a physical model of an eyeglass frame to a wearer, a highly precise fit can be achieved for each individual. Furthermore, professional intervention can further enhance accuracy. Additionally, the adaptation process allows for direct feedback from the wearer, resulting in exceptionally personalized wearing experiences.

[0026] The adaptable solid model eyeglass frame has a second shape. This second shape can specifically be the physical three-dimensional shape of the adaptable solid model eyeglass frame. In particular, the second shape can substantially correspond to the outer surface of the adaptable solid model eyeglass frame.

[0027] Specifically, the adaptable physical model eyeglass frame may include movable elements, such as the temples of the adaptable physical model eyeglass frame, which are designed to be foldable via hinges. Specifically, the second shape may be the physical three-dimensional shape of the adaptable physical model eyeglass frame in a second alignment state. The second alignment state may specifically define the alignment method of one or more movable elements of the adaptable physical model eyeglass frame.

[0028] In this regard, the second alignment state can, for example, define the temples of the adapted physical model eyeglass frame as being in a folded state. For instance, the second alignment state can define the alignment of one or more movable elements of the adapted physical model eyeglass frame based on the individual's usage position. On the one hand, this allows for particularly simple determination of the adaptation parameters. On the other hand, this second alignment state based on the individual's usage position allows for particularly efficient and accurate determination of the adaptation parameters, and can improve the matching accuracy of the corresponding adapted output eyeglass frame.

[0029] The first alignment state and the second alignment state can preferably be substantially the same. This in particular allows for a simplified comparison between the first shape and the second shape.

[0030] The second shape differs from the first shape. In other words, the adaptation of a solid model eyeglass frame can be designed to change the first shape of the solid model eyeglass frame to generate an adapted solid model eyeglass frame.

[0031] The method also includes determining fitting parameters for the fitted physical model eyeglass frame. Specifically, the fitting parameters are preferably determined using a first measuring device. However, the method is not limited to using only the first measuring device. Instead, one or more measuring devices can be used to determine the fitting parameters. The fitting parameters may include a single fitting parameter or multiple fitting parameters. Preferably, the fitting parameters can be determined as a digital dataset. Furthermore, the digital dataset may include at least the identification of the physical model eyeglass frame and / or the identification of a first shape. The determination of the fitting parameters can be (e.g., via the first measuring device) at least partially automated and / or at least partially manual, for example, by a professional (e.g., via the first measuring device).

[0032] For example, the determined adaptation parameters are transmitted or can be transmitted to a system for determining adaptation parameters for an adapted physical model eyeglass frame for an eyeglass wearer, and / or to a system for producing adapted output eyeglass frames for an eyeglass wearer.

[0033] The adaptation parameters define at least one spatial difference between the first shape and the second shape, preferably defining at least each or all of the spatial differences between the first shape and the second shape. In particular, the adaptation parameters may be adapted to define the positioning of the spectacle lens into which the adaptable model eyeglass frame can be inserted relative to a reference system of the eyeglass wearer's head during (preferably as intended) wearing or using the adaptable physical model eyeglass frame, preferably defined at the personal use position of the adaptable physical model eyeglass frame.

[0034] The method described (particularly the determination of fitting parameters) makes it particularly easy and efficient to determine how a physical model eyeglass frame fits the wearer, where these fitting parameters can be considered, for example, during the production of custom-made eyeglasses. This eliminates the need for a second visit to the optometrist, and especially avoids a second fitting upon delivery of the custom-made eyeglasses, while still achieving a good personalized wearing experience.

[0035] Furthermore, the method described herein significantly improves the accuracy and personalization of eyeglasses or frames for the wearer. For example, it eliminates the need to measure the wearer's head and / or face, or create a 3D model. The wearer's head and / or face, being highly complex objects, can often lead to errors or measurement omissions during measurement, such as due to shadows cast by ears or hair. In the method described herein, fitting parameters can be determined after fitting the wearer, especially in the absence of a wearer or their head. This also allows for shorter and more efficient initial visits to the optometrist for the wearer.

[0036] Furthermore, considering adaptation parameters, any number of custom-made eyeglasses can be ordered, manufactured, and delivered to eyeglass wearers, each pair optimally fitting the wearer without the need for further fitting by an optometrist. Specifically, this ensures that the fit of a fitted physical model frame to the wearer is substantially the same as that of any fitted output frame manufactured considering adaptation parameters, thus maintaining essentially identical personalized parameters for a particular frame. This also ensures that the parameters considered when calculating lens placement for the wearer (e.g., centering data) correspond to the actual wearing condition or fit, achieving optimal correction. This is particularly advantageous for eyeglasses where precise positioning is crucial or important (e.g., glasses with progressive lenses). Therefore, the method described herein allows for the subsequent ordering of additional frames or eyeglasses to the wearer, for example, entirely online, without requiring additional travel or fitting for the wearer.

[0037] Furthermore, the method used to determine the fitting parameters can improve the efficiency and security of the method, preferably enhancing its data security. According to the method used to determine the fitting parameters, it is unnecessary to determine the biometric data of the wearer's face or head. Furthermore, it is not necessary to create a model (e.g., a 3D model) of the wearer's face and / or head. On the one hand, the method is thus significantly simpler and requires less computation, measurement, and / or data storage. On the other hand, since it is not necessary to determine the biometrics and / or personal data of the wearer's face and / or head, unauthorized access to this data can be prevented.

[0038] Furthermore, the adaptation parameters can preferably define at least one spatial consistency between the first shape and the second shape, and preferably define at least each or all of the spatial consistency between the first shape and the second shape. In particular, this allows the adaptation parameters to completely define the second shape relative to the first shape.

[0039] For example, the first shape can be designated as a first shape dataset, preferably a first digital shape dataset. The first shape dataset can be designed to be readable, particularly readable by a processor and / or computing device. Preferably, the first shape dataset can be stored in at least one database. By designating the first shape dataset in this way, the method can become particularly efficient because the first shape dataset can be created without further measurements. Furthermore, this allows for the efficient and rapid consideration of shape datasets for other model eyeglass frames, which can be stored, for example, in at least one database.

[0040] Alternatively, the first shape can be defined as a first shape dataset, preferably a first digital shape dataset. The first shape can be defined as a first shape dataset before generating the adapted physical model eyeglass frame. Furthermore, the defined first shape dataset can be stored in at least one database. Determining the first shape dataset in this way allows for a particularly precise method because it does not rely on a specified shape dataset that may differ from the first shape. Moreover, this method can also be performed if the first shape is not specified or is unknown.

[0041] Furthermore, the first shape dataset can be determined by the first measuring device. This can further improve the accuracy and efficiency of the method. For example, in the case of relative measurements, calibration errors of the first measuring device that may occur during both the determination of the first shape dataset and the determination of the second shape dataset can be effectively taken into account and eliminated.

[0042] The method may preferably include determining a second shape as a second shape dataset, preferably as a second digital shape dataset. Specifically, at least the adaptation parameters and / or the second shape dataset are input into or can be input into an ordering system. The ordering system may specifically include means for producing eyeglass frames (particularly adapted output eyeglass frames). For example, the ordering system may include a system for producing adapted output eyeglass frames as described herein. The second shape dataset may be designed to be readable, particularly readable by a processor and / or computing device. Specifically, the format of the second shape dataset may substantially correspond to the format of the first shape dataset. Alternatively, the format of the second shape dataset may partially correspond to the format of the first shape dataset, or correspond to a subset of the format of the first shape dataset. For example, this allows for particularly efficient comparisons between the first and second shape datasets. Specifically, the second shape dataset may be stored in at least one database. Determining the second shape as a second shape dataset can be performed after generating the adapted solid model eyeglass frame.

[0043] Preferably, the fitting parameters can be determined based on a comparison between a first shape dataset and a second shape dataset. Specifically, the first and second shape datasets can have substantially the same format, thereby simplifying the comparison process. In particular, the method can include comparing the first and second shape datasets to determine at least one spatial difference between the first shape and the second morphology.

[0044] Specifically, at least one fitting parameter to be determined can be pre-determined for the physical model eyeglass frame, preferably at least one fitting parameter to be determined for each of a plurality of available physical model eyeglass frames. In this case, determining the fitting parameter may specifically include determining each pre-determined fitting parameter for the physical model eyeglass frame or a specific physical model eyeglass frame. By pre-determining the fitting parameters to be determined in this way, the fitting process for a specific physical model eyeglass frame can be simplified, and the fitting parameters for a specific fitting physical model eyeglass frame can be determined particularly efficiently.

[0045] Specifically, each predetermined possible fitting step of the physical model eyeglass frame may be assigned at least one fitting parameter to be determined, and vice versa. For example, for an exemplary physical model eyeglass frame, adjusting the temple length may be predetermined as a possible fitting step, wherein the exemplary possible fitting step may be assigned the temple length up to the bend as a fitting parameter to be determined.

[0046] Specifically, the adaptation parameters may include at least one or more of the following parameters: - The length of the temple to the bend, for example, measured in millimeters (see DIN EN ISO 8624:2020-11, section 3.2.7); - The length of the temple ends, for example, measured in millimeters (see DIN EN ISO 8624:2020-11, section 3.2.8); - Total temple length, for example, the total length of adjustable temples, measured in millimeters (see DIN EN ISO 8624:2020-11, section 3.1.7); - The angle between the temple and the end of the temple at the bend, particularly the angle between the axis of the temple end and the axis of the rest of the temple, measured in degrees (e.g., see DIN EN ISO 8624:2020-11). Figure 2 (The angle between the length of the temple to the curved part and the length of the temple end); - The shape of the temple ends used to fit the ear of the eyeglass wearer, for example, represented by a parametric curve; - The curvature of the left and / or right temples in the horizontal direction to fit the wearer's head, for example, expressed as a radius of curvature and / or a parametric curve; - The angle of opening between the middle part of the eyeglasses and the left and / or right temple, measured in degrees, for example (see, for example, DIN EN ISO 8624:2020-11). Figure 3 ); - Inclination winkel, for example, measured in degrees (see DIN EN ISO 8624:2020-11, section 3.2.14); - Frame tilt angle (Fassungsscheibenwinkel), for example, measured in degrees (see DIN ENISO 8624:2020-11, section 3.2.13); - The bridge angle between the two nose pads of the eyeglasses frame, measured in degrees, for example. - Nose bridge height, for example, measured in millimeters (see, for example, DIN EN ISO 8624:2020-11, section 3.2.6); - Nasal bridge width, for example, measured in millimeters (see DIN EN ISO 8624:2020-11, section 3.2.5); - Nose bridge model, for example, selected from different nose bridge variations of eyeglass frames, for example, indicated by model number; - The fit of the bridge of the nose, for example, represented by a parametric curve; - Lens shape, for example, represented by a parametric curve (see DIN EN ISO 8624:2020-11, Section 3.2.10); - Lens dimensions for rimless glasses or eyeglass frames, for example, represented by parametric curves; - The location of at least one drilled hole in the rimless glasses or eyeglass frame, for example, measured as a relative distance (in millimeters) relative to a reference location; - The distance between eyeglass lenses, measured in millimeters (see DIN EN ISO 8624:2020-11, section 3.1.6); - For eyeglass frames without temples, the distance between the lenses and / or the length of the bridge between the lenses, especially the length of a flexible bridge, are measured, for example, in millimeters.

[0047] For example, the tilt angle and / or forward tilt angle of an eyeglass frame (e.g., a fitted model frame) can affect the positioning of a particular frame relative to the wearer's eyes in a personal use position, thus directly affecting the optical quality of the optical correction achieved by the eyeglasses. Furthermore, the distance between eyeglass lenses can affect the interpupillary distance required for the optical correction effect of the eyeglasses, thus also affecting optical quality. For example, the shape of the temple tips can affect the ergonomic wearing behavior of a particular eyeglass frame in a personal use position, thus directly affecting the wearer's ergonomic needs. Therefore, by determining and / or considering fitting parameters, the quality of the optical correction effect of eyeglass frames or eyeglasses, as well as the fit of the frames or lenses, can be effectively improved.

[0048] However, the adaptation parameters are not limited to the examples above and may therefore include more, fewer, and / or other parameters. Examples of other possible parameters can be found in standards DIN EN ISO 8624:2020-11, DIN EN ISO 13666:2019, DIN EN ISO 12870:2018-07, and / or DIN EN ISO 7998:2005.

[0049] If necessary, adaptation parameters can be determined separately for the left and / or right sides of the adapted physical model eyeglass frame. For example, the temple length to the bend can be determined for the left or left temple and / or the right or right temple of the adapted physical model eyeglass frame.

[0050] Preferably, the adaptation parameters may include at least one absolute adaptation parameter, the value of which is determined by absolute measurement of the second shape or the adaptable physical model eyeglass frame. The term "absolute measurement" can be specifically understood as a measurement of the total value of physical quantities, particularly the total value of physical quantities of the eyeglass frame, such as the total temple length and / or angle of the adaptable physical model eyeglass frame. In particular, this absolute adaptation parameter allows the second shape to be defined without any information about the first shape. Furthermore, this absolute adaptation parameter can be used to define at least one spatial difference between the second shape and the first shape, for example, by comparison with the first shape. Moreover, considering the adaptation parameters, this absolute adaptation parameter can simplify subsequent production of the eyeglass frame.

[0051] Preferably, the fitting parameter may include at least one relative fitting parameter, the value of which is determined based on a relative measurement of the first shape and the second shape. For example, the term "relative measurement" can be understood as a comparative measurement (e.g., a difference measurement) of a specified or measured value of the first shape with a measured value of the second shape. For example, the relative fitting parameter may be a specific length value (e.g., 0.5 cm) for shortening or lengthening the temple length to the bend, which is determined based on the difference between the measured or specified temple length to the bend of the first shape and the measured temple length to the bend of the second shape. With such a relative fitting parameter, at least one spatial difference between the first shape and the second shape can be quantified particularly easily, wherein, taking the fitting parameter into account, the relative fitting parameter can preferably be specified as a direct work instruction, for example, in subsequent eyeglass frame production. Furthermore, such a relative fitting parameter can reduce the number of fitting parameters, wherein, for example, relative fitting parameters with a value of "0" are filtered out and / or deleted and / or discarded. Furthermore, the use of relative adaptation parameters allows for easy transfer of adaptation parameters between eyeglass frames, for example, between adapting a solid model eyeglass frame and outputting an eyeglass frame blank, which may differ slightly in shape or geometry (e.g., in such different eyeglass frames, for the same head shape or the same eyeglass wearer, the temple length to the bend may differ, for example, due to different temple thicknesses and / or the tilt angle of the frame).

[0052] In particular, if the first shape is known, at least one absolute fit parameter can be designed to be convertible to a relative fit parameter, and vice versa.

[0053] Preferably, the adaptation parameters may include at least one complex adaptation parameter. For example, a complex adaptation parameter may specifically include a geometry and / or a parametric curve. Exemplary complex adaptation parameters may specifically be the shape of the temple and / or the shape of the temple tip.

[0054] Preferably, the adaptation parameters may include at least one absolute adaptation parameter and / or at least one relative adaptation parameter and / or at least one complex adaptation parameter.

[0055] Specifically, for each adaptation parameter, it can be specified whether the corresponding adaptation parameter is determined or can be determined as an absolute adaptation parameter and / or a relative adaptation parameter and / or a complex adaptation parameter. Furthermore, for each adaptation parameter, it can be specified under what conditions the corresponding adaptation parameter is determined or can be determined as an absolute adaptation parameter and / or a relative adaptation parameter and / or a complex adaptation parameter. For example, these conditions may include, but are not limited to, applicable measurement methods and / or available measuring devices and / or knowledge of the first shape and / or knowledge of the physical model eyeglass frame. Therefore, it can be specified, for example, for one or more adaptation parameters, that if the first shape and / or the physical model eyeglass frame is unknown, these adaptation parameters can be determined as absolute adaptation parameters. For example, for the adaptation parameter "frame tilt angle," it can be specified that it can be determined as an absolute adaptation parameter by a video centering device and / or an image recognition unit, where knowledge of the physical model eyeglass frame and / or the first shape is not required. Furthermore, if the physical model eyeglass frame and / or at least one adapter element includes at least one measuring scale, at least one corresponding adapter parameter can be determined as a relative adapter parameter by at least one measuring scale.

[0056] Furthermore, the adaptation parameters may include at least the identification of the physical model eyeglass frame and / or the identification of the first shape. In particular, such identification facilitates reference to the physical model eyeglass frame and / or the first shape, for example, if the corresponding first shape dataset is stored in at least one database. Moreover, this advantageously eliminates the need to send or ship the adapted physical model eyeglass frame to, for example, the corresponding eyeglass frame manufacturer.

[0057] Specifically, the adaptation of the physical model eyeglasses frame to the eyeglass wearer can be performed at at least one fitting point on the physical model eyeglasses frame. Specifically, the at least one fitting point may include or at least a predetermined set of fitting points. Specifically, the at least one fitting point may be at least one point or area of ​​the physical model eyeglasses frame, in which the physical model eyeglasses frame is adapted to the eyeglass wearer, for example, by deformation.

[0058] Specifically, determining the adaptation parameters may include determining the adaptation parameters at at least one adaptation point. For example, at least one adaptation parameter may be determined at each adaptation point. In this process, a first adaptation parameter may be determined at a first adaptation point, for example, by taking an image of the first adaptation point, and this process is independent of the process of determining a second adaptation parameter at a second adaptation point, for example, by taking an image of the second adaptation point. In particular, this allows for local determination of the adaptation parameters. For example, at least one adaptation parameter may thus be determined based on an image of the end of a temple, without having to take an image of the entire temple. Alternatively or supplementarily, determining two or more adaptation parameters at two or more adaptation points may include taking images of two or more adaptation points.

[0059] For example, at least one fitting point may include the end point and / or end portion of the temple of the solid model eyeglass frame. The end point of the temple may be, in particular, the point along the temple furthest from the spectacle lens or from the insertion portion of the solid model eyeglass frame through which the spectacle lens can be inserted into the solid model eyeglass frame. The end portion of the temple may be a portion extending along the temple from the end point, extending at most to about 50% of the temple length, preferably at most about 40% of the temple length, and more preferably at most about 30% of the temple length.

[0060] In particular, this adaptation of the physical model eyeglass frame at at least one fitting point simplifies the fitting process and the determination of the corresponding fitting parameters.

[0061] Specifically, the first measuring device may include at least one camera for capturing one or more images, particularly a series of images, of the adapted physical model eyeglass frame. Specifically, the at least one camera may be designed to capture at least one 2D image of the adapted physical model eyeglass frame. Alternatively or additionally, the at least one camera may be designed to capture at least one 3D image of the adapted physical model eyeglass frame, for example, by time-of-flight (TOF) imaging and / or structured light imaging. Furthermore, the first measuring device may be designed to determine adaptation parameters from the one or more images via image recognition. Specifically, the first measuring device may include an image recognition unit, wherein the image recognition unit is designed to determine adaptation parameters from the one or more images via image recognition. Alternatively or additionally, the first measuring device may be designed to transmit one or more images to an external image recognition unit to determine adaptation parameters from the one or more images via image recognition. In particular, the at least one camera may be designed as a video centering device, such as the Rodenstock ImpressionIST®. For example, the at least one camera may be designed to read or quantize a specific initial and / or final state of at least one adapter element on a specific measuring scale.

[0062] In particular, this makes it possible to determine the optical parameters in a particularly simple way. Furthermore, conventional camera systems (such as those built into mobile phones or laptops) can also be used to determine the adaptation parameters. Therefore, this also allows the use of existing camera systems without the need for additional measuring equipment.

[0063] Specifically, the first measuring device may include at least one 3D scanning unit, wherein the 3D scanning unit is designed to determine fitting parameters. Specifically, the at least one 3D scanning unit may be designed to determine fitting parameters by optically scanning a physical model eyeglass frame. Specifically, the 3D scanning unit may be designed to generate a digital 3D model of the physical model eyeglass frame, wherein the first measuring device is designed to determine fitting parameters based on the 3D model. For example, the 3D scanning unit may be designed as a LiDAR unit.

[0064] In particular, this allows for the precise determination of fitting parameters. Furthermore, the fitting parameters and a 3D model of the determined fitting physical eyeglass frame can be provided, thus simplifying quality control work, such as for custom-made eyeglasses.

[0065] Specifically, the first measuring device may include at least one tactile detection unit, wherein the at least one touch detection unit is designed to determine adaptation parameters.

[0066] At least one tactile detection unit may specifically include a template element. This template element may be designed to be placed on top of, for example, a fitted physical model eyeglass frame to determine at least one fitting parameter by comparing the template element with the correspondingly placed fitted physical model eyeglass frame. In particular, the template element may be designed to be placed on top of, for example, the fitted physical model eyeglass frame manually by a user and / or automatically by the tactile detection unit. For example, the template element may be designed and / or include a frame tilt angle template element, wherein the frame tilt angle template element is designed to determine the frame tilt angle. However, at least one tactile detection unit or template element is not limited to this frame tilt angle template element, but may include other and / or multiple template elements. For example, alternatively or additionally, at least one template element may be and / or include a tilt angle template element.

[0067] At least one tactile detection unit may specifically include a caliper element, such as an automatic caliper. The tactile detection unit may be designed to automatically determine at least one fitting parameter (e.g., nose bridge width) via the caliper element. For example, the caliper element may be at least partially manually operated and / or at least partially automated.

[0068] Specifically, the first measuring device may be designed to output determined fitting parameters to the user, for example, by displaying these fitting parameters on a screen, and / or to capture the determined fitting parameters in digital form and transmit them to, for example, a production device to produce a fitted eyeglass frame.

[0069] Methods for producing compatible eyeglass frames for eyeglass wearers

[0070] One aspect relates to a method for producing an adapter-output eyeglass frame for an eyeglass wearer. Here, an adapter-output eyeglass frame can be understood as an eyeglass frame delivered to an eyeglass wearer for intended use. In this case, the adapter-output eyeglass frame may be specifically designed to have or not have suitable spectacle lenses.

[0071] The method for producing an adapter output eyeglass frame specifically includes determining the adaptation parameters of an adapter physical model eyeglass frame according to the method described herein for determining adaptation parameters for an eyeglass wearer. In particular, the method for producing an adapter output eyeglass frame can have any combination of the features of the method described herein for determining adaptation parameters.

[0072] The method for producing an adapter output eyeglass frame further includes producing the adapter output eyeglass frame, taking into account determined adapter parameters, such that the adapter output eyeglass frame substantially has a second shape. Unless otherwise defined in specific circumstances, the term "substantially" within the scope of this disclosure is specifically understood to include all conventional, production- and / or environmentally related deviations. Such conventional, production- and / or environmentally related deviations may specifically include a relative deviation of up to about 20%, preferably up to about 10%, more preferably up to about 5%. Furthermore, conventional, production- and / or environmentally related deviations may include absolute deviations, for example, a maximum of about 2 mm, preferably up to about 1 mm, more preferably up to about 0.1 mm, and / or, for example, a maximum of about 2°, preferably up to about 1°, more preferably up to about 0.1°.

[0073] In particular, the methods used to produce adapter-output eyeglass frames are not limited to specific manufacturing methods for adapter-output eyeglass frames. Rather, it is known to those skilled in the art that various manufacturing processes, such as casting, injection molding, 3D printing, and / or cutting, can be used to produce eyeglass frames, and therefore can also be used to produce adapter-output eyeglass frames.

[0074] In particular, this allows for the avoidance of further refitting of the adapter output frames, for example, during delivery to the wearer, since the adapter output frames already have a substantially second shape. Therefore, it is possible to provide the wearer with fully customized and / or biometrically adapted output frames. This specifically allows for the avoidance of fit discrepancies between the initial first fit and the final fit. It also allows for subsequent orders of additional adapter output frames without the need for refitting by an optometrist, for example.

[0075] Preferably, the method for producing a suitable output eyeglass frame further includes determining centering data for a suitable physical model eyeglass frame for the wearer. Specifically, the centering data may include at least the monocular pupillary distance, temple curvature angle, optical center height, interpupillary distance (see DIN EN ISO 13666:2019-12, section 3.2.28), corneal vertex distance (see DIN EN ISO 13666:2019-12, section 3.2.40), frame tilt angle (see DIN EN ISO 8624:2020-11, section 3.2.13), wearing tilt angle of the suitable physical model eyeglass frame (see DIN EN ISO 13666:2019-12, section 3.2.37), and / or eye rotation center. Specifically, the centering data can be determined or measured using a centering data measuring device. Rodenstock ImpressionIST® is an example of a centering data measurement device that can determine centering data particularly efficiently and accurately.

[0076] Alternatively or supplementally, the method for determining the fitting parameters, or the determination of the fitting parameters, may also include the step of determining centering data for a fitted physical model eyeglass frame for the eyeglass wearer. In particular, one or more data points of the determined centering data (e.g., the determined tilt angle of the frame) may be used or determined as fitting parameters.

[0077] Preferably, the method for producing an adaptive output eyeglass frame further includes producing the spectacle lenses while taking centering data into account. The production of spectacle lenses may specifically include calculating the spectacle lenses while taking centering data into account. An example of calculating spectacle lenses while taking centering data into account is described in the literature "Die Performanceindividueller Gleitsichtgläser (The performance of customized progressive lenses)" by Dipl.-Ing. (FH) Georg Esser and PD Dr. Dietmar Uttenweiler, DOZ, 12 / 2005, page 38. The production of spectacle lenses may also include the processing of the spectacle lenses and / or the edging of the spectacle lenses.

[0078] Preferably, the method for producing an adapter output eyeglass frame further includes inserting eyeglass lenses into the adapter output eyeglass frame.

[0079] Furthermore, within the scope of this invention, it is recognized that inserting spectacle lenses into an eyeglass frame (e.g., an adapter output frame) applies physical stress to the corresponding eyeglass frame, which may cause changes in the frame's fit. Therefore, after inserting spectacle lenses, a method for producing an adapter output frame may include adapting the adapter output frame with the inserted spectacle lenses such that, after inserting the spectacle lenses, the adapter output frame substantially has a second shape.

[0080] However, the method is not limited to this. Instead, spectacle lenses can also be inserted into the output spectacle frame blank (e.g., as described below). Specifically, taking into account adaptation parameters, spectacle lenses can be inserted into the output spectacle frame blank before and / or after shape adaptation.

[0081] In particular, it is recognized within the scope of this invention that differences between the fitted physical model eyeglass frame and the fitted output eyeglass frame can have a significant adverse effect on the corrective effect of the custom eyeglasses, since the centering data of the fitted physical model eyeglass frame can also be included in the calculation of the eyeglass lenses. Specifically, due to these differences between the fitted physical model eyeglass frame and the fitted output eyeglass frame, the centering data may differ, thus affecting the correspondingly calculated eyeglass lenses. By producing the fitted output eyeglass frame with regard to determined fitting parameters, such that the fitted output eyeglass frame substantially has a second shape, this difference can be precisely minimized or avoided, thereby achieving optimal corrective effect for the eyeglass wearer. In this context, "substantially" can preferably be understood to include additional tolerances. In other words, the method for producing the fitted output eyeglass frame includes, for example, producing the fitted output eyeglass frame with regard to determined fitting parameters, such that the fitted output eyeglass frame has a second shape within other tolerances or with regard to other tolerances.

[0082] For example, other tolerances may include quality tolerances. Here, quality tolerances can be understood as tolerances that affect the optical quality of the corrective effect, such as those caused by variations in corneal vertex distance. Quality tolerances can be particularly dependent on the corrective effect of the glasses, affecting the optical quality of the corrective effect in the same way that errors occurring when determining centering data affect the optical quality of the corrective effect. For example, during the production of the adapter output frame, an error (e.g., 1 mm) in fitting the temple length to the bend can directly affect the fit of the adapter output frame on the nose, which, for example, would cause a similar change in the corneal vertex distance, resulting in the adapter output frame sliding slightly down the wearer's nose. Furthermore, errors occurring, for example, in fitting the frame tilt angle, bridge width, and / or tilt angle can affect the interpupillary distance and / or tilt angle when worn. Therefore, for example, centering may no longer be applicable. Quality tolerances can be selected in a way that defines the maximum acceptable deviation from the second shape. In particular, the individual refractive data of a particular glasses wearer can also be considered when defining quality tolerances. For example, the following parameter values ​​can be used as reference values ​​for quality tolerances: corneal vertex distance is approximately 13 mm, interpupillary distance is approximately 64 mm, and the anterior tilt angle when worn is approximately 9 degrees and / or the anterior tilt angle of the frame is approximately 5 degrees.

[0083] Other tolerances may also include determination tolerances used to determine centering data. In particular, determination tolerances may be considered when determining centering data. Determination tolerances may be specifically chosen to define the maximum acceptable error, maximum acceptable measurement error, or determination error when determining centering data. For example, determination tolerances may include a frame tilt angle tolerance, wherein the frame tilt angle can be determined, for example, using a video centering device with an accuracy of approximately 0.5° to approximately 1° or a frame tilt angle tolerance. For example, determination tolerances may include a tilt angle tolerance, wherein the tilt angle can be determined, for example, using a template or template element or a tilt angle template element, for example, with an accuracy of approximately 1° or a tilt angle tolerance. For example, determination tolerances may include a tolerance for the temple length to the bend, wherein the temple length to the bend can be determined, for example, with an accuracy of approximately 1 mm or a temple length tolerance to the bend.

[0084] In particular, by taking into account at least the quality tolerances and determining the tolerances, it is possible to achieve exceptionally good overall optical performance for the eyeglasses that are fitted to the output frames or delivered to the customer, since the overall optical performance can depend at least on the quality determined by the centering data and the quality of the fitted output frames.

[0085] For example, other tolerances may include wearer-specific tolerances. For example, wearer-specific tolerances can be understood as, when this tolerance is exceeded, the wearer perceives that the fitted output frame is no longer equivalent to the fitted physical model frame, and may require, for example, for an optometrist to perform a different, more accurate fit (e.g., because the fitted output frame causes nasal discomfort due to incorrect transmission of the temple length to the bend after fitting, and / or causes pressure points for the wearer).

[0086] In addition, other tolerances can specify one or more corresponding tolerance ranges for each defined fitting parameter. Furthermore, one or more quality tolerances, one or more defined tolerances, and / or one or more wearer-specific tolerances can be specified for one or more fitting parameters. For example, an incorrect frame tilt angle can directly affect optical correction, for instance, by influencing temple length, and can also lead to different offsets from the nose pads to the front of the temples.

[0087] Preferably, the method for producing a fitted output eyeglass frame further includes determining the wearer's individual refractive data, particularly objective and / or subjective refractive data, wherein this individual refractive data is also taken into account when producing the eyeglass lenses. Therefore, a fitted output eyeglass frame can be produced with fitting parameters, centering data, and / or individual refractive data in mind, thereby providing an optimized fitted output eyeglass frame. In particular, individual refractive data can be determined or measured using a refractive data measurement device. The Rodenstock DNEye® scanner is an example of a refractive data measurement device that can determine individual refractive data particularly efficiently and accurately.

[0088] Preferably, the method for producing an adapted output eyeglass frame further includes determining the personal parameters of the eyeglass wearer, wherein the determined personal parameters are also taken into account when producing the eyeglass lenses. For example, the personal parameters of the eyeglass wearer may include one or more of the following parameters: interpupillary distance, corneal vertex distance, centering height, tilt angle when worn, and / or frame tilt angle.

[0089] In particular, personal refractive data, centering data, fitting parameters and / or personal parameters can be stored digitally and therefore reused, for example, for subsequent orders of other fitting output eyeglass frames.

[0090] Preferably, the production of the fitting output eyeglass frame includes 3D printing the fitting output eyeglass frame taking into account determined fitting parameters. Specifically, the 3D printer can be designed to produce the fitting output eyeglass frame taking into account determined fitting parameters, such that the 3D-printed fitting output eyeglass frame substantially has a second shape. This particularly allows fitting parameters to be considered during the production of the fitting output eyeglass frame, thus eliminating the need for subsequent fitting. Furthermore, the use of 3D printing technology allows the fitting output eyeglass frame to be produced virtually anywhere, wherever 3D printing equipment is available. Additionally, this also allows for the production of the fitting output eyeglass frame substantially immediately after the fitting parameters are determined. For example, after the fitting parameters are determined, the desired fitting output eyeglass frame can be produced on-site, such as at the optometrist and / or during the initial fitting.

[0091] Alternatively, manufacturing the adapter output eyeglass frame may include milling the adapter output eyeglass frame from a material blank (e.g., wood) taking into account determined adaptation parameters. Alternatively, manufacturing the adapter output eyeglass frame may include, for example, casting the adapter output eyeglass frame in an adaptable mold (e.g., a mold for carbon fiber reinforced plastic (CFRP) frames) taking into account determined adaptation parameters.

[0092] Furthermore, manufacturing a compatible output eyeglass frame may include providing an output eyeglass frame blank, wherein the output eyeglass frame blank has a shape different from the second shape. The output eyeglass frame blank may in particular be a shape-adjustable eyeglass frame. Manufacturing a compatible output eyeglass frame may also include adjusting the shape of the output eyeglass frame blank in consideration of determined fitting parameters to produce the compatible output eyeglass frame. Adjusting the shape of the output eyeglass frame blank may in particular include, at least in part, manually adjusting the shape of the output eyeglass frame blank, such as manually bending the output eyeglass frame blank. Alternatively or supplementarily, adjusting the shape of the output eyeglass frame blank may in part include adjusting the shape of the output eyeglass frame blank by a machine, such as bending the output eyeglass frame blank by a bending machine.

[0093] This makes it particularly easy to produce compatible output eyeglass frames.

[0094] In particular, the output eyeglass frame blank can essentially have a first shape. This makes it particularly easy to consider adaptation parameters when producing the adapter output eyeglass frames, since the adaptation parameters have defined at least one spatial difference between the first shape and the second shape.

[0095] Specifically, the output eyeglass frame blank can have a third shape, which is substantially different from the first shape, and particularly, the third shape and the first shape have substantially the same geometry. In other words, the output eyeglass frame blank and the solid model eyeglass frame can be different from each other, but they have substantially the same geometry.

[0096] If a particular eyeglass frame has the same point of contact with the wearer's head, and / or the weight and / or weight distribution of the particular eyeglass frame are not significantly different, then two eyeglass frames may have the same geometry.

[0097] Therefore, for example, two eyeglass frames can have substantially the same geometry, but they differ from each other, for example, in color and / or plastic trim and / or lens shape. Furthermore, for example, two eyeglass frames can have substantially the same geometry, but differ from each other, for example, in material properties. For example, a solid model eyeglass frame can be made of a lower-quality and / or flexible material (e.g., a metal alloy), while the output frame blank can be made of a higher-quality and / or stronger or harder material (e.g., a gold alloy and / or a platinum alloy). Alternatively or supplementarily, for example, a solid model eyeglass frame can have lower-quality trim and / or decorative stones, while the output frame blank can have higher-quality trim, decorative stones, or gemstones. This, for example, allows for a simplified fitting process for solid model eyeglass frames. Furthermore, optometrists no longer need to stock expensive solid model eyeglass frames.

[0098] Preferably, the method includes producing an adapted output frame taking into account determined adaptation parameters, such that the adapted output frame substantially has a second shape, wherein the adapted output frame has substantially the same geometry as the adapted physical model frame.

[0099] Specifically, this allows physical model frames to be at least not a perfect match to the model frames desired by the eyewearer. This minimizes the number or variety of model frames from which the eyewearer can choose the desired model frame. In particular, this allows frames (e.g., various styles offered by optometrists and / or frame manufacturers) to be grouped and categorized into fit categories. Each fit category can be assigned at least one frame, and / or each frame can be assigned to at least one fit category. In particular, all frames assigned to a particular fit category can have substantially the same geometry.

[0100] Furthermore, the determined adaptation parameters can be transferred to or applied to output eyeglass frames and / or output eyeglass frame blanks, which have substantially the same geometry but differ in shape from the solid model eyeglass frames or the first shape. Therefore, multiple output eyeglass frames and / or output eyeglass frame blanks of different shapes can be adapted while considering the same determined adaptation parameters. Thus, for example, specific solid model eyeglass frames can be provided for each adaptation category, thereby enabling optometrists to offer a wide selection of adapted output eyeglass frames without having to provide individual eyeglass frames to determine the adaptation parameters for each frame model, since the adaptation parameters can be transferred to any model within the adaptation category.

[0101] The method for producing an adapter output eyeglass frame may preferably further include inspecting the adapter output eyeglass frame. Specifically, the inspection may include comparing the shape of the adapter output eyeglass frame with adapter parameters and / or a second shape. The inspection may particularly include determining the shape of the adapter output eyeglass frame preferably using a first measuring device. The shape of the adapter output eyeglass frame may be determined as a third shape dataset, wherein the inspection may include comparing the first and / or second shape datasets with a third shape database.

[0102] This particularly allows for efficient and precise quality control of the adapted output eyeglass frames. Furthermore, by using a first measuring device to determine the shape of the adapted output eyeglass frames, the need for other measuring devices can be eliminated, and because the first measuring device is used to determine the fitting parameters and / or the second shape, as well as the shape of the adapted output eyeglass frames, particularly precise quality control can be achieved.

[0103] In particular, the adapted physical model eyeglasses frame and the adapted output eyeglasses frame can be the same eyeglasses frame in physical form.

[0104] The method for producing a fitted output eyeglass frame may also preferably include producing at least one fitted subsequent output eyeglass frame, for example, a second pair of glasses for the eyeglass wearer, taking into account determined fitting parameters. In particular, this allows for the reordering of subsequent output eyeglass frames without having to determine the fitting parameters again. It also particularly allows for a fully digital ordering process for subsequent output eyeglass frames, eliminating the need for a return visit to the optometrist. This is especially advantageous for eyeglass wearers, provided their individual refractive data remains substantially unchanged.

[0105] Exemplary Example 1 of a method for producing an adapter-output eyeglass frame

[0106] According to a first exemplary embodiment, a method for producing an adaptive output eyeglass frame for an eyeglass wearer may include at least the following steps: Provide a solid model eyeglass frame, wherein the solid model eyeglass frame has a first shape; An adapted physical eyeglass frame is generated by adapting the physical eyeglass frame to the eyeglass wearer, wherein the adapted physical eyeglass frame has a second shape different from the first shape, and the adaptation step includes optimizing the forward tilt angle of the frame to fit the face of the eyeglass wearer. The fitting parameters for the fitted physical model eyeglass frame are determined using a first measuring device, wherein the fitting parameters define at least one spatial difference between a first shape and a second shape, wherein the first shape and the second shape differ at least in their frame tilt angles. The first measuring device includes at least one template element designed for measuring the tilt angle of the eyeglass frame; and The manufacturing process, which involves producing an adapter output eyeglass frame that substantially has a second shape, taking into account the determined adaptation parameters, includes the following steps: Provides an output eyeglass frame blank, wherein the output eyeglass frame blank has a shape different from the second shape; and Taking into account the determined fitting parameters, the shape of the output eyeglass frame blank is adjusted so as to adjust at least the frame tilt angle of the output eyeglass frame blank by bending the output eyeglass frame blank in the bending machine, thereby producing a fitted output eyeglass frame.

[0107] Specifically, before adjusting the shape of the output eyeglass frame blank, suitable eyeglass lenses can be inserted into the output eyeglass frame blank.

[0108] Exemplary Example 2 of a method for producing an adapter output eyeglass frame

[0109] According to a second exemplary embodiment, a method for producing an adaptive output eyeglass frame for an eyeglass wearer may include at least the following steps: Provide a solid model eyeglass frame, wherein the solid model eyeglass frame has a first shape; An adapted physical eyeglass frame is generated by adapting the physical eyeglass frame to the eyeglass wearer, wherein the adapted physical eyeglass frame has a second shape different from the first shape, and the adaptation step includes adjusting the angle between the temples and the temple ends and adjusting the temple ends. The fitting parameters of the adapted physical model eyeglass frame are determined by a first measuring device, wherein the fitting parameters define at least one spatial difference between a first shape and a second shape, wherein the first shape and the second shape differ at least in their respective angles and temple ends. The first measuring device includes at least one camera for capturing one or more images of the adapted physical model eyeglass frame, wherein the first measuring device is designed to determine adaptation parameters from one or more images through image recognition. The steps for determining the adaptation parameters also include: Take at least one image that fits the physical model of the eyeglasses frame; Transmit at least one image to an image recognition unit; and At least one parametric curve of the temple shape is determined by the image recognition unit to determine the fitting parameters.

[0110] The first measuring device may specifically include an image recognition unit, or the image recognition unit may be designed as an external image recognition unit.

[0111] The method according to the second exemplary embodiment may further include producing an adaptive output eyeglass frame taking into account determined adaptation parameters, wherein the adaptive output eyeglass frame substantially has a second shape.

[0112] The steps in manufacturing compatible output eyeglass frames may also include: Provides an output eyeglass frame blank, wherein the output eyeglass frame blank has a shape different from the second shape; and When considering the determined fitting parameters or at least one parametric curve, it is preferable to manually adjust the shape of the output eyeglass frame blank.

[0113] Alternatively, manufacturing the adapter output eyeglass frame may include 3D printing the adapter output eyeglass frame, taking into account determined adaptation parameters, particularly 3D printing at least one adapter temple of the adapter output eyeglass frame. Specifically, at least parametric curves may be transferred or transmitted to a 3D printing system designed to print the adapter output eyeglass frame or at least one adapter temple.

[0114] System for determining adaptation parameters

[0115] One aspect relates to a system for determining fitting parameters for an adapted physical model eyeglass frame for an eyeglass wearer. The system includes a physical model eyeglass frame having a first shape. The system also includes fitting means for generating an adapted physical model eyeglass frame by fitting the physical model eyeglass frame to the eyeglass wearer, wherein the adapted physical model eyeglass frame has a second shape different from the first shape. The system further includes determining means for determining fitting parameters of the adapted physical model eyeglass frame, wherein the fitting parameters define at least one spatial difference between the first shape and the second shape.

[0116] A system for determining adaptation parameters may have any combination of features particularly of the methods described herein for determining adaptation parameters. In particular, a system for determining adaptation parameters may include means for performing the methods described herein for determining adaptation parameters, and / or be designed to perform the methods described herein for determining adaptation parameters.

[0117] A system for producing eyeglass frames that fit eyeglass wearers.

[0118] One aspect relates to a system for producing an adaptive output eyeglass frame for an eyeglass wearer. The system for producing an adaptive output eyeglass frame includes the system described herein for determining adaptation parameters of an adaptive physical model eyeglass frame for an eyeglass wearer. In particular, the system for producing an adaptive output eyeglass frame can have any combination of features of the system described herein for determining adaptation parameters.

[0119] The system for producing adapter output eyeglass frames also includes a production apparatus designed to produce adapter output eyeglass frames taking into account determined adapter parameters, such that the adapter output eyeglass frames substantially have a second shape.

[0120] Systems for producing adapter-output eyeglass frames can have any combination of features particularly described herein, especially the methods for producing adapter-output eyeglass frames. In particular, systems for producing adapter-output eyeglass frames may include means for performing the methods described herein, and / or be designed to perform the methods described herein. Attached Figure Description

[0121] The invention will now be described and explained in more detail by way of example using exemplary embodiments shown in the accompanying drawings. The various features of the embodiments described in the drawings can be combined in particular according to the needs of those skilled in the art.

[0122] Figure 1A A flowchart of an exemplary method for determining adaptation parameters is shown.

[0123] Figure 1B An exemplary method for producing an adapter output eyeglass frame is shown.

[0124] Figure 2 An exemplary system for producing adaptive output eyeglass frames is shown.

[0125] Figure 3 An example of a traditional method for producing eyeglass frames or glasses is shown.

[0126] Figure 4 An example of a method for producing output eyeglass frames is shown.

[0127] Figure 5 Another example of a method for producing output eyeglass frames is shown. Detailed Implementation

[0128] Figure 1A A flowchart illustrates an exemplary method 100 for determining fitting parameters of a suitable physical model eyeglass frame for an eyeglass wearer. Specifically, Figure 1A An exemplary sequence of steps 101 to 103 is shown.

[0129] In the first step 101, the exemplary method 100 includes providing an exemplary physical model eyeglass frame. Specifically, the exemplary physical model eyeglass frame can be selected from a variety of available physical model eyeglass frames of various styles offered by an optometrist or optician. Furthermore, the exemplary physical model eyeglass frame has a first shape.

[0130] In a further step 102, method 100 includes generating an adapted physical model eyeglass frame by adapting the physical model eyeglass frame to an eyeglass wearer, for example, to an eyeglass wearer in a personal use position. The adapted physical model eyeglass frame has a second shape different from the first shape.

[0131] In the subsequent step 103, method 100 includes determining adaptation parameters for adapting the physical model eyeglass frame. The adaptation parameters define at least one spatial difference between the first shape and the second shape, preferably defining at least each or all of the spatial differences between the first shape and the second shape.

[0132] Figure 1B An exemplary method 200 for producing an adaptive output eyeglass frame for eyeglass wearers is shown. Specifically, Figure 1B An exemplary sequence of steps for method 200 is shown.

[0133] The first step of method 200 specifically includes, according to Figure 1A Method 100 determines the fitting parameters for the adapted physical model eyeglass frame. In particular, method 200 may include any combination of the features of method 100 described herein.

[0134] In a further step 201, method 200 includes producing an adapter output eyeglass frame, taking into account determined adaptation parameters, such that the adapter output eyeglass frame substantially has a second shape.

[0135] Figure 2 An exemplary system 2 is shown for producing adaptive output eyeglass frames for eyeglass wearers.

[0136] The system 2 for producing adaptable output eyeglass frames specifically includes an exemplary system 1 for determining adaptation parameters of an adaptable physical model eyeglass frame for an eyeglass wearer. The system 1 for determining the adaptation parameters includes, for example, a physical model eyeglass frame 10, wherein the physical model eyeglass frame 10 has a first shape.

[0137] The system 1 for determining adaptation parameters also includes an adaptation device 20 for generating an adapted physical model eyeglass frame by adapting the physical model eyeglass frame 10 to an eyeglass wearer, wherein the adapted physical model eyeglass frame has a second shape different from the first shape.

[0138] The system 1 for determining adaptation parameters further includes a determining device 30 for determining adaptation parameters of an adapted physical model eyeglass frame, wherein the adaptation parameters define at least one spatial difference between a first shape and a second shape.

[0139] The system 2 for producing the adapter output eyeglass frame also includes a production device 40, wherein the production device 40 is designed to produce the adapter output eyeglass frame taking into account determined adaptation parameters, such that the adapter output eyeglass frame substantially has a second shape.

[0140] Figure 3 An example of a conventional method 300 for producing eyeglass frames or eyeglasses is shown, specifically including the conventional sequence of steps 301 to 307 of the conventional method.

[0141] In the first step 301, the eyeglass wearer can choose the desired eyeglasses or the desired eyeglass frame.

[0142] In the subsequent step 302, the optometrist adapts the desired eyeglass frame to the eyeglass wearer.

[0143] In a further step 303, based on the adapted eyeglass frame, at least the centering data of the adapted eyeglass frame is measured.

[0144] In addition, in a separate step 304, the refractive data of the eyeglass wearer can be measured.

[0145] Based on the centering data measured in step 303 and the refractive data measured in step 304, a suitable spectacle lens is calculated and generated in the fifth step 305.

[0146] In step 6, 306, the generated eyeglass lenses can be inserted into the misfit eyeglass frames.

[0147] Step 307 is necessary to make an ill-fitting eyeglass frame fit the eyeglass wearer, whereby the additional fitting is performed by an optometrist.

[0148] Steps 301 to 304 can be performed during the first visit to the optometrist. At least step 307 must be performed during the second visit, as this step requires the wearer's personal presence. Therefore, for the conventional method 300, at least two visits to the optometrist are absolutely necessary. Furthermore, discrepancies may arise in the fit according to steps 302 and 307, which can have a significant negative impact on the glasses or frames.

[0149] Figure 4 An example of a method 400 for producing output eyeglass frames according to the present disclosure is shown, which in particular includes an exemplary sequence of method steps 401 to 408.

[0150] In the first step 401, a physical model eyeglass frame is provided, for example, by the choice of the eyeglass wearer, wherein the physical model eyeglass frame has a first shape.

[0151] In the second step 402, an adapted physical model eyeglass frame is generated by adapting the physical model eyeglass frame to the eyeglass wearer, wherein the adapted physical model eyeglass frame has a second shape different from the first shape.

[0152] In a further third step 403, adaptation parameters of the physical model eyeglass frame adapted according to step 402 are determined, wherein the adaptation parameters define at least one spatial difference between the first shape and the second shape.

[0153] Furthermore, based on or using the model eyeglass frame adapted according to step 402, in step 404, centering data for the adapted physical model eyeglass frame is determined or measured for the eyeglass wearer. For example, centering data may include interpupillary distance, corneal vertex distance, centering position, tilt angle when worn, and / or frame tilt angle.

[0154] In a separate fifth step 405, the individual refractive data of the eyeglass wearer is determined, particularly objective and / or subjective refractive data. Step 405 may be performed in parallel and / or substantially simultaneously with step 404. Alternatively, in step 405, if the refractive data is known, the individual refractive data may be provided.

[0155] Taking into account the centering data measured in step 404 and the refractive data measured in step 405, a suitable spectacle lens is calculated and generated in the sixth step 406.

[0156] In step 407, an output eyeglass frame blank can be provided, wherein the output eyeglass frame blank has a shape different from the second shape. The eyeglass lenses calculated and generated in step 406 can be inserted into or ground into the output eyeglass frame blank.

[0157] In step 8, 408, the shape of the output eyeglass frame blank can be adjusted to produce the adapted output eyeglass frame, taking into account the adaptation parameters determined in step 403.

[0158] Specifically, steps 406 to 408 may include the step of producing an adapter output eyeglass frame taking into account determined adaptation parameters, wherein the adapter output eyeglass frame substantially has a second shape.

[0159] In particular, steps 401 to 408 can have any combination of the features described herein.

[0160] Steps 401 to 405 can be performed during the first visit to the optometrist. In this exemplary method 400, a second visit to the optometrist can be advantageously omitted because the determined fitting parameters are specifically suitable for this purpose, and the wearer's presence is not required. Furthermore, this avoids discrepancies between the fitting results in steps 402 and 408.

[0161] Figure 5 Another example of a method 500 for producing output eyeglass frames according to the present disclosure is shown, which in particular includes an exemplary sequence of method steps 501 to 508.

[0162] In the first step 501, a physical model eyeglass frame is provided, for example, by the choice of the eyeglass wearer, wherein the physical model eyeglass frame has a first shape.

[0163] In the second step 502, an adapted physical model eyeglass frame is generated by adapting the physical model eyeglass frame to the eyeglass wearer, wherein the adapted physical model eyeglass frame has a second shape different from the first shape.

[0164] In a further third step 503, adaptation parameters of the physical model eyeglass frame adapted according to step 502 are determined, wherein the adaptation parameters define at least one spatial difference between the first shape and the second shape.

[0165] Furthermore, based on or using the model eyeglass frame adapted according to step 502, in step 504, centering data for the adapted physical model eyeglass frame is determined or measured for the eyeglass wearer. For example, centering data may include interpupillary distance, corneal vertex distance, centering position, tilt angle when worn, and / or frame tilt angle.

[0166] In a separate fifth step 505, the individual refractive data of the eyeglass wearer is determined, particularly objective and / or subjective refractive data. Step 505 may be performed in parallel and / or substantially simultaneously with step 504. Alternatively, in step 505, if the refractive data is known, the individual refractive data may be provided.

[0167] In particular, steps 501 to 505 can substantially correspond to, for example: Figure 4 Steps 401 to 405 are shown.

[0168] In step 506, the adapted output eyeglass frame can be generated taking into account the determined adaptation parameters. For example, the adapted output eyeglass frame can be produced by 3D printing, taking into account the determined adaptation parameters. However, step 506 is not limited to this 3D printing. Instead, various manufacturing processes can be used to produce the adapted output eyeglass frame, taking into account the determined adaptation parameters. Other examples include casting or milling the adapted output eyeglass frame. Therefore, the adapted output eyeglass frame produced by step 506 can, in particular, substantially have a second shape.

[0169] Taking into account the centering data measured in step 504 and the refractive data measured in step 505, a suitable spectacle lens is calculated and generated in the seventh step 507.

[0170] Steps 6 and 7 can be performed individually and / or independently of each other, which significantly improves the efficiency and flexibility of the method.

[0171] In step 508, the spectacle lens calculated and generated in step 507 can be inserted or ground into the adapter output spectacle frame produced in step 506.

[0172] In particular, steps 501 to 508 can have any combination of the features described herein.

[0173] This invention is not limited to the exemplary embodiments described herein and / or shown in the accompanying drawings. In particular, the method for determining the fitting parameters of the adapted physical model eyeglass frame, the method for producing the adapted output eyeglass frame, the system for determining the fitting parameters of the adapted physical model eyeglass frame, and the system for producing the adapted output eyeglass frame may each have any combination of the features disclosed herein.

[0174] List of reference numerals 1. System for determining adaptation parameters 2. System for producing adapter output eyeglass frames 10 Solid model eyeglass frames 20 adapter devices 30 Determining device 40 Production Units 100 Methods for determining adaptation parameters Methods and steps (101-103) 200 Method for producing output eyeglass frames 201 Method and Steps 300 Traditional Methods 301-307 Traditional Methods and Procedures 400 Method for producing output eyeglass frames 401-408 Methods and Steps 500 Method for producing output eyeglass frames 501-508 Method Steps

Claims

1. A method (100) for determining fitting parameters of a fitted physical model eyeglass frame for an eyeglass wearer, the method comprising: providing a physical model eyeglass frame (10), wherein the physical model eyeglass frame (10) has a first shape; generating the fitted physical model eyeglass frame by fitting the physical model eyeglass frame (10) to an eyeglass wearer, wherein the fitted physical model eyeglass frame has a second shape different from the first shape; and determining fitting parameters of the fitted physical model eyeglass frame, wherein the fitting parameters define at least one spatial difference between the first shape and the second shape.

2. The method (100) of claim 1, wherein specifying or determining the first shape as a first shape data set, and the method further comprising: determining the second shape as a second shape data set, wherein the fitting parameters are determined based on a comparison of the first shape data set and the second shape data set.

3. The method (100) according to any of the preceding claims, wherein the fitting parameters comprise at least one or more of the following parameters: - temple length to bend; - temple tip length; - total temple length; - angle between temple and temple tip to bend; - temple tip shape; - curvature of the left and / or right temple in horizontal direction; - opening angle between the bridge and the left and / or right temple; - tilt angle; - front tilt angle of the frame; - nose bridge angle between the two nose pads of the eyeglass frame; - nose bridge height; - nose bridge width; - nose bridge model; - fitting of the nose bridge; - lens shape; - lens size; - position of at least one drilling.

4. The method (100) according to any one of the preceding claims, wherein the fitting parameters comprise at least one absolute fitting parameter, the value of which is determined by an absolute measurement of the second shape; and / or wherein the fitting parameters comprise at least one relative fitting parameter, the value of which is determined by a relative measurement based on the first shape and the second shape; and / or wherein the fitting parameters comprise at least an identification of the physical model eyeglass frame and / or an identification of the first shape.

5. The method (100) according to any one of the preceding claims, wherein the fitting parameters are determined by a first measuring device, wherein the first measuring device comprises at least one camera for taking one or more images of the fitted physical model eyeglass frame, wherein the first measuring device is designed for determining the fitting parameters from the one or more images by image recognition; and / or wherein the first measuring device comprises at least one 3D scanning unit, wherein the 3D scanning unit is designed for determining the fitting parameters; and / or wherein the first measuring device comprises at least one haptics detection unit, wherein the at least one haptics detection unit is designed for determining the fitting parameters.

6. A method (200) for producing a fitted output eyeglass frame for an eyeglass wearer, the method comprising: determining fitting parameters of a fitted physical model eyeglass frame according to the method (100) of any one of claims 1 to 5; and The adapted output eyewear frame is produced in consideration of the determined adaptation parameters, such that the adapted output eyewear frame substantially has the second shape.

7. The method (200) according to claim 6, further comprising: determining centering data of the adapted physical model eyewear frame for the eyewear wearer, and / or determining personal refraction data of the eyewear wearer; and generating an eyewear lens in consideration of the centering data and / or the personal refraction data.

8. The method (200) according to any one of claims 6 to 7, wherein The step of producing the adapted output eyewear frame comprises: 3D printing the adapted output eyewear frame in consideration of the determined adaptation parameters; or wherein the step of producing the adapted output eyewear frame comprises: milling the adapted output eyewear frame out of a material blank in consideration of the determined adaptation parameters; or wherein the step of producing the adapted output eyewear frame comprises: casting the adapted output eyewear frame in consideration of the determined adaptation parameters.

9. The method (200) according to any one of claims 6 to 7, wherein, The step of producing the adapted output eyewear frame further comprises: providing an output eyewear frame blank, wherein the output eyewear frame blank has a shape different from the second shape; and adjusting the shape of the output eyewear frame blank in consideration of the determined adaptation parameters to produce the adapted output eyewear frame.

10. The method (200) of claim 9, wherein, The output eyewear frame blank substantially has the first shape; or wherein the output eyewear frame blank has a third shape, wherein the third shape is substantially different from the first shape.

11. The method (200) according to any one of claims 6 to 10, further comprising inspecting the fitted output eyewear frame, wherein, The checking step comprises comparing the shape of the adapted output eyewear frame with the adaptation parameters and / or the second shape.

12. The method (200) according to any one of claims 6 to 11, further comprising: producing at least one adapted subsequent output eyewear frame in consideration of the determined adaptation parameters.

13. A system (1) for determining adaptation parameters of an adapted physical model eyewear frame for an eyewear wearer, the system comprising: a physical model eyewear frame (10), wherein the physical model eyewear frame (10) has a first shape; an adaptation device (20) for generating the adapted physical model eyewear frame by adapting the physical model eyewear frame (10) to an eyewear wearer, wherein the adapted physical model eyewear frame has a second shape different from the first shape; and a determination device (30) for determining adaptation parameters of the adapted physical model eyewear frame, wherein the adaptation parameters define at least one spatial difference between the first shape and the second shape.

14. A system (2) for producing an adapted output eyewear frame for an eyewear wearer, the system comprising: a system (1) for determining adaptation parameters of an adapted physical model eyewear frame for an eyewear wearer according to claim 13; and a production device (40), wherein the production device (40) is designed for producing the adapted output eyewear frame in consideration of the determined adaptation parameters, such that the adapted output eyewear frame substantially has a second shape.

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