Eyeglass lens manufacturing method

Abstract

To provide a method for manufacturing a spectacle lens that has no adverse effect on reflection characteristic and permeation characteristic and has high antibacterial performance.SOLUTION: A method for manufacturing a spectacle lens having a base material and a metal atom containing layer disposed on the base material includes: forming the metal atom containing layer on the base material by an electron beam deposition in which a carrier containing at least one granule selected from a group consisting of silicon dioxide (SiO2), zirconium oxide (IV)(ZrO2), and titanium oxide (IV)(TiO2) is irradiated with an electron beam to a deposition source carrying metal particles containing at least one metal.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a method for manufacturing eyeglass lenses. [Background technology]

[0002] Metals are vapor-deposited onto eyeglass lenses using a deposition source in which the carrier for supporting the metal particles is a sintered filter made of stainless steel (SUS) containing Co, Ni, Fe, etc., or a deposition source made of a material in which SiO2 and metal ion-supported zeolite are mixed (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-12877 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when using a deposition source in which the carrier supporting the metal particles is a sintered SUS filter, there are problems such as: (i) the sintered filter is worn out by electron beam (EB) irradiation, (ii) the sintered filter components (e.g., SUS) are deposited as impurities, and (iii) because the amount of metal supported per sintered filter is small, the antibacterial properties of eyeglass lenses obtained by metal deposition using a single sintered filter are low. Regarding the above problem (iii), it is conceivable to increase the metal loading amount by increasing the thickness of the sintered filter. However, even if the metal loading amount is increased by increasing the thickness of the sintered filter, there are cases where metal vapor deposition cannot be performed sufficiently due to limitations on the heating temperature of the sintered filter components, etc.

[0005] Furthermore, when using a deposition source made of a mixture of SiO2 and metal ion-supported zeolite, the refractive index of the formed "film made of SiO2 and metal" will be higher than the refractive index of the "SiO2 film," so a new anti-reflection (AR) film must be designed, and if the film is formed in the same way as existing products, the reflection characteristics will change.

[0006] Under these circumstances, an object of one aspect of the present disclosure is to provide a method for manufacturing eyeglass lenses that can produce eyeglass lenses with high antibacterial performance without adversely affecting the reflection and transmission characteristics. [Means for solving the problem]

[0007] The embodiments of the present disclosure relate to the following [1] to [9]. [1] A method for manufacturing an eyeglass lens having a substrate and a metal atom-containing layer disposed on the substrate, the method comprising: forming the metal atom-containing layer on the substrate by electron beam evaporation, in which an electron beam is irradiated onto an evaporation source in which a carrier containing at least one type of granules selected from the group consisting of silicon dioxide (SiO2), zirconium (IV) oxide (ZrO2), and titanium (IV) oxide (TiO2) supports metal particles containing at least one type of metal. [2] The method for manufacturing a spectacle lens according to [1] above, wherein the average particle diameter D50 of the granules is 0.1 to 5.0 mm. [3] The method for manufacturing eyeglass lenses according to [1] or [2] above, wherein the granules consist solely of silicon dioxide (SiO2). [4] The method for manufacturing a spectacle lens according to any one of [1] to [3] above, wherein the metal particles contain silver. [5] The method for manufacturing a spectacle lens according to any one of [1] to [4] above, wherein the metal particles contain at least one selected from the group consisting of platinum, gold, palladium, mercury, cadmium, cobalt, nickel, copper, zinc, titanium, molybdenum, and tungsten. [6] The method for manufacturing a spectacle lens according to any one of [1] to [5] above, further comprising carrying out a drying process after impregnating the carrier with a liquid containing the metal particles, thereby causing the carrier to support the metal particles. [7] The method for manufacturing a spectacle lens according to any one of [1] to [6] above, wherein the spectacle lens further has an anti-reflection film disposed on the substrate, and the metal atom-containing layer is disposed on the anti-reflection film. [8] The method for manufacturing a spectacle lens according to any one of [1] to [6] above, wherein the spectacle lens further has an antireflection film disposed on the substrate, the antireflection film being a laminate of a plurality of monolayers, and the metal atom-containing layer is disposed between at least one pair of adjacent monolayers. [9] The method for manufacturing a spectacle lens according to any one of the above [1] to [8], wherein the metal atom-containing layer has a thickness of 5 nm or less. [Effects of the Invention]

[0008] According to one aspect of the present disclosure, it is possible to provide a method for manufacturing eyeglass lenses that can produce eyeglass lenses with high antibacterial performance without adversely affecting the reflection and transmission characteristics. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic diagram showing an example of a vacuum deposition apparatus equipped with an electron gun. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments and examples of the present disclosure will be described. Identical or corresponding parts will be designated by the same reference numerals, and their description may not be repeated. In the embodiments and examples described below, when numbers, amounts, etc. are mentioned, the scope of the present disclosure is not necessarily limited to those numbers, amounts, etc., unless otherwise specified. In the following embodiments, each component is not necessarily essential to the embodiments and examples of the present disclosure, unless otherwise specified.

[0011] [Method of manufacturing eyeglass lenses] A method for manufacturing an eyeglass lens according to an embodiment of the present disclosure is a method for manufacturing an eyeglass lens having a substrate and a metal atom-containing layer disposed on the substrate, and includes forming the metal atom-containing layer on the substrate by electron beam evaporation, in which an electron beam is irradiated onto an evaporation source in which a carrier containing at least one type of granules selected from the group consisting of silicon dioxide (SiO), zirconium (IV) oxide (ZrO), and titanium (IV) oxide (TiO) supports metal particles containing at least one type of metal. The method for manufacturing eyeglass lenses according to an embodiment of the present disclosure uses a vapor deposition source in which a carrier containing at least one type of granule selected from the group consisting of silicon dioxide (SiO2), zirconium (IV) oxide (ZrO2), and titanium (IV) oxide (TiO2) supports metal particles containing at least one type of metal, and therefore it is possible to manufacture eyeglass lenses with high antibacterial performance without adversely affecting the reflection and transmission characteristics.

[0012] <Base material> Examples of the substrate include plastic lens substrates, glass lens substrates such as inorganic glass lens substrates, etc. Among these, plastic lens substrates are preferred from the viewpoints of being lightweight, less likely to break, and easy to handle. Examples of plastic lens substrates include (meth)acrylic resins, styrene 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 (generally referred to as transparent resins) obtained by curing a curable composition containing a (thio)epoxy compound having one or more disulfide bonds in the molecule. The substrate may be either undyed (colorless lens) or dyed (dyed lens). The refractive index of the substrate is not particularly limited and is, for example, about 1.60 to 1.75. The refractive index of the substrate is not limited to the above range and may be within the above range, or may be above or below the above range. In this disclosure and this specification, the refractive index refers to the refractive index for light with a wavelength of 500 nm. The substrate may be a lens having refractive power (a so-called prescription lens) or a lens without refractive power (a so-called non-prescription lens).

[0013] The spectacle lens may be any of various lenses, such as a single-vision lens, a multifocal lens, or a progressive-power lens. The type of spectacle lens is determined by the surface shapes of both sides of the substrate. The substrate surface may be convex, concave, or flat. In typical substrates and spectacle lenses, the object-side surface is convex and the eyeball-side surface is concave. However, the present disclosure is not limited thereto.

[0014] <Metal atom-containing layer> In a method for manufacturing a spectacle lens according to an embodiment of the present disclosure, a spectacle lens having a metal atom-containing layer disposed on the substrate is manufactured. The functions that the metal atom-containing layer can exhibit can be controlled by the type and / or combination of metals contained in the metal atom-containing layer. For example, when forming a metal atom-containing layer that can function as an antibacterial layer that contributes to imparting a function of suppressing bacterial growth (i.e., antibacterial property) to a spectacle lens, an example of the metal contained in the metal atom-containing layer is silver. In one embodiment, the metal contained in the metal atom-containing layer includes at least one metal selected from the group consisting of platinum (Pt), gold (Au), palladium (Pd), mercury (Hg), cadmium (Cd), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), titanium (Ti), molybdenum (Mo), and tungsten (W). In one embodiment, the metal atom-containing layer may contain silver as the first metal and one or more metals other than silver as the second metal. The second metal is at least one metal selected from the group consisting of platinum, gold, palladium, mercury, cadmium, cobalt, nickel, copper, zinc, titanium, molybdenum, and tungsten, preferably at least one metal selected from the group consisting of platinum, palladium, and gold, and more preferably platinum. The metal atom-containing layer may contain, as the second metal, only one type of metal selected from the above group in one embodiment, or may contain two or more types in another embodiment.

[0015] The form of the metal in the metal atom-containing layer may be in the form of a simple metal, an alloy, an inorganic compound such as a metal oxide, an organic compound, or a metal ion. In the metal atom-containing layer, for example, silver can exist in a plurality of forms, and this also applies to other metals. The present inventors speculate that silver can exhibit antibacterial properties when at least a portion of it is ionized through oxidation, which contributes to the ability of the metal atom-containing layer containing silver to function as an antibacterial layer. Furthermore, the present inventors speculate that in a metal atom-containing layer containing silver and one or more second metals selected from the above group, selecting the above metals that have the effect of controlling the progress of oxidation of silver as the second metal will contribute to improving the durability of antibacterial properties. However, the present disclosure is not limited to the speculations set forth herein.

[0016] In one embodiment, the metal atom-containing layer may be a metal-containing inorganic layer. In the present disclosure and this specification, an "inorganic layer" refers to a layer containing an inorganic substance, preferably a layer containing an inorganic substance as a main component. Here, the main component refers to the component that is contained in the largest amount in the layer, and is usually a component that is contained in an amount of about 50% by mass to 100% by mass, or even about 90% by mass to 100% by mass, relative to the mass of the layer. The same applies to the main component described below. The metal-containing inorganic layer may contain the metal in the form of an inorganic substance such as a metal element, an alloy, an inorganic compound, etc. Inorganic substances tend to be highly stable to heat and less susceptible to thermal decomposition, making them preferable as components constituting layers provided on spectacle lenses, which are often subjected to heat-induced treatments during the manufacturing process.

[0017] <Electron beam evaporation> In the above-described manufacturing method, the metal atom-containing layer is formed by electron beam evaporation, in which an electron beam is irradiated onto an evaporation source in which a support containing at least one type of granules selected from the group consisting of silicon dioxide (SiO), zirconium(IV) oxide (ZrO), and titanium(IV) oxide (TiO) supports metal particles containing at least one type of metal. By employing such a film-forming method, it is possible to easily form a thin metal atom-containing layer. Furthermore, being able to form a thin layer with good film thickness uniformity is preferable from the viewpoint of improving the function exhibited by the layer or sustaining that function. From this perspective, the above-described film-forming method is also employed to form the metal atom-containing layer. The form of the metal in the metal particles may be in the form of a simple metal, an alloy, an inorganic compound such as a metal oxide, an organic compound, or a metal ion. The metal contained in the metal particles may be, for example, silver. In one embodiment, the metal contained in the metal particles includes at least one metal selected from the group consisting of platinum (Pt), gold (Au), palladium (Pd), mercury (Hg), cadmium (Cd), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), titanium (Ti), molybdenum (Mo), and tungsten (W). In one embodiment, the metal particles may contain silver as a first metal and one or more metals other than silver as a second metal. The second metal is at least one metal selected from the group consisting of platinum, gold, palladium, mercury, cadmium, cobalt, nickel, copper, zinc, titanium, molybdenum, and tungsten, preferably at least one metal selected from the group consisting of platinum, palladium, and gold, and more preferably platinum. The metal particles may contain, as the second metal, only one type of metal selected from the above group in one embodiment, or may contain two or more types in another embodiment.

[0018] Electron beam evaporation is a film formation method in which an electron beam is irradiated from an electron gun onto an evaporation source in a vacuum, heating and vaporizing the evaporation material contained in the evaporation source, and depositing the vaporized material on an object to be deposited, thereby forming an evaporated film. In contrast, another vapor deposition method involves heating and vaporizing the vapor deposition material by heating the internal atmosphere of the vapor deposition apparatus using a heating means (e.g., a heater) (hereinafter referred to as the "thermal vapor deposition method"). In the thermal vapor deposition method, the object to be deposited placed in the vapor deposition apparatus is also heated. While plastic lens substrates are preferred as spectacle lens substrates, they can deform when exposed to high temperatures. Therefore, when depositing a film on a plastic lens substrate using the thermal vapor deposition method, the heating temperature must be set with consideration given to preventing deformation of the plastic lens substrate. Because the heating temperature thus set may not necessarily be suitable for the vapor deposition material, it may not be easy to form a thin vapor deposition film with excellent thickness uniformity. Furthermore, it may be necessary to select a vapor deposition material that can vaporize at the set heating temperature, which may limit the types of vapor deposition materials that can be used. In contrast, in the electron beam evaporation method, the evaporation material is heated by irradiating the evaporation source with an electron beam, so that an evaporated film can be formed without exposing the film-forming object to high temperatures as in the above-mentioned thermal evaporation method.

[0019] Hereinafter, an embodiment of the method for forming the metal atom-containing layer by electron beam evaporation will be described, although the present disclosure is not limited to the following embodiment.

[0020] The deposition source used is a deposition source in which a carrier containing at least one granule selected from the group consisting of silicon dioxide (SiO2), zirconium(IV) oxide (ZrO2), and titanium(IV) oxide (TiO2), preferably granules consisting only of silicon dioxide (SiO2), particularly preferably granules consisting only of amorphous silicon dioxide (SiO2), supports metal particles containing at least one metal. Here, amorphous refers to a state of matter that does not have a crystalline structure.

[0021] The average particle size D50 of the granules is not particularly limited, but from the viewpoint of preventing the granules from evaporating or dissolving, it is preferably 0.1 mm or more, more preferably 0.2 mm or more, and particularly preferably 0.5 mm or more. On the other hand, from the viewpoint of efficiently supporting metal particles, it is preferably 5.0 mm or less, more preferably 2.0 mm or less, and particularly preferably 1.0 mm or less. The average particle size D50 of the granules is the particle size at 50% of the cumulative particle size distribution on a volume basis, determined, for example, by laser diffraction measurement of a sample.

[0022] For example, when the metal contained in the metal atom-containing layer is a combination of the first metal (silver) and one or more second metals described above, such a vapor deposition source can be prepared, for example, by the following method. A liquid containing silver particles (silver particles), which is a first metal, is prepared (hereinafter also referred to as a "first metal particle-containing liquid"). Such a first metal particle-containing liquid may be, for example, an aqueous dispersion of silver particles. The concentration (content) of the silver particles in the first metal particle-containing liquid may be, for example, in the range of 1,000 to 10,000 ppm. In the present disclosure and this specification, ppm is based on mass. A liquid containing one or more types of particles of a second metal (hereinafter also referred to as "second metal particle-containing liquid") is prepared separately from the first metal particle-containing liquid. Such a second metal particle-containing liquid may be, for example, an aqueous dispersion of particles of the second metal. Furthermore, as the second metal particle-containing liquid, only one type of second metal particle-containing liquid containing one or more types of particles of the second metal may be used, or two or more types of second metal particle-containing liquids containing one or more types of particles of the second metal may be used. In either case, the concentration (content) of the particles of the second metal in the second metal particle-containing liquid may be, for example, in the range of 1,000 to 10,000 ppm. Here, when the second metal particle-containing liquid contains two or more types of particles of the second metal, the above concentration (content) refers to the concentration (content) of the particles of the two or more types of metals combined. As each of the metal particle-containing liquids, for example, commercially available products available as aqueous dispersions of metal particles may be used as they are, or the commercially available products may be diluted before use. After preparing the metal particle-containing liquid in this manner, the metal particle-containing liquid is impregnated into the carrier containing the granules. The multiple types of metal particle-containing liquid may be impregnated into the carrier separately or simultaneously, or a mixture of multiple types of metal particle-containing liquid may be impregnated into the carrier. The amount of the first metal particle-containing liquid impregnated into the carrier may be, for example, in the range of 0.1 to 5.0 mL. The amount of the second metal particle-containing liquid impregnated into the carrier may be, for example, in the range of 0.1 to 5.0 mL. Furthermore, the amount of the second metal particle-containing liquid may be 0.1 to 5 times the amount of the first metal particle-containing liquid. Here, when two or more types of second metal particle-containing liquids are used as the second metal particle-containing liquid, the above-mentioned amount of liquid refers to the total amount of the two or more types of second metal particle-containing liquids. Examples of methods for impregnating the carrier with the metal particle-containing liquid include a method in which the metal particle-containing liquid is poured or sprayed onto the carrier, and a method in which the carrier is immersed in the metal particle-containing liquid.

[0023] By impregnating the metal particle-containing liquid into a carrier made of granules and then carrying out a drying process, the solvent component (water) in the metal particle-containing liquid evaporates, and the metal particles are retained in the carrier made of granules.

[0024] The particle size of each of the above metal particles is preferably 0.1 to 10 nm, more preferably 1 to 7 nm, and particularly preferably 2 to 5 nm, from the viewpoint of ease of vaporization by electron beam irradiation.

[0025] Electron beam evaporation can be carried out in a vacuum evaporation apparatus equipped with an electron gun, an example of which is shown in a schematic diagram in FIG. Inside a vacuum deposition apparatus 1 (commonly referred to as a "vacuum chamber") shown in FIG. 1, a deposition target 11 and an electron gun 3 are arranged opposite each other with a deposition source 2 sandwiched therebetween. The surface of the deposition target 11 facing the deposition source is the surface on which a metal atom-containing layer 14 is to be deposited. This surface is the substrate surface when the metal atom-containing layer is directly formed on the substrate surface, or the surface of a layer formed on the substrate when the metal atom-containing layer is to be laminated on the layer. The electron beam EB can be generated by passing a heating current through a filament provided in the electron gun 3. The heating current is set depending on the configuration of the electron gun used, the type of deposition material, etc. In addition, irradiation conditions such as the electron beam irradiation time are set depending on the desired film thickness, etc. When the electron beam EB generated by the electron gun 3 is irradiated onto the deposition source 2, the deposition material contained in the deposition source 2 is heated and vaporized, and then deposited on the surface of the deposition target 11 to form the metal atom-containing layer 14. When a deposition source in which particles of a first metal and particles of a second metal are supported on a carrier is used as the deposition source 2 as described above, the particles of the first metal and particles of the second metal, which are deposition materials, are heated and vaporized by electron beam irradiation, and a metal atom-containing layer 14 can be formed as a deposition film containing these metals on the deposition target 11. The inside of the vacuum chamber is, for example, atmospheric, and the internal pressure may be a pressure generally used for vacuum deposition, for example, 2×10 -2The electron beam evaporation process may be performed once or more times, and may be performed twice or more times using the same or different types of evaporation sources 2. For example, by performing the electron beam evaporation process twice or more times using the same or different types of evaporation sources 2, it is possible to form a metal atom-containing layer 14 with a larger film thickness.

[0026] Although the above description has been given of an example in which a metal atom-containing layer containing two or more metals is formed, in one embodiment, the metal atom-containing layer may contain only one metal. The above description can also be referred to for the formation of such a metal atom-containing layer.

[0027] As described above, from the viewpoint of enabling the manufacture of eyeglass lenses having a functional layer without changing or significantly changing the optical design of existing products, it is preferable that the presence of the functional layer has little effect on the reflection and / or transmission characteristics of the eyeglass lens. From this perspective, it is preferable that the thickness of the metal atom-containing layer is thin, and the thickness of the metal atom-containing layer is preferably 5 nm or less, more preferably 4 nm or less, and particularly preferably 3 nm or less (e.g., 1 nm or more and 3 nm or less). In this disclosure and this specification, the thickness of the metal atom-containing layer is the physical thickness. This also applies to various thicknesses in this disclosure and this specification. For eyeglass lenses in which two or more metal atom-containing layers of the same or different types are stacked by two or more film formation processes, the thickness of the metal atom-containing layer refers to the total thickness of these two or more layers. As described above, by forming the metal atom-containing layer by electron beam evaporation, a thin vapor deposition film having a thickness within the above range and excellent thickness uniformity can be formed. The thickness of the substrate and the film thickness of the various layers included in the spectacle lens, such as the metal atom-containing layer, can be determined, for example, by observing a cross section using a scanning electron microscope (SEM) or the like.

[0028] The metal atom-containing layer described above may be provided directly on the substrate surface of the spectacle lens in one embodiment, or may be provided indirectly on the substrate surface of the lens via one or more other layers in another embodiment. Various layers that may be included in the spectacle lens manufactured by the above manufacturing method will be described below.

[0029] <Eyeglass lenses> In one embodiment, the spectacle lens further includes an antireflection film disposed on the substrate, and the metal atom-containing layer is disposed on the antireflection film. When the antireflection film is a multilayer film, the metal atom-containing layer is disposed on the antireflection layer located farthest from the substrate. In another embodiment, the spectacle lens further comprises an antireflection film disposed on the substrate, the antireflection film being a laminate of a plurality of monolayers, and the metal atom-containing layer being disposed between at least one pair of adjacent monolayers. When the antireflection film is a multilayer film, the metal atom-containing layer is disposed below the antireflection layer located farthest from the substrate.

[0030] <<Layers that eyeglass lenses may contain>> (Inorganic layer) The spectacle lens may have an inorganic layer on the substrate. In this disclosure and this specification, as described above, an "inorganic layer" refers to a layer containing an inorganic substance, preferably a layer containing an inorganic substance as a main component. The main component is as described above. The inorganic layer may be a layer directly laminated on the substrate surface, or a layer indirectly laminated on the substrate surface via one or more other layers. Examples of such other layers include known layers such as a cured layer of a curable composition, commonly called a hard coat layer, and a primer layer provided to improve adhesion. The type and thickness of these layers are not particularly limited and can be determined depending on the functions and optical properties desired for the spectacle lens. The thickness of the hard coat layer is preferably from 0.1 to 10 μm, more preferably from 0.5 to 7 μm, and particularly preferably from 1 to 5 μm.

[0031] In one embodiment, the inorganic layer may be a multilayer film of two or more inorganic layers. When the inorganic layer is a multilayer film, the metal atom-containing layer may be provided above or below the uppermost inorganic layer of the multilayer film (i.e., the inorganic layer located farthest from the substrate). Examples of such multilayer films include a multilayer film containing one or more high-refractive-index layers and one or more low-refractive-index layers. Such multilayer films are anti-reflective films that have the property of preventing the reflection of light of a specific wavelength or light in a specific wavelength range, or reflective films that have the property of reflecting light of a specific wavelength or light in a specific wavelength range. In this disclosure and this specification, the terms "high" and "low" in "high refractive index" and "low refractive index" are relative terms. That is, a high-refractive-index layer refers to a layer with a higher refractive index than a low-refractive-index layer contained in the same multilayer film. In other words, a low-refractive-index layer refers to a layer with a lower refractive index than a 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 is, for example, 1.59 or less (for example, in the range of 1.37 to 1.59). However, as mentioned above, the terms "high" and "low" regarding high refractive index and low refractive index are relative, and therefore the refractive indices of the high refractive index material and low refractive index material are not limited to the above ranges.

[0032] Specifically, examples of high refractive index materials for forming the high refractive index layer include at least one oxide 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 low refractive index materials for forming the low refractive index layer include at least one oxide or fluoride 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, the oxides and fluorides are shown in terms of stoichiometric composition for convenience, but those in which oxygen or fluorine is deficient or excessive relative to the stoichiometric composition can also be used as high refractive index materials or low refractive index materials.

[0033] 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 films (e.g., vapor-deposited films) may be formed by depositing a film 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 film-forming material may contain unavoidable impurities and may also contain other components, such as other inorganic substances or known additives that assist film formation, within a range that does not impair the function of the main component. Film formation can be performed by known film-forming methods, and from the viewpoint of ease of film formation, vapor deposition is preferred, and vacuum deposition is more preferred. The anti-reflection film is, for example, a multilayer film in which a total of 3 to 10 high-refractive index layers and low-refractive index layers are alternately stacked. The film thicknesses of the high-refractive index layers and the low-refractive index layers can be determined depending on 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 using a known method, based on the refractive index of the film-forming materials for forming the high-refractive-index layer and the low-refractive-index layer, and the desired reflection and transmission characteristics that are to be imparted to the eyeglass lens by providing the multilayer film. Furthermore, the multilayer film may include, at any position, one or more layers containing a layer (conductive oxide layer) primarily composed of a conductive oxide, preferably a vapor-deposited film of a conductive oxide formed by vapor deposition using a vapor deposition material primarily composed of a conductive oxide. The thickness of the multilayer film is preferably 100 to 1000 nm, more preferably 200 to 800 nm, and particularly preferably 300 to 700 nm.

[0034] In one embodiment, the spectacle lens manufactured by the manufacturing method may have the metal atom-containing layer on the surface of the inorganic layer. For example, the metal atom-containing layer may be a layer directly laminated on the surface of the inorganic layer, or may be a layer indirectly laminated on the surface of the inorganic layer via one or more other layers. For other layers, please refer to the above description.

[0035] (water-repellent layer) The eyeglass lens manufactured by the above manufacturing method may have a water-repellent layer. In this disclosure and this specification, the term "water-repellent layer" refers to a layer that contributes to the water-repellent properties of the eyeglass lens surface or contributes to better water-repellent properties than when this layer is not present. In one embodiment, the eyeglass lens manufactured by the above manufacturing method may have a water-repellent layer on the surface of the metal atom-containing layer. For example, the water-repellent layer may be a layer directly laminated on the surface of the metal atom-containing layer, or may be a layer indirectly laminated on the surface of the metal atom-containing layer via one or more other layers. For details about other layers, please refer to the above description.

[0036] The water-repellent layer can be laminated on the metal atom-containing layer by performing a film formation process using a film-forming material that can function as a water-repellent agent. Examples of the film formation method include a film formation method selected from the group consisting of dry film formation methods and wet film formation methods. Examples of the dry film formation methods include physical vapor deposition and chemical vapor deposition, and examples of the wet film formation methods include coating methods. Examples of the physical vapor deposition methods include vapor deposition and sputtering. Among these, vapor deposition is preferred.

[0037] In one embodiment, the water-repellent layer may be a fluorine-based organic layer. Here, "based" is used to mean "comprise." In addition, in this disclosure and this specification, an "organic layer" refers to a layer containing an organic substance, preferably a layer containing an organic substance as a main component. The main component is as described above.

[0038] The fluorine-containing organic layer can be laminated on the metal atom-containing layer by performing a film formation process using a fluorine-containing organic substance as a film formation material. A preferred film formation method for forming the fluorine-containing organic layer is a dry film formation method, with a vapor deposition method being more preferred. Because fluorine-containing organic substances tend to have lower boiling points than the vapor deposition materials that can be used to form the metal atom-containing layer described above, a thermal vapor deposition method is also preferred. A vapor deposition source in which the fluorine-containing organic substance is supported on a carrier can be prepared by impregnating a carrier with a liquid (e.g., a dispersion) containing the fluorine-containing organic substance and then subjecting the carrier to a drying process. For the method of preparing the vapor deposition source, the above description regarding the formation of the metal atom-containing layer can also be referenced as appropriate.

[0039] An example of a fluorine-based organic substance is metaxylene hexafluoride (C6H4(CF3)2).

[0040] Furthermore, examples of fluorine-containing organic substances include fluorine-containing organic silane compounds represented by the following general formula (1).

[0041] [ka]

[0042] In the above general formula (1), Rf is a linear or branched perfluoroalkyl group having 1 to 16 carbon atoms, and is preferably CF3-, C2F5-, or C3F7-. 1 is a hydrolyzable group, e.g., a halogen atom, -OR 3 , -OCOR 3 , -OC(R 3 )=C(R 4 )2, -ON=C(R 3 )2, -ON=CR 5 is preferred. More preferred are a chlorine atom, -OCH3, and -OC2H5. 3 is an aliphatic hydrocarbon group or an aromatic hydrocarbon group, and R 4 is a hydrogen atom or an aliphatic hydrocarbon group (e.g., a lower aliphatic hydrocarbon group), and R 5R is a divalent aliphatic hydrocarbon group having 3 to 6 carbon atoms. 2 is a hydrogen atom or a monovalent organic group. The monovalent organic group is preferably an inert group. The monovalent organic group is more preferably a monovalent hydrocarbon group having 1 to 4 carbon atoms. X is an iodine atom or a hydrogen atom, and Y is a hydrogen atom or an alkyl group (e.g., a lower alkyl group). Z is a fluorine atom or a trifluoromethyl group. a, b, c, and d are each independently an integer in the range of 0 to 200, preferably an integer in the range of 1 to 50. e is 0 or 1. m and n are each independently an integer in the range of 0 to 2, preferably 0. p is an integer of 1 or more, preferably an integer in the range of 1 to 10.

[0043] The molecular weight (weight average molecular weight Mw) of the fluorine-containing organic silane compound represented by the general formula (1) is not particularly limited, and may be, for example, 5×10 2 ~1×10 5 range or 5 x 10 2 ~1×10 4 The range is.

[0044] In one embodiment, the fluorine-containing organosilane compound represented by the general formula (1) is a fluorine-containing organosilane compound represented by the following general formula (2).

[0045] [ka]

[0046] R in the above general formula (2) 1 , Y, and m are defined as in the above general formula (1), q is an integer in the range of 1 to 50, and r is an integer in the range of 1 to 10.

[0047] The water-repellent layer has a thickness of, for example, 30 nm or less, 25 nm or less, 20 nm or less, or 15 nm or less. The water-repellent layer has a thickness of, for example, 5 nm or more, or 10 nm or more. The water-repellent layer has a surface with a contact angle with water of, for example, 100° or more and 120° or less.

[0048] In the manufacturing method, the metal atom-containing layer may be formed at one or more layers at any position on either the object side or the eyeball side of the spectacle lens. For example, the manufacturing method may produce a spectacle lens having the metal atom-containing layer between the inorganic layer and the water-repellent layer. In this case, a laminate including at least the inorganic layer, the metal atom-containing layer, and the water-repellent layer may be formed on at least one surface of a substrate, or on both surfaces. For example, the laminate may be located on the object side of the spectacle lens, the laminate may be located on the eyeball side of the spectacle lens, or the laminate may be located on both the object side and the eyeball side of the spectacle lens. When the laminate is located on both sides of the spectacle lens, the object-side laminate and the eyeball-side laminate may be the same laminate or different laminates.

[0049] The metal atom-containing layer of the spectacle lens can function as an antibacterial layer, thereby exhibiting antibacterial properties. Furthermore, if the spectacle lens has a water-repellent layer, the spectacle lens can also exhibit water repellency, thereby preventing, for example, water discoloration of the lens. The inorganic layer can function, for example, as an anti-reflection film, thereby providing the spectacle lens with anti-reflection performance against light of a specific wavelength or light in a specific wavelength range.

[0050] In the present disclosure, the examples, contents, and various physical properties of the above-mentioned components may be arbitrarily combined with the items described as examples or preferred ranges in the detailed description of the invention. Furthermore, by adjusting the compositions described in the examples to those described in the detailed description of the invention, the invention can be practiced in the same manner as in the examples over the entire range of the claimed compositions. [Example]

[0051] The present disclosure will be further described below with reference to examples, but the present disclosure is not limited to the embodiments shown in the examples.

[0052] In the following, an SiO2 layer is a vapor-deposited film formed using silicon dioxide as a vapor-deposited material, and a ZrO2 layer is a vapor-deposited film formed using zirconium (IV) oxide as a vapor-deposited material. Each vapor-deposited material is a vapor-deposited material consisting only of the oxide described, excluding unavoidable impurities.

[0053] [Example 1] <Preparation of Lens Substrate with Hard Coat Layer> A hard coating solution containing inorganic oxide particles and a silicon compound was applied by spin coating to the entire object-side surface (convex surface) of a plastic lens substrate manufactured from a monomer for eyeglass lenses (MR8 manufactured by Mitsui Chemicals, Inc.), and the solution was then heat-cured in a heating furnace at an internal temperature of 100°C for 60 minutes to form a single hard coating layer with a thickness of 3 μm.

[0054] <Fabrication of multilayer anti-reflection coating> Next, the lens substrate with the hard coat layer formed thereon was placed in a vacuum deposition apparatus, and a multilayer antireflection coating was formed by vacuum deposition on the entire surface of the hard coat layer, comprising a total of seven layers (total thickness: approximately 400-600 nm) of "SiO2 layer / ZrO2 layer / SiO2 layer / ZrO2 layer / SiO2 layer." The notation " / " indicates that the part to the left of the " / " and the part to the right of the " / " are directly laminated. This also applies to the following descriptions. In this way, a spectacle lens having a layer structure of "lens substrate / hard coat layer / multilayer antireflection film (inorganic layer, content of inorganic substance: 90% by mass or more)" was produced.

[0055] <Preparation of metal atom-containing layer> (Preparation of evaporation source) As the first metal particle-containing liquid, an aqueous dispersion containing silver particles having a particle size of 2 to 5 nm at a concentration of 5000 ppm was prepared. As the second metal particle-containing liquid, an aqueous dispersion containing platinum particles with particle diameters of 2 to 5 nm at a concentration of 5000 ppm was prepared. Silicon dioxide granules (SiO2 granules, D50: 1.0 mm) were used as the support. 1.0 mL of the first metal particle-containing liquid was poured into the SiO2 granules, followed by drying for 1 hour in an atmospheric oven at an internal temperature of 65-75°C. This process was repeated twice (total amount of the first metal particle-containing liquid poured into the support: 2.0 mL), after which 1.0 mL of the second metal particle-containing liquid was poured into the support, followed by drying for 1 hour in an atmospheric oven at an internal temperature of 65-75°C. This process was repeated twice (total amount of the second metal particle-containing liquid poured into the support: 2.0 mL), to prepare a deposition source in which silver particles and platinum particles (deposition materials) were supported on the SiO2 granules.

[0056] (Deposition of metal atom-containing layer by electron beam evaporation) As shown in Figure 1, the spectacle lens on which the multilayer antireflection film was formed and the deposition source were placed in the vacuum chamber of a vacuum deposition device. The pressure in the vacuum chamber was 2 × 10 -2 The electron beam was irradiated from the electron gun toward the deposition source under electron beam irradiation conditions of 38 mA electron beam output (heating current) and 300 seconds electron beam irradiation time. By irradiating the electron beam in this manner, the silver particles and platinum particles can be heated and vaporized, forming a deposition film in which silver particles and platinum particles are deposited on the surface of the multilayer antireflection film. In this way, a metal atom-containing layer (metal-containing inorganic layer, containing metals: silver and platinum, inorganic substance content: 90% by mass or more, thickness: 3 nm) was formed on the surface of the multilayer antireflection film.

[0057] <Creating a water-repellent layer> (Preparation of evaporation source) A liquid containing metaxylene hexafluoride was prepared as a fluorine-based organic substance. A disk-shaped sintered filter (material: SUS) having a diameter of 18 mm was used as a carrier, and after 0.25 mL of the liquid was poured into this sintered filter, it was dried in an atmospheric oven at an internal temperature of 50°C for 1 hour. In this way, an evaporation source in which metaxylene hexafluoride (evaporation material) was supported on the sintered filter was prepared.

[0058] (Water-repellent layer formation by thermal evaporation method) As shown in FIG. 1, the spectacle lens on which the metal atom-containing layer was formed and the vapor deposition source were placed in the vacuum chamber of a vacuum vapor deposition device. The electron gun in Figure 1 was replaced with a halogen heater, and the internal atmospheric temperature in the vacuum chamber was controlled to 650°C by the halogen heater, and the pressure in the vacuum chamber was 2×10 -2 A water-repellent layer was formed by a thermal vapor deposition method at a pressure of 100 Pa or less. By heating the chamber in this way, the meta-xylene hexafluoride can be heated and vaporized, and a vapor deposition film of meta-xylene hexafluoride deposited on the surface of the metal atom-containing layer can be formed. In this way, a water-repellent layer (water repellent agent: meta-xylene hexafluoride) with a thickness of 10 to 20 nm was formed on the surface of the metal atom-containing layer. The contact angle of the water-repellent layer was 110°.

[0059] Through the above steps, a spectacle lens of Example 1 was produced, having a layer structure of "lens substrate / hard coat layer (thickness 3 μm) / multilayer antireflection film (inorganic layer) (thickness 400 to 600 nm) / metal atom-containing layer (thickness 3 nm) / water-repellent layer (fluorine-based organic layer, organic substance content: 90 mass % or more, thickness 10 to 20 nm)".

[0060] [Comparative Example 1] A spectacle lens of Comparative Example 1 having a layer structure of "lens substrate / hard coat layer (thickness 3 μm) / multilayer antireflection film (inorganic layer) (thickness 400 to 600 nm) / water-repellent layer (thickness 10 to 20 nm)" was produced in the same manner as in Example 1, except that no metal atom-containing layer was produced.

[0061] Comparative Example 2 <Preparation of Lens Substrate with Hard Coat Layer> A hard coating solution containing inorganic oxide particles and a silicon compound was applied by spin coating to the entire object-side surface (convex surface) of a plastic lens substrate manufactured from a monomer for eyeglass lenses (MR8 manufactured by Mitsui Chemicals, Inc.), and the solution was then heat-cured in a heating furnace at an internal temperature of 100°C for 60 minutes to form a single hard coating layer with a thickness of 3 μm.

[0062] <Fabrication of multilayer anti-reflection coating> Next, the lens substrate with the hard coat layer formed thereon was placed in a vacuum deposition apparatus, and a multilayer antireflection coating was formed over the entire surface of the hard coat layer by vacuum deposition, consisting of a total of seven layers (total thickness: approximately 400-600 nm) stacked together: (SiO2+Ag) / ZrO2 / (SiO2+Ag) / ZrO2 / (SiO2+Ag) / ZrO2 / (SiO2+Ag). The (SiO2+Ag) layer was formed using silicon dioxide (SiO2) and metal ion-supported zeolite (product name: AG-H3, manufactured by Rare Metals Co., Ltd.). In this way, a spectacle lens having a layer structure of "lens substrate / hard coat layer / multilayer antireflection film (inorganic layer, content of inorganic substance: 90% by mass or more)" was produced.

[0063] <Creating a water-repellent layer> (Preparation of evaporation source) A liquid containing metaxylene hexafluoride was prepared as a fluorine-based organic substance. A disk-shaped sintered filter (material: SUS) having a diameter of 18 mm was used as a carrier, and after 0.25 mL of the liquid was poured into this sintered filter, it was dried in an atmospheric oven at an internal temperature of 50°C for 1 hour. In this way, an evaporation source in which metaxylene hexafluoride (evaporation material) was supported on the sintered filter was prepared.

[0064] (Water-repellent layer formation by thermal evaporation method) As shown in FIG. 1, the spectacle lens on which the multilayer antireflection film was formed and the vapor deposition source were placed in the vacuum chamber of a vacuum vapor deposition device. The electron gun in Figure 1 was replaced with a halogen heater, and the internal atmospheric temperature in the vacuum chamber was controlled to 650°C by the halogen heater, and the pressure in the vacuum chamber was 2×10 -2A water-repellent layer was formed by a thermal vapor deposition method at a pressure of 100 Pa or less. By heating the chamber in this way, meta-xylene hexafluoride can be heated and vaporized, and a vapor-deposited film of meta-xylene hexafluoride deposited on the surface of the multilayer anti-reflection film can be formed. In this way, a water-repellent layer (water repellent agent: meta-xylene hexafluoride) with a thickness of 10 to 20 nm was formed on the surface of the multilayer anti-reflection film.

[0065] Through the above steps, a spectacle lens of Comparative Example 2 was produced, having a layer structure of "lens substrate / hard coat layer (thickness 3 μm) / multilayer antireflection film (inorganic layer) (thickness 400 to 600 nm) / water-repellent layer (fluorine-based organic layer, organic substance content: 90 mass% or more, thickness 10 to 20 nm)".

[0066] Comparative Example 3 A spectacle lens of Comparative Example 3 having a layer structure of "lens substrate / hard coat layer (thickness 3 μm) / multilayer antireflection film (inorganic layer) (thickness 400 to 600 nm) / metal atom-containing layer (thickness 3 nm) / water-repellent layer (thickness 10 to 20 nm)" was produced in the same manner as in Example 1, except that the vapor deposition source for producing the metal atom-containing layer was prepared by the following method.

[0067] (Preparation of evaporation source) As the first metal particle-containing liquid, an aqueous dispersion containing silver particles having a particle size of 2 to 5 nm at a concentration of 5000 ppm was prepared. As the second metal particle-containing liquid, an aqueous dispersion containing platinum particles with particle diameters of 2 to 5 nm at a concentration of 5000 ppm was prepared. A disk-shaped sintered filter (material: SUS) with a diameter of 18 mm was used as the support. 0.5 mL of the first metal particle-containing liquid was poured into this sintered filter, which was then dried for 1 hour in an atmospheric oven with an internal temperature of 65 to 75°C. This process was repeated twice (total amount of the first metal particle-containing liquid poured into the support: 1.0 mL), after which 0.5 mL of the second metal particle-containing liquid was poured into the sintered filter, which was then dried for 1 hour in an atmospheric oven with an internal temperature of 65 to 75°C. This process was repeated twice (total amount of the second metal particle-containing liquid poured into the support: 1.0 mL), to prepare a deposition source in which silver particles and platinum particles (deposition materials) were supported on a sintered filter.

[0068] [Evaluation of reflection and transmission characteristics] From the object side of each of the spectacle lenses of Example 1 and Comparative Examples 1 to 3, the normal incidence reflection spectral characteristics were measured at the optical center of the object side surface (convex side). Furthermore, the normal incidence reflection spectral characteristics at the optical center of the eyeball-side surface (concave side) of each of the spectacle lenses of Example 1 and Comparative Examples 1 to 3 were measured from the eyeball side. The spectral shapes of the transmission spectrum, the reflection spectrum on the convex surface side, and the reflection spectrum on the concave surface side of Example 1 in the wavelength range of 380 to 780 nm obtained from the measurement results were almost identical to the spectral shapes of the respective spectra of Comparative Example 1. From the measurement results, the luminous reflectance was calculated according to JIS T 7334: 2011, and the luminous transmittance was calculated according to JIS T 7333: 2005. The results are shown in Table 1.

[0069] [Table 1]

[0070] From the results shown in Table 1, it can be confirmed that in the eyeglass lens of Example 1, the metal atom-containing layer has almost no effect on the reflection and transmission characteristics of the eyeglass lens.

[0071] When the cross section of each spectacle lens of Example 1 was observed by SEM, the presence of metal particles was confirmed.

[0072] [Antibacterial test] The eyeglass lenses of Example 1 and Comparative Examples 1 to 3 were subjected to an antibacterial test in accordance with JIS Z 2801:2012. Specifically, three sample pieces measuring 50 mm x 50 mm are cut out from each spectacle lens for the initial evaluation of antibacterial properties, water resistance evaluation, and light resistance evaluation. The initial evaluation will be carried out by the following method: The test piece cut out from each eyeglass lens is placed in a sterilized petri dish with the surface on which the various layers are laminated facing upward. 5 pieces~4.0×10 5 0.4 mL of a bacterial solution containing 1 test bacterium (Staphylococcus aureus or Escherichia coli) is dropped onto the center of the surface of the sample, and the sample is covered with polyethylene film cut to a size of 40 mm x 40 mm. After placing the dish in an environment with a relative humidity of 90% or higher for 24 hours, the 1 cm 2 The number of viable bacteria per unit area is measured. The water resistance evaluation is carried out by the following method. Test pieces cut out from each eyeglass lens are subjected to a Category 1 water resistance test described in the Water Resistance Test chapter of the SIAA (Sustainability Testing Association of Antibacterial Products) (2018 edition), and then treated in the same manner as above to measure the number of viable bacteria. The light resistance evaluation is carried out by the following method. Test pieces cut out from each eyeglass lens are subjected to a Category 1 light resistance test described in the water resistance test chapter of the SIAA (Sustainability Testing Association of Antibacterial Products) (2018 edition), and then treated in the same manner as above to measure the number of viable bacteria.

[0073] The viable cell counts measured in the above-mentioned various evaluations of Comparative Example 1 are shown in Table 2.

[0074] [Table 2]

[0075] For Example 1, the antibacterial activity value was calculated from the viable cell counts measured in the above various evaluations using the following formula. For Comparative Example 3, the antibacterial activity value was calculated from the viable cell counts measured in the above various evaluations using the following formula.

[0076] Antibacterial activity value = Ut-At Ut: logarithm of viable cell count in the sample piece of Comparative Example 1 At: logarithm of viable cell count in the sample piece of Example 1 or Comparative Example 3

[0077] The evaluation results of Example 1 are shown in Table 3, and the evaluation results of Comparative Example 3 are shown in Table 4.

[0078] [Table 3]

[0079] [Table 4]

[0080] From the results of the Examples and Comparative Examples, it can be seen that the manufacturing method of the eyeglass lenses according to the Examples does not adversely affect the reflection and transmission characteristics and is capable of manufacturing eyeglass lenses with high antibacterial performance.

[0081] Finally, the embodiments of the present disclosure will be summarized. A method for manufacturing a spectacle lens according to an embodiment of the present disclosure is a method for manufacturing a spectacle lens having a substrate and a metal atom-containing layer disposed on the substrate, the method comprising forming the metal atom-containing layer on the substrate by electron beam evaporation, the electron beam irradiating an evaporation source in which a carrier containing at least one type of granules selected from the group consisting of silicon dioxide (SiO), zirconium (IV) oxide (ZrO), and titanium (IV) oxide (TiO) carries metal particles containing at least one type of metal. According to the above-described embodiment, it is possible to provide a method for manufacturing eyeglass lenses that can produce eyeglass lenses with high antibacterial performance without adversely affecting the reflection and transmission characteristics.

[0082] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present disclosure is defined by the claims, not by the above description, and is intended to include all modifications within the meaning and scope of the claims. In the present disclosure, the examples, contents, and various physical properties of the above-mentioned components may be arbitrarily combined with the items described as examples or preferred ranges in the detailed description of the invention. Furthermore, by adjusting the compositions described in the examples to those described in the detailed description of the invention, the disclosed embodiments can be practiced in the same manner as the examples over the entire range of the claimed compositions. [Explanation of symbols]

[0083] 1. Vacuum deposition equipment 2 Vapor deposition source 3 Electron gun 11 Object to be coated 14 Metal atom-containing layer EB electron beam

Claims

1. 1. A method for manufacturing a spectacle lens having a substrate and a metal atom-containing layer disposed on the substrate, comprising: Silicon dioxide (SiO ２ ), zirconium (IV) oxide (ZrO ２ ), and titanium(IV) oxide (TiO ２ and forming the metal atom-containing layer on the substrate by electron beam evaporation, in which an electron beam is irradiated onto an evaporation source in which a carrier made of at least one type of granule selected from the group consisting of:

2. The method for manufacturing eyeglass lenses according to claim 1, wherein the average particle diameter D50 of the granules is 0.1 to 5.0 mm.

3. The granules are silicon dioxide (SiO ２ 3. The method for manufacturing eyeglass lenses according to claim 1, wherein the manufacturing method comprises only the step of:

4. The method for manufacturing a spectacle lens according to any one of claims 1 to 3, wherein the metal particles contain silver.

5. The method for manufacturing a spectacle lens according to any one of claims 1 to 4, wherein the metal particles contain at least one type selected from the group consisting of platinum, gold, palladium, mercury, cadmium, cobalt, nickel, copper, zinc, titanium, molybdenum, and tungsten.

6. The method for manufacturing a spectacle lens according to any one of claims 1 to 5, further comprising carrying out a drying process after impregnating the carrier with a liquid containing the metal particles, thereby causing the metal particles to be supported on the carrier.

7. The eyeglass lens further comprises an anti-reflection coating disposed on the substrate; The method for manufacturing a spectacle lens according to any one of claims 1 to 6, wherein the metal atom-containing layer is disposed on the anti-reflection film.

8. The eyeglass lens further comprises an anti-reflection coating disposed on the substrate; the anti-reflection film is a laminate of a plurality of single layers, The method for manufacturing a spectacle lens according to any one of claims 1 to 6, wherein the metal atom-containing layer is disposed between at least one pair of adjacent monolayers.

9. The method for manufacturing a spectacle lens according to any one of claims 1 to 8, wherein the metal atom-containing layer has a film thickness of 5 nm or less.

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