Optical lens, eyeglasses having the optical lens, and method for producing the optical lens

Abstract

An optical lens has a substrate (1) and at least one antireflective coating system, which is provided on an end face (111) of the substrate and has an antireflection multi-layer coating having at least six layers (11, 12, 21, 22, 31, 32, 41, 42), which form different layer pairs, each pair having a first and a second layer, wherein, for each of the layer pairs, the first layer has a greater refractive index than the second layer, and the antireflective coating system additionally has a layer (2) which adjoins the substrate and has at least one element from group 11 of the periodic table of elements. The invention also relates to eyeglasses and to a production method.

Description

[0001] Description

[0002] Optical lens, spectacles with the optical lens and method for manufacturing the optical lens

[0003] The present invention relates to an optical lens, spectacles with at least one optical lens described herein and a method for manufacturing an optical lens described herein.

[0004] The object of the present invention is to improve an optical lens with an anti-reflective coating and / or its manufacture.

[0005] This problem is solved by a method with the features of claim 1. Claims 15 and 16 protect spectacles with at least one optical lens as described herein and a method for manufacturing an optical lens as described herein. The dependent claims relate to advantageous embodiments.

[0006] According to one embodiment of the present invention, an optical lens has a substrate, wherein an antireflective coating system of the optical lens is arranged on at least one end face of the substrate and, in a further development, is connected to the substrate, preferably by a material bond.

[0007] In a further development, an antireflective coating system, as described below, is applied (only) to one of the two end faces of the substrate. This can advantageously offer a flatter (axially) design and / or an end face that can be used in a different way and is, in one version, free of the antireflective coating system. Accordingly, the other of the two end faces of the substrate can, in one version, be uncoated or have a different type of coating.

[0008] In a further development, an antireflective coating system described below is arranged on one of the two end faces of the substrate, and another antireflective coating system is arranged on the other end face. This second antireflective coating system can also be one of the antireflective coating systems described below, or it can be a different type of antireflective coating system. Two antireflective coating systems, one or both of which are described below, can advantageously provide even better anti-reflective properties.

[0009] Accordingly, the following explanations of "the antireflective coating system" refer in particular to at least one antireflective coating system which is arranged on an end face of the substrate, in a further development to one or both antireflective coating systems which are arranged on the two end faces of the substrate, or, in particular, "the antireflective coating system" refers to at least, in one embodiment exactly, one antireflective coating system or two antireflective coating systems or each of the two antireflective coating systems, one of which is arranged on one end face of the substrate and the other on the other end face of the substrate.

[0010] In general, in one embodiment, an antireflective coating system as described below is arranged on one of the two end faces of the substrate and, in a further development, is connected to the substrate, preferably by a material bond, and on the other of the two end faces of the substrate, there is no coating or at least one coating, in a further development, a coating system having several layers is arranged and, in a further development, is connected to the substrate, preferably by a material bond, wherein this coating (system) arranged on the other of the two end faces of the substrate may, in an advantageous further development, also have an antireflective coating system as described below or of a different type and / or a mirrored coating (system).By combining an antireflective coating system described below with a coating (system) arranged on the other end face of the substrate, a synergistic effect of the coatings can be achieved particularly advantageously and / or the coating(s) can be positioned and / or manufactured in a particularly advantageous manner.

[0011] An end face within the meaning of the present invention is preferably, in a manner customary in the art, an axial end face, with respect to an optical (principal) axis of the lens, and / or one of the two largest surfaces of the lens or an end face which is connected to one or the other end face by a circumferential or lateral surface of the lens.

[0012] The present invention is particularly advantageous for use in eyeglasses, especially sunglasses and / or optical or ophthalmic or corrective eyeglasses, without being limited thereto. In one embodiment, the substrate generally features an optical, preferably ophthalmic, correction, in particular a correction of a refractive error, preferably myopia and / or hyperopia and / or astigmatism, which can particularly facilitate the advantageous use of a lens according to the invention as a corrective eyeglass lens. Additionally or alternatively, the optical lens is photochromic, in particular phototropic, and / or colored or tinted, which can particularly facilitate the advantageous use of a lens according to the invention as a sunglass lens. Especially with such photochromic or phototropic and / or colored or tinted lenses, the invention offers significant advantages.For tinted lenses, the following combination of layer pairs with a specific substrate-adjacent layer is particularly advantageous, since a (photochromic or phototropic) coloring or tinting can advantageously mask a visible effect of this substrate-adjacent layer and / or interact advantageously with the substrate-adjacent layer, in particular improving, and especially accelerating, the lightening of a photochromic or phototropic coloring or tinting. In one embodiment, the optical lens is an optical lens of spectacles or is designed or used for this purpose; it can, in particular, be a spectacle lens or spectacle lens blank or semi-finished spectacle lens product. The end face of the substrate is preferably an object- or environment-facing, ocular- or eye- or wearer-facing, or front end face or front surface of the substrate. The antireflective coating system is preferably an interferometrically reflection-reducing or...Optically active antireflective coating system. According to one embodiment of the present invention, it comprises, firstly, an antireflective multi-layer coating (multiple antireflective coating or multi-coating) with six or more layers, which form (three or more) optically different layer pairs, each with its own first and second layer, wherein for each of these layer pairs, the first layer (of the respective layer pair) has a higher refractive index than the second layer (of this or of the respective layer pair). This refractive index is preferably specified or determined as the refractive index n at a wavelength, which is also referred to as the reference wavelength. Preferably, this (reference) wavelength is 589 nm (yellow-orange, in particular the sodium D-line), but it can also be another wavelength of visible light or a wavelength between 400 nm and 750 nm. In one embodiment,The refractive index is determined at a reference wavelength in the range between 500 nm and 570 nm, or preferably around 550 nm, corresponding to the maximum of ocular sensitivity. As indicated above, different layer pairs are understood to be, in particular, optically different layer pairs, especially anti-reflective layer pairs, which are tuned to different wavelengths or cancel out or attenuate different (central wavelengths). These different layer pairs can, in particular, consist of first layers made of the same material but with different thicknesses, first layers with the same thickness but made of different materials, or first layers made of different materials and with different thicknesses.Additionally or alternatively, different layer pairs can include, in particular, second layers made of the same material but with different layer thicknesses, second layers with the same layer thickness but made of different material, or second layers made of different material and with different layer thicknesses.

[0013] According to one embodiment of the present invention, the

[0014] The antireflective coating system additionally includes a layer closest to the substrate, which comprises at least one element from group 11, the copper group, or group 1 of the periodic table of elements, preferably at least 50%, preferably at least 75%, and in a further development at least 90%, and is therefore hereinafter also referred to as the copper group layer.

[0015] It has surprisingly turned out that by combining such a substrate-adjacent (copper group) layer with such an anti-reflective multi-layer coating with at least three layer pairs, a particularly advantageous anti-reflective effect can be achieved, preferably broadband or for a large wavelength range of electromagnetic, preferably visible, radiation and / or with a more complex (design of a) reflectivity profile (for electromagnetic radiation) over a wavelength range (of the electromagnetic radiation), and / or an advantageous anti-fog effect and / or an advantageous, preferably faster, brightening of phototropic lenses, and / or a manufacturing process can be improved, in particular with regard to a design or layout, process control and / or stability.

[0016] In one embodiment, the substrate-adjacent (copper group) layer of the antireflective coating system has a layer thickness of at least 0.3 nm, preferably at least 0.5 nm, and more preferably at least 0.7 nm, particularly a maximum, minimum, and / or average or mean layer thickness. Additionally or alternatively, in one embodiment, the substrate-adjacent (copper group) layer of the antireflective coating system has a layer thickness of at most 2 nm, preferably at most 1.7 nm, and more preferably at most 1.5 nm, particularly a maximum, minimum, and / or average or mean layer thickness. With such layer thicknesses, in combination with an antireflective multi-layer coating according to the invention with at least three layer pairs, one or more of the aforementioned effects can be achieved particularly advantageously.

[0017] In one embodiment, the layer of the antireflective coating system closest to the substrate (copper group layer) is arranged on a lacquer layer of the substrate. This allows for improved application of the layer closest to the substrate (copper group layer) and / or its effect, particularly its optical properties.

[0018] In a particularly preferred embodiment, the substrate-adjacent (copper group) layer of the antireflective coating system comprises the element Au or gold; in a preferred further development, it consists of at least 50%, preferably at least 75%, and in a further development, at least 90% of this element. Gold, in particular, has proven to be especially advantageous for achieving one or more of the aforementioned effects.

[0019] In a preferred embodiment, the substrate-adjacent (copper group) layer of the antireflective coating system comprises the element Ag or silver and / or the element Cu or copper; in a preferred further development, it consists of at least 50%, preferably at least 75%, and in a further development at least 90%, of Ag or Cu. With these elements, one or more of the aforementioned effects can also be advantageously achieved, thereby saving costs.

[0020] In one embodiment, the optical lens, in a further development the anti-reflective coating system, has at least one adhesion-promoting layer or adhesive layer; in a further development it has

[0021] - the optical lens or the anti-reflective coating system:

[0022] - between the first and second layer of one or more of the layer pairs (each) one or more adhesion-promoting or bonding layers; and / or

[0023] - in one or more pairs of adjacent layer pairs, between one, in particular the first or second, layer of one (of these) layer pair(s) and one, in particular the first or second, (adjacent) layer of the other or adjacent of these layer pair(s), (each) one or more adhesion-promoting or adhesive layers; and / or - the optical lens:

[0024] - one or more adhesion-promoting or bonding layers between the anti-reflective coating system and the layer closest to the substrate; and / or

[0025] - one or more adhesion-promoting or bonding layers between the substrate and the layer closest to the substrate.

[0026] An adhesive layer increases the adhesion or bonding between individual layers of the antireflective coating system. This advantageously results in an improved antireflective coating system in which the individual layers adhere better to each other, leading to an antireflective coating system with improved durability and high stability. This is because defects in the antireflective coating system, such as layer delamination caused by the separation of individual layers due to reduced adhesion, are reduced or prevented.

[0027] The adhesive layers, or one or more of them, in one embodiment (each) have a layer thickness of at least 1 nm, preferably at least 2 nm, and more preferably at least 3 nm, particularly a maximum, minimum, and / or average layer thickness. Additionally or alternatively, in one embodiment, the adhesive layers, or one or more of them, as mentioned in a further development of this or previously with reference to a lower limit for the layer thickness, in one embodiment (each) have a layer thickness of at most 20 nm, preferably at most 15 nm, and more preferably at most 12 nm, particularly a maximum, minimum, and / or average layer thickness.

[0028] In one embodiment, the adhesive layers, or one or more of them, comprise an inorganic material, preferably a metal or semimetal, and more preferably a substoichiometric metal oxide or semimetal oxide. In a further embodiment, the adhesive layers, or one or more of them, consist entirely of these materials. These layers are characterized by a high bonding affinity or reactivity, particularly towards layers formed from (semi)metal oxide or dielectric materials, such as tantalum pentoxide, zirconium dioxide, or silicon dioxide. This advantageously results in particularly good adhesion.

[0029] In one embodiment, a (semi-)metal (oxide) adhesive layer is formed using a sputtering process or physical vapor deposition (PVD process); in a further development, this is done in the presence of plasma and / or ion bombardment and / or laser radiation and / or (reactive) species or gases. This allows the adhesive layer to be formed with particularly good control, especially under vacuum conditions.

[0030] In one embodiment, the adhesive layers, or one or more of them, comprise an organic material or compound, wherein the organic compound preferably comprises polymers, and more preferably silane-containing compounds or silanes, to form an (organic) adhesive layer. In a further embodiment, the adhesive layers, or one or more of them, consist entirely of this material or compound. This advantageously results in particularly good adhesion.

[0031] In one embodiment, an adhesive layer consists of, or is formed from, an organic compound comprising at least one carbon atom, one hydrogen atom, and a Si-X compound consisting of a silicon atom with a hydrolyzable group X. Preferably, X is selected from hydrogen, a halogen, an alkoxy, an aryloxy, an alkyl, an aryl, or a group comprising one or more of the aforementioned. More preferably, the organic compound comprises, is formed from, or is composed of, tetramethyldisiloxane or hexamethyldisiloxane. This advantageously results in particularly good adhesion.

[0032] In one embodiment, an organic adhesive layer is formed by chemical vapor deposition (CVD process); in a further development, this is done in the presence of plasma and / or ion bombardment and / or laser radiation and / or (reactive) species or gases. This allows the adhesive layer to be formed advantageously with particularly good control, especially under vacuum conditions. In a preferred embodiment, at least one adhesive layer is arranged between the substrate and the layer closest to the substrate. Particularly in embodiments where the thickness of the layer closest to the substrate is less than approximately 5 nm, this layer is not (fully) formed, which can lead to adhesion deficiencies between the substrate and the layer closest to the substrate. In these cases, in particular, the arrangement of an adhesive layer can advantageously achieve particularly good adhesion of the layer closest to the substrate to the substrate.

[0033] In a preferred embodiment, at least one adhesive layer is arranged between the layer closest to the substrate and one of the layers of the antireflective coating system that is next to it, in particular the first or second layer. Especially in embodiments where the thickness of the layer closest to the substrate is less than approximately 5 nm, this layer is not formed across its entire surface, which can lead to adhesion deficiencies between the layer closest to the substrate and this adjacent layer of the antireflective coating system. Here, by placing an adhesive layer, particularly good adhesion of the first layer of the antireflective coating system to the layer closest to the substrate can be advantageously achieved.

[0034] A particularly preferred embodiment relates to a combination of two or more adhesive layers, wherein, in a particularly preferred further development of this embodiment, at least one (first) adhesive layer is arranged between the substrate and the layer closest to the substrate, and at least one other (second) adhesive layer is arranged between the layer closest to the substrate and this adjacent or next layer, in particular the first or second, of the antireflective coating system. Such an arrangement, which can also be described as a sandwich arrangement because the layer closest to the substrate is arranged between a first and a second adhesive layer, can advantageously achieve particularly good adhesion of the antireflective coating system because the advantages of the two preceding embodiments are synergistically combined. In one embodiment, the arrangement of a combination of adhesive layers is achieved by (temporally) sequential application.Formation of at least one first adhesive layer, preferably by means of a CVD process as described above, followed by the application or formation of the layer closest to the substrate, preferably by means of sputtering and / or a PVD process as described above, again followed by the application or formation of at least one second adhesive layer, preferably by means of a CVD process as described above. This allows such an arrangement of a combined adhesive layer to be advantageously formed with particularly good control, especially under vacuum conditions.

[0035] In a variation of this, a combination of adhesive layers is created by (temporally) parallel application or formation, in particular by a type of co-evaporation to form a hybrid or organic-inorganic layer, in which both the material forming the adhesive layer and the material forming the layer closest to the substrate are present in their respective gas phases and, preferably simultaneously, are deposited or arranged as a vapor precipitate on the substrate to be coated. This advantageously forms a continuous hybrid (overall) layer which, due to the absence of individual, separable (partial) layers, exhibits excellent adhesion properties.

[0036] In a further development of this process, the co-evaporation described above for forming a combination of adhesive layers takes place in such a way that the concentration or proportion of the adhesive layer (forming) material and the substrate-adjacent layer (forming) material is varied or changed during the process, for example by altering coating process parameters such as evaporation rate, gas flow, heating current or power, and the like. This allows the advantages described above to be realized particularly well.In a preferred embodiment, the concentration of the adhesive layer material is initially higher than the concentration of the material in the layer closest to the substrate. It is then decreased until the concentration of the material in the layer closest to the substrate is higher than the concentration of the adhesive layer material, and finally increased again until the concentration of the adhesive layer material is once more higher than the concentration of the material in the layer closest to the substrate. In other words, a gradual substrate-adjacent layer is created or formed in the vicinity of the adhesive layer; that is, the concentration of the substrate-adjacent layer within the surrounding adhesive layer is gradual or described by a gradient. This allows the advantages described above to be realized particularly well.

[0037] In one embodiment, the first layer of one or more, preferably successive, of the three or more layer pairs, preferably the first layer of the three or more layer pairs, is arranged (each) between two second layers of the layer pairs, so that in a further development, preferably starting from the substrate, the sequence is: second layer of a layer pair - first layer of the next layer pair - second layer of the next layer pair (- first layer of the next layer pair - second layer of the next layer pair...). This allows one or more of the aforementioned effects to be realized particularly advantageously.

[0038] In one embodiment, the second layer of one or more, preferably successive, of the three or more layer pairs, preferably the second layer of the three or more layer pairs, is arranged (each) between two first layers of the layer pairs, so that in a further development, preferably starting from the substrate, the sequence is: first layer of a layer pair - second layer of the next layer pair - first layer of the next layer pair (- second layer of the next layer pair - first layer of the next layer pair...). This arrangement can also be used to achieve one or more of the aforementioned effects particularly advantageously.As explained again below, other layers can be arranged between the first and second layers, for example: second layer of a layer pair - other layer(s) - first layer of the next layer pair - (possibly other layer(s) - second layer of the next layer pair... or first layer of a layer pair - other layer(s) - second layer of the next layer pair - (possibly other layer(s) - first layer of the next layer pair.

[0039] Likewise, it can be particularly advantageous if, in one or more of the layer pairs, their first and second layers are arranged on top of each other and / or, in two or more of the layer pairs, one of the first and second layers of one layer pair is arranged on top of one of the first and second layers of the other layer pair.

[0040] In one embodiment, the first layer of one or more of the three or more layer pairs comprises (each) one or more of the materials Ta₂O₃, Al₂O₃, TiOy, TiCh, ZrO₂, Nd₂O₃, Pr₂O₃, PrTiO₃, La₂O₃, Nb₂O₃, Y₂O₃, HfCh, InSn oxide, ZnS, SisN₄, MgO, CeCh, and / or SC₂O₃. In a preferred further development, the (respective) first layer consists of at least 50%, preferably at least 75%, and in a further development at least 90% of these materials. Preferably, the first layers of two or more of the three or more layer pairs each consist of the same material. Additionally or alternatively, in one embodiment, the first layers of two or more of the three or more layer pairs each consist of different materials. These materials or material combinations allow one or more of the aforementioned effects to be achieved particularly advantageously.

[0041] In one embodiment, the second layer of one or more of the three or more layer pairs comprises (each) one or more of the materials SiC>2, MgF2, SiO, silanes, siloxanes, or a mixture comprising SiCh and Al2O3. In a preferred further development, the (respective) second layer consists of at least 50%, preferably at least 75%, and in a further development at least 90% of these materials. Preferably, the second layers of two or more of the three or more layer pairs each consist of the same material. Additionally or alternatively, in one embodiment, the second layers of two or more of the three or more layer pairs each consist of different materials. These materials or material combinations allow one or more of the aforementioned effects to be achieved particularly advantageously.

[0042] In one embodiment, the first layer of one or more of the three or more layer pairs (each) has a refractive index of at least 1.6, preferably at least 1.7, and more preferably at least 1.9. Additionally or alternatively, in one embodiment, the second layer of one or more of the three or more layer pairs (each) has a refractive index of less than 1.6, preferably at most 1.55, and more preferably at most 1.48. In this context, the term refractive index is preferably, as already mentioned, the refractive index n (specified or determined) at the reference wavelength, in particular 589 nm or in the range between 500 nm and 570 nm, preferably approximately 550 nm. These refractive indices allow one or more of the aforementioned effects to be achieved particularly advantageously.

[0043] In one embodiment, the substrate comprises at least one support layer made of mineral glass, preferably crown glass. The present invention is particularly advantageous for the antireflective coating or anti-reflection of mineral glass, which may itself be coated. In another embodiment, the substrate comprises at least one support layer made of plastic or organic glass. The present invention is also particularly advantageous for the antireflective coating or anti-reflection of plastic or organic glass, which may itself be coated.

[0044] In one embodiment, the substrate has one or more intermediate layers that are arranged between the carrier layer and the antireflective coating system or its layer closest to the substrate (copper group layer). In a further development, the intermediate layer (or at least one of these intermediate layers) is a lacquer layer and / or a hard coating, in particular a hard lacquer layer.

[0045] Likewise, one or more of these intermediate layers can be, in particular, a primer, adhesion layer, or bonding agent layer. Accordingly, one or more of these intermediate layers can be, in particular, the aforementioned lacquer layer of the substrate, on which, in one embodiment, the layer closest to the substrate (copper group layer) is or will be arranged. In one embodiment, the antireflective coating system can be advantageously applied and / or the substrate layer protected by such an intermediate layer.

[0046] In one embodiment, the optical lens has one or more cover layers, with the antireflective coating system being arranged between this cover layer(s) and the substrate. This allows the antireflective coating system to be advantageously protected in one embodiment.

[0047] As already mentioned, a particularly advantageous antireflection can be achieved by combining a substrate-adjacent (copper group) layer with an antireflection multi-layer coating according to the invention, comprising at least three different layer pairs, each with a first and second layer having different refractive indices. In one embodiment, the antireflection coating system can advantageously exhibit a reflectivity for electromagnetic radiation of R < 4% in the direction of an optical (principal) axis of the lens for at least one wavelength range between 400 nm and 760 nm, preferably between 380 nm and 780 nm, and in another embodiment between 350 nm and 800 nm.

[0048] To produce an optical lens described herein, according to one embodiment of the present invention, the antireflective coating system is arranged on the end face of the substrate, preferably layer by layer and / or step by step, in particular first the layer closest to the substrate (copper groups) and then the layer pairs, in particular their first and second layers.

[0049] In one embodiment, the first and second layers of one or more of the at least three layer pairs are arranged adjacent to each other. Additionally or alternatively, in another embodiment, the first layer of one layer pair and the second layer of the next layer pair are arranged adjacent to each other in two or more consecutive layer pairs, and / or the second layer of one layer pair and the first layer of the next layer pair are arranged adjacent to each other in two or more consecutive layer pairs. This allows for the realization of a particularly compact antireflective coating system. Likewise, at least one third layer can be arranged between the first and second layers of one or more of the at least three layer pairs. Additionally or alternatively,In one embodiment, at least a third layer is arranged between the first layer of one layer pair and the second layer of the next layer pair in two or more consecutive pairs of at least three layers, and / or at least a third layer is arranged between the second layer of one layer pair and the first layer of the next layer pair in two or more consecutive pairs of at least three layers. This can improve an optical effect and / or the manufacturing process of the antireflective coating system.

[0050] Further advantages and features will become apparent from the dependent claims and the exemplary embodiments. These are shown, in part schematically:

[0051] Fig. 1: an optical lens according to one embodiment of the present

[0052] Invention;

[0053] Fig. 2: Parameters of the optical lens;

[0054] Fig. 3: an optical lens according to a further embodiment of the present

[0055] invention; and

[0056] Fig. 4: Parameters of this optical lens.

[0057] Fig. 1 shows (the structure) of an optical lens according to one embodiment of the present invention, Fig. 2 parameters of this optical lens. The optical lens has a substrate 1 comprising a support layer 100 made of mineral glass or plastic (in the exemplary embodiment, plastic 1.5, see Fig. 2) and a hard lacquer layer 110 with a layer thickness of approximately 3 pm (in the exemplary embodiment, hard lacquer 1.5; see Fig. 2).

[0058] The optical lens can in particular be an optical lens (for) a pair of glasses according to an embodiment of the present invention, its optical (main) axis A is indicated by a dashed line in Fig. 1, whereby for the sake of simplicity a curvature of the lens is not shown.

[0059] An antireflective coating system is arranged on a front or object- or environment-side end face 111 of the substrate, comprising first layers 11, 21, 31 (in the exemplary embodiment, Ta2Os layers with a refractive index of 2.0183; see Fig. 2) and second layers 12, 22, 32, 42 (in the exemplary embodiment, SiCh layers with a refractive index of 1.4599; see Fig. 2), which form different layer pairs, each with one (of the) first and second layer(s).

[0060] An (optional) functional layer 41 (in this exemplary embodiment, an A₂O₃ layer with a refractive index of 1.671; see Fig. 2) is arranged between layers 31 and 42. Such a functional layer can, for example, serve to compensate for layer stresses and / or have an antistatic effect. In one embodiment, such a functional layer is not present at all, in another embodiment it is present once, and in yet another embodiment two or more functional layers are present. In a further development, the same functional layer and / or different functional layers are present multiple times. In one embodiment, the functional layer(s) is / are arranged between the first and second layers of each layer pair and / or between layer pairs.Additionally or alternatively, such functional layers can also be arranged between the substrate and the layer pairs and / or on the substrate-facing side of the layer pairs. In a modification not shown, for example, instead of the functional layer 41 indicated in Fig. 1, two functional layers can be arranged in the layer package, one of which compensates for layer stresses and the other of which provides antistatic properties.

[0061] The antireflective coating system additionally features a substrate-closer (copper group) layer 2 (in the exemplary embodiment, an Au layer with a refractive index of 0.331 and a layer thickness of 1 nm; see Fig. 2).

[0062] The optical lens also has a top layer 3 (in the exemplary embodiment a protective topcoat; see Fig. 2) with a layer thickness of 10 nm, wherein the antireflective coating system is arranged between this top layer 3 and the substrate 1.

[0063] To manufacture the optical lens, the aforementioned layers 2, 12, 11, 22, 21, 32, 31, optionally 41, 42 and 3 are arranged in this order on the first end face 111 of the substrate 1. If, as explained above by way of example, additional layers, in particular functional ones, are provided, these are arranged at the corresponding location.

[0064] In the table in Fig. 2, the left column contains the reference numeral from Fig. 1, the column next to it the material M, the column next to that the refractive index n, the column next to that the extinction coefficient k, the column next to that the layer thickness d in nanometers (nm) or micrometers (pm), and the right column the optical thickness T, where refractive index n, extinction coefficient k, and optical thickness T are each given relative to a reference wavelength in the range between 500 nm and 570 nm or (approximately) 550 nm. No (layer) thickness or optical thickness is given for the substrate layer 100, as these can be considered infinite for simplicity in this embodiment.

[0065] Fig. 3 shows the structure of an optical lens according to a further embodiment of the present invention, Fig. 4 shows the parameters of this optical lens. Features corresponding to the embodiment described above are designated with identical reference numerals, so that reference is made to the above explanations and only differences are discussed below.

[0066] In the embodiment shown in Figures 3 and 4, a (first) adhesive layer 210 made of an organic or inorganic material Mat1 is arranged between the substrate 1 or its end face 111 and the layer 2 closest to the substrate. This layer 210 can, for example, have a thickness of 6 nm. Alternatively, or particularly advantageously, a (second) adhesive layer 220 made of an organic or inorganic material Mat2 is arranged between the layer 2 closest to the substrate and the next layer 12 of the antireflective coating system (the second layer in this embodiment). This second adhesive layer 220 can, for example, have a thickness of 7 nm and can be the same material as or different from Mat1.

[0067] Additionally or alternatively, at least one adhesive layer can be arranged between the first and second layers of at least one layer pair - for illustration, such an adhesive layer 230 made of a material Mat3 is indicated by dashed lines in Figs. 3, 4, which is arranged between the first layer 11 and the second layer 12 of the layer pair (11 , 12) and / or - again by way of example - has a layer thickness of for example 6 nm and / or can be the same material as the material Mat1 and / or Mat2 or different from it.

[0068] Additionally or alternatively, in at least one pair of adjacent layer pairs, at least one adhesive layer can be arranged between a layer of one layer pair and a layer of the adjacent layer pair of the pair of adjacent layer pairs - for illustration, such an adhesive layer 240 made of a material Mat4 is indicated by dashed lines in Figs. 3, 4, which is arranged between the first layer 11 of the layer pair (11 , 12) and the second layer 22 of the adjacent layer pair (21 , 22) and / or - again by way of example - has a layer thickness of for example 7 nm and / or can be the same material as the material Mat1 and / or Mat2 and / or Mat3 or different from it.

[0069] In the present disclosure, "has an X" does not generally imply an exhaustive list, but is a short form of "has at least one X". 1and also includes "has two or more X" as well as "has Y in addition to X". Although exemplary embodiments were explained in the preceding description, it should be noted that a multitude of variations are possible. Furthermore, it should be noted that the exemplary embodiments are merely examples and are not intended to restrict the scope of protection, the applications, or the structure in any way. Rather, the preceding description provides the skilled person with a guideline for implementing at least one exemplary embodiment, whereby various modifications, particularly with regard to the function and arrangement of the described components, can be made without departing from the scope of protection as defined by the claims and these equivalent combinations of features.

[0070] List of reference signs

[0071] 1 substrate

[0072] 2nd layer closest to the substrate (copper groups)

[0073] 3 Top layer

[0074] 11 first shift

[0075] 12 second shift

[0076] 21 first shift

[0077] 22 second shift

[0078] 31 first shift

[0079] 32 second shift

[0080] 41 first shift

[0081] 42 second shift

[0082] 100 carrier position

[0083] 110 Hard lacquer layer

[0084] 111 Front surface

[0085] 210 adhesive layer

[0086] 220 Adhesive layer 230 Adhesive layer 240 Adhesive layer

[0087] A optical axis d layer thickness k extinction coefficient

[0088] M Material n Refractive index

[0089] T optical thickness

Claims

Patent claims 1. Optical lens comprising: a substrate (1); and at least one antireflective coating system arranged on an end face (111) of the substrate and comprising an antireflective multi-layer coating with at least six layers (11, 12, 21, 22, 31, 32, 42) forming different layer pairs, each with a first and second layer, wherein for each of these layer pairs the first layer has a higher refractive index than the second layer, and additionally comprising a substrate-adjacent layer (2) comprising at least one element from group 11 of the periodic table of elements.

2. Optical lens according to claim 1, characterized in that the layer closest to the substrate of the antireflective coating system has a layer thickness of at least 0.3 nm and / or at most 2 nm and / or is arranged on a lacquer layer (110) of the substrate.

3. Optical lens according to one of the preceding claims, characterized in that the layer closest to the substrate comprises the antireflective coating system Au.

4. Optical lens according to one of the preceding claims, characterized in that the layer closest to the substrate comprises the antireflective coating system Ag.

5. Optical lens according to one of the preceding claims, characterized in that the layer closest to the substrate comprises Cu.

6. Optical lens according to one of the preceding claims, characterized in that at least one of the first layers of the layer pairs is arranged between two second layers of the layer pairs; and / or at least one of the materials Ta2Os, Al2O3, Ti x O y, TiCh, ZrCh, Nd2Os, Pr2O3, PrTiOs, La2O3, Nb2Os, Y2O3, HfCh, InSn-Oxid, ZnS, Si3N4, MgO, CeO2, SC2O3; and / or has a refractive index of at least 1.6; and / or at least one of the second layers of the layer pairs is arranged between two first layers of the layer pairs; and / or at least one of the materials SiC>2, MgF2, SiO, silanes, siloxanes, a mixture comprising SiCh and Al2O3 and / or has a refractive index of less than 1.

6.

7. Optical lens according to one of the preceding claims, characterized in that the substrate has at least one support layer (100) made of mineral glass or plastic.

8. Optical lens according to claim 7, characterized in that the substrate has at least one intermediate layer (110) arranged between the support layer and the antireflective coating system.

9. Optical lens according to one of the preceding claims, characterized in that it has at least one cover layer (3) wherein the antireflective coating system is arranged between the cover layer and the substrate.

10. Optical lens according to one of the preceding claims, characterized in that it has at least one adhesive layer (210, 220, 230, 240).

11. Optical lens according to claim 10, characterized in that at least one adhesive layer (230) is arranged between the first and second layer of at least one of the layer pairs; and / or at least one adhesive layer (230) is arranged between a layer of one layer pair and a layer of the adjacent layer pair of the pair of adjacent layer pairs; and / or at least one adhesive layer (220) is arranged between the antireflective coating system and the layer (2) closest to the substrate; and / or at least one adhesive layer (210) is arranged between the substrate (1) and the layer (2) closest to the substrate.

12. Optical lens according to claim 10 or 11, characterized in that at least one adhesive layer (210, 220, 230, 240) of the optical lens has a layer thickness of at least 1 nm and / or at most 20 nm; and / or at least one adhesive layer (210, 220, 230, 240) of the optical lens comprises an inorganic material; and / or at least one adhesive layer (210, 220, 230, 240) of the optical lens comprises an organic material.

13. Optical lens according to one of the preceding claims, characterized in that the substrate has an optical correction and / or the optical lens is photochromic and / or colored and / or is an optical lens for eyeglasses.

14. Optical lens according to one of the preceding claims, characterized in that the anti-reflective coating system has a reflectivity for electromagnetic radiation of R < 4% in the direction of an optical axis (A) of the lens for at least one wavelength range between 400 nm and 760 nm.

15. Eyeglasses comprising at least one optical lens according to any of the preceding claims.

16. Method for manufacturing an optical lens according to one of the preceding claims, wherein the antireflective coating system is arranged on the first end face of the substrate.

17. Method according to claim 16, characterized in that at least one of the layer pairs is formed between the first and second layer and / or in the case of at least one pair of adjacent layer pairs between a layer of one layer pair and a layer of the adjacent layer pair of the pair of adjacent layer pairs and / or between the antireflective coating system and the layer closest to the substrate and / or between the substrate and the layer closest to the substrate by means of a sputtering process or physical or chemical vapor deposition.

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