LENTE REVESTIDA, EM PARTICULAR LENTE DE ÓCULOS, E MÉTODO PARA A PRODUÇÃO DE UMA CAMADA OMNIFÓBICA SOBRE UM CORPO DE LENTE

Abstract

One aspect of the invention relates to a coated lens, in particular a spectacle lens, having a lens body (2) consisting of a mineral lens or a plastic lens, a silicon oxide layer (4), which is arranged directly or indirectly on an area or surface of the lens body (2), and a slide-enhancing covalently bound omniphobic layer (6) which is formed on the silicon oxide layer (4), wherein the omniphobic layer (6) has at least one silicon organic compound. Another aspect of the invention relates to a method for producing an omniphobic layer on a lens body.

Description

1 / 33 “COATED LENS, IN PARTICULAR EYEGLASS LENS, AND METHOD FOR PRODUCING AN OMNIPHOBIC LAYER ON A LENS BODY”

[001] The present invention relates to a coated lens body, in particular a coated eyeglass lens.

[002] The state of the art reveals spectacle lenses that are provided with a top layer of PFAS (perfluorinated and polyfluorinated alkyl substances) to make them easy to clean. This is often achieved by applying a top layer material after the individual anti-reflective layers in a high-vacuum vapor deposition system. For several years, criticism of PFAS has been increasing because these chemicals, apart from their advantageous water and grease repellent properties, are not degraded in the environment and therefore accumulate more and more.

[003] Therefore, it is an object of the present invention to provide a coating for lens bodies that is easy to produce and compatible with the environment. The object is achieved by a lens body having the characteristics of claim 1, as well as by a method of producing such a lens body coated with the characteristics of claim 29. Preferred embodiments are the subject of the dependent claims.

[004] One aspect of the invention relates to a coated lens, in particular a spectacle lens, comprising: - a lens body made of mineral glass or plastic glass; - a layer of silicon oxide disposed indirectly or directly on a face or surface of the lens body; - an omniphobic layer with a slip-promoting covalent bond, which is formed over the silicon oxide layer, where the omniphobic layer has at least one organosilicon compound.

[005] Advantageously, a mechanically stable coating can be formed on the lens body, which can prevent the adhesion of both hydrophilic and oleophilic substances, in order to improve transparency through the lens, in particular eyeglass lenses.

[006] According to the invention, the lens body is not subject to any particular restriction. An object that can be used as optical material, for example, Petition 870250086411, dated 09 / 24 / 2025, p. 8 / 45 2 / 33 as an ophthalmic lens or as a spectacle lens, is preferably used as a lens body. However, the lens body is not limited to ophthalmic lenses and can be any transparent or optical object onto which, in particular, a coating can be applied. Concrete examples of this are glass, such as crown glass, mineral glass, window glass, flat glass, windshields or viewing windows, or elements of optical sensors, light sources or photographic lenses, or plastics, such as polyacrylates or ceramics.

[007] The term glass according to the invention refers generally to amorphous solids which, upon cooling in the glass transition temperature range, pass from a molten to a solid state without crystallizing, which have, in particular, a ratio of silicon dioxide, for example, quartz glass, corona glass, flint glass and borosilicate glass and are therefore also called mineral glass. However, according to the invention, a number of other transparent materials may also be understood by the term glass, for example, organic glasses or plastic glasses, for example, for eyeglasses, plastic plates, in particular made of acrylic glass for viewing windows in boxes, buildings and the like, or for transparent objects made of ceramics, such as, for example, the viewing glass of a heater or vitroceramic plates.However, the glass in the sense of the application may also comprise natural transparent mineral solid materials, such as, for example, crystalline silicon dioxide or thin-layered silicates, or natural glasses, such as, for example, moldavite or selenite. The lens body may be designed in a planar-parallel manner or in a plate or curved shape.

[008] One aspect relates preferably to viewing windows, in particular for housings of measuring devices, sensors, buildings, etc., with the additional features of claim 1. In particular, the viewing windows can be designed to be exposed to outdoor weather, for example, in camera housings positioned outdoors, so that contamination is advantageously reduced and the visibility of the camera is improved, for example. Sensors (optical) can also, for example, be immersed in a medium, wherein a lens body according to the invention delimits the sensor from the medium and protects it from it. Also in this case, the lens body according to the invention can protect the sensor from contamination. Thus, one aspect relates to a sensor (optical) or other passive or active electronic component with the additional features Petition 870250086411, dated 09 / 24 / 2025, p. 9 / 45 3 / 33 of claim 1. In addition, other weather-exposed lens bodies may be provided. Thus, some aspects relate to window glass, a covering glass for or of solar panels, a glazing of a vehicle, aircraft or vessel, or a lens body of a luminaire or a lighting means, respectively, with the additional features of claim 1. Lastly, lens bodies that are frequently touched, such as fingerprint readers, screens, smartphone screens, cups, cuvettes or other laboratory equipment, decorative glass objects (trinkets), may be provided, which are respectively provided with the additional features of claim 1 in order to be less susceptible to soiling, which improves function and visual appearance.

[009] The lens body preferably consists of a translucent or transparent plastic, for example, a transparent plastic substrate, which may or may not be treated. The lens body is formed, for example, substantially from polythiourethane, polymethyl methacrylate, polymethyl acrylate, polycarbonate, polyacrylate or polydiethylene glycol bisalicylate, where other transparent plastic materials may also be used. In particular, it is preferred that the lens body be formed substantially from an acrylate polymer, such as, for example, polymethyl methacrylate or polymethyl acrylate. The lens body may be designed, at least in sections, with substantially flat faces or surfaces and / or, at least in sections, with substantially curved faces or surfaces.

[010] Optionally, the lens body may already have one or more functional coatings. Suitable functional coatings include, for example, a primer coating to increase break resistance, a hard lacquer coating to increase scratch resistance, a non-stick coating or easy-clean coating, a conductive coating to improve antistatic properties, a mirror coating or multi-layer mirror coating, an anti-reflective coating or a multi-layer anti-reflective coating, a colored coating, etc.

[011] The lens body has a silicon oxide layer applied directly or indirectly to a face or surface of the lens body. The silicon oxide layer may be formed by evaporating silicon monoxide (SiO), silicon dioxide and / or silicon or a mixture thereof in a vacuum PVD process, wherein SiO Petition 870250086411, dated 09 / 24 / 2025, p. 10 / 45 4 / 33 Monomolecular silicon dioxide is formed in the gas phase (hence the term PVD, which stands for physical vapor deposition) and precipitates in a thin layer on the lens body, for example, optical lenses. Depending on the partial pressure of oxygen set in the process, the silicon oxide layer breaks down into silicon monoxide (SiO), low-valence silicon oxide (e.g., Si2O3), or silicon dioxide (SiO2), or a mixture of two or three of the aforementioned materials. Thus, the surface of the lens body or optical lenses is advantageously hardened, but, in particular, also prepared for covalent bonding with an omniphobic, slip-promoting layer that is formed on the silicon oxide layer.

[012] According to the invention, the term omniphobic is understood as dirt repellent or dirt adhesion reducer or liquid repellent. Advantageously, the omniphobic layer is hydrophobic and / or oleophobic, wherein the rejection of oleophilic and hydrophilic phases particularly effectively prevents contamination of the coated lens surface and allows easy cleaning of the coated lens.

[013] In this case, for example, easy cleaning of fingerprints from eyeglass lenses can be achieved. Similarly, the coated lens can also be used in optical sensors or cameras, whereby the sensors can be better protected from contamination and therefore incorrect measurements, and can also be cleaned more easily and thus put back into operation. Even when used as windshields or window glass, the coated lens according to the invention offers advantages in cleaning and thus increases road safety or reduces cleaning effort.

[014] The omniphobic layer has at least one organosilicon compound.

[015] Organosilicon compounds is the hypernym for compounds that have direct silicon-carbon (Si-C) bonds or in which carbon is bonded to silicon via oxygen, nitrogen, or sulfur atoms. Organosilicon compounds can be described by the general formula RnSiX4-n (with n from 1 to 4), where R represents different organic radicals, such as, for example, aliphates, aromatics, heterocycles. X represents different groups (see Table 1). Petition 870250086411, dated 09 / 24 / 2025, page 11 / 45 5 / 33 TABLE 1 X Group of materials H or R Organosilanes, for example, tetramethylsilane OH Organosilanos, for example, trimethylsilanol, Cl Organochlorosilanes Si-O Siloxanes Si-N Polysilazanes Si-C Carbosilanes

[016] The organosilicon compound (or compounds) may be a linear or open-chain compound. The at least one organosilicon compound in the omniphobic layer may have at least one carbon atom, at least one oxygen atom, at least one nitrogen atom, at least one halogen atom and / or at least one sulfur atom, each of which is bonded to an associated silicon atom.

[017] Preferably, the omniphobic layer has at least one siloxane, in particular a linear siloxane. Siloxanes are polymers with a repeating siloxane unit -Si-O-, wherein the silicon atom has two organic radicals R1 and R2, which are preferably alkyl groups. A preferred siloxane compound would be, for example, polydimethylsiloxane (PDMS, CAS 63148-62-9) with the chemical formula C2H6OSi, wherein the two organic radicals R1 and R2 each represent a methyl group (CH3). An omniphobic layer comprising PDMS as an organosilicon compound can be obtained by hydrolysis reaction using the monomer dimethyldimethoxysilane (CAS 1112-39-6) with the chemical formula Si(OCH3)2(CH3)2 as a precursor or starting substance, if necessary, with the use of an acid catalyst, a process in which polydimethylsiloxane is produced.

[018] Alternatively or in addition to at least one organosilicon compound, the omniphobic layer may also contain at least one silane or silanol. Preferably, the omniphobic layer may contain a linear or acyclic silane or a cyclic silane. The term silanes refers to a group of chemical compounds consisting of a silicon-hydrogen structure. The general molecular formula for linear or acyclic silanes (open-chain, also called catena-silanes) is SinH2n+2. Ring-shaped silicon-hydrogen compounds, also called cyclosilanes, have the general molecular formula SinH2n. Up to the Petition 870250086411, dated 09 / 24 / 2025, page 12 / 45 Currently, only unbranched and branched silanes with up to 8 silanes and cyclic silanes with 5 or 6 silicon atoms are known. All are colorless gases or liquids. Silanes are pyrophoric, meaning they burn in air. Reactivity decreases with increasing chain length. Even pentasilane no longer reacts independently with the oxygen content of the air. From heptasilane onwards, silanes cease to spontaneously ignite. Therefore, it is convenient to choose a silane with n greater than or equal to 7. Furthermore, long-chain silanes tend to decompose under the action of oxygen and / or solar radiation. The action of oxygen-free water is not critical, so they can be used in submersion conditions, for example, with sensors in pipelines. Compared to the original compounds, polynuclear silanes advantageously become significantly more stable by substitution with halogens or organic radicals.Preferably, the omniphobic layer has at least one silanol, in particular a linear silanol.

[019] In a preferred embodiment, the at least one organosilicon compound of the omniphobic layer consists of one or more functional groups, which are also referred to as so-called tail groups, which are responsible for the omniphobic properties, and one or more coupling groups, which are also referred to as so-called anchor groups or head groups, which are responsible for binding to the silicon oxide layer. In a development, the at least one organosilicon compound may also have other constituents, preferably at least one more molecular group, with particular preference, two or more molecular groups, as explained in the following paragraphs.

[020] The functional group or functional chain or tail group of the organosilicon compound has at least one alkyl group or an alkoxy group, represented by the structure -CnH2n+i- or -CnH2n+iO-, where n is an integer taking values ​​of 8 or greater, preferably 8 or greater. The properties of this alkyl group depend on its length or, strictly speaking, on the chain length of the alkyl group. This chain length is also generally referred to as the C-chain length, based on the number of carbon atoms contained therein. With regard to the length of alkyl or alkoxy chains, substances with a chain length greater than or equal to C8 are preferred, with particular preference for a chain length greater than or equal to Petition 870250086411, dated 09 / 24 / 2025, p. 13 / 45 7 / 33 11, as they allow the formation of SAMs (self-assembled monolayers) in addition to hydrophobic properties that are formed with greater resistance as the chain length increases. Advantageously, a longer alkyl chain in the tail group generates improved shielding of the coupling group with which the bonding to the substrate occurs. Good shielding advantageously leads to better resistance to cleaning, meaning that such a compound survives a plurality of wipes, where a wipe means the frictional movements typically present during the cleaning of such a lens body obtained in this way.

[021] Preferably, the organosilicon compound has at least one hydrolyzable group as a coupling group or head group, which can enter into a reaction with water, resulting in the separation of a leaving group by the formation of a low molecular weight compound. Advantageously, as a result of this, in the context of a hydrolysis reaction, the organosilicon compound can bond to hydroxyl groups (OH groups), present or formed in the silicon oxide layer of the lens body, to form the omniphobic layer, which causes the organosilicon compound to enter into a covalent bond with the silicon oxide layer of the lens body and, in this way, the omniphobic layer is formed in the lens body. Preferably, the at least one hydrolyzable group is a chlorine or ethoxy group, an amine, a silazane, an oxime or an acetoxy group, in particular, the hydrolyzable group is a methoxy group.The number of coupling groups can vary from one to three, where, instead of other head or coupling groups, other tail groups may also be present, i.e., omniphobic alkyl or alkoxy chains, which can cause increased hydrophobicity or better shielding.

[022] If an organosilicon compound has several alkyl or alkoxy groups as a tail group, the requirement with respect to chain length shall be understood in such a way that at least one of the alkyl or alkoxy groups of the organosilicon compound has an alkyl or alkoxy group whose chain length L1 meets the requirement with respect to the presence of 8 or more carbon atoms, that is, for the chain length C L1 of at least one alkyl or alkoxy group or the longest alkyl or alkoxy group of the organosilicon compound, is L1 > 8. Petition 870250086411, dated 09 / 24 / 2025, p. 14 / 45 8 / 33

[023] Preferably, the organosilicon compound hexadecyltrimethoxysilane (CAS 16415-12-6) may have or be of the formula CH3(CH2)15-Si(OCH3)3. More preferably, or also as another organosilicon compound in combination with the one mentioned above, the organosilicon compound octadecyltrimethoxysilane (CAS 3069-42-9) may have or be of the formula CH3(CH2)i7Si(OCH3)3. The chain length of the tail group, of the alkyl chain, in the cases indicated above, is C16 or C18. The organosilicon compounds mentioned above are methoxysilanes, wherein the organosilicon compound may alternatively or additionally contain chlorosilanes and / or ethoxysilanes, particularly preferably hexadecyltrichlorosilane, hexadecyltriethoxysilane, octadecyltrichlorosilane and / or octadecyltriethoxysilane.Alternatively, organosilicon compounds with an even longer alkyl chain can be used, particularly compounds with an alkyl chain length of C20 to C34, as they have higher resistance because, with increasing alkyl chain length, non-covalent interaction of hydrocarbon radicals is favored, which, to a greater extent, requires alignment or self-organization of the groups. Advantageously, a longer alkyl chain generates better hydrophobic and oleophobic properties and better resistance to cleaning.

[024] As mentioned above, in addition to at least one organosilicon compound, the omniphobic layer may also have a second additional organosilicon compound, that is, the omniphobic layer may have a mixture formed from at least two organosilicon compounds. This second organosilicon compound has at least one alkyl or alkoxy group as a tail group, represented by the structure -CnH2n+1- or -CnH2n+1O-, where n is an integer.Advantageously, due to the presence of at least two organosilicon compounds, which may differ, in particular with regard to their substance class, structure, head groups, tail groups and / or, preferably, with regard to the chain length of the tail groups, an omniphobic layer can be formed which, compared to an omniphobic layer with only one organosilicon compound, is distinguished by improved properties, such as, for example, greater resistance to cleaning and / or better or more pronounced hydrophobic and / or oleophobic properties.

[025] In order to be able to compare the organosilicon compounds contained in Petition 870250086411, dated 09 / 24 / 2025, page 15 / 45 9 / 33 The following mixture, with respect to the length of its tail group chain, uses the convention that, for such comparisons, the longest alkyl or alkoxy group in each case, with respect to its chain, is selected from the alkyl or alkoxy groups present in the respective organosilicon compound. The C L2 chain length of at least one tail group of the second organosilicon compound is not initially further restricted. Preferably, L2 is less than or equal to L1 and the difference with respect to the C chain length of the at least two compounds, ΔL, is calculated as ΔL = (L1 - L2) / L1.

[026] For a first organosilicon compound with a C tail group chain length greater than or equal to 8, i.e., L1 > 8, preferably greater than or equal to 11, the omniphobic layer can be formed as a mixture of this compound and at least one second, additional organosilicon compound, wherein the second organosilicon compound has a C L2 tail group chain length that differs only slightly in terms of the length of its respective longest alkyl or alkoxy group, or has a comparable chain length, so that ΔL is understood, in particular, to be less than or equal to 0.25, preferably less than or equal to 0.15, in particular less than or equal to 0.1.In general, the effort required to synthesize long-chain alkyl or alkoxy substances increases with increasing chain length, and the preparation of pure substances becomes increasingly difficult. That is, the substance to be synthesized may have ratios of longer and / or shorter chain lengths; in particular, it may have ratios of the (second) longest and / or (second) shortest chain lengths. Under the condition that a (longer) chain organosilicon compound does not need to be present in its pure form, but that the omniphobic layer can be formed from a mixture of two or more organosilicon compounds that differ only slightly in terms of their chain length, according to the definition above, good omniphobic properties can be obtained combined with an economical production method, which can be achieved with a reasonable amount of synthesis effort due to a reduced purity requirement for the synthesized substance.

[027] A mixture comprising, for example, octadecyltrimethoxysilane with a chain length C of L1 = 18 and hexadecyltrimethoxysilane with a chain length C of L2 = 16, wherein, Petition 870250086411, dated 09 / 24 / 2025, page 16 / 45 10 / 33 in this case, ΔL « 0.11, can be advantageously synthesized with little effort. Due to the comparable chain length, two organosilicon compounds of this type are present in such a mixture in a mixing ratio of long-chain compound and (more) short-chain compound of tail groups in approximately equal parts (e.g., parts by weight and volume ratios). As a modification, a mixing ratio is also possible in which the short-chain compound is present in excess compared to the long-chain compound. As a modification, a mixing ratio is also possible in which the long-chain compound is present in excess compared to the short-chain compound.

[028] For a first organosilicon compound with a C-length of the tail group greater than or equal to 8, i.e., L1 > 8, preferably greater than or equal to 11, the omniphobic layer can be formed as a mixture of this compound and at least one second, additional organosilicon compound, wherein the second organosilicon compound has a C-length of the tail group L2 that differs substantially from the first in terms of the length of its respective longest alkyl or alkoxy group, which is understood, in particular, as ΔL being greater than or equal to 0.5, preferably greater than or equal to 0.75, with particular preference greater than or equal to 0.9, in particular, at most equal to 1. The same can, combined in a mixture, form an omniphobic layer that has properties that are improved compared with an omniphobic layer that has only one organosilicon compound.In this case, by adding the second substance, which has a significantly shorter alkyl or alkoxy chain in the tail group, the positive effect can be obtained that this substance can cover areas on the surface of the lens body or the silicon dioxide layer placed over it, forming an omniphobic layer that cannot cover the first substance with a relatively long chain due to steric obstacles. This achieves a higher degree of coverage or more complete coverage of the lens body, resulting in a lens body with (or through the formation of) an omniphobic layer. As a result, improved omniphobic properties and better resistance to cleaning are achieved. In addition to the van der Waals interactions that occur between the alkyl chains of the tail groups of adjacent molecules, coupling groups also play a role. Petition 870250086411, dated 09 / 24 / 2025, p. 17 / 45 11 / 33 can additionally lead to the formation of covalent bonding crosslinks of the coupling groups of adjacent molecules, since not all coupling groups bind to the surface of the lens body or to a silicon oxide layer disposed on it. Both van der Waals interaction and crosslinking lead to shielding of the substrate surface and coupling groups, therefore the cleaning resistance of the omniphobic layer is improved.

[029] A first exemplary mixture for such would be a mixture with, as the first organosilicon compound, optionally octadecyltrimethoxysilane with a C-length of L1 = 18 or hexadecyltrimethoxysilane with a C-length of L1 = 16 mixed with trimethoxy(methyl)silane (CAS 118555-3) with the formula C4H12O3SO as the second organosilicon compound with a C-length of L2 = 1, that is, in other words, there is a mixture of a long-chain compound and a comparatively short-chain compound.A second exemplary mixture would be a mixture of, optionally, octadecyltrimethoxysilane with a chain length C of L1 = 18 or hexadecyltrimethoxysilane with a chain length C of L1 = 16 as a first organosilicon compound mixed with trimethoxyoctylsilane (CAS 3069-407 with the formula C11H26O3SO with a chain length C of L2 = 8 as a second organosilicon compound, resulting in a difference of ΔL « 0.56 or ΔL = 0.5, that is, in other words, there is a mixture of a long-chain compound and a comparatively short-chain compound. Due to the different chain lengths, two organosilicon compounds of this type are present in such a mixture in approximately equal parts. As a modification, a mixing ratio is also possible in which the short-chain compound is present in excess compared to the long-chain compound.As a modification, a mixing ratio is also possible in which the long-chain compound is present in excess compared to the short-chain compound.

[030] On the one hand, the organosilicon compounds mentioned above are preferentially suitable for the formation of the omniphobic layer, which have a substantially linear molecular structure, which means, in particular, that there is a presence of a substantially linear alkyl chain as a tail group.

[031] On the other hand, a non-linear organosilicon compound is also preferentially suitable for the formation of the omniphobic layer, which includes Petition 870250086411, dated 09 / 24 / 2025, page 18 / 45 12 / 33 organosilicon compounds whose molecular structure is non-linear, with, for example, at least one branch and / or a cyclic structure, in particular a ring structure, and / or a dipodal structure.

[032] With such branching, it is understood, on the one hand, the presence of a substance with an alkyl or alkoxy group as a tail group, which has a branch within that chain, such as, for example, the substance isobutyl(trimethoxy)silane or iso-octyl(trimethoxy)silane. The branching of isobutyl(trimethoxy)silane is caused by two methyl groups (CH3 groups) at the end of the alkyl chain. Iso-octyl(trimethoxy)silane has a branched structure due to three methyl groups (CH3 groups) at the end of the alkyl chain, as well as a side methyl group within the alkyl chain. On the other hand, this could also mean an organosilicon compound in which another additional alkyl group is present as a tail group, which is additionally linked to the Si atom (by the first alkyl group), such as, for example, the substance n-octadecylmethyldimethoxysilane (CAS 70-851-50-2 with the formula C21H46O2SO.Compounds branched in this way are distinguished by enhanced omniphobic properties, since, on the one hand, better shielding of the coupling group is present as a result of the branching (or branchings) and, on the other hand, the branching causes the presence of several tail groups, as a result of which omniphobic properties, in particular hydrophobic properties, are increased or improved.

[033] In addition to the branched compounds mentioned above, nonlinear compounds, in particular cyclic compounds with a ring structure, are also suitable, preferably as an organosilicon compound, optionally in pure form or mixed with a second, or several other, linear or nonlinear compounds to form such an omniphobic layer. Preferably, aromatic silanes and / or cyclic azasilanes are particularly suitable in this document, the former of which are distinguished by one (or several) aromatics, meaning an aromatic structure, within or at the end of the alkyl chain (or alkyl chains). Cyclic azasilanes have a cyclic structure containing a hydrogen atom and one or more alkyl or alkyl ether chains, in which a ring-opening reaction occurs upon linkage. In particular, the group of cyclic azasilanes is distinguished by a comparatively high vapor pressure, which preferentially allows gas-phase reactions.This also advantageously enables methods. Petition 870250086411, dated 09 / 24 / 2025, page 19 / 45 13 / 33 alternative production methods, in particular solvent-free methods, of the omniphobic layer with this compound (or compounds), such as, for example, vapor deposition methods familiar to those skilled in the art. Examples of compounds from the cyclic azasilane group would be N-methyl-aza-2,2,4-trimethylsylcyclopentane (CAS 18387-19-4) with the formula C7H17NSO or Nn-butyl-aza-2,2-dimethoxysylcyclopentane (CAS 618914-44-6) with the formula C9H21NO2SO. Examples of aromatic silane compounds would be 4-phenylbutyltrichlorosilane (CAS 17886-88-3) with the formula C10H13CI3SO or 3-phenoxypropyltrichlorosilane (CAS 60333-76-8) with the formula C9H11CI3OSO.

[034] On the other hand, a dipodal organosilicon compound is also preferentially suitable for forming the omniphobic layer. Dipodal organosilicon compounds are distinguished by two silicon atoms, each with one or more coupling groups, as described above, and one or more tail groups, as described above. Due to the presence of a greater number of coupling groups, bonding to the lens surface can be favored and thus the strength of the omniphobic layer can be improved. Compounds that are constructed in a dipodal fashion are, for example, 1,2-bis(trimethoxysilyl)decane (CAS 832079-33-1 with formula C6H35O6Si2), 1,8-bis(triethoxysilyl)octane (CAS 52217-604 with formula C2OH46O6Si2), 1,10-bis(trimethoxysilyl)decane (CAS 122185-09-5 with formula C6H35O6Si2) or bis(trimethoxysilylethyl)benzene (CAS 266317-71-9 with formula C6H3O6Si2).

[035] However, it would also be conceivable that the omniphobic layer had a mixture comprising at least one compound with a substantially linear molecular structure and one compound with a non-linear molecular structure, or a mixture of at least two compounds that both have, respectively, a non-linear structure.

[036] It would also be possible for the omniphobic layer to have a mixture of at least two organosilicon compounds, wherein at least one of the organosilicon compounds has at least one pentafluorophenyl group, represented by the structure -C6F5. The number of pentafluorophenyl groups is not further limited upwards, in which, as a rule, only one of these groups is present and ensures that the hydrophobic and / or oleophobic properties are imparted to the compound (and therefore to the omniphobic layer subsequently formed). The organosilicon compound does not contain a trifluoromethyl group or a difluoromethylene group and, Petition 870250086411, dated 09 / 24 / 2025, p. 20 / 45 14 / 33, therefore, is not affected by any potential ban on substances containing PFAS. Preferably, a mixture of at least two organosilicon compounds is present, one of which has at least one pentafluorophenyl group and the second compound does not, or the other compounds do not have pentafluorophenyl groups. Due to the molecular size of such a pentafluorophenyl group, a steric hindrance may occur when coating a surface to form an omniphobic layer, which is why inconsistent, incomplete, or only partial coating occurs.Using a mixture of at least two organosilicon compounds, only one of which has a pentafluorophenyl group, the compound with this group can be stabilized by the other compound or compounds, so that the aforementioned directional orientation advantageously occurs, in which, in particular, the pentafluorophenyl group points away from the surface to be coated, in order to obtain the best possible omniphobic properties. A mixture preferably comprises, for example, pentafluorophenoxyundecyltrimethoxysilane (CAS 944721-47-5 with the formula C2oH3iF5O4Si) as a first organosilicon compound with a C1 chain length of L1 = 11 and, optionally, trimethoxy(methyl)silane with a C2 chain length of L2 = 1 or trimethoxy-n-octylsilane with a C2 chain length of C2 = 8 as a particularly preferred second organosilicon compound.

[037] Preferably, the omniphobic layer forms a contact angle with water of at least 100° and a contact angle with hexadecane of at least 25°, even after more than 1000 rubs, preferably after more than 2000 rubs, with particular preference after more than 6000 rubs. Preferably, the omniphobic layer forms a contact angle with water of 100° to 110° and with hexadecane of 35° to 45° immediately after production, i.e., even after the 2000 rubs mentioned above, there is only a slight change in this value.

[038] The omniphobic layer preferably has a mixture of two, with particular preference, of two or several, in particular a plurality of organosilicon compounds, which are formed as characterized above and by the combination of different organosilicon compounds, which have different alkyl or alkoxy chains, or of different lengths, and / or which have different molecular structures (linear, branched, ring-shaped, cyclic, dipodal), layers Petition 870250086411, dated 09 / 24 / 2025, page 21 / 45 15 / 33 omniphobic individuals can be formed with advantageous properties.

[039] Without limitation thereto, some preferred embodiments are given below, in which the invention is not expressly limited thereto, but these preferred embodiments are intended merely to serve as examples of the numerous possible combinations.

[040] According to a preferred embodiment, the omniphobic layer comprises, as organosilicon compounds, a mixture of hexadecyltrimethoxysilane compounds with a C16 chain length and octadecyltrimethoxysilane compounds with a C18 chain length. An omniphobic layer having the aforementioned mixture is characterized by improved omniphobicity and durability compared to the individual compounds.

[041] According to another preferred embodiment, the omniphobic layer has, as organosilicon compounds, the hexadecyltrimethoxysilane compound with a C16 chain length mixed with at least one compound that optionally has a C1 or C3 chain length. By combining a long-chain compound with a compound that has a short alkyl chain of a methyl group (CH3 group) or a propyl group (CH2-CH2-CH3), it is advantageously possible to obtain improved coverage of the surface to be provided with the omniphobic layer.

[042] According to another preferred embodiment, the omniphobic layer has, as organosilicon compounds, the octadecyltrimethoxysilane compound with a C18 chain length mixed with at least one compound that optionally has a C1 or C3 chain length. By combining a long-chain compound with a compound that has a short alkyl chain of a methyl group (CH3 group) or a propyl group (CH2-CH2-CH3), it is advantageously possible to obtain improved coverage of the surface to be provided with the omniphobic layer.

[043] According to another preferred embodiment, the omniphobic layer has, as its first organosilicon compound, a compound having a substantially linear alkyl or alkoxy chain, preferably hexadecyltrimethoxysilane or octadecyltrimethoxysilane, mixed with a second organosilicon compound having a branched alkyl or alkoxy chain, preferably isobutyl(trimethoxy)silane or iso-octyl(trimethoxy)silane. This combination of a compound with an alkyl chain Petition 870250086411, dated 09 / 24 / 2025, p. 22 / 45 16 / 33 or substantially linear alkoxy and a compound with a branched chain is advantageously characterized by improved properties, in particular improved omniphobicity and improved strength, since the branched alkyl or alkoxy chain leads, on the one hand, to better shielding of the coupling group and, on the other hand, to greater layer durability.

[044] According to another preferred embodiment, the omniphobic layer has, as the first organosilicon compound, a compound having a substantially linear alkyl or alkoxy chain, preferably hexadecyltrimethoxysilane or octadecyltrimethoxysilane, mixed with a second organosilicon compound having an annular or cyclic structure, preferably this second compound is an aromatic silane such as 4-phenylbutyltrichlorosilane or 3-phenoxypropyltrichlorosilane, with particular preference, this second compound is a cyclic silane, in particular a cyclic azasilane, such as N-methyl-aza-2,2,4-trimethylsylcyclopentane or Nn-butylaza-2,2-dimethoxysylcyclopentane.This combination of a compound with a substantially linear alkyl or alkoxy chain and a compound with a ring or cyclic chain is advantageously characterized by an increase in vapor pressure due to the increase in molecular weight of the ring or cyclic alkyl or alkoxy chain and, consequently, is particularly suitable for evaporation methods in the formation or production of the omniphobic layer.

[045] According to another preferred embodiment, the omniphobic layer has, as the first organosilicon compound, a compound having a substantially linear alkyl or alkoxy chain, preferably hexadecyltrimethoxysilane or octadecyltrimethoxysilane, mixed with a dipodal silane, preferably mixed with 1,2-bis(trimethoxysilyl)decane, 1,8-bis(triethoxysilyl)octane, 1,10-bis(trimethoxysilyl)decane or bis(trimethoxysilylethyl)benzene. Such a mixture is advantageously characterized by improved coating durability, as more bonding possibilities are available due to the dipodal structure.

[046] According to another preferred embodiment, the omniphobic layer has hexadecyltrimethoxysilane or octadecyltrimethoxysilane mixed with a siloxane, preferably mixed with polydimethylsiloxane (PDMS). Advantageously, such a mixture is characterized by improved omniphobic properties, good adhesion to the lens body and, associated with this, the advantageous effect of improved resistance.

[047] According to another preferred modality, the omniphobic layer Petition 870250086411, dated 09 / 24 / 2025, page 23 / 45 17 / 33 has at least docosyltriethoxysilane (CAS 1604813-39-9) with the chemical formula C28H60O3Si with a C chain length of C22 as the organosilicon compound. These long-chain compounds are not commercially available in pure form, which is why docosyltriethoxysilane is usually a mixture of substances with C chain lengths from C18 to C24, preferably from C20 to C24. Very good omniphobic properties can advantageously be achieved with an omniphobic layer that has docosyltriethoxysilane as the organosilicon compound, as the omniphobic properties increase as the chain length increases.

[048] Another aspect of the invention relates to a method for producing an omniphobic coating on a lens body comprising the following steps: (i) provide a lens body; (ii) to form an omniphobic, slip-promoting layer, in particular in accordance with the aspect of the invention mentioned above;

[049] The first step in the method for producing an omniphobic coating on a lens body comprises providing a lens body. An object that can be used or provided as optical material, for example, as an ophthalmic lens or as a spectacle lens, is preferably used as the lens body. However, the lens body is not limited to ophthalmic lenses and can be any transparent or optical object on which, in particular, a coating can be applied. Concrete examples of such are glasses, such as crown glass, mineral glass, window glass, flat glass, windshields or viewing windows or elements of optical sensors, light sources or photographic lenses or plastics, such as polyacrylates or ceramics.

[050] The lens body preferably consists of a translucent or transparent plastic, for example, a transparent plastic substrate, which may or may not be treated. The lens body is formed, for example, substantially from polythiourethane, polymethyl methacrylate, polymethylacrylate, polycarbonate, polyacrylate or polydiethylene glycol bisalicylate, where other transparent plastic materials may also be used. In particular, it is preferred that the lens body be formed substantially from an acrylate polymer, such as, for example, polymethyl methacrylate or polymethylacrylate. The lens body may be Petition 870250086411, dated 09 / 24 / 2025, page 24 / 45 18 / 33 designed, at least in sections, with substantially flat faces or surfaces and / or, at least in sections, with substantially curved faces or surfaces.

[051] Optionally, the lens body may already have one or more functional coatings. Suitable functional coatings include, for example, a primer coating to increase break resistance, a hard lacquer coating to increase scratch resistance, a non-stick coating or easy-clean coating, a conductive coating to improve antistatic properties, a mirror coating or multi-layer mirror coating, an anti-reflective coating or a multi-layer anti-reflective coating, a colored coating, etc.

[052] The lens body may be supplied in round (raw) form, in particular with regard to its subsequent use as a lens or spectacle lens (ophthalmic), or it may have already been sheared, meaning that the lens body has already undergone a stage of the edge forming or edge processing process and is no longer present in round (raw) form, but a form which deviates from that which is now presented, in particular one which, due to its subsequent use as a lens or spectacle lens (ophthalmic), has a predetermined form which deviates from that which is now presented.

[053] Preferably, the lens body to be provided in the first step of the method already has a silicon oxide layer applied indirectly or directly to a face or surface of the lens body. If the lens body to be provided in the first step of the method does not have such a silicon oxide layer, then, in a development of the method, in this first step of the method, a silicon oxide layer may first be applied or applied or formed, directly or indirectly, on a face or surface of the lens body. The silicon oxide layer may be formed by evaporation of silicon monoxide (SiO), silicon dioxide and / or silicon or a mixture thereof in a vacuum PVD process, wherein monomolecular SiO is formed in the gas phase (hence the term PVD process for physical vapor deposition) and precipitates in a thin layer on the lens body, for example, optical lenses.Depending on the partial pressure of oxygen set in the process, the silicon oxide layer splits into silicon monoxide (SiO), low-valence silicon oxide (e.g., Si2O3), or silicon dioxide (SiO2), or a mixture of two or three of these. Petition 870250086411, dated 09 / 24 / 2025, page 25 / 45 19 / 33 materials mentioned above. Thus, the surface of the lens body or optical lenses are advantageously hardened, but, in particular, also prepared for a covalent bond with an omniphobic slip-promoting layer, which is formed in the silicon oxide layer.

[054] The second step of the method, which follows the first step of the method, comprises forming an omniphobic slip-promoting layer on the lens body. In this step of the method, an omniphobic slip-promoting layer, in particular an omniphobic slip-promoting layer according to the previous aspect of the invention, is formed on the lens body provided in the previous step of the method, or (at least) on a silicon oxide layer disposed indirectly or directly on its faces or surfaces.In other words, after carrying out this step of the method, there is a lens body, in particular a coated lens body or coated glass or coated spectacle lens, which has an omniphobic layer, preferably distinguished by having at least one organosilicon compound, and this omniphobic layer gives the lens body preferably hydrophobic and / or oleophobic properties, preferably a contact angle with respect to water of 100° to 110° and 35° to 45° with respect to hexadecane, determined immediately after production or formation.

[055] Preferably, the formation of the omniphobic layer may comprise the application of the pure organosilicon compound (or compounds) or in solution that form the omniphobic layer, for example, by splashing or immersion of the lens body (also called immersion coating). If the omniphobic layer to be formed is formed from a mixture comprising at least two or more organosilicon compounds, these compounds are mixed in a solution, with particular preference in an isopropanol solution, according to the mixing ratio to be obtained.The solution preferably contains at least one of the following substances: an acid, in particular sulfuric acid, an organic solvent, preferably a non-cyclic alcohol (in particular ethanol or isopropanol), an ether (in particular tetrahydrofuran (C4H8O)), dimethylformamide (C3H7NO), dimethyl sulfoxide (C2H6OS), hexane, decane, hexadecane, octadecane, chloroform, diiodomethane (CH2I2), dichloromethane, or a cyclic solvent, such as toluene (C7H8) or xylenol (in particular 2,5-xylenol). The solution preferably contains toluene (C7H8), with particular preference for isopropanol (C3H8O). Petition 870250086411, dated 09 / 24 / 2025, page 26 / 45 20 / 33 Instead of splashing or immersing the lens body, it is also possible to rub the organosilicon compound(s) onto the surface of the lens body to be coated. For this purpose, for example, a towel or cloth can be moistened, either by splashing or soaking with the organosilicon compound(s) or by immersion in a solution containing the organosilicon compound(s). The organosilicon compound(s) is then applied, distributed, or rubbed onto the surface of the lens body by moistening the surface of the lens body to be coated with the soaked towel or cloth. The exposure time can be several hours, preferably up to 1 hour, where typical exposure times are a few minutes to a few seconds. Preferably, the exposure time is 1 to 5 minutes, more preferably less than 3 minutes, with particular preference for less than 1 minute, in particular less than 10 seconds.Advantageously, particularly economical production processes can be carried out with correspondingly short exposure times, allowing for high throughput over short exposure times and, in particular, can be carried out in a (partially) automated manner, preferably as part of an already existing (partially) automated production line. Advantageously, the method can maintain a cycle time predetermined by an existing production line through correspondingly short exposure times, in the range of seconds to minutes, or the method can be adapted to a predetermined cycle time by appropriate selection of the exposure time. Advantageously, coating formation by wetting or immersion can be carried out in a simple manner.In a development of the same, a temperature-controlled solution may preferably also be used, that is, a solution according to the specifications mentioned above, which is heated to a predefined temperature in order to accelerate the bonding reaction in this way. In a further development, in particular alternatively or additionally, a catalyst, preferably an acid catalyst, may also be provided in order to advantageously influence or accelerate the bonding reaction in this way. Preferably, the wetting or immersion may also occur twice, three times or several times, in particular with a time interval which may, more preferably, be sized in such a way that the surface of the lens body dries partially or completely in the interim. Petition 870250086411, dated 09 / 24 / 2025, page 27 / 45 21 / 33

[056] Preferably, the formation of the omniphobic layer may comprise an evaporation method, in particular a vapor deposition or evaporation method carried out in a high vacuum coating system under vacuum conditions, preferably at a pressure less than or equal to 10-4 mbar, with particular preference at a pressure less than or equal to 10-5 mbar. In this case, as a rule, a tablet or pill is present as a carrier, which, in addition to other constituents, as a carrier material, for example, has the organosilicon compound (or compounds). Such carrier material may be, for example, porous ceramic bodies or metallic bodies, preferably made of stainless steel and / or copper, filled with steel wool. Due to their large surface area, these carrier materials can store liquids well.Thus, it is possible to store the organosilicon compound (or compounds) in liquid form in such carrier materials and, as a rule, at least 10 mg, preferably between 45 mg and 300 mg, with particular preference between 90 mg and 270 mg are stored therein. At least one organosilicon compound or a mixture of several organosilicon compounds may be present stored therein, either pure or in solution, i.e., with a suitable solvent. These carriers are preferably heated in a thermal evaporator, preferably by the thermal power that falls on an ohmic resistance at a current intensity between 4 and 6 amperes, as a result of which the substance is evaporated, and the vapor formed containing the organosilicon compound (or compounds) is deposited as a precipitate, with the formation of the omniphobic layer. Alternatively, heating can also occur by means of an electron beam.If a lens body (or bodies) is exposed to this vapor precipitation, the organosilicon compound (or compounds) contained in the precipitate is deposited on its surface. In this way, an omniphobic layer is formed on a lens body (or bodies) by means of a method, in particular thermal evaporation. Through proper support or orientation, it can be ensured that vapor precipitation occurs preferentially on one (or the) surface of the lens body (or surfaces) on which a silicon oxide layer is disposed. In general, such an omniphobic layer has a physical layer thickness of a few to about 50 nanometers, in particular, a layer thickness between 5 and 25 nanometers. The growth of the omniphobic layer is termed... Petition 870250086411, dated 09 / 24 / 2025, page 28 / 45 22 / 33 rate and expressed in nanometers per second, is preferably less than 2 nm / s, in particular less than or equal to 1.5 nm / s. Therefore, it can be advantageously ensured that the omniphobic layer does not grow too fast and that, in this way, the most homogeneous coverage possible occurs, in particular without gaps.

[057] In addition to the two methods mentioned, such as wetting with a solution containing the organosilicon compound (or compounds) by splashing with such solution or immersion in such solution and / or an evaporation method, all other usual methods familiar to those skilled in the art are also conceivable. Thus, the organosilicon compound (or compounds) can also be applied, for example, by spray coating and / or also by spin coating. Depending on the choice of method, different solvents and / or additional constituents are added to the solution containing the organosilicon compound (or compounds) to modify properties such as viscosity, surface tension and / or solids content.It would also be conceivable to apply or form the omniphobic layer containing the organosilicon compound (or compounds) by a method such as atomic layer deposition, whereby, in particular, a very homogeneous formation of the omniphobic layer can be achieved.

[058] The method preferably has an optional additional step, comprising a pretreatment or activation of the provided lens body, in particular, this step comprises the formation of OH-reactive groups, preferably the formation of OH-reactive groups on the silicon oxide layer disposed on (at least) one face or surface of the lens body. Such an optional pretreatment step is preferably carried out after the lens body has been provided and before an omniphobic layer is formed. Advantageously, an improvement in the adhesion or adherence of the omniphobic layer to the lens body can be achieved in this way, because the covalent bonding of the coupling groups of the organosilicon compound(s) of the omniphobic layer is promoted, in the context of a hydrolysis reaction, through the formation of OH-reactive groups, whereby, in turn, an improved strength of the omniphobic layer is advantageously achieved.Preferably, such a pretreatment may comprise an activation method such as plasma and / or ionic treatment. Plasma treatment is preferably used, optionally Ar-plasma (90 s / 120 V 10sccm Ar) or O2-plasma (90. Petition 870250086411, dated 09 / 24 / 2025, page 29 / 45 23 / 33 s / 120 V 10 sccm of Ar, 10 sccm of O2). The silane or organosilicon compound contained in the solution enters into a bond (covalent (or covalent bonds)) with the silicon oxide layer on the lens body. As a result, they are bonded to the silicon oxide layer and locally fixed, so that a coating is formed on the lens body, which is facilitated, in particular, by the formation of reactive OH groups. For long coating durability, a good chemical bond to the lens body is necessary. A silicon oxide layer can be applied to lens bodies by flame coating, vapor deposition, etc., and a plasma treatment can be performed to form OH groups. For this purpose, a plasma treatment (at atmospheric pressure) on mineral glass can be used.In both cases, the goal is the formation of OH-reactive groups on the surface of the lens body, to which the coating to be applied subsequently binds chemically. This pre-treatment usually takes a few minutes, preferably between 60 and 120 seconds, depending on the intensity of the plasma or ion treatment.

[059] The method preferably has an optional additional method step, preferably downstream of the omniphobic layer formation step, in which the (coated) lens body is cleaned or rinsed with a solvent, for example toluene or isopropanol, or with water (demineralized or deionized). Advantageously, particularly if this method step is carried out after the omniphobic layer formation step, excess material, in particular excess organosilicon compounds that have not bonded (covalently) to the lens body, can be removed in this way. In particular, in combination with a gas-phase physical deposition method with carrier material masses greater than 100 mg, in particular equal to or greater than 200 mg, it has been found that downstream cleaning or scrubbing to remove excess unbound material leads to improved properties, such as increased strength or durability of the omniphobic layer.

[060] Preferably, the method has an optional additional method step in which the (coated) lens body is dried or tempered. Depending on the volatility of the solvent used and, if necessary, a processing time to be met, it is preferable that the drying process occurs primarily to solidify the omniphobic layer formed, optionally in Petition 870250086411, dated 09 / 24 / 2025, page 30 / 45 24 / 33 room temperature or in a drying device designed for this purpose, for example, in a tempering oven. Preferably, subsequent drying or tempering takes place at temperatures below 100 °C in order, in particular, not to damage lens bodies made of plastic materials, as plastics are known to have lower heat resistance than, for example, mineral glasses or semiconductors. In particular, the preferred plastic materials for plastic lenses or spectacle lenses lose their mechanical strength at temperatures above 100 °C, particularly at temperatures of 150 °C or more, which is why, in particular, a temperature of around 50 °C is particularly preferable to avoid damaging the coated plastic lens body. The duration of the drying step is from a few minutes to several hours, preferably between 1 minute and 10 hours, with particular preference for between 5 and 60 minutes.

[061] It should be mentioned at this point that the optional steps of the method can be arranged in any order and that, in the presence of both optional steps of the method, for example, both a sequence of the method with the steps supply / (pre-treatment or activation) / forming / drying / cleaning and a sequence with the steps supply / (pre-treatment or activation) / forming / cleaning / drying are on an equal footing, and the choice of the preferred sequence depends on different factors, such as, for example, the organosilicon compound (or compounds) applied in the method to form the layer, as well as the solvents and, in particular, also the concentration or quantity of carrier material.Naturally, a (sequential) order of the method would also be conceivable, in which the supplied lens body is first cleaned (or moistened) after supply, optionally (pre-)dried, and then the omniphobic layer formation occurs, optionally supplemented by optional downstream steps such as cleaning and drying or drying and cleaning, respectively.

[062] By means of the proposed method and, if necessary, advantageous development(s) thereof, a given lens body can be produced or provided with an omniphobic layer or such an omniphobic layer, in particular an omniphobic layer according to a preceding aspect of the invention, can be formed in a given lens body. Needless to say, although there is always reference to a lens body in the singular in the steps of the method, the proposed method can be expanded without additions to multiple lens bodies. Petition 870250086411, dated 09 / 24 / 2025, page 31 / 45 25 / 33 lens, in particular a plurality of lens bodies, to those skilled in the art, and thus a method is also explicitly proposed that can provide a plurality or diversity of lens bodies with an omniphobic layer or form such a layer on them in a particularly economical way, in order to obtain a plurality of coated lenses, in particular a plurality of coated spectacle lenses.

[063] An example method for producing spectacle lenses could include the following steps:

[064] Mineral glass or glass-plastic lenses or lens bodies can be hard-lacquered and coated with a multi-layer anti-reflective coating in high-vacuum vapor deposition facilities. After the last individual layer of silicon oxide (in particular SiO2), the surfaces are irradiated in the vapor deposition facility with a plasma or ion source.

[065] The process parameters of this plasma treatment are selected so that the contact angle with H2O of the treated surface is significantly reduced by the formation of polar OH groups. However, the surface should not be visibly damaged, i.e., the reflective color of the lens body should be substantially unchanged, and the roughness and scattered light should not increase significantly or visibly. The resistance to cleaning, to be determined later, should be as good as possible.

[066] The process parameters in a vapor deposition plant depend on the type of plant, and the determination of the duration, bias voltage (also called acceleration voltage), discharge current, argon flow, oxygen flow, the choice of ion source and the duration of activation of that ion source and the voltage and current intensity during operation are parameters whose determination is within the scope of professional action and needs to be tested accordingly based on calculations and empirical values.Typical process parameters that are preferred for plasma treatment in a vapor deposition plant, preferably type A904 (manufacturer: Leybold) with an APS source (APS: Advanced Plasma Source, i.e., a plasma source), have a duration of about 50 s to 70 s, in particular about 60 s, a bias voltage: from about 100 V to about 140 V, in particular about 120 V, a discharge current of about 25 A to about 35 A, in particular. Petition 870250086411, dated 09 / 24 / 2025, pp. 32-45 26 / 33 of approximately 30A, an argon flow of approximately 5 sccm, approximately 15 sccm, in particular approximately 10 sccm (sccm are standard cubic centimeters per minute).

[067] Typical process parameters in another preferred vapor deposition plant of the Syrus 1105 type (manufacturer: Leybold) with the Mark-II ion source have a duration of about 100 s to 150 s, in particular about 120 s, an anodic voltage of about 100 V to about 180 V, in particular about 140 V, a discharge current of about 1 A to about 3 A, in particular about 2 A, an argon flux of about 2 sccm to about 10 sccm, in particular about 5 sccm (sccm are standard cubic centimeters per minute).

[068] The numerical values, which are indicated by approximately, may preferably deviate by + / - 10% from the indicated value, with particular preference by + / - 5% from the indicated value, with particular preference by + / - 2% from the indicated value and, in particular, be exactly the indicated value. This applies to all numerical values ​​so designated in this application.

[069] After treatment in the vapor deposition facility, the facility is ventilated, the lenses are removed and immersed in basins with the solution in suitable holders. Preferably, the solution can have a temperature of 15 degrees Celsius to 40 degrees Celsius, with particular preference, around 20 degrees Celsius, so that the solution temperature advantageously corresponds approximately to the ambient temperature and no heating or cooling is necessary.

[070] The solution preferably contains all the constituents so as to perform an acid-catalyzed polycondensation of a silane or an organosilicon compound, for example, hexadecyltrimethoxysilane, on the surface of the lens body.

[071] The organosilicon compound (or compounds) or silane may or can be applied, respectively, pure or as a solution in toluene or isopropanol, preferably by an immersion or submersion method. A typical exposure time in this document is a few minutes, preferably 1 to 5 minutes, more preferably less than 3 minutes, in particular about 5 seconds. As a modification thereof, significantly longer exposure times would also be conceivable, in particular exposure times in the range of several hours.

[072] After removing the lens body from the immersion bath, drying can Petition 870250086411, dated 09 / 24 / 2025, pp. 33 / 45 27 / 33 occur at room temperature or at higher temperatures. Polycondensation or polymerization of the coating can occur in solution and / or during drying. Therefore, environmental conditions influence polymerization and, consequently, the coating result. The drying temperature is preferably below about 50 degrees Celsius, more preferably between 25 degrees Celsius and 45 degrees Celsius. The relative humidity of the ambient air during drying is preferably below 50%, more preferably between about 20% and about 40%.

[073] The coated lens body can be cleaned after drying, for example, by means of (demineralized) water and / or isopropanol and / or toluene and / or alcohol or by rubbing. Immersion and drying can be repeated once, twice or several times.

[074] The following quality criteria are met by the smooth coating:

[075] The water contact angle is significantly above 90 degrees, generally in the range of 95 to 110 degrees. The coating can be cleaned, at least under everyday conditions, much more easily than a SiO2 surface.

[076] The embodiments of the invention are described in more detail below with reference to the figures. Needless to say, the present invention is not limited to the embodiments shown in the figures, and the individual features of different embodiments can be combined into additional embodiments within the scope of the appended claims. Identical reference numerals indicate identical or recurring elements. They are shown: - in Figure 1, a cross-section according to a first embodiment of a coated lens body, in which the omniphobic layer has an organosilicon compound; - Figure 2 shows a schematic representation of an organosilicon compound; - in Figure 3, a cross-section of a second embodiment of a coated lens body, in which the omniphobic layer comprises a mixture of two organosilicon compounds with a comparable C chain length; - in Figure 4, a cross-section of a third embodiment of a coated lens body, in which the omniphobic layer comprises a mixture of two organosilicon compounds with different C chain lengths; - in Figure 5, a schematic drawing of a method for the production of Petition 870250086411, dated 09 / 24 / 2025, pages 34 / 45 28 / 33 an omniphobic coating on a lens body; - In Figure 6, a schematic drawing of a development of the method from Figure 5 is shown, with optional steps of the method, which are drawn in dashed outlines.

[077] Figure 1 shows a cutaway view according to a first embodiment through a lens coated with a lens body 2, a silicon oxide layer 4 and an omniphobic layer 6. In the preferred embodiment shown, the lens body 2 is designed as an ophthalmic lens or as a semi-product for spectacle lenses 2. As a rule, transparent plastic substrates are used for this purpose, which can be formed, for example, substantially from polythiourethane, polymethyl methacrylate, polymethyl acrylate, polycarbonate, polyacrylate or polydiethylene glycol bisalicylate.

[078] The lens body 2 of the embodiment shown is already provided with at least one functional layer 3, for example, a primary coating, a hard layer, a conductive layer, an anti-reflective layer, a colored layer, a photochromic layer or a combination thereof, etc.

[079] The lens body 2 was further fitted with a silicon oxide layer 4, in particular silicon dioxide, which, in the preferred embodiment shown, is disposed indirectly, in this case by means of the functional layer 3, on the (preferably convexly curved) face of the lens body 2. The silicon oxide layer can preferably be formed or vapor-deposited together with the functional layer 3 in a PVD process within an installation. Advantageously, the silicon oxide layer can thus be produced simply in the normal process of producing spectacle lenses.In order to improve the adhesion of the omniphobic layer, after the application of the silicon oxide layer 4, a plasma treatment is carried out with a pure argon plasma using an argon flow of 10 s / cm and a bias voltage of 120 V for a period of 90 s, with the aim of forming OH-reactive groups on the surface of the silicon oxide layer 4 as a bonding partner for the covalent bonding of the omniphobic layer 6.

[080] The omniphobic layer 6 is formed by wetting the silicon oxide layer 4 with a solution containing hexadecyltrimethoxysilane as the preferred organosilicon compound in isopropanol. The exposure time is approximately 2 minutes. The lens body is then rinsed with isopropanol, in particular. Petition 870250086411, dated 09 / 24 / 2025, pages 35 / 45 29 / 33 for the removal of constituents from unbound compounds, in which a stable omniphobic layer 6 is formed on the lens body.

[081] Figure 2 shows a schematic representation of hexadecyltrimethoxysilane as an organosilicon compound 8 preferentially forming an omniphobic layer 6 on a lens body 2, which, from its silicon atom 801, has three methoxy groups as coupling groups 802 for linkage and an alkyl chain having sixteen carbon atoms as a functional group 803, responsible for the omniphobic properties. The coupling groups 802 may also be called head groups and are generally hydrolyzable groups, preferably chlorine groups, with particular preference for ethoxy groups, in particular alkoxy groups. The functional group 803 is also called a tail group and is generally an alkyl or alkoxy chain having at least 8 carbon atoms or, in other words, having a chain length of C8, based on the carbon atoms.The designations head group and tail group indicate the orientation of hexadecyltrimethoxysilane 8 in the formation of the omniphobic layer 6, in which hexadecyltrimethoxysilane 8 binds to the silicon oxide layer 4 arranged on the lens body 2 by means of one (or several or all) of the head or coupling groups 802, that is, the coupling or head groups 802 are oriented towards the lens body 2 in the preferred arrangement, while the tail group 803 is oriented away from the lens body 2. As a result, on the one hand, the binding to the lens body 2 (or to the silicon oxide layer 4 arranged on the lens body 2) is achieved, and on the other hand, compound 8 with its alkyl chain of the tail group 803 can achieve the desired omniphobic effect.

[082] Figures 3 and 4 show other embodiments of the coated lens body 2 shown in Figure 1. For this reason, only the differences are described below and, in the case of elements with the same or recurring reference numbers, reference is made to the explanation already given above.

[083] Figure 3 shows a cross-section according to a second embodiment, in which the omniphobic layer 6 has a mixture comprising octadecyltrimethoxysilane as the preferred compound for the first organosilicon compound 81 and hexadecyltrimethoxysilane as the preferred compound for the second organosilicon compound 82. Octadecyltrimethoxysilane has a C L1 chain length of L1 = 18 and hexadecyltrimethoxysilane, a length Petition 870250086411, dated 09 / 24 / 2025, pages 36 / 45 30 / 33 of the C L2 chain of L2 = 16, that is, there are two organosilicon compounds in this mixture that have comparable chain lengths, and the difference ΔL is ΔL « 0.11, so the two compounds can advantageously stabilize each other due to their comparable chain length. In this way, an omniphobic layer is formed in which, by mutual stabilization, in particular the tail groups, which determine the omniphobic properties, are present stably oriented, oriented away from the surface of the silicon oxide layer 4. The two compounds are present in the mixture in a 1:1 ratio, that is, the two compounds are present in the mixture in equal parts.Omniphobic layer 6 is formed by wetting silicon oxide layer 4 with an isopropanol solution, where isopropanol acts as the solvent, and the solutes are a mixture of equal parts octadecyltrimethoxysilane as the preferred compound for the first organosilicon compound and hexadecyltrimethoxysilane as the preferred compound for the second organosilicon compound. The exposure time is approximately 2 minutes. Then, the lens body is rinsed with isopropanol, specifically to remove unbound constituents, thus forming a stable omniphobic layer 6 on the lens body, which has at least two organosilicon compounds.

[084] Figure 4 shows a cross-section according to a third embodiment, in which the omniphobic layer 6 has a mixture comprising octadecyltrimethoxysilane as the preferred compound for the first organosilicon compound 81 and trimethoxy-n-octylsilane as the preferred compound for the second organosilicon compound 83, wherein octadecyltrimethoxysilane has a chain length C L1 of L1 = 18 and trimethoxy-n-octylsilane, a chain length C L2 of L2 = 8, which results in a difference ΔL of ΔL « 0.56. Due to the difference in chain length, when the omniphobic layer 6 is formed, the trimethoxy-n-octylsilane as the (shorter) chain compound can fill the gaps or intermediate spaces that inevitably form between the individual molecules of octadecyltrimethoxysilane 81 due to steric hindrance.As a result, that is, due to the advantageous arrangement of short-chain trimethoxy-n-octylsilane molecules 83 between long-chain octadecyl-trimethoxysilane molecules 81, it is advantageously possible to obtain complete coverage of the silicon oxide layer 4, as well as a nanostructure at the molecular level, resulting in a layer. Petition 870250086411, dated 09 / 24 / 2025, pages 37 / 45 31 / 33 omniphobic 8 with excellent omniphobic properties is formed on the lens body 2. The two compounds are present in the mixture in a ratio such that the short-chain trimethoxy-n-octylsilane compound 83, comprising about 80% of the mixture, is excessive relative to the long-chain octadecyltrimethoxysilane compound 81.

[085] Figure 5 shows a schematic drawing of a method for producing an omniphobic coating on a lens body 2, in particular on a spectacle lens, according to the second aspect of the invention. In the first step S100 of the method, the lens body 2 to be provided with an omniphobic coating 6 is first supplied, preferably in this step a lens body 2 made of a mineral glass or of a plastic material, with particular preference, of a (partially or semi) transparent plastic material, which is suitable for subsequent use as a lens, in particular as a spectacle lens.In the next step S104 of the method, the formation of the omniphobic coating 6 occurs on the lens body 2, that is, within the scope of this step of the method, the lens body 2 provided in step S100 is provided with an omniphobic layer 6, in particular an omniphobic layer 6 according to the first aspect of the invention, or such an omniphobic layer 6 is formed on the lens body 2. After completion of the method, a coated lens or a coated spectacle lens is present, that is, within the scope of the method, a coated lens (a coated lens body) has been produced from a provided lens body 2.

[086] Figure 6 shows advantageous developments of the proposed method according to the second aspect of the invention, schematically illustrated in Figure 5. With regard to steps S100 and S104, reference is made here to the description in Figure 5, as well as to the corresponding explanations in the general description. The method now presented is developed in such a way that, after step S100 of supplying a lens body 2, a pretreatment of the lens body 2 (supplied) occurs, firstly, in step S102, by which is meant a preferential pretreatment of an activation of one of the faces or surfaces of the lens body 2, in particular a plasma treatment for the formation of OH-reactive groups on a face or surface of the lens body 2, in particular on a silicon oxide layer 4 disposed, indirectly or directly, on that face or surface. Improved adhesion or bonding can be advantageously achieved by this pretreatment. Petition 870250086411, dated 09 / 24 / 2025, pp. 38 / 45 32 / 33 treatment for the formation of OH-reactive groups, as potential bonding partners are provided for the bonding of the omniphobic layer. In particular, at least one or more organosilicon compounds 8 can bind to the OH-reactive groups formed with their head or coupling groups 802, preferably within the scope of a hydrolysis reaction, and thus enter into a covalent bond with the lens body. As a result, better adhesion can be achieved, which advantageously leads to improved strength of the omniphobic layer 6, i.e., as a result, a lens body can be provided with an omniphobic layer 6 within the scope of the method, wherein this omniphobic layer is characterized by improved adhesion to the lens body and, associated with such, improved properties. Following step S104 of omniphobic layer formation, the proposed method is developed around the optional cleaning step S106.In this step S106, excess molecules of the omniphobic layer 6, which have not bonded to the lens body 2 or to the silicon oxide layer 4 placed over it, are removed from the surface, preferably by rubbing or spraying the coated lens body 2 with, optionally, (demineralized) water and / or a cleaning agent or solvent, for example, toluene or isopropanol. Advantageously, by means of cleaning and the associated removal of excess material, a smooth and clean surface can be obtained, characterized by particularly good omniphobic properties. The method now proposed is then advantageously developed by an additional, optional step of the method, in which drying or tempering of the coated lens body 2 still occurs in step S108 by means of cleaning.In this drying or tempering step, which preferably takes from a few minutes to a few hours, preferably about 20 minutes, the coated lens body is exposed to a defined temperature, preferably below 100 °C, with particular preference to a temperature of about 50 °C, in order to achieve solidification of the omniphobic layer 6 formed in step S104. As a modification thereof, a sequence of steps (of the method) not shown would also be conceivable, in which steps S106 and S108 occur in reverse order, that is, the coated lens 2 is first dried in a drying step S108, with the aim of achieving solidification of the omniphobic layer 6 formed, and then cleaned in step S106. Such a (sequential) order of the method is particularly advantageous if, in the drying step or... Petition 870250086411, dated 09 / 24 / 2025, pages 39 / 45 33 / 33 S108 tempering, an omniphobic layer condensation 6 is obtained, firstly, by supplying (thermal) energy and, in the subsequent S106 cleaning step, the excess material that did not bond with the lens body 2 during condensation is removed. Depending on the choice of cleaning agent, a further additional S108 drying step can naturally also be carried out in a development of the same, following the cleaning in the S106 step, i.e., a (sequential) order of the supply / pre-treatment (or activation) / forming / drying / cleaning / drying method would also be advantageously conceivable. LIST OF NUMERICAL REFERENCES Lens body, semi-finished eyeglass lens product Functional layer Silicon oxide layer Omniphobic layer Chains of an organosilicon compound Chains of a first organosilicon compound, 83 Chains of a second organosilicon compound 801 Silicon atom of an organosilicon compound 802 Coupling group or head group of an organosilicon compound 803 Functional group or tail group of an organosilicon compound S100 Lens body supply step of the method S102 Lens body pretreatment step of the method S104 Stage of forming an omniphobic layer that promotes slippage using the method. S106 Cleaning step of the method S108 Drying step of the method Petition 870250086411, dated 09 / 24 / 2025, pages 40 / 45

Claims

1 / 4 CLAIMS 1. Coated lens, in particular spectacle lens, characterized by comprising: - a lens body (2) made of a mineral glass or a plastic glass; - a silicon oxide layer (4) disposed indirectly or directly on a face or surface of the vitreous body (2); - an omniphobic layer with covalent bonding (6) promoting slip, which is formed on the silicon oxide layer (4), in which the omniphobic layer (6) has at least one organosilicon compound.

2. Coated lens, according to claim 1, characterized in that at least one organosilicon compound has at least one alkyl or alkoxy group with a C chain length equal to or greater than 8, preferably equal to or greater than 11.

3. Coated lens, according to claim 1 or 2, characterized in that the omniphobic layer contains a mixture comprising a first and at least one second organosilicon compound having at least one alkyl or alkoxy group.

4. Coated lens, according to any one of claims 1 to 3, characterized in that the longer alkyl group of the first organosilicon compound has a chain length of C L1 and the longer alkyl or alkoxy group of the second organosilicon compound has a chain length of C L2, where L2 is less than or equal to L1, and where ΔL = (L1 - L2) / L1.

5. Coated lens, according to claim 4, characterized in that - ΔL is less than or equal to 0.25, preferably less than or equal to 0.15, in particular, less than or equal to 0.1; and / or - ΔL is greater than or equal to 0.5, preferably greater than or equal to 0.75, in particular, greater than or equal to 0.

9.

6. Coated lens, according to any one of claims 1 to 5, characterized in that at least one of the organosilicon compounds contained in the mixture has at least one pentafluorophenyl group.

7. Coated lens, according to any one of claims 1 to 6, characterized by at least one organosilicon compound having Petition 870250092038, dated 08 / 10 / 2025, p. 12 / 15 2 / 4 hexadecyltrimethoxysilane and / or octadecyltrimethoxysilane and / or hexadecyltrichlorosilane and / or hexadecyltriethoxysilane and / or octadecyltriethoxysilane and / or octadecyltriethoxysilane and / or pentafluorophenoxyundecyltrimethoxysilane.

8. Coated lens, according to any one of claims 1 to 7, characterized in that at least one organosilicon compound has trimethoxy(methyl)silane and / or trimethoxy-n-octylsilane and / or isobutyl(trimethoxy)silane and / or isooctyl(trimethoxy)silane and / or n-octadecylmethyldimethoxysilane.

9. Coated lens, according to any one of claims 1 to 8, characterized in that the molecular structure of at least one organosilicon compound of the omniphobic layer is substantially linear.

10. Coated lens, according to any one of claims 1 to 9, characterized in that the molecular structure of at least one organosilicon compound of the omniphobic layer is non-linear.

11. Coated lens, according to claim 10, characterized in that the nonlinear molecular structure is caused by at least one branching.

12. Coated lens, according to claim 11, characterized in that the organosilicon compound, having at least one branch, has a substantially linear alkyl or alkoxy group and a second alkyl or alkoxy group, wherein the second group is attached to the Si atom and thereby forms the branch.

13. Coated lens, according to claim 10, characterized in that the nonlinear molecular structure is a cyclic structure or a ring structure.

14. Coated lens, according to claim 10, characterized in that the nonlinear molecular structure is caused by a dipodal organosilicon compound having at least two Si atoms.

15. Coated lens, according to any one of claims 1 to 9, characterized in that the omniphobic layer contains hexadecyltrimethoxysilane mixed with octadecyltrimethoxysilane.

16. Coated lens, according to any one of claims 1 to 14, characterized in that the omniphobic layer has hexadecyltrimethoxysilane mixed with at least one organosilicon compound having a C chain length of C1 or C3.

17. Coated lens, according to any one of claims 1 to 14, characterized in that the omniphobic layer has octadecyltrimethoxysilane mixed Petition 870250092038, dated 08 / 10 / 2025, page 13 / 15 3 / 4 with at least one organosilicon compound having a C chain length of C1 or C3.

18. Coated lens, according to any one of claims 1 to 14, characterized in that the omniphobic layer contains hexadecyltrimethoxysilane mixed with isobutyltrimethoxysilane or iso-octyltrimethoxysilane.

19. Coated lens, according to any one of claims 1 to 14, characterized in that the omniphobic layer contains octadecyltrimethoxysilane mixed with isobutyltrimethoxysilane or iso-octyltrimethoxysilane.

20. Coated lens, according to any one of claims 1 to 14, characterized in that the omniphobic layer has hexadecyltrimethoxysilane mixed with an aromatic silane, preferably mixed with 4-phenylbutyltrichlorosilane or 3-phenoxypropyltrichlorosilane.

21. Coated lens, according to any one of claims 1 to 14, characterized in that the omniphobic layer has octadecyltrimethoxysilane mixed with an aromatic silane, preferably mixed with 4-phenylbutyltrichlorosilane or 3-phenoxypropyltrichlorosilane.

22. Coated lens, according to any one of claims 1 to 14, characterized in that the omniphobic layer has hexadecyltrimethoxysilane mixed with a cyclic azasilane, preferably mixed with N-methyl-aza-2,2,4-trimethylsylcyclopentane or Nn-butyl-aza-2,2-dimethoxysylcyclopentane.

23. Coated lens, according to any one of claims 1 to 14, characterized in that the omniphobic layer has octadecyltrimethoxysilane mixed with a cyclic azasilane, preferably mixed with N-methyl-aza-2,2,4-trimethylsylcyclopentane or Nn-butyl-aza-2,2-dimethoxysylcyclopentane.

24. Coated lens, according to any one of claims 1 to 14, characterized in that the omniphobic layer has hexadecyltrimethoxysilane mixed with a dipodal silane, preferably mixed with 1,2-bis(trimethoxysilyl)decane, 1,8-bis(triethoxysilyl)octane, 1,10-bis(trimethoxysilyl)decane or bis(trimethoxysilylethyl)benzene.

25. Coated lens, according to any one of claims 1 to 14, characterized in that the omniphobic layer has octadecyltrimethoxysilane mixed with a dipodal silane, preferably mixed with 1,2-bis(trimethoxysilyl)decane, 1,8-bis(triethoxysilyl)octane, 1,10-bis(trimethoxysilyl)decane or bis(trimethoxysilylethyl)benzene.

26. Coated lens, according to any of the claims in Petition 870250092038, dated 10 / 08 / 2025, page 14 / 15 4 / 4 14, characterized in that the omniphobic layer has hexadecyltrimethoxysilane mixed with a siloxane, preferably mixed with polydimethylsiloxane.

27. Coated lens, according to any one of claims 1 to 14, characterized in that the omniphobic layer has octadecyltrimethoxysilane mixed with a siloxane, preferably mixed with polydimethylsiloxane.

28. Coated lens, according to claim 1, characterized in that the omniphobic layer has at least docosyltriethoxysilane.

29. Coated lens, according to claim 1, characterized in that at least one organosilicon compound is fluorine-free.

30. Coated lens, according to claim 1, characterized in that at least one organosilicon compound is free of trifluoromethyl and difluoromethylene groups.

31. Method for producing an omniphobic layer on a lens body characterized by comprising the following steps: - providing a lens body (S100); - forming a slip-promoting omniphobic layer (S104), in particular as defined in any one of claims 1 to 28.

32. Method according to claim 31, characterized in that, between the supply (S100) and forming (S104) steps of the method, as an additional step of the method, the following step is performed: - pre-treatment of the lens body (S102).

33. Method according to claim 32, characterized in that the pretreatment comprises the formation of OH-reactive groups, in particular the formation of OH-reactive groups by treatment with plasma and / or ions.

34. Method, according to any one of claims 31 to 34, the method being characterized by comprising, as an additional step of the method, the step: - cleaning (S106).

35. Method, according to any one of claims 31 to 34, the method being characterized by comprising, as an additional step of the method, the step: - drying (S108). Petition 870250092038, dated 08 / 10 / 2025, page 15 / 15

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