Eyeglass lens and glasses

Abstract

To provide a spectacle lens which is superior in terms of light resistance of antibacterial properties and water resistance.SOLUTION: A spectacle lens is provided, comprising a lens base material, an inorganic layer, and a metal-containing layer provided between the lens base material and the inorganic layer, where the metal-containing layer contains one or more types of metal selected form a group consisting of silver and platinum.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to spectacle lenses and spectacles.

Background Art

[0002] Patent Document 1 discloses an antibacterial synthetic resin molded article obtained by coating a synthetic resin surface with an antibacterial surface coating agent containing a polymerizable compound having at least two (meth)acryloyloxy groups in the molecule and a zeolite mainly ion-substituted with silver ions and curing it.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Patent Document 1 discloses that antibacterial properties are imparted to synthetic resin molded articles used for building materials, various indoor structural materials, signboards, displays, lighting fixtures, etc. by the above surface coating agent.

[0005] In recent years, the need for antibacterial properties has been increasing. Under such circumstances, if a function (i.e., antibacterial property) capable of suppressing the growth of bacteria can be imparted to spectacle lenses, the added value of the spectacle lenses can be increased. Furthermore, since spectacle lenses are incorporated into spectacles and used by spectacle wearers over a long period of time, they are exposed to light and moisture. Therefore, it is desirable that the spectacle lenses have excellent light resistance and water resistance of antibacterial properties.

[0006] One aspect of the present invention aims to provide a spectacle lens having excellent light resistance and water resistance of antibacterial properties.

Means for Solving the Problems

[0007] One aspect of the present invention is It has a lens substrate and an inorganic layer, and further has a metal-containing layer between the lens substrate and the inorganic layer, and the metal contained in the metal-containing layer is one or more metals selected from the group consisting of silver and platinum. The present invention relates to spectacle lenses, relating to.

[0008] Silver and platinum are components that can exhibit antibacterial properties. The spectacle lens contains such a component in a layer located under the inorganic layer. Thereby, the spectacle lens can exhibit excellent light resistance and water resistance with respect to antibacterial properties.

Effect of the Invention

[0009] According to one aspect of the present invention, it is possible to provide a spectacle lens excellent in antibacterial light resistance and water resistance.

Brief Description of the Drawings

[0010]

Figure 1

Mode for Carrying Out the Invention

[0011] [Spectacle Lenses] Hereinafter, the above spectacle lenses will be described in more detail.

[0012] <Metal-Containing Layer> The metal-containing layer of the spectacle lens contains at least one metal selected from the group consisting of silver and platinum. In one form, it can contain only silver or only platinum among silver and platinum, and in another form, it can contain both silver and platinum. Examples of the form of the metal in the metal-containing layer include the form of a simple metal or an alloy, the form of an inorganic compound or an organic compound, the form of metal ions, etc. The inorganic compound can be, for example, an inorganic oxide. Also, the form of the metal in the metal-containing layer can include the form of a metal complex. In the metal-containing layer, the metal can exist in multiple forms. For example, it is considered that at least a part of silver can be ionized by oxidation to exhibit antibacterial properties.

[0013] The metal-containing layer contains one or both of a silver-containing component and a platinum-containing component. The silver-containing component and the platinum-containing component are as described above with respect to the form of the metal in the metal-containing layer. The metal-containing layer located between the lens substrate and the inorganic layer in the spectacle lens can, in one form, contain only one of the silver-containing component and the platinum-containing component, thereby exhibiting antibacterial properties and excellent light resistance and water resistance with respect to antibacterial properties. Also, in one form, the metal-containing layer can contain both the silver-containing component and the platinum-containing component. Thereby, it is possible to suppress the discoloration of the spectacle lens due to long-term use. In this regard, the inventor considers that when silver is contained in the metal-containing layer, the oxidation of silver progresses over time, which is considered to cause the yellowing of the metal-containing layer, and platinum has an effect of controlling the progress of silver oxidation, so it is speculated that yellowing can be suppressed. When the metal-containing layer contains a silver-containing component, the silver-containing component contained can be only one kind or two or more kinds. This also applies to the case where the metal-containing layer contains a platinum-containing component.

[0014] The above metal-containing layer is a layer located between the lens substrate and the inorganic layer, and can be a layer provided directly on the lens substrate or indirectly via one or more other layers provided on the lens substrate by a film-forming method selected from the group consisting of wet film-forming methods and dry film-forming methods. Taking the total of the film-forming materials (excluding the solvent when a solvent is used during film formation) as 100% by mass, the content rate of the metal-containing component selected from the group consisting of the silver-containing component and the platinum-containing component (the total content rate when the silver-containing component and the platinum-containing component are included) can be, for example, 0.010% by mass or more, 0.030% by mass or more, or 0.050% by mass or more, and can also be, for example, 1.500% by mass or less, 1.300% by mass or less, or 1.000% by mass or less. In one form, the silver-containing component can be used alone as the film-forming material. In another form, a mixture of the silver-containing component and one or more other components can be used as the film-forming material. The same applies to the platinum-containing component. When the silver-containing component and the platinum-containing component are used in combination, the platinum-containing component can be used, for example, in an amount of 0.01 to 10 times the amount of the silver-containing component on a mass basis. The silver-containing component and the platinum-containing component can be used, for example, in the form of particles as the film-forming material. The particle size can be, for example, 1 nm or more and 20 nm or less. In the present invention and this specification, the "particle size" is the average particle size, and can be, for example, the arithmetic average of the particle sizes of about 5 to 10 particles. When the metal-containing component is used as the film-forming material in the form of particles of an inorganic oxide, such particles can be particles composed of only one kind of inorganic oxide, or can also be particles containing two or more kinds of inorganic oxides. In particles containing two or more kinds of inorganic oxides, at least one kind of inorganic oxide can be silver oxide and / or platinum oxide.

[0015] The inorganic layer, which will be described in detail later, can be a multilayer film of two or more inorganic layers. Such a multilayer film can be an antireflection film having the property of preventing reflection of light of a specific wavelength or light in a specific wavelength range, or a reflection film having the property of reflecting light of a specific wavelength or light in a specific wavelength range. In the case of spectacle lenses, specific examples of the layer provided between such a multilayer film and the lens substrate include the following layers. One or more of these layers can be the above-described metal-containing layer.

[0016] (Hardening layer) The above spectacle lens can have a hardening layer obtained by hardening a curable composition generally called a hard coat layer between the lens substrate and the inorganic layer. In one form, such a hardening layer can be the above-described metal-containing layer.

[0017] The above hardening layer can be obtained, for example, by hardening a curable composition containing silicon oxide particles (hereinafter also referred to as "component (A)") and a silane compound (hereinafter also referred to as "component (B)"). The curable composition can further contain a polyfunctional epoxy compound (hereinafter also referred to as "component (C)").

[0018] From the viewpoint of achieving both scratch resistance and optical properties, the particle size of the silicon oxide particles of component (A) is preferably in the range of 5 to 30 nm.

[0019] Component (B) is a silane compound, preferably a silane compound having a hydrolyzable group, and more preferably a silane coupling agent having an organic group bonded to a silicon atom and a hydrolyzable group.

[0020] Examples of the hydrolyzable group include an alkoxy group, an aryloxy group, or a hydroxy group, and an alkoxy group is preferred.

[0021] The silane compound is preferably an organosilicon compound represented by the following general formula (I) or a hydrolyzate thereof. (R 1 ) a (R 3 )b Si(OR 2 ) 4-(a+b) ···(I)

[0022] In general formula (I), a is 0 or 1, b is 0 or 1. Preferably, a is 1 and b is 0 or 1.

[0023] R 1 represents an organic group having a functional group such as an epoxy group like a glycidoxy group, a vinyl group, a methacryloxy group, an acryloxy group, a mercapto group, an amino group, a phenyl group, etc., and preferably represents an organic group having an epoxy group. The above functional group may be directly bonded to the silicon atom or indirectly bonded via a linking group such as an alkylene group.

[0024] R 2 is, for example, a hydrogen atom, an alkyl group, an acyl group, or an aryl group, and preferably an alkyl group.

[0025] R 2 The alkyl group represented by is, for example, a linear or branched alkyl group having 1 to 4 carbon atoms. Specific examples include a methyl group, an ethyl group, a propyl group, a butyl group, etc., and preferably a methyl group or an ethyl group.

[0026] R 2 The acyl group represented by is, for example, an acyl group having 1 to 4 carbon atoms. Specific examples include an acetyl group, a propionyl group, an oleyl group, a benzoyl group, etc.

[0027] R 2 The aryl group represented by is, for example, an aryl group having 6 to 10 carbon atoms. Specific examples include a phenyl group, a xylyl group, a tolyl group, etc.

[0028] R 3 is an alkyl group or an aryl group.

[0029] R 3The alkyl group represented by is, for example, a linear or branched alkyl group having 1 to 6 carbon atoms, and specific examples thereof include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group and the like.

[0030] R 3 Examples of the aryl group represented by include, for example, an aryl group having 6 to 10 carbon atoms, and specific examples thereof include a phenyl group, a xylyl group, a tolyl group and the like.

[0031] Specific examples of component (B) include the following silane compounds. Glycidoxymethyltrimethoxysilane, Glycidoxymethyltriethoxysilane, α-Glycidoxyethyltriethoxysilane, β-Glycidoxyethyltrimethoxysilane, β-Glycidoxyethyltriethoxysilane, α-Glycidoxypropyltrimethoxysilane, α-Glycidoxypropyltriethoxysilane, β-Glycidoxypropyltrimethoxysilane, β-Glycidoxypropyltriethoxysilane, γ-Glycidoxypropyltrimethoxysilane, γ-Glycidoxypropyltriethoxysilane, γ-Glycidoxypropyltripropoxysilane, γ-Glycidoxypropyltributoxysilane, γ-Glycidoxypropyltriphenoxysilane, α-Glycidoxybutyltrimethoxysilane, α-Glycidoxybutyltriethoxysilane, β-Glycidoxybutyltrimethoxysilane, β-Glycidoxybutyltriethoxysilane, γ-Glycidoxybutyltrimethoxysilane, γ-Glycidoxybutyltriethoxysilane, δ-Glycidoxybutyltrimethoxysilane, δ-Glycidoxybutyltriethoxysilane, (3,4-Epoxycyclohexyl)methyltrimethoxysilane, (3,4-Epoxycyclohexyl)methyltriethoxysilane, β-(3,4-Epoxycyclohexyl)ethyltrimethoxysilane, β-(3,4-Epoxycyclohexyl)ethyltriethoxysilane, β-(3,4-Epoxycyclohexyl)ethyltripropoxysilane, β-(3,4-Epoxycyclohexyl)ethyltributoxysilane, β-(3,4-Epoxycyclohexyl)ethyltriphenoxysilane, γ-(3,4-Epoxycyclohexyl)propyltrimethoxysilane, γ-(3,4-Epoxycyclohexyl)propyltriethoxysilane, δ-(3,4-Epoxycyclohexyl)butyltrimethoxysilane, δ-(3,(4-Epoxycyclohexyl)butyltriethoxysilane, glycidoxymethyldimethoxysilane, glycidoxymethyldiethoxysilane, α-glycidoxyethylmethyldimethoxysilane, α-glycidoxyethylmethyldiethoxysilane, β-glycidoxyethylmethyldimethoxysilane, β-glycidoxyethylmethyldiethoxysilane, α-glycidoxypropylmethyldimethoxysilane, α-glycidoxypropylmethyldiethoxysilane, β-glycidoxypropylmethyldimethoxysilane, β-glycidoxypropylmethyldiethoxysilane, γ-glycidoxypropylmethyldimethoxysilane, γ-glycidoxypropylmethyldiethoxysilane, γ-glycidoxypropylmethyldipropoxysilane, γ-glycidoxypropylmethyldibutoxysilane, γ-glycidoxypropylmethyldiphenoxysilane, γ-glycidoxypropylethyldimethoxysilane, γ-glycidoxypropylethyldiethoxysilane, γ-glycidoxypropylvinyldimethoxysilane, γ-glycidoxypropylvinyldiethoxysilane, γ-glycidoxypropylphenyldimethoxysilane, γ-glycidoxypropylphenyldiethoxysilane, methyl silicate, ethyl silicate, n-propyl silicate, i-propyl silicate, n-butyl silicate, sec-butyl silicate, t-butyl silicate, tetraacetoxysilane, methyltrimethoxysilane, methyltriethoxysilane, methyltripropoxysilane, methyltriacetoxysilane, methyltributoxysilane, methyltripropoxysilane, methyltriamyloxysilane, methyltriphenoxysilane, methyltribenzyloxysilane, methyltriphenethyloxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, vinyltrimethoxysilane, vinyltriacetoxysilane, vinyltrimethoxyethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, phenyltriacetoxysilane, γ-chloropropyltrimethoxysilane, γ-chloropropyltriethoxysilane, γ-chloropropyltriacetoxysilane, 3,3,3-trifluoropropyltrimethoxysilane, γ-methacryloxypropyltrimethoxysilane, γ-mercaptopropyltrimethoxysilane, γ-mercaptopropyltriethoxysilane, β-cyanoethyltriethoxysilane, chloromethyltrimethoxysilane, chloromethyltriethoxysilane, N-(β-aminoethyl)γ-aminopropyltrimethoxysilane, N-(β-aminoethyl)γ-aminopropylmethyldimethoxysilane, γ-aminopropylmethyldimethoxysilane, N-(β-aminoethyl)γ-aminopropyltriethoxysilane, N-(β-aminoethyl)γ-aminopropylmethyldiethoxysilane, dimethyldimethoxysilane, phenylmethyldimethoxysilane, dimethyldiethoxysilane, phenylmethyldiethoxysilane, γ-chloropropylmethyldimethoxysilane, γ-chloropropylmethyldiethoxysilane, dimethyldiacetoxysilane, γ-methacryloxypropylmethyldimethoxysilane, γ-methacryloxypropylmethyldiethoxysilane, γ-mercaptopropylmethyldimethoxysilane, γ-mercaptopropylmethyldiethoxysilane, methylvinyldimethoxysilane, methylvinyldiethoxysilane, etc., As the silane compound, commercially available silane coupling agents can also be used. Specific examples of commercially available products include KBM-303, KBM-402, KBM-403, KBE402, KBE403, KBM-1403, KBM-502, KBM-503, KBE-502, KBE-503, KBM-5103, KBM-602, KBM-603, KBM-903, KBE-903, KBE-9103, KBM-573, KBM-575, KBM-9659, KBE-585, KBM-802, KBM-803, KBE-846, KBE-900, etc. manufactured by Shin-Etsu Chemical Co., Ltd.

[0032] Component (C) is a polyfunctional epoxy compound. A polyfunctional epoxy compound is a compound containing two or more epoxy groups in one molecule. The polyfunctional epoxy compound preferably contains two or three epoxy groups in one molecule.

[0033] Specific examples of component (C) include the following polyfunctional epoxy compounds. 1,6 - hexanediol diglycidyl ether, ethylene glycol diglycidyl ether, diethylene glycol diglycidyl ether, triethylene glycol diglycidyl ether, tetraethylene glycol diglycidyl ether, nonaethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, dipropylene glycol diglycidyl ether, tripropylene glycol diglycidyl ether, tetrapropylene glycol diglycidyl ether, nonapropylene glycol diglycidyl ether, neopentyl glycol diglycidyl ether, diglycidyl ether of neopentyl glycol hydroxyhibernate, trimethylolpropane diglycidyl ether, trimethylolpropane triglycidyl ether, glycerol diglycidyl ether, glycerol triglycidyl ether, diglycerol diglycidyl ether, diglycerol triglycidyl ether, diglycerol tetraglycidyl ether, pentaerythritol diglycidyl ether, pentaerythritol triglycidyl ether, pentaerythritol tetraglycidyl ether, dipentaerythritol tetraglycidyl ether, sorbitol tetraglycidyl ether, diglycidyl ether of tris(2 - hydroxyethyl) isocyanurate, triglycidyl ether of tris(2 - hydroxyethyl) isocyanurate and other aliphatic epoxy compounds, isophorone diol diglycidyl ether, bis - 2,2 - hydroxycyclohexylpropane diglycidyl ether and other alicyclic epoxy compounds, resorcin diglycidyl ether, bisphenol A diglycidyl ether, bisphenol F diglycidyl ether, bisphenol S diglycidyl ether, diglycidyl ester of orthophthalic acid, phenol novolak polyglycidyl ether, cresol novolak polyglycidyl ether and other aromatic epoxy compounds, etc. From the viewpoint of adhesion to adjacent layers or the lens substrate, component (C) is preferably a compound containing two or three epoxy groups (a bifunctional or trifunctional epoxy compound).

[0034] Examples of commercially available polyfunctional epoxy compounds include EX-201, EX-211, EX-212, EX-252, EX-313, EX-314, EX-321, EX-411, EX-421, EX-512, EX-521, EX-611, EX-612, EX-614, EX-614B, etc. of the Denacol series manufactured by Nagase ChemteX Corporation.

[0035] In addition to the components (A) to (C) described above, the above curable composition can be prepared by mixing optional components such as an organic solvent, a surfactant (leveling agent), a curing catalyst, etc. as necessary with the above components.

[0036] The content of component (A) is preferably 20% by mass or more, more preferably 30% by mass or more, still more preferably 40% by mass or more, preferably 80% by mass or less, more preferably 70% by mass or less, still more preferably 60% by mass or less, with the total amount of the solid content of the curable composition (i.e., the total of all components excluding the solvent) being 100% by mass. The content of component (B) is preferably 5% by mass or more, more preferably 10% by mass or more, still more preferably 15% by mass or more, preferably 80% by mass or less, more preferably 70% by mass or less, still more preferably 60% by mass or less, with the total amount of the solid content of the curable composition being 100% by mass. The content of component (C) is, for example, 0% by mass or more, preferably 10% by mass or more, more preferably 15% by mass or more, preferably 50% by mass or less, more preferably 40% by mass or less, still more preferably 30% by mass or less, with the total amount of the solid content of the curable composition being 100% by mass. The filler / matrix ratio (hereinafter also simply referred to as "F / M ratio") is preferably 0.5 or more, more preferably 0.6 or more, still more preferably 0.7 or more, and is preferably 2.0 or less, more preferably 1.8 or less, still more preferably 1.5 or less. The F / M ratio means the mass ratio of component (A) to the total mass of components (B) and (C) [component (A) / (component (B) + component (C))].

[0037] By using, as the curable composition, one containing a metal-containing component selected from the group consisting of a silver-containing component and a platinum-containing component, the metal-containing layer can be provided between the lens substrate and the inorganic layer as a cured layer obtained by curing such a curable composition.

[0038] As the method for applying the curable composition, known coating methods such as spin coating method, dip coating method, spray coating method, etc. can be adopted. This also applies to the coating of the compositions used for forming various layers described later. The curing treatment can be light irradiation and / or heat treatment. The curing treatment conditions may be determined according to the types of various components contained in the curable composition and the composition of the curable composition. The film thickness of the cured layer obtained by curing the curable composition is, for example, 1 μm or more and 100 μm or less. From the viewpoint of enhancing the scratch resistance of the surface, the film thickness of the cured layer is preferably 3 μm or more, more preferably 5 μm or more, and from the viewpoints of significantly enhancing the scratch resistance, reducing the amplitude of ripples, and significantly obtaining the effect of suppressing interference fringes, it is further preferably 8 μm or more, still more preferably 10 μm or more, and is preferably 80 μm or less, more preferably 60 μm or less, and further preferably 50 μm or less.

[0039] (Underlayer) The above spectacle lens can have one or more underlayers between the lens substrate and the inorganic layer. Also, in one form, one or more underlayers can be provided between the lens substrate and the cured layer obtained by curing the curable composition, and among the one or more underlayers and the cured layer, one or more underlayers can be the above metal-containing layer. The number of underlayers located between the lens substrate and the inorganic layer or between the lens substrate and the cured layer obtained by curing the curable composition can be, for example, one layer or two layers. Examples of the underlayer include a layer that functions as an interference fringe suppression layer (for example, an interference fringe suppression layer called a λ / 4 layer) and a primer layer for improving adhesion. The above spectacle lens can have one or both of the interference fringe suppression layer and the primer layer between the lens substrate and the inorganic layer or between the lens substrate and the cured layer of the curable composition.

[0040] Interference fringe suppression layer The interference fringe suppression layer is a layer that can suppress the generation of interference fringes compared to the case where this layer is not included. A layer with an optical film thickness of 0.2λ to 0.3λ for light with a wavelength λ of 450 to 650 nm can function as an interference fringe suppression layer. The film thickness of the interference fringe suppression layer can be in the range of, for example, 50 nm to 100 nm as the physical film thickness.

[0041] The interference fringe suppression layer can be formed, for example, by applying a dispersion liquid containing at least metal oxide particles and a resin to the surface of the lens substrate.

[0042] The metal oxide particles can play a role in adjusting the refractive index of the interference fringe suppression layer. Examples of the metal oxide particles include particles such as tungsten oxide (e.g., WO3), zinc oxide (e.g., ZnO), aluminum oxide (e.g., Al2O3), titanium oxide (e.g., TiO2), zirconium oxide (e.g., ZrO2), tin oxide (e.g., SnO2), beryllium oxide (e.g., BeO), antimony oxide (e.g., Sb2O5), etc. These particles can be used alone or in combination of two or more kinds of metal oxide particles. Also, composite oxide particles of two or more kinds of metal oxides can be used. From the viewpoint of optical properties, the particle size of the metal oxide particles is preferably in the range of 5 to 30 nm.

[0043] Examples of the resin for the interference fringe suppressing layer include at least one selected from polyurethane resins, acrylic resins, epoxy resins, etc., preferably a polyurethane resin, and more preferably an aqueous resin composition containing a polyurethane resin, that is, an aqueous polyurethane resin composition. The aqueous polyurethane resin composition can be prepared, for example, by subjecting a polyol compound and an organic polyisocyanate compound, optionally together with a chain extender, to a urethanization reaction in a solvent that is inert to the reaction and has a high affinity for water to obtain a prepolymer, and after neutralizing this prepolymer, dispersing it in an aqueous solvent containing a chain extender to increase the molecular weight. Regarding such an aqueous polyurethane resin composition and its preparation method, reference can be made to, for example, paragraphs 0009 to 0013 of Japanese Patent No. 3588375, paragraphs 0012 to 0021 of JP-A-8-34897, paragraphs 0010 to 0033 of JP-A-11-92653, paragraphs 0010 to 0033 of JP-A-11-92655, etc. Also, as the aqueous polyurethane resin composition, commercially available aqueous urethanes can be used as they are or diluted with an aqueous solvent as needed. Examples of commercially available aqueous polyurethane resin compositions include the Evafanol series manufactured by Nichika Chemical Co., Ltd., the Superflex series manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd., the Adcavon Titer series manufactured by ADEKA Corporation, the Orestar series manufactured by Mitsui Chemicals, Inc., the Bondic series, the Hydran series manufactured by DIC Corporation, the Impranil series manufactured by Bayer AG, the Sofuranate series manufactured by Nippon Soflan Co., Ltd., the Poise series manufactured by Kao Corporation, the Sampren series manufactured by Sanyo Chemical Industries, Ltd., the Eiserex series manufactured by Hodogaya Chemical Co., Ltd., the Neorets series manufactured by Zeneca, etc.

[0044] The dispersion used to form the interference fringe suppressing layer may contain an aqueous solvent. The aqueous solvent means a solvent containing water, for example, water, a mixed solvent of water and a polar solvent, etc., and preferably water. From the viewpoints of liquid stability and film-forming property, the solid content concentration in the aqueous resin composition is preferably 1 to 60% by mass, more preferably 5 to 40% by mass. The aqueous resin composition can contain additives such as an antioxidant, a dispersant, and a plasticizer, as necessary, in addition to the resin component. Further, a commercially available aqueous resin composition may be diluted with a solvent such as water, alcohol, propylene glycol monomethyl ether (PGM) and used.

[0045] By using, as the above aqueous resin composition, one containing a metal-containing component selected from the group consisting of a silver-containing component and a platinum-containing component, as the underlayer (interference fringe suppressing layer) formed from such an aqueous resin composition, the above metal-containing layer can be provided between the lens substrate and the inorganic layer, between the lens substrate and the cured layer obtained by curing the curable composition, or between the lens substrate and the primer layer. The aqueous resin composition is applied to the surface to be coated (for example, the surface of the lens substrate) to form a coating layer, and at least a part of the aqueous solvent is removed by drying treatment or the like to solidify the coating layer, thereby forming an underlayer (interference fringe suppressing layer).

[0046] Primer layer The primer layer can be, for example, an aqueous resin layer formed from an aqueous resin composition containing a resin and an aqueous solvent. The aqueous solvent contained in the aqueous resin composition is, for example, water, a mixed solvent of water and a polar solvent, etc., and preferably water. From the viewpoints of liquid stability and film-forming property, the solid content concentration in the aqueous resin composition is preferably 1 to 60% by mass, more preferably 5 to 40% by mass. The aqueous resin composition can contain additives such as an antioxidant, a dispersant, and a plasticizer, as necessary, in addition to the resin component. Further, a commercially available aqueous resin composition may be diluted with a solvent such as water, alcohol, propylene glycol monomethyl ether (PGM) and used.

[0047] The aqueous resin composition can contain a resin component in a state dissolved in an aqueous solvent or dispersed as particles (preferably colloidal particles). Among them, a dispersion in which the resin component is dispersed in fine particle form in an aqueous solvent (preferably water) is desirable. In this case, from the viewpoint of the dispersion stability of the composition, the particle size of the resin component is preferably 0.3 μm or less. Also, from the viewpoint of stability, the pH of the aqueous resin composition is preferably about 5.5 to 9.0 at 25°C. The viscosity at a liquid temperature of 25°C is preferably 5 to 500 mPa·s, and more preferably 10 to 50 mPa·s, from the viewpoint of coating applicability. Regarding the resin, reference can be made to the previous description regarding the resin of the interference fringe suppression layer.

[0048] By using, as the aqueous resin composition, one containing a metal-containing component selected from the group consisting of a silver-containing component and a platinum-containing component, as the underlayer (primer layer) formed from such an aqueous resin composition, the above metal-containing layer can be provided between the lens substrate and the inorganic layer, between the lens substrate and the cured layer obtained by curing the curable composition, between the interference fringe suppression layer and the inorganic layer, or between the interference fringe suppression layer and the cured layer obtained by curing the curable composition. By applying the aqueous resin composition to a surface to be coated (for example, the surface of the interference fringe suppression layer or the surface of the lens substrate) to form a coating layer, and drying and removing at least a part of the aqueous solvent by a drying treatment or the like to solidify the coating layer, an underlayer (primer layer) can be formed. The film thickness of the primer layer can be, for example, in the range of 0.01 to 2.0 μm.

[0049] <Lens substrate> The lens substrate of the spectacle lens can be a plastic lens substrate or a glass lens substrate. The glass lens substrate can be, for example, a lens substrate made of inorganic glass. From the viewpoint of being lightweight, difficult to break, and easy to handle, a plastic lens substrate is preferred as the lens substrate. Examples of the plastic lens substrate include styrene resins such as (meth)acrylic resins, polycarbonate resins, allyl resins, allyl carbonate resins such as diethylene glycol bisallyl carbonate resin (CR-39), vinyl resins, polyester resins, polyether resins, urethane resins obtained by reacting an isocyanate compound with a hydroxy compound such as diethylene glycol, thiourethane resins obtained by reacting an isocyanate compound with a polythiol compound, and cured products of curable compositions containing a (thio)epoxy compound having one or more disulfide bonds in the molecule (generally called transparent resins). As the lens substrate, an undyed one (colorless lens) or a dyed one (dyed lens) may be used. The refractive index of the lens substrate can be, for example, about 1.60 to 1.75. However, the refractive index of the lens substrate is not limited to the above range and may be above or below the above range within the above range. In the present invention and this specification, the refractive index refers to the refractive index with respect to light having a wavelength of 500 nm. Also, the lens substrate may be a lens having a refractive power (so-called prescription lens) or a lens without a refractive power (so-called non-prescription lens).

[0050] The spectacle lens can be various lenses such as a single-focus lens, a multi-focus lens, and a progressive power lens. The type of the lens is determined by the surface shapes of both sides of the lens substrate. Also, the surface of the lens substrate may be any of a convex surface, a concave surface, and a flat surface. In a normal lens substrate and spectacle lens, the object-side surface is convex and the eyeball-side surface is concave. However, the present invention is not limited thereto.

[0051] <Inorganic layer> The above spectacle lens has an inorganic layer on a lens substrate. In the present invention and this specification, the "inorganic layer" is a layer containing an inorganic substance, preferably a layer mainly composed of an inorganic substance. Here, the main component is the component that occupies the largest proportion in the layer, usually accounting for about 50% to 100% by mass, and further about 90% to 100% by mass of the mass of the layer. The same applies to the main components described later. The inorganic layer can be a layer laminated on the surface of the lens substrate via at least a metal-containing layer.

[0052] In one form, the above inorganic layer can be a multilayer film of two or more inorganic layers. Examples of such a multilayer film include a multilayer film containing at least one high refractive index layer and at least one low refractive index layer. Such a multilayer film can be an antireflection film having the property of preventing reflection of light of a specific wavelength or a specific wavelength range, or a reflection film having the property of reflecting light of a specific wavelength or a specific wavelength range. In the present invention and this specification, the "high" and "low" regarding "high refractive index" and "low refractive index" are relative notations. That is, the high refractive index layer refers to a layer having a higher refractive index than the low refractive index layer contained in the same multilayer film. In other words, the low refractive index layer refers to a layer having a lower refractive index than the high refractive index layer contained in the same multilayer film. The refractive index of the high refractive index material constituting the high refractive index layer is, for example, 1.60 or more (for example, in the range of 1.60 to 2.40), and the refractive index of the low refractive index material constituting the low refractive index layer can be, for example, 1.59 or less (for example, in the range of 1.37 to 1.59). However, as described above, since the notations "high" and "low" regarding the high refractive index and the low refractive index are relative, the refractive indices of the high refractive index material and the low refractive index material are not limited to the above ranges.

[0053] Specifically, examples of the high refractive index material for forming the high refractive index layer include one or more mixtures of oxides selected from the group consisting of zirconium oxide (e.g., ZrO2), tantalum oxide (e.g., Ta2O5), titanium oxide (e.g., TiO2), aluminum oxide (e.g., Al2O3), yttrium oxide (e.g., Y2O3), hafnium oxide (e.g., HfO2), and niobium oxide (e.g., Nb2O5). On the other hand, examples of the low refractive index material for forming the low refractive index layer include one or more mixtures of oxides or fluorides selected from the group consisting of silicon oxide (e.g., SiO2), magnesium fluoride (e.g., MgF2), and barium fluoride (e.g., BaF2). In the above examples, for the sake of convenience, the oxides and fluorides are shown in stoichiometric compositions, but those in which oxygen or fluorine is deficient or excessive from the stoichiometric composition can also be used as the high refractive index material or the low refractive index material.

[0054] Preferably, the high refractive index layer is a film mainly composed of a high refractive index material, and the low refractive index layer is a film mainly composed of a low refractive index material. Such a film (e.g., a vapor deposition film) can be formed by performing film formation using a film-forming material (e.g., a vapor deposition material) mainly composed of the high refractive index material or the low refractive index material. The film and the film-forming material may unavoidably contain impurities, and may also contain other components, for example, other inorganic substances or known additive components that play a role in assisting film formation, as long as the functions of the main components are not impaired. Film formation can be performed by known film-forming methods. From the viewpoint of ease of film formation, it is preferably performed by vapor deposition, and more preferably by vacuum vapor deposition. The antireflection film can be, for example, a multilayer film in which a high refractive index layer and a low refractive index layer are alternately laminated a total of 3 to 10 layers. The film thickness of the high refractive index layer and the film thickness of the low refractive index layer can be determined according to the layer structure. Specifically, the combination of layers included in the multilayer film and the film thickness of each layer can be determined by optical design simulation by known methods based on the refractive index of the film-forming material for forming the high refractive index layer and the low refractive index layer, and the desired reflection characteristics and transmission characteristics to be provided to the spectacle lens by providing the multilayer film. Further, the multilayer film may contain one or more layers of a vapor deposition film of a conductive oxide (conductive oxide layer), preferably a vapor deposition film of a conductive oxide formed by vapor deposition using a vapor deposition material mainly composed of a conductive oxide, at an arbitrary position. The film thickness of each layer of the high refractive index layer and the low refractive index layer included in the multilayer film can be, for example, 3 to 500 nm, and the total thickness of the multilayer film can be, for example, 100 to 900 nm. The film thickness in the present invention and in this specification is the physical film thickness unless otherwise specified.

[0055] The above spectacle lens can contain one or more layers that can usually be included in a spectacle lens at an arbitrary position.

[0056] The above spectacle lens can function such that the metal-containing layer functions as an antibacterial layer, and thereby exhibits antibacterial properties. Further, the above inorganic layer can provide the spectacle lens with antireflection performance for light of a specific wavelength or light in a specific wavelength range, for example, by functioning as an antireflection film.

[0057] [Glasses] One aspect of the present invention relates to glasses provided with the above-mentioned spectacle lenses. Details of the spectacle lenses included in these glasses are as described above. Regarding the above glasses, known techniques can be applied to configurations such as frames.

Example

[0058] Hereinafter, the present invention will be further described with reference to examples. However, the present invention is not limited to the embodiments shown in the examples.

[0059] [Metal-containing component] The "silver particles" described in the "Metal-containing component" column of Table 1 are silver particles with a particle size of 2 to 5 nm (so-called silver nanoparticles). The "platinum particles" described in the "Metal-containing component" column of Table 1 are platinum particles with a particle size of 2 to 5 nm (so-called platinum nanoparticles). The "silver-containing oxide particles" described in the "Metal-containing component" column of Table 1 are ATOMY BALL-(UA) (aqueous dispersion of particles containing silver oxide, silicon oxide, and aluminum oxide, particle size: 15 nm) manufactured by Nippon Shokubai Catalysts & Chemicals, Ltd. The content rate described in Table 1 is the content rate of silver oxide.

[0060] [Preparation of Reference Lens 1] [Plastic lens substrate] As the plastic lens substrate, a plastic lens for glasses (trade name EYNOA, refractive index 1.67) manufactured by HOYA Corporation was used.

[0061] [Anti-interference fringe layer (λ / 4 layer)] To 305.0 g of methanol, 126 g of 4-hydroxy-4-methyl-2-pentanone (DAA) and 350.5 g of water were added. Further, 217.5 g of a thermoplastic resin (Superflex 170 manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.), 90.0 g of a sol-like material (ZrO2 sol) in which HZ-407MH manufactured by Nissan Chemical Industries, Ltd. was dispersed at 40% by mass in methanol, and 1.0 g of a leveling agent (Y-7006 manufactured by Toray Dow Corning Co., Ltd.) were added, and the mixture was stirred at a liquid temperature of 20°C for 1 hour and treated with a filter to obtain a liquid for the λ / 4 layer. The obtained liquid for the λ / 4 layer was applied to the surface of a plastic lens substrate cleaned by the spin coating method, and dried and solidified in a drying apparatus with an internal atmosphere temperature of 100 °C for 20 minutes, and λ / 4 layers were formed on both sides of the lens substrate, respectively.

[0062] <Primer layer> To 305.0 g of methanol, 126 g of 4-hydroxy-4-methyl-2-pentanone (DAA) and 350.5 g of water were added. Further, 217.5 g of a thermoplastic resin (Superflex 170 manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) and 1.0 g of a leveling agent (Y-7006 manufactured by Toray Dow Corning Co., Ltd.) were added, and the mixture was stirred at a liquid temperature of 20 °C for 24 hours to obtain a primer liquid. The obtained primer liquid was applied to the surface of the λ / 4 layer by the dipping method, and dried and solidified in a drying apparatus with an internal atmosphere temperature of 100 °C for 20 minutes, and primer layers were formed on both sides of the lens substrate, respectively.

[0063] <Hard coat layer> 52 parts by mass of silica particles, 24 parts by mass of a silane coupling agent (KBM-403 manufactured by Shin-Etsu Chemical Co., Ltd., γ-glycidoxypropyltrimethoxysilane) and 24 parts by mass of a polyfunctional epoxy compound (Denacol EX-321 manufactured by Nagase ChemteX Corporation, trimethylolpropane polyglycidyl ether) were mixed to prepare a hard coat liquid. The prepared hard coat liquid was applied to the surface of the primer layer provided on both sides of the lens substrate by the spray coating method, pre-cured by heating in a heating furnace with an internal atmosphere temperature of 75 °C for 20 minutes, and then the internal atmosphere temperature of the heating furnace was raised to 110 °C and heated at the same temperature for 2 hours for main curing, and hard coat layers were formed on both sides of the lens substrate, respectively.

[0064] <Inorganic layer (multilayer antireflection film)> Next, the lens substrate formed with the hard coat layer was placed in a vacuum deposition apparatus, and a multilayer antireflection film in which 8 layers of SiO2 layer and ZrO2 layer were alternately laminated was formed on the surface of the hard coat layer by vacuum deposition method (total thickness: about 400 - 600 nm). The SiO2 layer is a deposited film formed by depositing silicon oxide as a deposition material, and the ZrO2 layer is a deposited film formed by depositing zirconium oxide as a deposition material. Each deposition material consists of only the described oxides except for unavoidably mixed impurities.

[0065] Through the above steps, spectacle lenses having a λ / 4 layer (film thickness 0.18 μm), a primer layer (film thickness 0.70 μm), a hard coat layer (film thickness 2.30 μm), and a multilayer antireflection film in this order on both sides of the lens substrate were produced.

[0066] [Examples 1 - 4, 7 - 9] In Examples 1 and 2 where "λ / 4 layer" is described in the column of "metal-containing layer" in Table 1, spectacle lenses were produced in the same manner as described for Reference Lens 1, except that the metal-containing components shown in Table 1 were contained in the λ / 4 layer liquid at the content rates shown in Table 1 with respect to 100% by mass of the total of all components of the λ / 4 layer liquid (excluding the solvent). In Examples 3 and 4 where "primer layer" is described in the column of "metal-containing layer" in Table 1, spectacle lenses were produced in the same manner as described for Reference Lens 1, except that the metal-containing components shown in Table 1 were contained in the primer liquid at the content rates shown in Table 1 with respect to 100% by mass of the total of all components of the primer liquid (excluding the solvent). In Examples 7 and 8 where "hard coat layer" is described in the column of "metal-containing layer" in Table 1, spectacle lenses were produced in the same manner as described for Reference Lens 1, except that the metal-containing components shown in Table 1 were contained in the hard coat liquid at the content rates shown in Table 1 with respect to 100% by mass of the total of all components of the hard coat liquid.

[0067] [Reference Lens 2] A hard coat liquid was prepared by mixing 44 parts by mass of silica particles, 39 parts by mass of a silane coupling agent (KBM-403 manufactured by Shin-Etsu Chemical Co., Ltd., γ-glycidoxypropyltrimethoxysilane), and 17 parts by mass of a polyfunctional epoxy compound (Denacol EX-321 manufactured by Nagase ChemteX Corporation, trimethylolpropane polyglycidyl ether). A spectacle lens was produced by the method described for the reference lens 1, except for the above.

[0068] [Examples 5 and 6] A spectacle lens was produced by the method described for the reference lens 2, except that the hard coat liquid contained a metal-containing component shown in Table 1 at the content rate shown in Table 1 with respect to 100% by mass of the total components of the hard coat liquid.

[0069] [Antibacterial test] The antibacterial test was carried out according to JIS Z 2801:2012. For Examples 1 to 4 and 7 to 9, the reference lens 1 was used as a reference sample, and for Examples 6 and 7, the reference lens 2 was used as a reference sample. The evaluation results of antibacterial properties shown in the "Initial" column of Table 1 are the results of evaluating the antibacterial properties of test pieces cut from spectacle lenses on which neither a light resistance test nor a water resistance test has been carried out, by the following method. Regarding the light resistance of the antibacterial properties shown in Table 1, after carrying out the light resistance test of Category 1 described in the chapter on light resistance test of the durability test method (2018 edition) of SIAA (Antibacterial Products Technical Council) on test pieces cut from each spectacle lens, the antibacterial properties were evaluated by the following method. Regarding the water resistance of the antibacterial properties, after carrying out the water resistance test of Category 1 described in the chapter on water resistance test of the durability test method (2018 edition) of SIAA (Antibacterial Products Technical Council) on test pieces cut from each spectacle lens, the antibacterial properties were evaluated by the following method. After putting a 50 mm × 50 mm test piece (test pieces cut from each spectacle lens of the examples and their reference samples) into a sterilized petri dish, 1.0×10 5 pieces to 4.0×10 50.4 mL of a bacterial solution containing the test bacteria (Staphylococcus aureus or Escherichia coli) is dropped onto the center of the test piece and covered with a polyethylene film cut to 40 mm × 40 mm. After culturing this petri dish at a relative humidity of 90% or more for 24 hours, the viable cell count per 1 cm 2 is measured, and the following antibacterial activity value is calculated. Antibacterial activity value = Ut - At ≧ 2.0 Ut: Average value of the logarithm of the viable cell count per 1 cm 2 after 24-hour culture of the unprocessed test piece (reference sample) At: Average value of the logarithm of the viable cell count per 1 cm 2 after 24-hour culture of the antibacterial processed test piece (example sample) The SIAA (Antibacterial Products Technical Council) stipulates that when the antibacterial activity value is 2 or more, the product has an antibacterial effect. Therefore, for each spectacle lens, the antibacterial property was judged according to the following criteria based on the value of the antibacterial activity value obtained above. OK: Antibacterial activity value is 2.0 or more NG: Antibacterial activity value is less than 2.0

[0070]

Table 1

[0071] From the results shown in Table 1, it can be confirmed that each spectacle lens of Examples 1 to 9 is excellent in antibacterial light resistance and water resistance.

[0072] [Evaluation of the combined use of silver-containing component and platinum-containing component] <Evaluation of yellowing suppression> Except that the content rate of the platinum-containing component was changed to 0.008 mass%, 0.010 mass%, 0.020 mass%, 0.050 mass%, and 0.100 mass%, spectacle lenses with different content rates of the platinum-containing component were produced by the method described for Example 5. For each of the produced spectacle lenses, the YI value (initial YI value) was measured. Subsequently, the spectacle lens was subjected to 0.20 W ultraviolet irradiation for 4 hours in a Q-Lab QUV ultraviolet fluorescent tube type accelerated weathering tester, and then placed in a high humidity environment (relative humidity 90%) for 4 hours. One cycle was defined as repeating this process 21 times. After that, the YI value (YI value after QUV) was measured. The YI value was measured by the following method. From the object side of the spectacle lens, the direct-incidence reflection spectroscopic characteristics at the optical center of the object-side surface (convex side) were measured. Using the measurement results of the direct-incidence transmission spectroscopic characteristics thus obtained, the YI value was determined in accordance with JIS K 7373:2006. Specifically, from the transmission spectrum obtained by measuring the direct-incidence transmission spectroscopic characteristics, X, Y, and Z were calculated according to Equation (3) of JIS Z 8701:1999, and the YI value for a D65 light source was calculated using the calculation formula in Section 6.1 of JIS K 7373:2006.

[0073] For each of the above spectacle lenses containing a silver-containing component and having different platinum-containing component contents, ΔYI = YI value after QUV - initial YI value was calculated. The YI value is an index of yellowing, and the smaller the value of ΔYI, the less yellowing there is after the QUV accelerated weathering test. Figure 1 is a graph plotting ΔYI against the content rate of the platinum-containing component. From Figure 1, it can be confirmed that the higher the content of the platinum-containing component in the spectacle lens, the smaller the value of ΔYI, that is, yellowing is suppressed in the spectacle lens containing the silver-containing component.

[0074] <Evaluation regarding film performance> Except for changing the content rates of the platinum-containing component to 0.008 mass%, 0.010 mass%, 0.020 mass%, 0.050 mass%, and 0.100 mass%, spectacle lenses with different platinum-containing component contents were produced by the method described for Example 7. For each of the produced spectacle lenses, the various items shown in Table 2 were evaluated by the following method. From the evaluation results shown in Table 2, it can be confirmed that the film performance does not deteriorate due to the addition of the platinum-containing component and the increase in the addition amount.

[0075] (Initial adhesion) Adhesion evaluation was carried out based on JIS K5600―5―6 (ISO 2409:1992). Specifically, after making 10×10 grid cuts on the surface of each spectacle lens, a peeling test was performed three times using cellophane adhesive tape, and the remaining grids out of 100 were counted.

[0076] (Initial abrasion resistance) After steel wool #0000 (manufactured by Nippon Steel Wool Co., Ltd.) with a load of 1 kg was reciprocated 20 times on the surface of the spectacle lens, the scratch resistance of the spectacle lens surface was visually determined. The judgment criteria were as follows. Note that "UA-A" in Table 2 indicates that, as a result of evaluating the abrasion resistance of a plurality of spectacle lenses manufactured by the same method using the above method, the judgment result was A for a very small number of spectacle lenses, and the judgment results of the remaining spectacle lenses were UA. UA: Almost no scratches A: 1 to 10 scratches B: 10 to 30 scratches C: The surface becomes cloudy

[0077] (Adhesion and abrasion resistance after the thermo-hygrostat test) After storing for 168 hours in an environment of temperature 40°C and relative humidity 90%, the adhesion and abrasion resistance of the spectacle lens were evaluated by the above method.

[0078] (Adhesion and abrasion resistance after immersion in warm water) After immersion in warm water at a water temperature of 50°C for 48 hours, the adhesion and abrasion resistance of the spectacle lens after the thermo-hygrostat test were evaluated by the above method.

[0079] (Adhesion and abrasion resistance after the QUV accelerated light resistance test) The spectacle lens was placed in a Q-Lab QUV ultraviolet fluorescent tube type accelerated weathering tester, and after performing 0.20 W ultraviolet irradiation for 4 hours, it was placed in a high humidity environment (relative humidity 90%) for 4 hours as one cycle, and 21 cycles were repeated. Then, the adhesion was evaluated by the above method.

[0080]

Table 2

[0081] Finally, the above-described aspects are summarized.

[0082] According to one aspect, there is provided an eyeglass lens having a lens substrate and an inorganic layer, further having a metal-containing layer between the lens substrate and the inorganic layer, wherein the metal contained in the metal-containing layer is one or more metals selected from the group consisting of silver and platinum.

[0083] The eyeglass lens can be an eyeglass lens excellent in antibacterial light resistance and water resistance.

[0084] In one form, the metal-containing layer can contain at least a silver-containing component.

[0085] In one form, the metal-containing layer can further contain a platinum-containing component.

[0086] By the metal-containing layer containing a silver-containing component further containing a platinum-containing component, it is possible to suppress the discoloration of the eyeglass lens due to long-term use.

[0087] In one form, the eyeglass lens can have the lens substrate, a cured layer obtained by curing a curable composition, and the inorganic layer in this order, and the cured layer can be the metal-containing layer.

[0088] In one form, the eyeglass lens can have the lens substrate, an underlayer, a cured layer obtained by curing a curable composition, and the inorganic layer in this order, and the underlayer can be the metal-containing layer.

[0089] In one form, the eyeglass lens can have two or more underlayers, and at least one underlayer can be the metal-containing layer.

[0090] According to one aspect, there is provided eyeglasses including the eyeglass lens.

[0091] The various aspects and forms described in this specification can be combined in any combination of two or more.

[0092] The embodiments disclosed this time should be considered illustrative in all respects and not restrictive. The scope of the present invention is shown not by the above description but by the claims, and it is intended that all modifications within the meaning and scope equivalent to the claims are included.

Industrial Applicability

[0093] One aspect of the present invention is useful in the fields of manufacturing spectacle lenses and spectacles.

Claims

1. An eyeglass lens having a lens substrate and an inorganic layer, further comprising a metal-containing layer between the lens substrate and the inorganic layer, wherein the metal-containing layer contains a metal present in the form of an oxide, the metal present in the form of the oxide is at least one metal selected from the group consisting of silver and platinum, the eyeglass lens has, in this order, the lens substrate, a cured layer obtained by curing a curable composition containing a silane compound, and the inorganic layer, the metal-containing layer is the cured layer, the eyeglass lens.

2. An eyeglass lens having a lens substrate and an inorganic layer, further comprising a metal-containing layer between the lens substrate and the inorganic layer, wherein the metal-containing layer contains a metal present in the form of an oxide, the metal present in the form of the oxide is at least one metal selected from the group consisting of silver and platinum, the eyeglass lens has, in this order, the lens substrate, an underlayer, a cured layer obtained by curing a curable composition containing a silane compound, and the inorganic layer, the metal-containing layer is the underlayer, the eyeglass lens.

3. The eyeglass lens according to claim 2, having two or more underlayers, and at least one underlayer being the metal-containing layer.

4. The eyeglass lens according to any one of claims 1 to 3, wherein the metal present in the form of the oxide is silver.

5. The eyeglass lens according to claim 4, wherein the metal-containing layer further contains platinum present in the form of a single substance or an alloy.

6. Glasses comprising the eyeglass lens according to any one of claims 1 to 5.

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