Method and system for determining adaptation parameters for an adapted physical spectacles frame, and method and system for producing an adapted output spectacles frame for a spectacles wearer

Abstract

The invention relates to a method for determining adaptation parameters for an adapted physical model spectacles frame for a spectacles wearer, said method comprising: providing a physical model spectacles frame, wherein the physical model spectacles frame has a first shape; generating the adapted physical model spectacles frame by adapting the physical model spectacles frame on the spectacles wearer, wherein the adapted physical model spectacles frame has a second shape, which differs from the first shape; and determining adaptation parameters of the adapted physical model spectacles frame, wherein the adaptation parameters define at least a spatial difference between the first shape and the second shape. The invention also relates to a system for determining adaptation parameters for an adapted physical model spectacles frame for a spectacles wearer, and a method and system for producing an adapted output spectacles frame for a spectacles wearer.

Description

[0001] Method and system for determining fitting parameters for a fitted physical spectacle frame, and method and system for producing a fitted output spectacle frame for a spectacle wearer

[0002] Description

[0003] The invention relates to a method for determining fitting parameters for a fitted physical spectacle frame, a method for producing a fitted output spectacle frame for a spectacle wearer, a system for determining fitting parameters for a fitted physical spectacle frame and a system for producing a fitted output spectacle frame for a spectacle wearer.

[0004] The invention lies in particular in the field of spectacle manufacturing, in particular individual spectacle manufacturing, and further in the field of spectacle frame technology.

[0005] When manufacturing customized eyeglasses for a customer, an initial visit to an optician is usually necessary. During this visit, the customer selects a frame for the new, customized pair of glasses, which the optician then adjusts to ensure an optimal fit. Based on this adjusted frame, the optician can determine centering data for the customer, which can be incorporated into the production of the lenses.

[0006] To produce the customized glasses, a new frame is regularly used, into which the corresponding lenses are fitted. When the customized glasses are issued, the customer must visit the optician again, during which not only the customized glasses are handed over to the customer, but they are also necessarily adjusted again to ensure an optimal fit.

[0007] Within the scope of the present invention, it was recognized for the first time that such a procedure based on a first fitting and a second fitting can negatively influence the corrective effect of the spectacles. This can be due in particular to differences between the first and second fitting, which lead to different parameters between the spectacles or spectacle frames selected and fitted during the first visit and the spectacles or spectacle frames issued and re-fitted during the second visit. Thus, for example, spectacle lenses manufactured taking into account the centration data determined during the first visit can be positioned differently in the issued spectacles, thereby impairing the corrective effect of the spectacles.

[0008] Furthermore, within the scope of the present invention, it was recognized that the above-mentioned conventional procedure is labor-intensive, since a visit to the optician and an individual adjustment are required twice. Furthermore, it was recognized that for each follow-up pair of glasses or each reorder of glasses by the customer, at least one additional visit to the optician with another individual adjustment is necessary.

[0009] It is therefore an object of the present invention to provide improved means for producing a spectacle frame and / or for producing spectacles.

[0010] This object is solved by the independent claims, while preferred embodiments form the subject matter of the dependent claims.

[0011] Method for determining adjustment parameters

[0012] One aspect relates to a method for determining fitting parameters for a customized physical model spectacle frame for a spectacle wearer. The method comprises providing a physical model spectacle frame. The physical model spectacle frame can, in particular, be any model spectacle frame that can preferably be selected by a spectacle wearer from a plurality of available physical model spectacle frames. The plurality of available physical model spectacle frames can, for example, be an assortment of model spectacle frames from an optician or an eyewear store.

[0013] The physical model spectacle frame can, in particular, have two first model spectacle lenses, wherein the two first model spectacle lenses are designed to be insertable into the physical model spectacle frame. Preferably, the two first model spectacle lenses are inserted into the physical model spectacle frame.

[0014] The spectacle frames described herein, such as the physical model spectacle frame and / or the adapted model spectacle frame described below, are not limited to specific types of spectacle frames. For example, one or more of the spectacle frames described herein can be designed as full-rim frames, half-rim frames and / or rimless frames. Alternatively or additionally, one or more of the spectacle frames described herein can be designed, for example, as frames made of natural organic material (see, for example, DIN EN ISO 7998:2005, point 2.2) such as wood, as plastic frames (see, for example, DIN EN ISO 7998:2005, point 2.1), as metal frames (see, for example, DIN EN ISO 7998:2005, point 2.3) and / or as combined frames (see, for example, DIN EN ISO 7998:2005, point 2.4), although the spectacle frames are not limited to these example materials.Furthermore, one or more of the spectacle frames described herein can be designed, for example, as spectacle frames with rigid, straight temples, such as in sports frames, or as thin wire frames. Furthermore, one or more of the spectacle frames described herein can be designed, for example, as spectacle frames with or without temples. Examples of possible temple-free spectacle frames are pince-nez and / or optical swimming goggles. Furthermore, the spectacle frames described herein can be designed as spectacle frames for spectacles, wherein the spectacles preferably at least partially correct at least one visual impairment of the spectacle wearer. The spectacles can be, for example, progressive spectacles or varifocal spectacles. However, the spectacle frames and / or spectacles described herein are not limited thereto.For example, the spectacle frames described herein can also be designed as spectacle frames for other spectacles (in particular other spectacles which also have or can provide an optical corrective effect), such as safety goggles and / or sunglasses and / or swimming goggles.

[0015] The physical model spectacle frame can, in particular, have at least one adjustable element, wherein the at least one adjustable element is designed to be adaptable to the anatomy of the wearer's head. The at least one adjustable element can further be configured such that an adjustment of the at least one adjustable element has an effect on (or a change in) the positioning of the physical model spectacle frame or a positioning of first model spectacle lenses inserted or insertable into the physical model spectacle frame relative to the wearer or the wearer's eyes, in particular in an individual wearing position. In particular, such a positioning can influence the optical corrective effect of a spectacle frame or pair of spectacles, whereby this can be efficiently taken into account and / or adjusted during the adjustment of the physical model spectacle frame.

[0016] The physical model spectacle frame has a first shape. The first shape can, in particular, be a physical, three-dimensional shape of the physical model spectacle frame. The first shape can, in particular, essentially correspond to an outer surface of the physical model spectacle frame.

[0017] In particular, the physical model spectacle frame can have movable elements, wherein, for example, a temple of the physical model spectacle frame can be designed to be foldable by means of a hinge. In particular, the first shape can be a physical, three-dimensional shape of the physical model spectacle frame in a first alignment state. The first alignment state can, in particular, specify orientations of one or more movable elements of the physical model spectacle frame. In this case, the first alignment state can, for example, specify that the temples of the physical model spectacle frame are aligned in an unfolded state. For example, the first alignment state can specify orientations of one or more movable elements of the physical model spectacle frame according to the individual usage position of the physical model spectacle frame.This allows for a particularly simple determination of the fitting parameters. Furthermore, such an initial alignment state based on the individual wear position enables a particularly efficient and precise determination of the fitting parameters, as well as increasing the accuracy of fit of a correspondingly adjusted spectacle frame.

[0018] The method further comprises creating the adapted physical model spectacle frame by adapting, preferably physically adapting, the physical model spectacle frame to the spectacle wearer, preferably to the spectacle wearer in an individual wearing position for the spectacle wearer. In the context of the present disclosure, the individual wearing position can be understood in particular as an individual arrangement of the adapted physical model spectacle frame when the adapted physical model spectacle frame is worn as intended on a head of the spectacle wearer. Intended wearing can in particular be understood as wearing a spectacle frame, such as the adapted physical model spectacle frame, on a head of the spectacle wearer, wherein spectacle lenses inserted into the spectacle frame can fulfill at least one function with respect to the eyes of the spectacle wearer.The at least one function can in particular be a corrective function for at least one visual impairment of the eyes of the spectacle wearer and / or a protective function, e.g. against excessively intense incident light, for the eyes of the spectacle wearer, but is not limited to this. The adaptation of the physical model spectacle frame can in particular comprise a physical adaptation or modification of the physical model spectacle frame, preferably to an individual face shape and / or head shape of the spectacle wearer. The adaptation of the physical model spectacle frame can, for example, comprise a deformation and / or bending and / or lengthening and / or shortening of at least one element, e.g. a temple, of the physical model spectacle frame, but is not limited to this.In particular, at least one possible adjustment step can be predetermined for the physical model spectacle frame, preferably for each physical model spectacle frame of the plurality of available physical model spectacle frames. By predetermining the possible adjustment steps in this way, adjustment of the respective physical model spectacle frame can be simplified, and determination of the adjustment parameters of the respective adjusted physical model spectacle frame can be made particularly efficient. The at least one possible adjustment step can, for example, comprise a possible deformation and / or a possible bending and / or a possible lengthening and / or a possible shortening of at least one element of the physical model spectacle frame.Adjusting the physical model eyeglass frame may, for example, comprise selecting one or more of the possible adjustment steps and performing the one or more selected possible adjustment steps.

[0019] The adaptation of the physical model spectacle frame can, in particular, be designed such that the physical model spectacle frame is individually adapted to the wearer, in order to enable an optimal or optimized fit of the adapted physical model spectacle frame when worn by the wearer, in particular when worn as intended. In particular, the creation of the adapted physical model spectacle frame can be carried out manually, preferably by specialist personnel such as an optician.

[0020] In particular, the physical model spectacle frame can be designed to be easily adjustable. For example, the physical model spectacle frame can have one or more adjustment elements. The one or more adjustment elements can be designed to be moved from an initial state to a final state when the physical model spectacle frame is adjusted to the wearer, in order to adjust the physical model spectacle frame to the wearer. For example, the one or more adjustment elements can comprise a length-adjustable element, e.g. a length-adjustable temple element, the length of which can be adjusted or fixed when the physical model spectacle frame is adjusted. For example, the one or more adjustment elements can comprise a fixable joint element, e.g. a fixable temple end joint element, the orientation orAlignment angle can be set or specified when adjusting the physical model eyeglass frame.

[0021] In particular, at least one, preferably each, adjustment element and / or the physical model spectacle frame can have a measuring scale. The respective measuring scale can be attachable to the adjustment element and / or to the physical model spectacle frame or can be formed integrally therewith. For example, the respective measuring scale can be printed on a corresponding adjustment element and / or on the physical model spectacle frame. The measuring scale can in particular be designed so that a respective initial state and / or final state of the adjustment element can be read or quantified on the measuring scale, preferably by a measuring device (e.g., the first measuring device, see below) and / or manually. In particular, determining the adjustment parameters can comprise determining at least one adjustment parameter based on a read or quantified initial state and / or final state.

[0022] For example, the one or more adjustment elements can comprise at least one length-adjustable temple element, as described above. The length-adjustable temple element can have a length measuring scale. An initial state (e.g., a temple length to the nose of the physical model spectacle frame) of the length-adjustable temple element can be read or quantified on the length measuring scale. Alternatively or additionally, an end state (e.g., a temple length to the nose of the adjusted physical model spectacle frame) of the length-adjustable temple element can be read or quantified on the length measuring scale. At least one adjustment parameter (e.g., a temple length to the nose) can be determined, for example, based on the read or quantified initial state and / or end state.

[0023] Alternatively or additionally, the physical model spectacle frame can be made of a deformable material. The physical model spectacle frame can have at least one deformation section made of the deformable material. The deformable material can be designed to be plastically deformed by manual and / or mechanical action, e.g., by bending by skilled personnel. In particular, the physical model spectacle frame can be made of a different material than the customized output spectacle frame (see below). In particular, the deformable material can have a lower rigidity than a material of the customized output spectacle frame.

[0024] This makes it particularly advantageous to easily define adjustment parameters even for spectacle frames that are, or are to be, made of materials that are difficult to deform, such as wood and / or carbon. Especially with such spectacle frames made of materials that are difficult to deform, the second adjustment during the traditionally required second visit to the optician is only possible with considerable effort, e.g., with the development of significant heat. However, with the methods according to the invention, the adjustment parameters can already be taken into account, for example, during the manufacture of the spectacle frame made of the material that is difficult to deform.

[0025] By creating a customized physical model frame by fitting the physical model frame to the wearer, a particularly precise fit can be achieved, as the adjustment can be performed directly on the wearer. Furthermore, the use of specialized personnel can further increase accuracy. Furthermore, fitting the physical model frame allows for direct feedback from the wearer, enabling a particularly good, customized fit.

[0026] The customized physical model spectacle frame has a second shape. The second shape can, in particular, be a physical, three-dimensional shape of the customized physical model spectacle frame. The second shape can, in particular, essentially correspond to an outer surface of the customized physical model spectacle frame.

[0027] In particular, the customized physical model spectacle frame can have movable elements, for example, temples of the customized physical model spectacle frame being designed to be foldable by means of a hinge. In particular, the second shape can be a physical, three-dimensional shape of the customized physical model spectacle frame in a second orientation state. The second orientation state can, in particular, define the orientations of one or more movable elements of the customized physical model spectacle frame.

[0028] The second alignment state can, for example, specify that the temples of the adjusted physical model spectacle frame are aligned in an unfolded state. For example, the second alignment state can specify the alignment of one or more movable elements of the adjusted physical model spectacle frame according to the individual usage position of the adjusted physical model spectacle frame. This can, on the one hand, enable a particularly simple determination of the adjustment parameters. On the other hand, such a second alignment state according to the individual usage position can enable a particularly efficient and precise determination of the adjustment parameters, and the accuracy of fit of a correspondingly adjusted output spectacle frame can be increased.

[0029] The first alignment state and the second alignment state can preferably be substantially identical. This can, in particular, enable a simplified comparison between the first shape and the second shape.

[0030] The second shape differs from the first shape. In other words, adapting the physical model eyeglass frame can be designed to modify the physical model eyeglass frame or the first shape of the physical model eyeglass frame to create the adapted physical model eyeglass frame.

[0031] The method further comprises determining adjustment parameters of the adjusted physical model spectacle frame. In particular, the adjustment parameters can preferably be determined by means of a first measuring device. However, the method is not limited to just a first measuring device. Rather, one or more measuring devices can be provided for determining the adjustment parameters. The adjustment parameters can comprise only one adjustment parameter or several adjustment parameters. The adjustment parameters can preferably be determined as a digital data set. Furthermore, the digital data set can comprise at least an identification of the physical model spectacle frame and / or an identification of the first mold. The adjustment parameters can be determined at least partially automatically (e.g., by means of the first measuring device) and / or at least partially manually (e.g.,using the first measuring device), for example by qualified personnel.

[0032] The determined fitting parameters can be transmitted, for example, to a system for determining fitting parameters for a fitted physical model spectacle frame for a spectacle wearer and / or to a system for producing a fitted output spectacle frame for a spectacle wearer.

[0033] The adjustment parameters define at least one spatial difference, preferably at least each or all spatial differences, between the first shape and the second shape. In particular, the adjustment parameters can be suitable for determining the positioning of spectacle lenses that can be inserted into the adjusted model spectacle frame relative to a reference system of the wearer's head when wearing or using the adjusted physical model spectacle frame, preferably as intended, preferably in an individual wearing position of the adjusted physical model spectacle frame.

[0034] Using the described method, and in particular the determination of the fitting parameters, it is possible to determine the fitting of the physical model frame to the wearer particularly easily and efficiently. The fitting parameters can be taken into account, for example, when manufacturing customized glasses. This way, for example, a second visit to the optician can be eliminated, and in particular, a second fitting can be dispensed with when dispensing customized glasses, while still achieving a good, individual fit for the customized glasses.

[0035] Furthermore, the method described here significantly improves the accuracy and individualization of the glasses or glasses frames for the wearer. For example, it is not necessary to measure the head and / or face of the wearer or to create a 3D model thereof. The head and / or face of the wearer are particularly complex objects, and errors or measurement gaps can often occur during measurement, for example due to shadows caused by ears or hair. The method described here makes it possible to determine the fitting parameters after fitting to the wearer and, in particular, without the wearer or the wearer's head being present. This also makes it possible to make the wearer's first visit to the optician shorter and more efficient.

[0036] Furthermore, taking the adjustment parameters into account, any number of customized pairs of glasses can be ordered, manufactured, and delivered to the wearer, with each of these customized pairs of glasses being optimally adjusted to the wearer without the need for further adjustments, e.g., by an optician. In particular, this means that the fit of the customized physical model frame for the wearer can be essentially identical to the fit of each customized output frame manufactured taking the adjustment parameters into account, so that the individual parameters of the respective frames essentially match. This also ensures that the parameters taken into account when calculating the lenses for the wearer, e.g., centration data, match the actual wearing situation or the actual fit, thus allowing optimal correction.This is particularly advantageous for glasses where precise positioning is important, such as progressive lenses. Thus, the process described here enables repeat orders, e.g., purely online reorders, for additional frames or pairs of glasses for the wearer without requiring additional visits or adjustments for the wearer.

[0037] Furthermore, the method for determining the adjustment parameters can also increase the efficiency and security of the method, and preferably the data security of the method. For example, according to the method for determining the adjustment parameters, no biometric data of the face or head of the spectacle wearer needs to be determined. Furthermore, no models, e.g. three-dimensional ones, of the face and / or head of the spectacle wearer need to be created. On the one hand, the method is therefore significantly simpler and involves reduced computing, measuring and / or data storage effort. On the other hand, it can prevent unauthorized access to biometric and / or personal data of the face and / or head of the spectacle wearer because such data does not need to be determined.

[0038] The adaptation parameters can further preferably define at least one spatial correspondence, preferably at least each or all spatial correspondences, between the first shape and the second shape. This allows the adaptation parameters to completely define, in particular, the second shape with respect to the first shape.

[0039] The first shape can be specified, for example, as a first shape data set, preferably as a first digital shape data set. The first shape data set can, in particular, be designed to be readable by a processor and / or a computing device. Preferably, the first shape data set can be stored in at least one database. By specifying the first shape data set in this way, the method can be made particularly efficient, since no further measurements are necessary to create the first shape data set. Furthermore, this allows shape data sets for other model spectacle frames to be taken into account efficiently and quickly, which can, for example, be stored in the at least one database.

[0040] Alternatively, the first shape can be determined as the first shape data set, preferably as the first digital shape data set. The determination of the first shape as the first shape data set can take place before the customized physical model spectacle frame is created. The determined first shape data set can also be stored in at least one database. By determining the first shape data set in this way, a particularly precise method can be enabled, since there is no need to resort to predefined shape data sets that could possibly deviate from the first shape. Furthermore, the method can thus also be carried out if the first shape is not predefined or is unknown.

[0041] Furthermore, the first shape data set can be determined using the first measuring device. This can further improve the accuracy and efficiency of the method. For example, calibration errors of the first measuring device, which can occur during both the determination of the first shape data set and the determination of the second shape data set, can be efficiently taken into account and eliminated, as is the case with relative measurements, for example.

[0042] The method can preferably comprise determining the second shape as a second shape data set, preferably as a second digital shape data set. In particular, at least the fitting parameters and / or the second shape data set can be or can be entered into an ordering system. The ordering system can in particular comprise means for producing a spectacle frame, in particular a fitted output spectacle frame. The ordering system can in particular comprise a system for producing a fitted output spectacle frame, as described herein. The second shape data set can in particular be designed to be readable by a processor and / or a computing device. In particular, a format of the second shape data set can substantially correspond to a format of the first shape data set. Alternatively, a format of the second shape data set can partially correspond to a format of the first shape data set orcorrespond to a subset of the format of the first shape data set. This allows, for example, a particularly efficient comparison between the first shape data set and the second shape data set. The second shape data set can, in particular, be stored in at least one database. The determination of the second shape as the second shape data set can take place after the adapted physical model spectacle frame has been created.

[0043] Preferably, the adaptation parameters can be determined based on a comparison of the first shape data set and the second shape data set. In particular, the first shape data set and the second shape data set can have a substantially identical format, which allows the comparison to be carried out in a simplified manner. In particular, the method can comprise comparing the first shape data set and the second shape data set to determine the at least one spatial difference between the first shape and the second shape.

[0044] In particular, at least one adjustment parameter to be determined can be predetermined for the physical model spectacle frame, preferably for each physical model spectacle frame of the plurality of available physical model spectacle frames. In this case, determining adjustment parameters can in particular comprise determining each of the adjustment parameters to be determined that are predetermined for the physical model spectacle frame or for the respective physical model spectacle frame. By predetermining the adjustment parameters to be determined in this way, on the one hand, an adjustment of the respective physical model spectacle frame can be simplified, and on the other hand, a determination of the adjustment parameters of the respective adjusted physical model spectacle frame can be made particularly efficient.

[0045] In particular, at least one adjustment parameter to be determined can be assigned to each predetermined possible adjustment step of a physical model spectacle frame, and / or vice versa. For example, for an exemplary physical model spectacle frame, adjusting a temple length can be predetermined as a possible adjustment step, wherein a temple length to the nose can be assigned to this exemplary possible adjustment step as an adjustment parameter to be determined.

[0046] In particular, the adaptation parameters may include at least one or more of the following parameters:

[0047] - a temple length to the bow, for example measured in mm (see DIN EN ISO 8624:2020-11, section 3.2.7);

[0048] - a length of a temple end, for example measured in mm (see DIN EN ISO 8624:2020-11, section 3.2.8);

[0049] - a total temple length, for example measured in mm, e.g. for adjustable-length temples (see DIN EN ISO 8624:2020-11, section 3.1.7);

[0050] - an angle between the bow and the bow end, in particular an angle between an axis of one bow end and an axis of the rest of the bow, for example measured in degrees (e.g. see DIN EN ISO 8624:2020-11, Figure 2, angle between bow length and the bow and the length of the bow end);

[0051] - a shape of the temple end for adaptation to the ear cup of the wearer, for example as a parameterized curve; - a curvature of the left and / or right temple in a horizontal direction for adaptation to the head of the wearer, for example as a radius of curvature and / or as a parameterized curve;

[0052] - an opening angle between a spectacle frame and the left and / or right temple, for example measured in degrees (e.g. see DIN EN ISO 8624:2020-11, Figure 3);

[0053] - an inclination angle, e.g. measured in degrees (see e.g. DIN EN ISO 8624:2020-11 , section 3.2.14);

[0054] - a lens angle, for example measured in degrees (see e.g. DIN EN ISO 8624:2020-11, section 3.2.13);

[0055] - a bridge angle between two nose pads of a spectacle frame, for example measured in degrees;

[0056] - a bridge height, e.g. measured in mm (see e.g. DIN EN ISO 8624:2020-11, section 3.2.6);

[0057] - a bridge width, for example measured in mm (see DIN EN ISO 8624:2020-11, section 3.2.5);

[0058] - a bridge model, for example as a selection from different variants of a bridge for a spectacle frame, specified e.g. as a model number;

[0059] - an adjustment of the nasal bridges, for example specified as a parameterized curve;

[0060] - a disc shape, for example specified as a parameterized curve (see DIN EN ISO 8624:2020-11, section 3.2.10);

[0061] - a lens size for rimless glasses or frames, for example specified as a parameterised curve;

[0062] - a position of at least one drill hole in rimless spectacles or spectacle frames, for example measured as a relative distance in mm to a reference position;

[0063] - a distance between the lenses, e.g. measured in mm (see DIN EN ISO 8624:2020-11 , section 3.1 .6);

[0064] - in the case of temple-free spectacle frames, a distance between the lenses and / or a length of a bridge, in particular a flexible one, between the lenses, for example measured in mm. For example, an inclination angle and / or a frame lens angle of a spectacle frame, e.g. a customized model spectacle frame, can influence the positioning of the respective spectacle frame relative to the eyes of a spectacle wearer in the individual wearing position and thus have a direct impact on the optical quality of the optical correction achieved by a corresponding pair of spectacles. Furthermore, a distance between the lenses can, for example, influence the pupil distance for the optical corrective effect of spectacles and thus likewise influence the optical quality.For example, the shape of the temple tips can influence the ergonomic wearing behavior of a particular spectacle frame in the individual wearing position, and thus have a direct impact on meeting the ergonomic needs of a spectacle wearer. Thus, by determining and / or considering the adjustment parameters, both the quality of the optical correction effect of a spectacle frame or pair of spectacles, as well as the fit of the spectacle frame or pair of spectacles, can be efficiently improved.

[0065] However, the adjustment parameters are not limited to the examples above and can therefore include more, fewer, and / or different parameters. Examples of other possible parameters can be found, for example, in the 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.

[0066] The fitting parameters can, if necessary, be determined for a left and / or a right side of the fitted physical model frame. For example, a temple length to the nose can be determined for the left side or a left temple of the fitted physical model frame and / or for the right side or a right temple of the fitted physical model frame.

[0067] Preferably, the adjustment parameters may include at least an absolute

[0068] Adaptation parameters can include parameters whose value is determined by means of an absolute measurement of the second shape or of the adapted physical model spectacle frame. An absolute measurement can be understood in particular as a measurement of an overall value of a physical quantity, in particular of a spectacle frame, for example a total temple length of the adapted physical model spectacle frame and / or an angle. In particular, such absolute adaptation parameters can be used to define the second shape without information about the first shape. Furthermore, such absolute adaptation parameters can be used to define at least one spatial difference between the second shape and the first shape, for example by comparing it with the first shape. Furthermore, such absolute adaptation parameters can simplify the subsequent manufacture of a spectacle frame taking the adaptation parameters into account.

[0069] The adjustment parameters can preferably comprise at least one relative adjustment parameter, the value of which is determined by means of a relative measurement based on the first shape and the second shape. A relative measurement can be understood here, for example, as a comparison measurement, e.g. a difference measurement, of a predetermined value or a measured value of the first shape and a measured value of the second shape. For example, a relative adjustment parameter can be a shortening or lengthening of a temple length to the bow by a specific length value, e.g. by 0.5 cm, which is determined based on a difference between a measured or predetermined temple length to the bow of the first shape and a measured temple length to the bow of the second shape.By means of such relative adjustment parameters, in particular at least one spatial difference between the first shape and the second shape can be easily quantified, wherein relative adjustment parameters can preferably be specified, for example, as direct work instructions in a subsequent production of a spectacle frame taking the adjustment parameters into account. Furthermore, such relative adjustment parameters can reduce a set of adjustment parameters, wherein, for example, relative adjustment parameters with, for example, the value "0" can be sorted out and / or removed and / or discarded. Furthermore, the use of relative adjustment parameters enables a simple transfer of adjustment parameters between spectacle frames, for example, between an adjusted physical model spectacle frame and an output spectacle frame blank, which differ slightly in their shape or geometry (e.g.With such different frames, the temple length to the nose can differ for the same head shape or for the same wearer, for example due to different temple thicknesses and / or frame lens angles).

[0070] In particular, at least one absolute adaptation parameter can be designed to be convertible into a relative adaptation parameter and vice versa if the first form is known.

[0071] Preferably, the adjustment parameters can comprise at least one complex adjustment parameter. A complex adjustment parameter can, in particular, comprise, for example, a geometric shape and / or a parameterized curve. An exemplary complex adjustment parameter can, in particular, be a shape of a temple and / or a shape of a temple end.

[0072] Preferably, the adaptation parameters may comprise at least one absolute adaptation parameter and / or at least one relative adaptation parameter and / or at least one complex adaptation parameter.

[0073] In particular, it can be specified for each adjustment parameter whether the corresponding adjustment parameter is or can be determined as an absolute adjustment parameter and / or as a relative adjustment parameter and / or as a complex adjustment parameter. Furthermore, it can be specified for each adjustment parameter under which conditions the corresponding adjustment parameter is or can be determined as an absolute adjustment parameter and / or as a relative adjustment parameter and / or as a complex adjustment parameter. These conditions can include, for example, a respectively applicable measuring method and / or a respectively usable measuring device and / or knowledge of the first shape and / or knowledge of the physical model spectacle frame, but are not limited thereto. Thus, for example,For one or more adjustment parameters, it can be specified that these adjustment parameters can be determined as absolute adjustment parameters if the first shape and / or the physical model spectacle frame is unknown. For example, for an adjustment parameter "frame lens angle", determination as an absolute adjustment parameter by means of a video centering device and / or an image recognition unit can be specified, whereby knowledge of the physical model spectacle frame and / or the first shape is not necessary for this. Furthermore, if the physical model spectacle frame and / or at least one adjustment element has at least one measuring scale, determination of at least one corresponding adjustment parameter as a relative adjustment parameter by means of the at least one measuring scale can be specified.

[0074] Furthermore, the fitting parameters can include at least an identification of the physical model spectacle frame and / or an identification of the first shape. In particular, such identifications can facilitate reference to the physical model spectacle frame and / or the first shape, for example, if a corresponding first shape data set is stored or filed in at least one database. Furthermore, sending or shipping the fitted physical model spectacle frame, e.g., to a corresponding spectacle frame manufacturer, can thus advantageously be dispensed with.

[0075] In particular, the physical model spectacle frame can be adapted to the wearer at at least one adaptation point of the physical model spectacle frame. The at least one adaptation point can in particular comprise or be at least a predetermined set of adaptation points. The at least one adaptation point can in particular be at least one point or region of the physical model spectacle frame in which the physical model spectacle frame is adapted to the wearer, for example by deformation. In particular, the determination of adaptation parameters can comprise determining adaptation parameters at the at least one adaptation point. For example, at least one adaptation parameter can be determined at each adaptation point.In this case, a first adjustment parameter can be determined at a first adjustment point, for example by taking an image of the first adjustment point, independently of a second adjustment parameter being determined at a second adjustment point, for example by taking an image of the second adjustment point. In particular, this can enable a local determination of adjustment parameters. For example, at least one adjustment parameter can thus be determined based on an image of a temple end without having to capture an image of the entire temple. Alternatively or additionally, a determination of two or more adjustment parameters at two or more adjustment points can include taking an image of the two or more adjustment points.

[0076] The at least one adjustment point can, for example, comprise an end point and / or an end section of a temple of the physical model spectacle frame. The end point of the temple can, in particular, be a point along the temple that is furthest away from the lenses or from an insertion section of the physical model spectacle frame into which lenses can be inserted into the physical model spectacle frame. The end section of the temple can be a section of the temple that extends along the temple from the end point of the temple over a maximum of approximately 50%, preferably a maximum of approximately 40%, more preferably a maximum of approximately 30% of the length of the temple.

[0077] In particular, such an adaptation of the physical model spectacle frame at the at least one adaptation point can enable simplified adaptation and simplified determination of the corresponding adaptation parameters.

[0078] In particular, the first measuring device can have at least one camera for recording one or more images, in particular a series of images, of the adjusted physical model spectacle frame. The at least one camera can in particular be designed to record at least one 2D image of the adjusted physical model spectacle frame. Alternatively or additionally, the at least one camera can be designed to record at least one 3D image of the adjusted physical model spectacle frame, for example by means of a time-of-flight (TOF) image and / or a structured light image. The first measuring device can further be designed to determine the adjustment parameters from the one or more images by means of image recognition. In particular, the first measuring device can comprise an image recognition unit, wherein the image recognition unit is designed to determine the adjustment parameters from the one or more images by means of image recognition.Additionally or alternatively, the first measuring device can be configured to transmit the one or more images to an external image recognition unit in order to determine the adjustment parameters from the one or more images using image recognition. In particular, the at least one camera can be configured as a video centering device, e.g., the Rodenstock ImpressionlST®. For example, the at least one camera can be configured to read or quantify a respective initial state and / or final state of at least one adjustment element on a respective measuring scale.

[0079] In particular, this makes it possible to provide a particularly simple, optical determination of the adjustment parameters. Furthermore, conventional camera systems, such as those built into mobile phones or laptop computers, can also be used to determine the adjustment parameters. This also allows the use of existing camera systems without the need for additional measuring devices.

[0080] In particular, the first measuring device can have at least one 3D scanner unit, wherein the 3D scanner unit is configured to determine the adjustment parameters. The at least one 3D scanner unit can be configured, in particular, to determine the adjustment parameters by optically scanning or scanning the adjusted physical model spectacle frame. In particular, the 3D scanner unit can be configured to generate a digital 3D model of the adjusted physical model spectacle frame, wherein the first measuring device is configured to determine the adjustment parameters based on the 3D model. For example, the 3D scanner unit can be configured as a LIDAR unit.

[0081] In particular, this enables particularly precise determination of the fitting parameters. Furthermore, both the fitting parameters and the determined 3D model of the fitted physical spectacle frame can be provided, thus simplifying, for example, quality control for customized spectacles.

[0082] In particular, the first measuring device may comprise at least one tactile detection unit, wherein the at least one tactile detection unit is designed to determine the adaptation parameters.

[0083] The at least one tactile detection unit can in particular have a template element. The template element can be designed so that it can be applied, e.g. placed, to the adapted physical model spectacle frame in order to determine at least one adaptation parameter by a comparison between the template element and a correspondingly applied adapted physical model spectacle frame. In particular, the template element can be designed so that it can be applied, e.g. placed, to the adapted physical model spectacle frame manually by a user and / or automatically by the tactile detection unit. For example, the template element can be designed as a frame lens angle template element and / or comprise such a frame lens angle template element, wherein the frame lens angle template element is designed to determine a frame lens angle. The at least one tactile detection unit orHowever, the template element is not limited to such a lens angle template element, but may comprise other and / or multiple template elements. For example, the at least one template element may alternatively or additionally be and / or include an inclination angle template element.

[0084] The at least one tactile detection unit can, in particular, comprise a caliper element, e.g., an automated caliper. The tactile detection unit can be designed to automatically determine at least one adjustment parameter, e.g., a bridge width, using the caliper element. The caliper element can, for example, be at least partially manually operable and / or at least partially automated.

[0085] In particular, the first measuring device can be designed to output the determined adjustment parameters to a user, e.g. to display them on a display, and / or to digitally record and forward the determined adjustment parameters, e.g. to a manufacturing facility for producing an adjusted output spectacle frame.

[0086] Method for producing a customized dispensing spectacle frame for a spectacle wearer

[0087] One aspect relates to a method for producing a customized dispensing spectacle frame for a spectacle wearer. The customized dispensing spectacle frame can be understood as the spectacle frame that is handed over to the spectacle wearer for intended wear. In particular, the customized dispensing spectacle frame can be designed with or without corresponding lenses.

[0088] The method for producing the customized output spectacle frame comprises, in particular, determining fitting parameters for a customized physical model spectacle frame according to a method described herein for determining fitting parameters for a customized physical model spectacle frame for a spectacle wearer. In particular, the method for producing the customized output spectacle frame can comprise any combination of features described herein for the method for determining fitting parameters.

[0089] The method for producing the customized output spectacle frame further comprises producing the customized output spectacle frame taking into account the determined fitting parameters such that the customized output spectacle frame substantially has the second shape. Within the scope of the present disclosure, "substantially" is to be understood in particular as encompassing conventional, manufacturing-related, and / or environmentally-related deviations, unless otherwise defined in the individual case. Such conventional, manufacturing-related, and / or environmentally-related deviations can, in particular, comprise relative deviations of a maximum of approximately 20%, preferably a maximum of approximately 10%, more preferably a maximum of approximately 5%.Furthermore, conventional, manufacturing-related and / or environmentally-related deviations may include absolute deviations of, for example, a maximum of about 2 mm, preferably a maximum of about 1 mm, more preferably a maximum of about 0.1 mm, and / or, for example, a maximum of about 2°, preferably a maximum of about 1°, more preferably a maximum of about 0.1°.

[0090] The method for producing the customized output spectacle frame is not limited to a specific manufacturing method for the customized output spectacle frame. Rather, it is known to those skilled in the art that a variety of manufacturing methods can be used for the production of spectacle frames, and thus also for the customized output spectacle frame, e.g., casting methods, injection molding methods, 3D printing methods, and / or cutting methods.

[0091] In particular, this makes it possible to dispense with a further readjustment of the adjusted issue spectacle frame, for example during handover of the spectacle frame to the wearer, since this already essentially has the second shape. This means that the wearer can be provided with a fully individualized and / or biometrically adjusted issue spectacle frame. This can, in particular, avoid differences in the adjustment of the spectacle frame between an original, first adjustment and a final adjustment. This also enables further reorders of additional adjusted issue spectacle frames without the need for further adjustments, e.g. by an optician.

[0092] Preferably, the method for producing the customized output spectacle frame further comprises determining centering data for the customized physical model spectacle frame for the spectacle wearer. In particular, the centering data can include at least an interpupillary distance, a deflection angle, a viewing height, a pupil distance (see DIN EN ISO 13666:2019-12, Section 3.2.28), a corneal vertex distance (see DIN EN ISO 13666:2019-12, Section 3.2.40), a frame lens angle (see DIN EN ISO 8624:2020-11, Section 3.2.13), a forward inclination of the customized physical model spectacle frame (see DIN EN ISO 13666:2019-12, Section 3.2.37), and / or an eye rotation point. In particular, the centering data can be determined or measured using a centering data measuring device. An example of a centration data measuring device that allows particularly efficient and accurate determination of centration data is the Rodenstock ImpressionlST®.

[0093] Additionally or alternatively, the method for determining fitting parameters or the determination of the fitting parameters can also include the step of determining centering data for the adjusted physical model spectacle frame for the spectacle wearer. In particular, one or more data points of the determined centering data, e.g., a determined frame lens angle, can be adopted or determined as a fitting parameter.

[0094] Preferably, the method for producing the customized output spectacle frame further comprises producing spectacle lenses taking the centration data into account. The production of the spectacle lenses can, in particular, comprise calculating the spectacle lenses taking the centration data into account. An example of calculating the spectacle lenses taking the centration data into account is described in Dipl.-Ing. (FH) Georg Esser, PD Dr. Dietmar Uttenweiler: "The Performance of Individual Progressive Lenses," DOZ 12 / 2005, page 38. The production of the spectacle lenses can, for example, further comprise manufacturing the spectacle lenses and / or edging the spectacle lenses.

[0095] Preferably, the method for producing the customized output spectacle frame further comprises inserting the spectacle lenses into the customized output spectacle frame.

[0096] Furthermore, it was recognized within the scope of the present invention that inserting spectacle lenses into a spectacle frame, such as the customized output spectacle frame, is accompanied by physical stresses on the corresponding spectacle frame, which stresses can lead to a change in the adjustment of the spectacle frame. Therefore, after inserting the spectacle lenses, the method for producing the customized output spectacle frame can comprise adjusting the customized spectacle frame with inserted spectacle lenses such that the customized spectacle frame essentially has the second shape after inserting the spectacle lenses.

[0097] However, the method is not limited to this. Rather, the lenses can also be inserted into an output spectacle frame blank (as described below, for example). In particular, the lenses can be inserted into the output spectacle frame blank before and / or after a mold of the output spectacle frame blank has been adjusted, taking the adjustment parameters into account.

[0098] In particular, it was recognized within the scope of the present invention that differences between the adapted physical model spectacle frame and the adapted output spectacle frame can have a significant, undesired influence on the corrective effect of the customized spectacles, since centering data for the adapted physical model spectacle frame can also be incorporated into the calculation of the spectacle lenses. In particular, centering data between the adapted physical model spectacle frame and the adapted output spectacle frame can differ from one another due to these differences, which has an influence on the correspondingly calculated spectacle lenses. By producing the adapted output spectacle frame taking into account the determined adaptation parameters in such a way that the adapted output spectacle frame essentially has the second shape, it is thus possible to minimize or eliminate precisely such differences.can be avoided, and thus an optimal correction can be achieved for the spectacle wearer. "Essentially" in this context can preferably be understood as additionally encompassing further tolerances. In other words, the method for producing the adapted output spectacle frame comprises, for example, producing the adapted output spectacle frame taking into account the determined adaptation parameters such that the adapted output spectacle frame has the second shape within further tolerances or taking into account the further tolerances.

[0099] The additional tolerances can, for example, include quality tolerances. Quality tolerances can be understood as tolerances that influence the optical quality of the corrective effect, for example due to changes in the vertex distance between the corneas. The quality tolerances can be particularly dependent on the corrective effect of the spectacles, in the same way that errors in the determination of the centration data affect the optical quality of the corrective effect. For example, an error in the adjustment of the temple length to the nose (e.g. 1 mm too long) during the manufacture of the customized output spectacle frame can have a direct impact on the fit of the customized output spectacle frame on the nose, which, for example, changes the vertex distance by a similar amount and the customized output spectacle frame can also slip slightly downwards along the nose of the wearer. Furthermore, for exampleAn error in adjusting the frame lens angle, the bridge width, and / or the inclination angle can affect the pupil distance and / or the forward tilt. This can, for example, result in the centration no longer being correct. The quality tolerances can be selected to define a maximum acceptable deviation from the second form. In particular, the individual refraction data of the respective wearer can also be taken into account when determining the quality tolerances. As a reference value for the quality tolerances, for example, a corneal vertex distance of approximately 13 mm, a pupil distance of approximately 64 mm, a forward tilt of approximately 9 degrees, and / or a frame lens angle of approximately 5 degrees can be used.

[0100] The further tolerances can also include determination tolerances for determining the centering data. In particular, the determination tolerances can be taken into account when determining the centering data. The determination tolerances can in particular be selected in order to define a maximum acceptable inaccuracy or a maximum acceptable measurement error or determination error when determining the centering data. For example, the determination tolerances can include frame disc angle tolerances, wherein the frame disc angle can be determined, for example, with an accuracy or frame disc angle tolerance of approximately 0.5° to approximately 1°, for example using a video centering device. For example, the determination tolerances can include inclination angle tolerances, wherein the inclination angle can be determined, for example, with an accuracy or inclination angle tolerance of approximatelyapproximately 1°, for example, using a template or a template element or an inclination angle template element. For example, the determination tolerances can include bracket length-to-bow tolerances, whereby the bracket length to the bow can be determined, for example, with an accuracy or bracket length-to-bow tolerance of approximately 1 mm.

[0101] In particular, by taking into account at least the quality tolerances and the determination tolerances, a particularly good overall optical performance of the adjusted output spectacle frame or of the spectacles handed out to the customer can be achieved, since the overall optical performance can be particularly dependent on at least both the quality of the centration data determination and the quality of the adjusted output spectacle frame. The additional tolerances can, for example, include wearer-specific tolerances. Wearer-specific tolerances can, for example, be understood as tolerances beyond which the wearer perceives the adjusted output spectacle frame as no longer equivalent to the adjusted physical model spectacle frame and, for example,could require a different, more precise adjustment from the optician (for example, because the adjusted output frame on the nose is uncomfortable for the wearer and / or causes pressure points due to an incorrectly transferred adjusted temple length to the nose).

[0102] Furthermore, the additional tolerances can specify one or more corresponding tolerance intervals for each of the determined fitting parameters. For one or more of the fitting parameters, one or more quality tolerances, one or more determination tolerances, and / or one or more wearer-specific tolerances can also be specified. For example, an incorrect frame lens angle can not only directly affect the optical correction effect, but can also cause a different offset from the nose piece to the front temple ends, for example, by affecting the length of the temples.

[0103] Preferably, the method for producing the customized output spectacle frame further comprises determining individual, in particular objective and / or subjective, refraction data of the wearer, wherein the individual refraction data are further taken into account during the production of the spectacle lenses. Thus, it is possible to produce the customized output spectacle frame taking into account the adjustment parameters, the centration data, and / or the individual refraction data, in order to thus provide an optimized customized output spectacle frame. In particular, the individual refraction data can be determined or measured using a refraction data measuring device. An example of a refraction data measuring device that allows particularly efficient and precise determination of the individual refraction data is the Rodenstock DNEye® scanner.

[0104] Preferably, the method for producing the customized output spectacle frame further comprises determining individual parameters of the spectacle wearer, wherein the determined individual parameters are further taken into account during the production of the spectacle lenses. The individual parameters of the spectacle wearer can, for example, include one or more of the following parameters: pupil distance, corneal vertex distance, centering height, forward tilt, and / or frame lens angle.

[0105] In particular, the individual refraction data, the centration data, the fitting parameters and / or the individual parameters can be stored digitally and thus be reusable, e.g. for re-ordering of further fitted spectacle frames.

[0106] Preferably, the production of the customized output spectacle frame comprises 3D printing the customized output spectacle frame taking into account the determined adaptation parameters. In particular, the 3D printing can be designed to produce the customized output spectacle frame taking into account the determined adaptation parameters, so that the 3D-printed, customized output spectacle frame essentially has the second shape. This makes it possible, in particular, to already take the adaptation parameters into account during the production of the customized output spectacle frame, thereby eliminating the need for subsequent adaptation. Furthermore, the use of 3D printing enables, on the one hand, the production of the customized output spectacle frame at essentially any location, provided that a 3D printing device is available.Furthermore, this can also make it possible to produce the customized output spectacle frame essentially immediately after the adjustment parameters have been determined. For example, the desired customized output spectacle frame could be produced on-site following the adjustment parameters have been determined, e.g., at the optician's and / or during the first visit to the optician. Alternatively, the production of the customized output spectacle frame can comprise milling the customized output spectacle frame from a material blank, e.g., from wood, taking into account the determined adjustment parameters. Alternatively, the production of the customized output spectacle frame can comprise casting the customized output spectacle frame, e.g., in an adaptable mold (e.g., for carbon fiber (CFRP) frames), taking into account the determined adjustment parameters.

[0107] Furthermore, the production of the adapted output spectacle frame can comprise providing an output spectacle frame blank, wherein the output spectacle frame blank has a shape different from the second shape. The output spectacle frame blank can in particular be a spectacle frame whose shape is designed to be adaptable. The production of the adapted output spectacle frame can further comprise adapting the shape of the output spectacle frame blank taking into account the determined adaptation parameters for producing the adapted output spectacle frame. The adapting of the shape of the output spectacle frame blank can in particular at least partially comprise manually adapting the shape of the output spectacle frame blank, e.g. manually bending the output spectacle frame blank.Alternatively or additionally, the adjustment of the shape of the output spectacle frame blank may at least partially comprise a mechanical adjustment of the shape of the output spectacle frame blank, e.g., bending the output spectacle frame blank by means of an automatic bending machine.

[0108] This makes it particularly easy to produce the customized output spectacle frame.

[0109] In particular, the output spectacle frame blank can essentially have the first shape. This makes it particularly easy to take the adjustment parameters into account when manufacturing the adjusted output spectacle frame, since these already define at least one spatial difference between the first shape and the second shape.

[0110] In particular, the output spectacle frame blank may have a third shape, wherein the third shape is substantially different from the first shape, wherein, in particular, the third shape and the first shape have substantially the same geometry. In other words, the output spectacle frame blank and the physical model spectacle frame may differ from each other, while having substantially the same geometry.

[0111] Two spectacle frames can have the same geometry if the contact points of the respective spectacle frames with the wearer's head are the same and / or the weight and / or weight distribution of the respective spectacle frames differ insignificantly.

[0112] Thus, for example, two spectacle frames can have essentially the same geometry, but differ from one another, for example in their color and / or in their plastic decorations and / or in their respective lens shapes. Furthermore, for example, two spectacle frames could have essentially the same geometry, but differ from one another, for example in their material composition. For example, the physical model spectacle frame could be made of an inferior and / or bendable material, e.g. a metal alloy, whereas the output spectacle frame blank is made of a superior and / or more robust or rigid material, e.g. a gold and / or platinum alloy. Alternatively or additionally, for example, the physical model spectacle frame could have inferior decorations and / or decorative stones, whereas the output spectacle frame blank could have superior decorations and / or decorative stones or gemstones.This allows, for example, for simplified fitting of physical model frames. Furthermore, an optician no longer needs to keep valuable physical model frames in stock.

[0113] Preferably, the method comprises producing the adapted output spectacle frame taking into account the determined adaptation parameters such that the adapted output spectacle frame substantially has the second shape, wherein the adapted output spectacle frame substantially has the same geometry as the adapted physical model spectacle frame.

[0114] In particular, this can make it possible, on the one hand, for the physical model spectacle frame to at least not completely match a model spectacle frame desired by the wearer. This makes it possible to minimize the quantity or assortment of model spectacle frames from which the wearer can select a desired model spectacle frame. In particular, this enables a grouping of spectacle frames, e.g., a range of an optician and / or frame manufacturer, into fitting categories. Each fitting category can be assigned at least one spectacle frame and / or each spectacle frame can be assigned to at least one fitting category. All spectacle frames assigned to a respective fitting category can, in particular, have essentially the same geometry.

[0115] In addition, the determined fitting parameters can also be transferred or applied to output spectacle frames and / or output spectacle frame blanks which, while having essentially the same geometry, differ in shape from the physical model spectacle frame or from the first shape. This means that a large number of differently shaped output spectacle frames and / or output spectacle frame blanks can be fitted taking into account the same determined fitting parameters. This means, for example, that a respective physical model spectacle frame can be provided for each fitting category, which enables the optician, for example, to offer a large selection of fitted output spectacle frames without having to have a separate spectacle frame available for determining the fitting parameters for each spectacle frame model, since the fitting parameters can be transferred to each model from a fitting category.

[0116] The method for producing the customized output spectacle frame can preferably further comprise checking the customized output spectacle frame. The checking can in particular comprise comparing a shape of the customized output spectacle frame with the fitting parameters and / or the second shape. The checking can in particular comprise determining the shape of the customized output spectacle frame, preferably by means of the first measuring device. The shape of the customized output spectacle frame can be determined as a third shape data set, wherein the checking can comprise comparing the first and / or second shape data set with the third shape data set.

[0117] This enables, in particular, efficient and precise quality control of the adjusted output spectacle frame. Furthermore, by determining the shape of the adjusted output spectacle frame using the first measuring device, the provision of additional measuring devices can be avoided, and, due to the use of the first measuring device to determine the adjustment parameters and / or the second shape and the shape of the adjusted output spectacle frame, particularly precise quality control can be achieved.

[0118] In particular, the customized physical model eyeglass frame and the customized output eyeglass frame may be physically the same eyeglass frame.

[0119] The method for producing the customized initial spectacle frame can preferably further comprise producing at least one customized follow-up spectacle frame, for example, for a second pair of spectacles for the wearer, taking into account the determined adjustment parameters. In particular, this enables a reorder of a follow-up spectacle frame without having to determine adjustment parameters again. This also enables, in particular, a completely digital ordering process for the follow-up spectacle frame, without the need for a repeat visit to an optician, for example. This is particularly advantageous for spectacle wearers, as long as their individual refraction data remains essentially unchanged.

[0120] Embodiment 1 of a method for producing the customized output spectacle frame

[0121] According to a first embodiment, a method for producing a customized output spectacle frame for a spectacle wearer may comprise at least the following steps:

[0122] Providing a physical model eyeglass frame, the physical model eyeglass frame having a first shape;

[0123] Creating the customized physical model eyeglass frame by adjusting the physical model eyeglass frame to the wearer, the customized physical model eyeglass frame having a second shape that differs from the first shape, wherein adjusting comprises optimizing the frame lens angles to a face of the wearer;

[0124] Determining fitting parameters of the fitted physical model spectacle frame by means of a first measuring device, wherein the fitting parameters define at least one spatial difference between the first shape and the second shape, wherein the first shape and the second shape differ at least in the respective frame lens angles, wherein the first measuring device comprises at least one template element which is designed to measure the frame lens angles; and

[0125] Producing the adapted output spectacle frame taking into account the determined adaptation parameters such that the adapted output spectacle frame essentially has the second shape, comprising:

[0126] Providing an output spectacle frame blank, wherein the output spectacle frame blank has a shape different from the second shape; and

[0127] Adapting the shape of the output spectacle frame blank taking into account the determined adaptation parameters for producing the adapted output spectacle frame by at least adjusting the frame lens angles of the output spectacle frame blank by bending the output spectacle frame blank in an automatic bending machine.

[0128] In particular, appropriate spectacle lenses can be inserted into the output spectacle frame blank before adjusting the shape of the output spectacle frame blank.

[0129] Embodiment 2 for a method for producing the customized output spectacle frame

[0130] According to a second embodiment, a method for producing a customized output spectacle frame for a spectacle wearer may comprise at least the following steps:

[0131] Providing a physical model eyeglass frame, the physical model eyeglass frame having a first shape;

[0132] Creating the customized physical model eyeglass frame by adjusting the physical model eyeglass frame to the wearer, the customized physical model eyeglass frame having a second shape that differs from the first shape, the adjusting comprising adjusting an angle between a temple and temple end and adjusting the temple ends;

[0133] Determining fitting parameters of the fitted physical model spectacle frame by means of a first measuring device, wherein the fitting parameters define at least one spatial difference between the first shape and the second shape, wherein the first shape and the second shape differ at least in the respective angles and temple ends, wherein the first measuring device has at least one camera for recording one or more images of the fitted physical model spectacle frame, wherein the first measuring device is designed to determine the fitting parameters from the one or more images by means of image recognition, wherein the determining of fitting parameters further comprises:

[0134] Taking at least one picture of the fitted physical model spectacle frame,

[0135] Transmitting the at least one image to an image recognition unit, and

[0136] Determination, by means of the image recognition unit, of at least one parameterized curve of the shape of the bracket to determine the adjustment parameters.

[0137] The image recognition unit can in particular be comprised by the first measuring device or be designed as an external image recognition unit.

[0138] The method according to the second embodiment may further comprise producing the adapted output spectacle frame taking into account the determined adaptation parameters, wherein the adapted output spectacle frame substantially has the second shape.

[0139] The production of the customized output spectacle frame may further include:

[0140] Providing an output spectacle frame blank, wherein the output spectacle frame blank has a shape different from the second shape; and

[0141] Adjusting, preferably manually adjusting, the shape of the output spectacle frame blank taking into account the determined adjustment parameters or taking into account at least one parameterized curve.

[0142] Alternatively, the production of the customized output spectacle frame can comprise 3D printing the customized output spectacle frame, in particular at least one customized temple of the customized output spectacle frame, taking into account the determined adaptation parameters. In particular, at least the parameterized curve can be transferred or transmitted to a 3D printing system, wherein the 3D printing system is configured to print the customized output spectacle frame or the at least one customized temple.

[0143] System for determining adjustment parameters

[0144] One aspect relates to a system for determining fitting parameters for a fitted physical model spectacle frame for a spectacle wearer. The system comprises a physical model spectacle frame, wherein the physical model spectacle frame has a first shape. The system further comprises an adjustment device for generating the fitted physical model spectacle frame by adjusting the physical model spectacle frame to the spectacle wearer, wherein the fitted physical model spectacle frame has a second shape that differs from the first shape. The system also comprises a determination device for determining fitting parameters of the fitted physical model spectacle frame, wherein the fitting parameters specify at least one spatial difference between the first shape and the second shape.

[0145] The system for determining the adaptation parameters can, in particular, comprise any combination of the features described herein for the method for determining the adaptation parameters. In particular, the system for determining the adaptation parameters can comprise means and / or be designed to carry out a method for determining the adaptation parameters described herein.

[0146] System for producing a customized output spectacle frame for a spectacle wearer

[0147] One aspect relates to a system for producing a customized output spectacle frame for a spectacle wearer. The system for producing the customized output spectacle frame comprises a system described herein for determining fitting parameters for a customized physical model spectacle frame for the spectacle wearer. In particular, the system for producing the customized output spectacle frame can have any combination of features described herein for the system for determining the fitting parameters.

[0148] The system for producing the customized output spectacle frame further comprises a manufacturing device, wherein the manufacturing device is designed to produce the customized output spectacle frame taking into account the determined fitting parameters such that the customized output spectacle frame substantially has the second shape. The system for producing the customized output spectacle frame can in particular have any desired combination of the features described herein, in particular for the method for producing the customized output spectacle frame. In particular, the system for producing the customized output spectacle frame can have means and / or be designed to carry out a method described herein for producing the customized output spectacle frame.

[0149] The invention is described and explained in more detail below using exemplary embodiments shown in the figures. Individual features of the embodiments described in the figures can be combined in any desired manner by a person skilled in the art.

[0150] They show:

[0151] Figure 1A: a flowchart of an exemplary method for

[0152] Determining adjustment parameters;

[0153] Figure 1B: an exemplary method for manufacturing a customized output spectacle frame;

[0154] Figure 2: an exemplary system for producing a customized

[0155] Issue eyeglass frame;

[0156] Figure 3: an example of a conventional method for manufacturing a spectacle frame or spectacles;

[0157] Figure 4: an example of a method for producing an output

[0158] spectacle frame; and

[0159] Figure 5: another example of a method for producing a

[0160] Issue eyeglass frame.

[0161] Figure 1A shows a flowchart of an exemplary method 100 for determining fitting parameters for a customized physical model spectacle frame for a spectacle wearer. In particular, Figure 1A shows an exemplary sequence of steps 101 to 103. In a first step 101, the exemplary method 100 comprises providing an exemplary physical model spectacle frame. The exemplary physical model spectacle frame can be selected, in particular, from a plurality of available physical model spectacle frames from a range of model spectacle frames of an optician or an eyewear store. Furthermore, the exemplary physical model spectacle frame has a first shape.

[0162] In a further step 102, the method 100 comprises generating the customized physical model spectacle frame by adapting the physical model spectacle frame to the spectacle wearer, for example, to the spectacle wearer in an individual wearing position for the spectacle wearer. The customized physical model spectacle frame has a second shape that differs from the first shape.

[0163] In a subsequent step 103, the method 100 includes determining fitting parameters of the fitted physical model spectacle frame. The fitting parameters define at least one spatial difference, preferably at least each or all spatial differences, between the first shape and the second shape.

[0164] Figure 1B shows an exemplary method 200 for producing a customized output eyeglass frame for a wearer. In particular, Figure 1B illustrates an exemplary sequence of steps of method 200.

[0165] In a first step, the method 200 comprises, in particular, determining fitting parameters for a fitted physical model spectacle frame according to the method 100 of Figure 1A. In particular, the method 200 may comprise any combination of features described herein for the method 100.

[0166] In a further step 201, the method 200 comprises producing the adapted output spectacle frame taking into account the determined adaptation parameters such that the adapted output spectacle frame substantially has the second shape.

[0167] Figure 2 shows an exemplary system 2 for producing a customized output spectacle frame for a spectacle wearer.

[0168] The system 2 for producing the customized output spectacle frame comprises, in particular, an exemplary system 1 for determining fitting parameters for a customized physical model spectacle frame for a spectacle wearer. The system 1 for determining fitting parameters comprises, for example, a physical model spectacle frame 10, wherein the physical model spectacle frame 10 has a first shape.

[0169] The system 1 for determining fitting parameters further comprises a fitting device 20 for generating the fitted physical model spectacle frame by fitting the physical model spectacle frame 10 to the spectacle wearer, wherein the fitted physical model spectacle frame has a second shape which differs from the first shape.

[0170] The system 1 for determining fitting parameters further comprises a determination device 30 for determining fitting parameters of the fitted physical model spectacle frame, wherein the fitting parameters define at least one spatial difference between the first shape and the second shape.

[0171] The system 2 for producing the customized output spectacle frame further comprises a manufacturing device 40, wherein the manufacturing device 40 is designed to produce the customized output spectacle frame taking into account the determined fitting parameters such that the customized output spectacle frame substantially has the second shape.

[0172] Figure 3 shows an example of a conventional method 300 for producing a spectacle frame or a pair of spectacles, comprising in particular a conventional sequence of conventional method steps 301 to 307.

[0173] In a first step 301, a spectacle wearer can select a desired pair of spectacles or spectacle frames.

[0174] In a subsequent step 302, the desired spectacle frame is adjusted to the wearer by an optician.

[0175] Based on the adjusted spectacle frame, at least centering data of the adjusted spectacle frame are measured in a further step 303.

[0176] Furthermore, in a separate step 304, refraction data of the spectacle wearer can be measured.

[0177] Based on the centration data measured in step 303 and the refraction data measured in step 304, corresponding spectacle lenses are calculated and generated in a fifth step 305.

[0178] In a sixth step 306, the produced spectacle lenses can be inserted into a non-adapted spectacle frame.

[0179] An additional adjustment of the non-adjusted spectacle frame to the wearer is necessarily required as step 307, with the additional adjustment being carried out by the optician.

[0180] Steps 301 to 304 can be performed during a first visit to an optician. At least step 307 must be performed during a second visit to the optician, as the wearer must be present for this. Thus, at least two visits to the optician are mandatory for the conventional method 300. Furthermore, differences in the adjustments according to steps 302 and 307 can occur, which have a significant negative impact on the glasses or frames.

[0181] Figure 4 shows an example of a method 400 for producing an output spectacle frame according to the present disclosure, comprising in particular an exemplary sequence of method steps 401 to 408.

[0182] In a first step 401, a physical model spectacle frame is provided, for example by selection by a spectacle wearer, wherein the physical model spectacle frame has a first shape.

[0183] In a second step 402, a customized physical model spectacle frame is created by adapting the physical model spectacle frame to the spectacle wearer, wherein the customized physical model spectacle frame has a second shape which differs from the first shape.

[0184] In a further, third step 403, adjustment parameters of the physical model spectacle frame adjusted according to step 402 are determined, wherein the adjustment parameters define at least one spatial difference between the first shape and the second shape.

[0185] Furthermore, based on or using the model spectacle frame fitted according to step 402, centration data for the fitted physical model spectacle frame for the spectacle wearer are determined or measured in a fourth step 404. The centration data may include, for example, a pupil distance, a corneal vertex distance, a centration, a forward tilt, and / or a frame lens angle.

[0186] In a separate, fifth step 405, individual refraction data, in particular objective and / or subjective refraction data, of the spectacle wearer are determined. Step 405 can occur parallel to and / or substantially simultaneously with step 404. Alternatively, the individual refraction data, if already known, can be provided in step 405. Taking into account the centration data measured in step 404 and the refraction data measured in step 405, corresponding spectacle lenses are calculated and generated in a sixth step 406.

[0187] In a seventh step 407, an output spectacle frame blank can be provided, wherein the output spectacle frame blank has a shape different from the second shape. The spectacle lenses calculated and generated in step 406 can be inserted or ground into the output spectacle frame blank.

[0188] In an eighth step 408, the shape of the output spectacle frame blank can be adjusted taking into account the adjustment parameters determined in step 403 to produce the adjusted output spectacle frame.

[0189] Steps 406 to 408 can in particular be included in a step of producing the adapted output spectacle frame taking into account the determined adaptation parameters, wherein the adapted output spectacle frame essentially has the second shape.

[0190] In particular, steps 401 to 408 may comprise any combination of features as described herein.

[0191] Here, steps 401 to 405 can be performed during a first visit to an optician. A further visit to the optician can advantageously be omitted in the exemplary method 400, since the determined adjustment parameters can be used for this purpose, and the wearer's presence is not required. Furthermore, this also allows differences between the adjustments in steps 402 and 408 to be avoided.

[0192] Figure 5 shows a further example of a method 500 for producing an output eyeglass frame according to the present disclosure, comprising in particular an exemplary sequence of method steps 501 to 508.

[0193] In a first step 501, a physical model spectacle frame is provided, for example by selection by a spectacle wearer, wherein the physical model spectacle frame has a first shape.

[0194] In a second step 502, a customized physical model spectacle frame is created by adapting the physical model spectacle frame to the spectacle wearer, wherein the customized physical model spectacle frame has a second shape which differs from the first shape.

[0195] In a further, third step 503, adjustment parameters of the physical model spectacle frame adjusted according to step 502 are determined, wherein the adjustment parameters define at least one spatial difference between the first shape and the second shape.

[0196] Furthermore, based on or using the model spectacle frame fitted according to step 502, centration data for the fitted physical model spectacle frame for the spectacle wearer are determined or measured in a fourth step 504. The centration data may include, for example, a pupil distance, a corneal vertex distance, a centration, a forward tilt, and / or a frame lens angle.

[0197] In a separate, fifth step 505, individual refraction data, in particular objective and / or subjective refraction data, of the spectacle wearer are determined. Step 505 can be performed parallel to and / or substantially simultaneously with step 504. Alternatively, the individual refraction data, if already known, can be provided in step 505.

[0198] In particular, steps 501 to 505 can essentially correspond to steps 401 to 405, as shown in Figure 4. In a sixth step 506, an adapted output spectacle frame can be produced taking into account the determined adaptation parameters. For example, the adapted output spectacle frame can be produced by 3D printing taking into account the determined adaptation parameters. However, the sixth step 506 is not limited to such 3D printing. Rather, a variety of manufacturing methods can be used to produce the adapted output spectacle frame taking into account the determined adaptation parameters. Further examples of this are casting or milling the adapted output spectacle frame. The adapted output spectacle frame produced by the sixth step 506 can thus essentially have the second shape.

[0199] Taking into account the centration data measured in step 504 and the refraction data measured in step 505, corresponding spectacle lenses are calculated and generated in a seventh step 507.

[0200] The sixth step 506 and the seventh step 507 can be performed separately and / or independently of each other, thereby significantly increasing the efficiency and flexibility of the method.

[0201] In an eighth step 508, the spectacle lenses calculated and generated in step 507 can be inserted or ground into the adapted output spectacle frame produced in step 506.

[0202] In particular, steps 501 to 508 may comprise any combination of features as described herein.

[0203] The present invention is not limited to the exemplary embodiments described herein and / or shown in the figures. In particular, a method for determining fitting parameters for a customized physical model spectacle frame, a method for manufacturing a customized output spectacle frame, a system for determining fitting parameters for a customized physical model spectacle frame, and a system for manufacturing a customized output spectacle frame may each comprise any combination of the features disclosed herein.

[0204] List of reference symbols

[0205] System for determining adjustment parameters

[0206] System for producing a customized output

[0207] Eyeglass frame physical model eyeglass frame

[0208] Adjustment device

[0209] Investigation device

[0210] Manufacturing facility

[0211] Method for determining adjustment parameters-103 process steps

[0212] Method for producing an output spectacle frame

[0213] Process step

[0214] Conventional process -307 Conventional process steps

[0215] Method for producing an output spectacle frame-408 process steps

[0216] Method for producing an output spectacle frame-508 process steps

Claims

Patent claims 1. A method (100) for determining fitting parameters for a fitted physical model spectacle frame for a spectacle wearer, comprising: Providing a physical model eyeglass frame (10), the physical model eyeglass frame (10) having a first shape; Creating the customized physical model spectacle frame by adapting the physical model spectacle frame (10) to the spectacle wearer, wherein the customized physical model spectacle frame has a second shape which is different from the first shape; Determining fitting parameters of the fitted physical model spectacle frame, wherein the fitting parameters specify at least a spatial difference between the first shape and the second shape.

2. The method (100) according to claim 1, wherein the first shape is specified or determined as a first shape data set, 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. Method (100) according to one of the preceding claims, wherein the adaptation parameters comprise at least one or more of the following parameters: - one bow length to the bow; - a length of one temple end; - a total temple length; - an angle between the bow and the bow and one end of the bow; - a shape of the temple end; - a curvature of the left and / or right bracket in a horizontal direction; - an opening angle between a middle part of the spectacles and the left and / or right temple; - an inclination angle; - a lens angle; - a bridge angle between two nose pads of a spectacle frame; - a bridge height; - a bridge width; - a bridge model; - an adjustment of the nasal bridges; - a disc shape; - one slice size; - a position of at least one borehole.

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

5. Method (100) according to one of the preceding claims, wherein the adjustment parameters are determined by means of a first measuring device, wherein the first measuring device has at least one camera for recording one or more images of the adjusted physical model spectacle frame, wherein the first measuring device is designed to determine the adjustment parameters from the one or more images by means of image recognition; and / or wherein the first measuring device has at least one 3D scanner unit, wherein the 3D scanner unit is configured to determine the adjustment parameters; and / or wherein the first measuring device has at least one tactile detection unit, wherein the at least one tactile detection unit is configured to determine the adjustment parameters.

6. A method (200) for producing a customized output spectacle frame for a spectacle wearer, comprising: Determining fitting parameters for a fitted physical model spectacle frame according to the method (100) according to one of claims 1 to 5; Producing the adapted output spectacle frame taking into account the determined adaptation parameters such that the adapted output spectacle frame essentially has the second shape.

7. The method (200) of claim 6, further comprising: Determining centration data for the customized physical model spectacle frame for the wearer and / or determining individual refraction data of the wearer; Creating spectacle lenses taking into account the centration data and / or the individual refraction data.

8. The method (200) according to any one of claims 6 to 7, wherein the production of the customized output spectacle frame comprises 3D printing the customized output spectacle frame taking into account the determined fitting parameters; or wherein the production of the customized output spectacle frame comprises milling the customized output spectacle frame from a material blank taking into account the determined fitting parameters; or wherein the production of the customized output spectacle frame comprises casting the customized output spectacle frame taking into account the determined fitting parameters.

9. The method (200) according to any one of claims 6 to 7, wherein manufacturing the customized output eyeglass frame further comprises: Providing an output spectacle frame blank, wherein the output spectacle frame blank has a shape different from the second shape; and adjusting the shape of the output spectacle frame blank taking into account the determined adjustment parameters to produce the adjusted output spectacle frame.

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

11. The method (200) of any one of claims 6 to 10, further comprising checking the adjusted output eyeglass frame, wherein the checking comprises comparing a shape of the adjusted output eyeglass frame with the adjustment parameters and / or the second shape.

12. The method (200) according to any one of claims 6 to 11, further comprising: Manufacture at least one adapted follow-up issue spectacle frame taking into account the determined fitting parameters.

13. A system (1) for determining fitting parameters for a fitted physical model spectacle frame for a spectacle wearer, comprising: a physical model spectacle frame (10), wherein the physical model spectacle frame (10) has a first shape; a fitting device (20) for generating the fitted physical model spectacle frame by fitting the physical model spectacle frame (10) to the spectacle wearer, wherein the fitted physical model spectacle frame has a second shape which differs from the first shape; and a determining device (30) for determining fitting parameters of the fitted physical model spectacle frame, wherein the fitting parameters define at least one spatial difference between the first shape and the second shape.

14. A system (2) for producing a customized output spectacle frame for a spectacle wearer, comprising: a system (1) for determining fitting parameters for a customized physical model spectacle frame for a spectacle wearer according to claim 13; and a manufacturing device (40), wherein the manufacturing device (40) is configured to produce the customized output spectacle frame taking into account the determined fitting parameters such that the customized output spectacle frame substantially has the second shape.

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