Spectacle lens and method for producing a spectacle lens

Abstract

A spectacle lens, which is manufactured by additive manufacturing, includes interspersing first volume elements and second volume elements. The first and second volume elements are arranged on the grid points of a geometric grid to form a first sub-grid and a second sub-grid, respectively. The first sub-grid forms the first part of the spectacle lens having a dioptric effect for vision for a first object distance and the second sub-grid forms the second part of the spectacle lens having a dioptric effect for vision for a second object distance, which differs from the first object distance.

Claims

1. A method for producing a spectacle lens, the method comprising: arranging a plurality of first volume elements by additive manufacturing on grid points of a geometric grid to form a first partial grid, the plurality of first volume elements forming a first part of a spectacle lens having a dioptric power for vision at a first object distance; arranging a plurality of second volume elements by additive manufacturing on the grid points of the geometric grid to form a second partial grid, the plurality of second volume elements forming a second part of the spectacle lens having the dioptric power for vision at a second object distance that differs from the first object distance; and interspersing the plurality of first volume elements and the plurality of second volume elements during the additive manufacturing to arrange the first partial grid and the second partial grid penetrating each other, respectively.

2. The method as claimed in claim 1, further comprising: arranging the plurality of first volume elements and the plurality of second volume elements on a surface of a carrier during the additive manufacturing.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The disclosure will now be described with reference to the drawings wherein:

(2) FIG. 1 shows a first exemplary embodiment for the arrangement of two partial grids formed by volume elements of the first and second volume element groups, displaced within one another in penetrative fashion.

(3) FIG. 2 shows an exemplary embodiment for the arrangement of four partial grids formed by volume elements of the first, second, third, and fourth volume element groups, displaced within one another in penetrative fashion.

(4) FIG. 3 shows a second exemplary embodiment for the arrangement of two partial grids formed by volume elements of the first and second volume element groups, displaced within one another in penetrative fashion.

(5) FIG. 4 shows a third exemplary embodiment for the arrangement of two partial grids formed by volume elements of the first and second volume element groups, displaced within one another in penetrative fashion.

(6) FIG. 5A shows a fourth exemplary embodiment for the arrangement of the volume elements of two partial grids formed by these volume elements of the first and second volume element groups, displaced within one another in penetrative fashion.

(7) FIG. 5B shows a magnified illustration of in each case one of the first and second volume elements in FIG. 5A.

(8) FIG. 6 shows a schematic sketch of a first exemplary embodiment of a spectacle lens according to the disclosure in a plan view from the object side.

(9) FIG. 7 shows a schematic sketch of a second exemplary embodiment of a spectacle lens according to the disclosure in cross section.

(10) FIG. 8 shows a schematic sketch of a third exemplary embodiment of a spectacle lens according to the disclosure in cross section.

(11) FIG. 9 shows a schematic sketch of a fourth exemplary embodiment of a spectacle lens according to the disclosure in cross section.

(12) FIG. 10 shows a schematic sketch of a fifth exemplary embodiment of a spectacle lens according to the disclosure in cross section.

(13) FIG. 11 shows an exemplary embodiment of spectacles with a spectacle lens according to the disclosure.

DESCRIPTION OF EXEMPLARY EMBODIMENTS

(14) Explanations were given above that the spectacle lens according to the disclosure comprises at least two volume element groups. The two volume element groups, referred to as first and second volume element groups below, each comprise a plurality of corresponding volume elements. The volume elements of the first volume element group are referred to as first volume elements below; the volume elements of the second volume element group are referred to as second volume elements below.

(15) The first volume elements are arranged in the style of grid points of a geometric grid and form a first partial grid. Together, the volume elements of the first volume element group form a first part of the spectacle lens. Together, they define a region of the spectacle lens through which the spectacle wearer gazes in the case of intended use, the region having the dioptric power for vision at a first object distance.

(16) The second volume elements are likewise arranged in the style of grid points of a geometric grid and together form a second partial grid in their own right. Together, the volume elements of the second volume element group form a second part of the spectacle lens. Together, they define a region of the spectacle lens through which the spectacle wearer gazes in the case of intended use, the region having the dioptric power for vision at a second object distance, the second object distance deviating from the aforementioned first object distance that is set by the first partial grid formed by the volume elements of the first volume element group.

(17) The first partial grid and the second partial grid are arranged displaced within one another in penetrative fashion in each case. As a result, the regions of the spectacle lens that are defined by the two partial grids respectively formed from different volume elements and that are designed for different object distances geometrically coincide on a macroscopic level. This should be elucidated once again below on the basis of the figures.

(18) FIG. 1 shows a first exemplary embodiment for the arrangement of two partial grids formed by volume elements of the first and second volume element groups, displaced within one another in penetrative fashion. In the present exemplary embodiment, the first partial grid includes cuboid volume elements 1a, 1b, 1c . . . 1t, 1u, which are arranged like the white fields of a checkerboard. In the present exemplary embodiment, the second partial grid includes cuboid volume elements 2a, 2b, 2c . . . 2t, 2u, which are arranged like the black fields of a checkerboard. Each cuboid volume element 1a, 1b, 1c . . . 1t, 1u, 2a, 2b, 2c . . . 2t, 2u takes up the same amount of space, with edge lengths a.sub.1, a.sub.2, a.sub.3. The edge lengths a.sub.1, a.sub.2, a.sub.3 regularly lie in the range between 10 μm and 1 mm. The volumes of the cuboid volume elements 1a, 1b, 1c . . . 1t, 1u, 2a, 2b, 2c . . . 2t, 2u are then in the range between 1000 μm.sup.3 and 1 mm.sup.3.

(19) In the present exemplary embodiment, the first partial grid that is based on the cuboid volume elements 1a, 1b, 1c . . . 1t, 1u and the second partial grid that is based on the cuboid volume elements 2a, 2b, 2c . . . 2t, 2u have an identical shape. From a geometric point of view, the two partial grids are offset in relation to one another by the edge length a.sub.1 in the direction of a sheet row. Alternatively, it is also possible to say that the two partial grids are offset in relation to one another by the edge length a.sub.2 in a direction perpendicular to the direction of a sheet row. In this exemplary embodiment, both partial grids lie in one plane. In the present case, let the surface 3 visible in FIG. 1 be the surface facing the object in the case of an intended use of the spectacle lens, which is based on the structure shown in FIG. 1. Accordingly, the surface 4 that is not visible in FIG. 1 in that case is the surface facing the eye of the spectacle wearer in the case of an intended use of the spectacle lens. The object-side surface of a single volume element 1a, 1b, 1c . . . 1t, 1u, 2a, 2b, 2c . . . 2t, 2u, which in each case represents a plane surface in the present exemplary embodiment, lies between 100 μm.sup.2 and 1 mm.sup.2, taking into account the aforementioned size specifications.

(20) The part of the spectacle lens defined by the first partial grid is determined by the totality of the volumes of the cuboid volume elements 1a, 1b, 1c . . . 1t, 1u in the present exemplary embodiment. Expressed differently, the region of the spectacle lens defined by the first partial grid, which is designed for vision at a first object distance and through which the spectacle wearer gazes for the purposes of seeing an object arranged at this distance in focus in the case of intended use, is determined in the present exemplary embodiment by the totality of the object-side (and eye-side) surfaces of the cuboid volume elements 1a, 1b, 1c . . . 1t, 1u. According to the disclosure, this surface region is between 0.3 cm.sup.2 and 7 cm.sup.2, typically between 0.5 cm.sup.2 and 6 cm.sup.2, more typically between 0.8 cm.sup.2 and 5 cm.sup.2 and, finally, even more typically between 1 cm.sup.2 and 4 cm.sup.2.

(21) The part of the spectacle lens defined by the second partial grid is determined by the totality of the volumes of the cuboid volume elements 2a, 2b, 2c . . . 2t, 2u in the present exemplary embodiment. Expressed differently, the region of the spectacle lens defined by the second partial grid, which is designed for vision at a second object distance and through which the spectacle wearer gazes for the purposes of seeing an object arranged at this distance in focus in the case of intended use, is determined in the present exemplary embodiment by the totality of the object-side (and eye-side) surfaces of the cuboid volume elements 2a, 2b, 2c . . . 2t, 2u. According to the disclosure, this surface region is between 0.3 cm.sup.2 and 7 cm.sup.2, typically between 0.5 cm.sup.2 and 6 cm.sup.2, more typically between 0.8 cm.sup.2 and 5 cm.sup.2 and, finally, even more typically between 1 cm.sup.2 and 4 cm.sup.2.

(22) From a macroscopic point of view, the surface region defined by the first partial grid and the surface region defined by the second partial grid coincide, and so there is no macroscopic separation between the part of the spectacle lens designed for the first object distance and the part of the spectacle lens designed for the second object distance. In contrast to the conventional type of bifocal or varifocal lens that is designed for a presbyopic wearer, near and far part coincide from the macroscopic point of view.

(23) By way of example, WO 2015/102938 A1 describes in detail how such grid structures are produced. Thus, a 3D printer equipped with one or more processors receives a CAD model with data of, in the present exemplary embodiment, a single layer which comprises a multiplicity of volume elements. Thus, the data contain, for example, the information that the first volume elements 1a, 1b, 1c . . . 1t, 1u, specified above, should be manufactured from a first material with a first dielectric constant, corresponding to a first printer ink, and the information that the second volume elements 2a, 2b, 2c . . . 2t, 2u, specified above, should be manufactured from a second material with a second dielectric constant, corresponding to a second printer ink. From the data, the processor or processors of the 3D printer calculate the respective location at which the respective printer ink should be placed, the temperature and/or the UV light requirements and the corresponding times to cure the placed printer ink for the purposes of generating the respective volume element 1a, 1b, 1c . . . 1t, 1u, 2a, 2b, 2c . . . 2t, 2u.

(24) FIG. 2 shows a further exemplary embodiment for the arrangement of volume elements of partial grids, displaced within one another in penetrative fashion. In this exemplary embodiment, the overall grid is formed from four partial grids. The four partial grids comprise volume elements of the first, second, third, and fourth volume element groups. The first partial grid, which is based on the hexagonal volume elements 11a, 11b, 11c, 11d, the second partial grid, which is based in the hexagonal volume elements 12a, 12b, 12c, 12d, the third partial grid, which is based on the hexagonal volume elements 13a, 13b, and the fourth partial grid, which is based on the hexagonal volume elements 14a, 14b, have an identical shape in the present exemplary embodiment. The volumes of the hexagonal volume elements 11a, 11b, 11c, 11d, 12a, 12b, 12c, 12d, 13a, 13b, 14a, 14b are in the range of between 1000 μm.sup.3 and 1 mm.sup.3.

(25) The part of the spectacle lens defined by the first partial grid is determined by the totality of the volumes of the volume elements 11a, 11b, 11c, 11d in the present exemplary embodiment. Expressed differently, the region of the spectacle lens defined by the first partial grid, which is configured for vision at a first object distance and through which the spectacle wearer gazes for the purposes of seeing an object arranged at this distance in focus in the case of intended use, is determined in the present exemplary embodiment by the totality of the object-side (and eye-side) surfaces of the volume elements 11a, 11b, 11c, 11d. According to the disclosure, this surface region is between 0.3 cm.sup.2 and 7 cm.sup.2, typically between 0.5 cm.sup.2 and 6 cm.sup.2, more typically between 0.8 cm.sup.2 and 5 cm.sup.2 and, finally, even more typically between 1 cm.sup.2 and 4 cm.sup.2.

(26) The part of the spectacle lens defined by the second partial grid is determined by the totality of the volumes of the volume elements 12a, 12b, 12c, 12d in the present exemplary embodiment. Expressed differently, the region of the spectacle lens defined by the second partial grid, which is designed for vision at a second object distance and through which the spectacle wearer gazes for the purposes of seeing an object arranged at this distance in focus in the case of intended use, is determined in the present exemplary embodiment by the totality of the object-side (and eye-side) surfaces of the volume elements 12a, 12b, 12c, 12d. According to the disclosure, this surface region is between 0.3 cm.sup.2 and 7 cm.sup.2, typically between 0.5 cm.sup.2 and 6 cm.sup.2, more typically between 0.8 cm.sup.2 and 5 cm.sup.2 and, finally, even more typically between 1 cm.sup.2 and 4 cm.sup.2.

(27) The part of the spectacle lens defined by the third partial grid is determined by the totality of the volumes of the volume elements 13a, 13b in the present exemplary embodiment. Expressed differently, the region of the spectacle lens defined by the third partial grid, which is designed for vision at a third object distance and through which the spectacle wearer gazes for the purposes of seeing an object arranged at this distance in focus in the case of intended use, is determined in the present exemplary embodiment by the totality of the object-side (and eye-side) surfaces of the volume elements 13a, 13b. According to the disclosure, this surface region is between 0.3 cm.sup.2 and 7 cm.sup.2, typically between 0.5 cm.sup.2 and 6 cm.sup.2, more typically between 0.8 cm.sup.2 and 5 cm.sup.2 and, finally, even more typically between 1 cm.sup.2 and 4 cm.sup.2.

(28) The part of the spectacle lens defined by the fourth partial grid is determined by the totality of the volumes of the volume elements 14a, 14b in the present exemplary embodiment. Expressed differently, the region of the spectacle lens defined by the fourth partial grid, which is designed for vision at a fourth object distance and through which the spectacle wearer gazes for the purposes of seeing an object arranged at this distance in focus in the case of intended use, is determined in the present exemplary embodiment by the totality of the object-side (and eye-side) surfaces of the volume elements 14a, 14b. According to the disclosure, this surface region is between 0.3 cm.sup.2 and 7 cm.sup.2, typically between 0.5 cm.sup.2 and 6 cm.sup.2, more typically between 0.8 cm.sup.2 and 5 cm.sup.2 and, finally, even more typically between 1 cm.sup.2 and 4 cm.sup.2.

(29) From a macroscopic point of view, the surface region defined by the first partial grid, the surface region defined by the second partial grid, the surface region defined by the third partial grid, and the surface region defined by the fourth partial grid coincide, and so there is no macroscopic separation between the part of the spectacle lens designed for the first object distance, the part of the spectacle lens designed for the second object distance, the part of the spectacle lens designed for the third object distance, and the part of the spectacle lens designed for the fourth object distance.

(30) FIG. 3 shows a second exemplary embodiment for the arrangement of two partial grids formed by volume elements of the first and second volume element groups, displaced within one another in penetrative fashion. The first partial grid, which is based on the volume elements 21a, 21b, 21c, 21d . . . 21x, 21y, 21z, comprises a cylindrical volume element 21a and a plurality of ring-segment-shaped volume elements 21b, 21c, 21d, . . . 21x, 21y, 21z. The second partial grid only comprises a plurality of ring-segment-shaped volume elements 22a, 22b, 22y, 22z. Like the exemplary embodiments shown in FIGS. 2 and 3, all volume elements 21b, 21c, 21d, . . . 21x, 21y, 21z, 22a, 22b, 22y, 22z are arranged in one plane.

(31) FIG. 4 shows a third exemplary embodiment for the arrangement of two partial grids formed by volume elements of the first and second volume element groups, displaced within one another in penetrative fashion.

(32) In the present exemplary embodiment, the first partial grid that is based on the cuboid volume elements 1a, 1b, 1c . . . 1x, 1y, 1z and the second partial grid that is based on the cuboid volume elements 2a, 2b, 2c . . . 2y, 2z having an identical shape. Both partial grids represent a sequence of three-dimensional cubic structures, the respective volume elements 21b, 21c, 21d, . . . 21x, 21y, 21z, 22a, 22b, 22y, 22z of which are arranged adjacent to one another and within one another, penetrating one another in each case. Accordingly, the final grid comprises a plurality of layers of the type shown in FIG. 1. In the present case, let the surface 3 visible in FIG. 1 be the surface facing the object in the case of an intended use of the spectacle lens, which is based on the structure shown in FIG. 1. Accordingly, the surface 4 that is not visible in FIG. 1 in that case is the surface facing the eye of the spectacle wearer in the case of an intended use of the spectacle lens.

(33) The part of the spectacle lens defined by the first partial grid is determined by the totality of the volumes of the cuboid volume elements 1a, 1b, 1c . . . 1x, 1y, 1z in the present exemplary embodiment. Expressed differently, the region of the spectacle lens defined by the first partial grid, which is designed for vision at a first object distance and through which the spectacle wearer gazes for the purposes of seeing an object arranged at this distance in focus in the case of intended use, is determined in the present exemplary embodiment by the totality of the object-side (and eye-side) surfaces of the cuboid volume elements 1a, 1b, 1c (i.e., all blackened areas of the surface 3). According to the disclosure, this surface region is between 0.3 cm.sup.2 and 7 cm.sup.2, typically between 0.5 cm.sup.2 and 6 cm.sup.2, more typically between 0.8 cm.sup.2 and 5 cm.sup.2 and, finally, even more typically between 1 cm.sup.2 and 4 cm.sup.2.

(34) The part of the spectacle lens defined by the second partial grid is determined by the totality of the volumes of the cuboid volume elements 2a, 2b, 2c . . . 2x, 2y, 2z in the present exemplary embodiment. Expressed differently, the region of the spectacle lens defined by the second partial grid, which is designed for vision at a second object distance and through which the spectacle wearer gazes for the purposes of seeing an object arranged at this distance in focus in the case of intended use, is determined in the present exemplary embodiment by the totality of the object-side (and eye-side) surfaces of the cuboid volume elements 2a, 2b, 2c (i.e., all white areas of the surface 3). According to the disclosure, this surface region is between 0.3 cm.sup.2 and 7 cm.sup.2, typically between 0.5 cm.sup.2 and 6 cm.sup.2, more typically between 0.8 cm.sup.2 and 5 cm.sup.2 and, finally, even more typically between 1 cm.sup.2 and 4 cm.sup.2.

(35) From a macroscopic point of view, the surface region defined by the first partial grid (i.e., all blackened areas of the surface 3) and the surface region defined by the second partial grid (i.e., all white areas of the surface 3) coincide, and so there is no macroscopic separation between the part of the spectacle lens designed for the first object distance and the part of the spectacle lens designed for the second object distance. In contrast to the conventional type of bifocal or varifocal lens that is designed for a presbyopic wearer, near and far part coincide from the macroscopic point of view.

(36) Particularly in the case where the object-side and eye-side surfaces 3, 4 of the first and second parts of the spectacle lens form plane surfaces, a design for different object distances can be realized exclusively by a corresponding variation in the refractive index. Accordingly, GRIN structures that are nested in one another are required. Instead of or in addition to appropriately adapted refractive index variations, it is also possible to produce nested focal regions using volume elements, whose object-side and/or eye-side surfaces are embodied with the necessary curvature.

(37) The structure shown in FIG. 4 represents a very complex system because the foci of the different materials influence one another again with each layer. This structure is of interest if single vision lenses are considered. Then, these 3D checkerboard patterns could be used at the edge. Since 3D printers can only print in binary fashion, i.e., only one or the other material, “smooth substance changes” must be realized by sufficiently small volume elements.

(38) FIGS. 5A and 5B show a fourth exemplary embodiment for the arrangement of two partial grids formed by volume elements of the first and second volume element groups, displaced within one another in penetrative fashion. FIG. 5A shows the basic arrangement of the volume elements 51a, 51b, . . . 51t, 51u, 52a, 52b, 52c, . . . 52t, 52u in the style of a checkerboard pattern, as described in detail above in relation to FIG. 1. Deviating from the exemplary embodiment according to FIG. 1 (or optionally in addition thereto as well), in which the individual volume elements are designed by the corresponding variation of the refractive index in such a way that fusing parts that facilitate in-focus vision for different object distances arise, volume elements 51a, 51b, . . . 51t, 51u, 52a, 52b, 52c, . . . 52t, 52u whose object-side surfaces (and optionally eye-side surfaces, too) have different curvatures such that neighboring first and second volume elements adjoin one another not continuously but at an angle and optionally with jumps are included in the exemplary embodiment according to FIGS. 5A and 5B, wherein FIG. 5B shows a magnified illustration of in each case one of the first and second volume elements 52c and 52i, which have object-side surfaces 53c and 54c that have a different curvature at the transition at which two neighboring first and second volume elements adjoin one another.

(39) FIG. 6 shows a first exemplary embodiment of a spectacle lens 60 in a plan view from the object side in the form of a schematic sketch. The visible surface is denoted by the reference sign 63. The exemplary embodiment has a region 61, which is embodied in the form according to the disclosure. It is possible to see a nested arrangement of two partial grids in the style of a checkerboard pattern, as shown in FIG. 1. Volume elements of the first partial grid are denoted in exemplary fashion by reference signs 61a, 61b and volume elements of the second partial grid are denoted in exemplary fashion by reference signs 62a, 62b.

(40) According to the disclosure, the region 61 is configured for in-focus vision at two different object distances.

(41) FIG. 7 shows a second exemplary embodiment of a spectacle lens 70 in cross section (schematic sketch). In this exemplary embodiment, the entire spectacle lens 70 includes a first volume element group with a plurality of first volume elements 71a, 71b, which are arranged in the style of grid points of a geometric grid, forming a first partial grid, and of a second volume element group with a plurality of second volume elements 72a, 72b, which are arranged in the style of grid points of a geometric grid, forming a second partial grid. In principle, the exemplary embodiment corresponds to the arrangement of the two partial grids in relation to one another as shown in FIG. 4.

(42) Together, the first volume elements 71a, 71b form a first part of the spectacle lens, which has the dioptric power for vision at a first object distance. Together, the second volume elements form a second part of the spectacle lens, which has the dioptric power for vision at a second object distance that differs from the first object distance. Since the first volume element group and the second volume element group penetrate one another, they form a common macroscopic viewing region that facilitates, firstly, in-focus vision of an object arranged at the first object distance d.sub.1 and in-focus vision of an object arranged at a second object distance d.sub.2. The corresponding focal planes are denoted by reference signs 73 and 74 in the drawing.

(43) FIG. 8 shows a third exemplary embodiment of a spectacle lens 80 in cross section (as a schematic sketch). In this exemplary embodiment, the structure 81 according to the disclosure is applied to the back side (eye side) 84 of a transparent carrier 85 in the form of a buried structure. The front side (object side) 83 of the spectacle lens 80 can have a spherical, toric, rotationally symmetric aspherical, or aspherical shape (e.g., as a free-form surface).

(44) A fourth exemplary embodiment of a spectacle lens 90 in cross section (in the form of a schematic sketch) can be gathered from FIG. 9. In this exemplary embodiment, the structure 91 according to the disclosure is applied to the front side (object side) 93 of a transparent carrier 95 in the form of a buried structure. The back side (eye side) 94 of the spectacle lens 90 can have a spherical, toric, or aspherical shape (e.g., as a free-form surface).

(45) Coatings, such as, for example, hard coats, antireflection coatings, lotus-effect-type coatings and the like, can be applied to one or both optically effective surfaces 83, 84, 93, 94 of the spectacle lenses 80, 90.

(46) FIG. 10 shows a fifth exemplary embodiment of a spectacle lens 102 according to the disclosure in cross section in the form of a schematic sketch. In this exemplary embodiment, the structure 101 according to the disclosure is applied to a part of the back side (eye side) 104 of a transparent carrier 105 in the form of a buried structure. The front side (eye side) 103 of the spectacle lens 102 can have a spherical, toric, or aspherical shape (e.g., as a free-form surface). A smoothing hard coat 106 that also fills the interstices 106a of the buried structure, an adhesion promoter layer 107, and an antireflection coating 108 including a plurality of individual layers is applied to the buried structure 101.

(47) Express reference is made herewith to the fact that structures 102 can also be applied to the carrier 105 on both the front and the back.

(48) An exemplary embodiment of spectacles 100 with spectacle lenses 110a, 110b according to the disclosure can be gathered from FIG. 11. In addition to the two spectacle lenses 110a, 110b, the spectacles 100 comprise a spectacle frame 120 of which the bridge 125, and the two temples 130a, 130b are shown. Each spectacle lens 110a, 110b comprises a carrier 66a, 66b, each of which carries a structure 61a, 61b according to the disclosure of the type shown in FIG. 6. All constituent parts of the spectacles can be produced with the aid of a 3D printing method.

(49) In summary, the concept of the disclosure includes constructing a three-dimensional structure using a manufacturing method (e.g., polyjet printing) that allows controlling the dioptric power of the spectacle lens, in particular controlling the refractive index for each individual volume element and the relative orientation of the surfaces of the volume elements, the far and near regions of the three-dimensional structure being present nested in one another. The change from one focus to the next can be implemented gradually or with a jump. In the first case, small transition zones arise, the transition zones having similar properties to the progression channel in the case of a conventional varifocal lens and the optical properties connected therewith. Secondly, the change in properties can be implemented with a jump by changing the material or changing the orientation of the optical surface.

(50) The surface elements can be arranged as desired. By way of non-limiting example, the surface elements can be arranged as a checkerboard, as hexagons, or as concentric circles.

(51) In an exemplary embodiment, the discontinuous of the surfaces can be embodied as buried structures having two materials, which, firstly, substantially simplifies the subsequent hard and antireflection coating (it is possible to use conventional smoothing hard coat systems) and, secondly, the discontinuities of the surfaces do not form cavities for subsequent accumulation of dirt on the surface.

(52) This yields various combinations of optical surfaces: two discontinuous surfaces on the front and back side, one discontinuous surface on the front or back side, together with a spherical, toric, or aspherical (free-form) surface on the other side of the lens.

(53) Which combination yields the ideal correction emerges from the combination of the individual parameters (spherical, astigmatic, prismatic power, addition, etc.) with the possibilities of the different surface properties.

(54) The hard coat must be set in such a way that the edges of the optically effective surfaces are not smoothed or not smoothed any more than what is absolutely unavoidable. If the change in the refractive power is provided by way of the refractive index of the material, possible arrangements can be found in the patent applications WO 2015/014381 A1 and WO 2014/179780 A1. If the desired power difference (addition) between two or more surface elements is insufficient to obtain the desired effect when only one of the two principles (material variation versus discontinuous surface) is applied, it is possible to combine the two approaches with one another.

(55) The spectacle lens typically includes the conventional finishing, hard coating, and antireflection coating. Transferring the approaches according to the disclosure to hybrid lenses lends itself as a possible exemplary embodiment. A precondition is the availability of a preformed carrier of the structure according to the disclosure that fits to the surface of the spectacle lens.

(56) Further aspects of the disclosure in the form of clauses within the meaning of decision J15/81 of the Legal Board of Appeal of the European Patent Office are presented below:

(57) Clause 1. A spectacle lens (60, 70, 80, 90, 102, 110a, 110b), comprising

(58) a first volume element group, wherein the first volume element group comprises a plurality of first volume elements (1a, 1b, . . . ; 11a, 11b, . . . ; 51a, 51b, . . . ; 61a, 61b; 71a, 71b), wherein the plurality of first volume elements (1a, 1b, . . . ; 11a, 11b, . . . ; 51a, 51b, . . . ; 61a, 61b; 71a, 71b) are arranged in the style of grid points of a geometric grid so as to form a first partial grid, wherein the first volume elements (1a, 1b, . . . ; 11a, 11b, . . . ; 51a, 51b, . . . ; 61a, 61b; 71a, 71b) together form a first part of the spectacle lens (60, 70, 80, 90, 102, 110a, 110b), the first part of the spectacle lens having the dioptric power for vision at a first object distance (d.sub.1),

(59) a second volume element group, wherein the second volume element group comprises a plurality of second volume elements (2a, 2b, . . . ; 12a, 12b, . . . ; 52a, 52b, . . . ; 62a, 62b; 72a, 72b), wherein the plurality of second volume elements (2a, 2b, . . . ; 12a, 12b, . . . ; 52a, 52b, . . . ; 62a, 62b; 72a, 72b) are arranged in the style of grid points of a geometric grid so as to form a second partial grid, wherein the second volume elements (2a, 2b, . . . ; 12a, 12b, . . . ; 52a, 52b, . . . ; 62a, 62b; 72a, 72b) together form a second part of the spectacle lens (60, 70, 80, 90, 110a, 110b), the second part of the spectacle lens having the dioptric power for vision at a second object distance (d.sub.2) that differs from the first object distance (d.sub.1),

(60) i) characterized in that

(61) the first partial grid and the second partial grid are arranged within one another, penetrating one another in each case.

(62) Clause 2. The spectacle lens (60, 70, 80, 90, 102, 110a, 110b) according to clause 1, characterized in that the first volume elements (1a, 1b, . . . ; 11a, 11b, . . . ; 51a, 51b, . . . ; 61a, 61b; 71a, 71b) consist of a first material and in that the second volume elements (2a, 2b, . . . ; 12a, 12b, . . . ; 52a, 52b, . . . ; 62a, 62b; 72a, 72b) consist of a second material that differs from the first material.

(63) Clause 3. The spectacle lens (60, 70, 80, 90, 102, 110a, 110b) according to either of clauses 1 and 2, characterized in that the first material has a first refractive index and in that the second material has a second refractive index that differs from the first refractive index.

(64) Clause 4. The spectacle lens (60, 70, 80, 90, 102, 110a, 110b) according to any one of the preceding clauses, characterized in that the first volume elements (51a, 51b, 51i, 51t, 51u) each have a first surface element (54c) and in that the second volume elements (52a, 52b, 52c, 52t, 52u) each have a second surface element (53c) and in that respectively one of the first surface elements (54c) and respectively one of the second surface elements (53c), which adjoin one another, are arranged at an angle to one another.

(65) Clause 5. The spectacle lens (60, 102, 110a, 110b) according to any one of the preceding clauses, characterized in that the first partial grid has a two-dimensional shape and/or in that the second partial grid has a two-dimensional shape.

(66) Clause 6. The spectacle lens (70, 80, 90) according to any one of the preceding clauses, characterized in that the first partial grid has a three-dimensional shape and/or in that the second partial grid has a three-dimensional shape.

(67) Clause 7. The spectacle lens (60, 70, 80, 90, 102, 110a, 110b) according to any one of the preceding clauses, characterized in that the first object distance (d.sub.1) differs from the second object distance (d.sub.2) by more than a value from the group of 10 cm, 15 cm, 20 cm, 30 cm and 50 cm.

(68) Clause 8. The spectacle lens (60, 80, 90, 102, 110a, 110b) according to any one of the preceding clauses, characterized in that the first volume element group and the second volume element group are arranged on a surface of a carrier (85, 95, 105, 66a, 66b).

(69) Clause 9. The spectacle lens (60, 80, 90, 102, 110a, 110b) according to clause 8, characterized in that

(70) the carrier (85) has an object-side spherical or toric or free-form surface and in that the surface on which the first volume element group and the second volume element group are arranged is the eye-side surface of the carrier (85), or in that

(71) the carrier (95, 105) has an eye-side spherical or toric or free-form surface and in that the surface (104) on which the first volume element group and the second volume element group are arranged is the object-side surface of the carrier (95, 105), or in that

(72) the surface on which the first volume element group and the second volume element group are arranged is the eye-side and/or the object-side surface of the carrier.

(73) Clause 10. The spectacle lens (60, 80, 90, 102, 110a, 110b) according to either of clauses 8 and 9, characterized in that the carrier (85, 95, 105, 66a, 66b) has a refractive index gradient.

(74) Clause 11. The spectacle lens (60, 70, 80, 90, 102, 110a, 110b) according to any one of the preceding clauses, characterized in that a coat (106, 106a, 107, 108) is arranged on the first volume element group and the second volume element group.

(75) Clause 12. The spectacle lens (60, 70, 80, 90, 102, 110a, 110b) according to any one of the preceding clauses, characterized in that the first volume elements (1a, 1b, . . . ; 11a, 11b, . . . ; 51a, 51b, . . . ; 61a, 61b; 71a, 71b) each have a volume of between 1000 μm.sup.3 and 1 mm.sup.3 and/or in that the second volume elements (2a, 2b, . . . ; 12a, 12b, . . . ; 52a, 52b, . . . ; 62a, 62b; 72a, 72b) each have a volume of between 1000 μm.sup.3 and 1 mm.sup.3.

(76) Clause 13. The spectacle lens (60, 70, 80, 90, 102, 110a, 110b) according to clause 12, characterized in that

(77) the first volume elements (1a, 1b, . . . ; 11a, 11b, . . . ; 51a, 5b, . . . ; 61a, 61b; 71a, 71b) each have an object-side surface of between 100 μm.sup.2 and 1 mm.sup.2 and/or in that the second volume elements (2a, 2b, . . . ; 12a, 12b, . . . ; 52a, 52b, . . . ; 62a, 62b; 72a, 72b) each have an object-side surface of between 100 μm.sup.2 and 1 mm.sup.2, and/or in that

(78) the first volume elements (1a, 1b, . . . ; 11a, 11b, . . . ; 51a, 51b, . . . ; 61a, 61b; 71a, 71b) each have an eye-side surface of between 100 μm.sup.2 and 1 mm.sup.2 and/or in that the second volume elements (2a, 2b, . . . ; 12a, 12b, . . . ; 52a, 52b, . . . ; 62a, 62b; 72a, 72b) each have an eye-side surface of between 100 μm.sup.2 and 1 mm.sup.2.

(79) Clause 14. A method for producing a spectacle lens (60, 70, 80, 90, 102, 110a, 110b), including the steps of:

(80) additive manufacturing of a first volume element group, wherein the first volume element group comprises a plurality of first volume elements (1a, 1b, . . . ; 11a, 11b, . . . ; 51a, 51b, . . . ; 61a, 61b; 71a, 71b), wherein the plurality of first volume elements (1a, 1b, . . . ; 11a, 11b, . . . ; 51a, 51b, . . . ; 61a, 61b; 71a, 71b) are arranged in the style of grid points of a geometric grid so as to form a first partial grid, wherein the first volume elements (1a, 1b, . . . ; 11a, 11b, . . . ; 51a, 51b, . . . ; 61a, 61b; 71a, 71b) together form a first part of the spectacle lens (60, 70, 80, 90, 110a, 110b), the first part of the spectacle lens having the dioptric power for vision at a first object distance (d.sub.1),

(81) additive manufacturing of a second volume element group, wherein the second volume element group comprises a plurality of second volume elements (2a, 2b, . . . ; 12a, 12b, . . . ; 52a, 52b, . . . ; 62a, 62b; 72a, 72b), wherein the plurality of second volume elements (2a, 2b, . . . ; 12a, 12b, . . . ; 52a, 52b, . . . ; 62a, 62b; 72a, 72b) are arranged in the style of grid points of a geometric grid so as to form a second partial grid, wherein the second volume elements (2a, 2b, . . . ; 12a, 12b, . . . ; 52a, 52b, . . . ; 62a, 62b; 72a, 72b) together form a second part of the spectacle lens (60, 70, 80, 90, 110a, 110b), the second part of the spectacle lens having the dioptric power for vision at a second object distance (d.sub.2) that differs from the first object distance (d.sub.1),

(82) i) characterized in that the first partial grid and the second partial grid are arranged within one another, penetrating one another in each case, during the additive manufacturing.

(83) Clause 15. The method according to clause 14, characterized by the step of:

(84) additive manufacturing of a carrier (66a, 66b) with a surface (104), on which the first volume element group and the second volume element group are arranged.

(85) The foregoing description of the exemplary embodiments of the disclosure illustrates and describes the present invention. Additionally, the disclosure shows and describes only the exemplary embodiments but, as mentioned above, it is to be understood that the disclosure is capable of use in various other combinations, modifications, and environments and is capable of changes or modifications within the scope of the concept as expressed herein, commensurate with the above teachings and/or the skill or knowledge of the relevant art.

(86) The term “comprising” (and its grammatical variations) as used herein is used in the inclusive sense of “having” or “including” and not in the exclusive sense of “consisting only of.” The terms “a” and “the” as used herein are understood to encompass the plural as well as the singular.

(87) All publications, patents and patent applications cited in this specification are herein incorporated by reference, and for any and all purposes, as if each individual publication, patent or patent application were specifically and individually indicated to be incorporated by reference. In the case of inconsistencies, the present disclosure will prevail.